US3883828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-power coupler synthesis
Assignee: Merrimac Industries Inc
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Filing: 1974-06-03
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Granted: 1975-05-13
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Expires: 1994-06-03
Abstract
Abstract A way of interconnecting noncommensurate lengths of coupler type elements with uncoupled lines is disclosed. The synthesis of inductive and capacitive forward transverse characteristics is taught by varying the number of coupled lines employed in making up a coupler type element to be included in an overall structure as disclosed in U.S. Pat. No. 3,761,843.
Inventors
- 👤 Joseph D Cappucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:58
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
527 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode impedance of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting an odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; ninth and tenth lines electromagnetically coupled to each other; said ninth lines providing thirteenth and fourteenth terminals at opposite ends thereof; said tenth line providing fifteenth and sixteenth terminals at opposite ends thereof; said electrical length of said ninth and tenth lines being equal; said ninth and tenth lines exhibiting said even mode impedance of Ze when said thirteenth, fourteenth, fifteenth and sixteenth terminals are terminated in said impedance of Zt, said ninth and tenth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; an eleventh line for connecting said tenth terminal to said thirteenth terminal; a twelfth line for connecting said twelfth terminal to said fifteenth terminal; said eleventh and twelfth lines being uncoupled lines; and means for connecting said third and eighth terminals to said eleventh and sixteenth terminals respectively.
Claim 2
Dependent Claim
527 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode impedance of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting an odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; ninth and tenth lines electromagnetically coupled to each other; said ninth lines providing thirteenth and fourteenth terminals at opposite ends thereof; said tenth line providing fifteenth and sixteenth terminals at opposite ends thereof; said electrical length of said ninth and tenth lines being equal; said ninth and tenth lines exhibiting said even mode impedance of Ze when said thirteenth, fourteenth, fifteenth and sixteenth terminals are terminated in said impedance of Zt, said ninth and tenth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; an eleventh line for connecting said tenth terminal to said thirteenth terminal; a twelfth line for connecting said twelfth terminal to said fifteenth terminal; said eleventh and twelfth lines being uncoupled lines; and means for connecting said third and eighth terminals to said eleventh and sixteenth terminals respectively.
Claim 3
Dependent Claim
423 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other, said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposte ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting dual even and odd mode impedance when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt, said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting said odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a ninth line for connecting said third terminal to said tenth terminal; a tenth line for connecting said first terminal to said twelfth terminal; said ninth and tenth lines being uncoupled lines; and said first and fourth; second And third; sixth and seventh; fifth and eighth; ninth and twelfth; and tenth and eleventh terminals respectively being physically adjacent to each other.
Claim 4
Dependent Claim
423 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other, said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposte ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting dual even and odd mode impedance when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt, said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting said odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a ninth line for connecting said third terminal to said tenth terminal; a tenth line for connecting said first terminal to said twelfth terminal; said ninth and tenth lines being uncoupled lines; and said first and fourth; second And third; sixth and seventh; fifth and eighth; ninth and twelfth; and tenth and eleventh terminals respectively being physically adjacent to each other.
Claim 5
Dependent Claim
41 words
The distributed parameter device as defined in claim 2 for operating at a center operating frequency in which each of said first, second, third, fourth, seventh and eight lines are less than a quarter wavelength long at said center operating frequency.
Claim 6
Dependent Claim
419 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting dual even and odd mode impedances when said fifth sixth, seventh and eighth terminals are terminated in said impedance of Zt, said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting said odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a ninth line for connecting said third terminal to said tenth terminal; a tenth line for connecting said first terminal to said twelfth terminal; said ninth and tenth lines being uncoupled lines; and said third and seventh lines are equal in length and said first line is different in length than said third and seventh lines.
Claim 7
Dependent Claim
419 words
A distributed parameter device including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting dual even and odd mode impedances when said fifth sixth, seventh and eighth terminals are terminated in said impedance of Zt, said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; seventh and eighth lines electromagnetically coupled to each other; said seventh line providing ninth and tenth terminals at opposite ends thereof; said eighth line providing eleventh and twelfth terminals at opposite ends thereof; said electrical length of said seventh and eighth lines being equal; said seventh and eighth lines exhibiting said even mode of Ze when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt; said seventh and eighth lines exhibiting said odd mode impedance of Zo when said ninth, tenth, eleventh and twelfth terminals are terminated in said impedance of Zt, said seventh and eighth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a ninth line for connecting said third terminal to said tenth terminal; a tenth line for connecting said first terminal to said twelfth terminal; said ninth and tenth lines being uncoupled lines; and said third and seventh lines are equal in length and said first line is different in length than said third and seventh lines.
Claim 8
Dependent Claim
20 words
The distributed parameter device as defined in claim 4 in which said third line is longer than said first line.
Claim 9
Dependent Claim
340 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third, and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminalS are terminated in said impedance of Zt, where: Zt Square Root Ze2o where first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; said first and fourth terminals being physically adjacent to each other; said second and third terminals being physically adjacent to each other; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal pphase velocity in said even and odd modes of excitation; said fifth and eighth terminals being physically adjacent to each other; said sixth and seventh terminals being physically adjacent to each other; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; said first and third lines being less than a quarter wavelength at said center operating frequency.
Claim 10
Dependent Claim
340 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third, and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminalS are terminated in said impedance of Zt, where: Zt Square Root Ze2o where first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; said first and fourth terminals being physically adjacent to each other; said second and third terminals being physically adjacent to each other; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal pphase velocity in said even and odd modes of excitation; said fifth and eighth terminals being physically adjacent to each other; said sixth and seventh terminals being physically adjacent to each other; a fifth line for connecting said second terminal to said fifth terminal; and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being uncoupled lines; said first and third lines being less than a quarter wavelength at said center operating frequency.
Claim 11
Dependent Claim
313 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second line exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt square root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; said fifth line covering the shortest distance between said second and fifth terminals; a sixth line for connecting said fourth terminal to said seventh terminal; said sixth line covering the shortest distance between said fourth and seventh terminals; said first and third lines being less than a quarter wavelength at said center operating frequency.
Claim 12
Dependent Claim
313 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second line exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt square root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; said fifth line covering the shortest distance between said second and fifth terminals; a sixth line for connecting said fourth terminal to said seventh terminal; said sixth line covering the shortest distance between said fourth and seventh terminals; said first and third lines being less than a quarter wavelength at said center operating frequency.
Claim 13
Dependent Claim
307 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fOurth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo; when said first, second third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; said fifth line being transverse to said first line; and a sixth line for connecting said fourth terminal to said seventh terminal; said sixth line being transverse to said second line; said first and third lines being less than a quarter wavelength long at said center operating frequency.
Claim 14
Dependent Claim
307 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fOurth terminals at opposite ends thereof; said electrical length of said first and second lines being equal; said first and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo; when said first, second third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal; said fifth line being transverse to said first line; and a sixth line for connecting said fourth terminal to said seventh terminal; said sixth line being transverse to said second line; said first and third lines being less than a quarter wavelength long at said center operating frequency.
Claim 15
Dependent Claim
305 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal, and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being spaced apart along the entire lengths thereof by a distance substantially equal to the lengths of said first and second lines; said first and third lines being less than a quarter wavelength at said center operating frequency.
Claim 16
Dependent Claim
305 words
A distributed parameter device having a center operating frequency including: first and second lines electromagnetically coupled to each other; said first line providing first and second terminals at opposite ends thereof; said second line providing third and fourth terminals at opposite ends thereof; said electrical length and second lines exhibiting an even mode impedance of Ze when said first, second, third and fourth terminals are terminated in an impedance of Zt; said first and second lines exhibiting an odd mode impedance of Zo when said first, second, third and fourth terminals are terminated in said impedance of Zt, where: Zt Square Root ZeZo; said first and second coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; third and fourth lines electromagnetically coupled to each other; said third line providing fifth and sixth terminals at opposite ends thereof; said fourth line providing seventh and eighth terminals at opposite ends thereof; said electrical length of said third and fourth lines being equal; said third and fourth lines exhibiting said even mode impedance of Ze when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth lines exhibiting said odd mode impedance of Zo when said fifth, sixth, seventh and eighth terminals are terminated in said impedance of Zt; said third and fourth coupled lines exhibiting equal phase velocity in said even and odd modes of excitation; a fifth line for connecting said second terminal to said fifth terminal, and a sixth line for connecting said fourth terminal to said seventh terminal; said fifth and sixth lines being spaced apart along the entire lengths thereof by a distance substantially equal to the lengths of said first and second lines; said first and third lines being less than a quarter wavelength at said center operating frequency.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |