Patent US6337664B1 successfully refreshed from Google Patents.
US6337664B1
Expired / Lapsed
US
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Tuning circuit for edge-loaded nested resonant radiators that provides switching among several wide frequency bands
Assignee: Individual
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Filing: 1998-10-21
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Granted: 2002-01-08
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Expires: 2018-10-21
Abstract
Abstract An improved tuning method is used in conjunction with a set of nested electrically conducting cones to increase the frequency band over which the resulting radiating system functions as an electrically small antenna with controlled variation in input impedance. This technique enables switching of the frequency band by means of simple circuits that can be activated by a control voltage.
Inventors
- 👤 Paul E. Mayes
- 👤 Walter Gee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:42
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14; H01Q23/00
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
121 words
An antenna comprising: a plurality of overlapping conductive members with a space between adjacent ones of said conductive members; a plurality of first reactive elements respectively electrically connected between adjacent ones of said conductive members in an outer region of said conductive members; a plurality of second reactive elements with a corresponding plurality of first switch members connected in series such that at least one second reactive element and at least one of said first switch members are connected in series in the space between adjacent ones of said plurality of overlapping conductive members and wherein at least one reactive element of a pair of second reactive elements and first switch members is electrically connected to one of said conductive members.
Claim 2
Dependent Claim
121 words
An antenna comprising: a plurality of overlapping conductive members with a space between adjacent ones of said conductive members; a plurality of first reactive elements respectively electrically connected between adjacent ones of said conductive members in an outer region of said conductive members; a plurality of second reactive elements with a corresponding plurality of first switch members connected in series such that at least one second reactive element and at least one of said first switch members are connected in series in the space between adjacent ones of said plurality of overlapping conductive members and wherein at least one reactive element of a pair of second reactive elements and first switch members is electrically connected to one of said conductive members.
Claim 3
Dependent Claim
19 words
The antenna of claim 1 , wherein said plurality of overlapping conductive elements comprise a plurality of cone members.
Claim 4
Dependent Claim
20 words
The antenna of claim 2 , wherein said plurality of overlapping conductive elements comprise at least one planar disc member.
Claim 5
Dependent Claim
30 words
The antenna of claim 2 , wherein said plurality of cone members further comprises a plurality of conductive cone members having an aperture within which a coaxial cable is located.
Claim 6
Dependent Claim
25 words
The antenna of claim 4 , wherein a center conductor of the coaxial cable is connected to an upper one of said conductive cone members.
Claim 7
Dependent Claim
24 words
The antenna of claim 4 wherein the shield element of the coaxial cable is connected to a lower one of said conductive cone members.
Claim 8
Dependent Claim
21 words
The antenna of claim 1 , wherein said plurality of overlapping conductive elements comprises a plurality of substantially triangular planar members.
Claim 9
Dependent Claim
54 words
The antenna of claim 7 , wherein the plurality of substantially triangular planar members are arranged in a single stack such that a coaxial cable has its conductor connected to a top one of said planar members and a shield of said coaxial cable is connected to a bottom one of said planar members.
Claim 10
Dependent Claim
48 words
The antenna of claim 7 , wherein the plurality of substantially triangular planar members are arranged in three groups of adjacent stacks and the respective groups are at least substantially symmetrically arranged such that lines bisecting a central angle of the triangle are spaced by approximately 120 degrees.
Claim 11
Dependent Claim
30 words
The antenna of claim 9 , wherein a central aperture is formed between the three groups of adjacent stacks and at least one coaxial cable is located in the aperture.
Claim 12
Dependent Claim
33 words
The antenna of claim 10 , wherein three coaxial cables are located within the aperture and each of the three cables are respectively associated with a single group of substantially planar triangular members.
Claim 13
Dependent Claim
29 words
The antenna of claim 11 , wherein a central conductor of each of the respective three coaxial cables is connected to corresponding ones of said substantially triangular planar members.
Claim 14
Dependent Claim
14 words
The antenna of claim 1 , wherein the first switch members are PIN diodes.
Claim 15
Dependent Claim
15 words
The antenna of claim 1 , wherein the first switch members are comprised of transistors.
Claim 16
Dependent Claim
13 words
The antenna of claim 1 , wherein the first reactive elements are inductors.
Claim 17
Dependent Claim
13 words
The antenna of claim 1 , wherein the first reactive elements are capacitors.
Claim 18
Dependent Claim
13 words
The antenna of claim 1 , wherein the second reactive elements are inductors.
Claim 19
Dependent Claim
13 words
The antenna of claim 1 , wherein the second reactive elements are capacitors.
Claim 20
Independent Claim
140 words
A method of tuning an antenna comprising the steps of: providing a plurality of overlapping conductive members with a space between adjacent ones of said conductive members; forming a plurality of first reactive elements respectively electrically connected between adjacent ones of said conductive members in an outer region of said conductive members; forming a plurality of second reactive elements with a corresponding plurality of first switch members connected in series such that at least one second reactive element and at least one of said first switch members are connected in series in the space between adjacent ones of said plurality of overlapping conductive members and wherein at least one reactive element of a pair of second reactive elements and first switch members is electrically connected to one of said conductive members; and changing a state of said first switch members.
Claim 21
Independent Claim
140 words
A method of tuning an antenna comprising the steps of: providing a plurality of overlapping conductive members with a space between adjacent ones of said conductive members; forming a plurality of first reactive elements respectively electrically connected between adjacent ones of said conductive members in an outer region of said conductive members; forming a plurality of second reactive elements with a corresponding plurality of first switch members connected in series such that at least one second reactive element and at least one of said first switch members are connected in series in the space between adjacent ones of said plurality of overlapping conductive members and wherein at least one reactive element of a pair of second reactive elements and first switch members is electrically connected to one of said conductive members; and changing a state of said first switch members.
Claim 22
Dependent Claim
23 words
The method of tuning an antenna of claim 19 , wherein said plurality of overlapping conductive elements comprise a plurality of cone members.
Claim 23
Dependent Claim
34 words
The method of tuning an antenna of claim 20 , wherein said plurality of cone members further comprises a plurality of conductive cone members having an aperture within which a coaxial cable is located.
Claim 24
Dependent Claim
29 words
The method of tuning an antenna of claim 21 , wherein a center conductor of the coaxial cable is connected to an upper one of said conductive cone members.
Claim 25
Dependent Claim
28 words
The method of tuning an antenna of claim 21 wherein the shield element of the coaxial cable is connected to a lower one of said conductive cone members.
Claim 26
Dependent Claim
24 words
The method of tuning an antenna of claim 19 , wherein said plurality of overlapping conductive elements comprise at least one planar disc member.
Claim 27
Dependent Claim
25 words
The method of tuning an antenna of claim 19 , wherein said plurality of overlapping conductive elements comprises a plurality of substantially triangular planar members.
Claim 28
Dependent Claim
58 words
The method of tuning an antenna of claim 25 , wherein the plurality of substantially triangular planar members are arranged in a single stack such that a coaxial cable has its conductor connected to a top one of said planar members and a shield of said coaxial cable is connected to a bottom one of said planar members.
Claim 29
Dependent Claim
52 words
The method of tuning an antenna of claim 25 , wherein the plurality of substantially triangular planar members are arranged in three groups of adjacent stacks and the respective groups are symmetrically arranged such that lines bisecting a central angle of the triangle are at least substantially spaced by approximately 120 degrees.
Claim 30
Dependent Claim
34 words
The method of tuning an antenna of claim 27 , wherein a central aperture is formed between the three groups of adjacent stacks and at least one coaxial cable is located in the aperture.
Claim 31
Dependent Claim
37 words
The method of tuning an antenna of claim 27 , wherein three coaxial cables are located within the aperture and each of the three cables are respectively associated with a single group of substantially planar triangular members.
Claim 32
Dependent Claim
33 words
The method of tuning an antenna of claim 29 , wherein a central conductor of each of the respective three coaxial cables is connected to corresponding ones of said substantially triangular planar members.
Claim 33
Dependent Claim
17 words
The method of tuning an antenna of claim 19 , wherein the first switch members are transistors.
Claim 34
Dependent Claim
18 words
The method of tuning an antenna of claim 19 , wherein the first switch members are PIN diodes.
Claim 35
Dependent Claim
17 words
The method of tuning an antenna of claim 19 , wherein the first reactive elements are inductors.
Claim 36
Dependent Claim
17 words
The method of tuning an antenna of claim 19 , wherein the first reactive elements are capacitors.
Claim 37
Dependent Claim
17 words
The method of tuning an antenna of claim 19 , wherein the second reactive elements are inductors.
Claim 38
Dependent Claim
17 words
The method of tuning an antenna of claim 19 , wherein the second reactive elements are capacitors.
Claim 39
Dependent Claim
87 words
An antenna comprising: a plurality of separate groups of overlapping conductive members with a space between adjacent layers of said groups of said conductive members, and wherein adjacent conductive members in a group are insulated from each other; at least one reactive element having a first radio frequency transmission path between adjacent ones of said conductive members in an outer region of said conductive members; at least one switch having a second radio frequency transmission path between conductive members in an outer region of said conductive members.
Claim 40
Dependent Claim
87 words
An antenna comprising: a plurality of separate groups of overlapping conductive members with a space between adjacent layers of said groups of said conductive members, and wherein adjacent conductive members in a group are insulated from each other; at least one reactive element having a first radio frequency transmission path between adjacent ones of said conductive members in an outer region of said conductive members; at least one switch having a second radio frequency transmission path between conductive members in an outer region of said conductive members.
Claim 41
Dependent Claim
23 words
The antenna of claim 37 , wherein the plurality of separate groups of overlapping conductive members are comprised of individual conductive cone portions.
Claim 42
Dependent Claim
23 words
The antenna of claim 37 , wherein the plurality of separate groups of overlapping conductive members are comprised of individual conductive triangular members.
Claim 43
Independent Claim
104 words
A method of tuning an antenna comprising the steps of: providing a plurality of separate groups of overlapping conductive members with a space between adjacent layers of said groups of said conductive members, and wherein adjacent conductive members in a group are insulated from each other; providing at least one reactive element having a first radio frequency transmission path between adjacent ones of said conductive members in an outer region of said conductive members; providing at least one switch having a second radio frequency transmission path between conductive members in an outer region of said conductive members; and changing a state of said switch.
Claim 44
Independent Claim
104 words
A method of tuning an antenna comprising the steps of: providing a plurality of separate groups of overlapping conductive members with a space between adjacent layers of said groups of said conductive members, and wherein adjacent conductive members in a group are insulated from each other; providing at least one reactive element having a first radio frequency transmission path between adjacent ones of said conductive members in an outer region of said conductive members; providing at least one switch having a second radio frequency transmission path between conductive members in an outer region of said conductive members; and changing a state of said switch.
Claim 45
Dependent Claim
23 words
The method of claim 40 , wherein the plurality of separate groups of overlapping conductive members are comprised of individual conductive cone portions.
Claim 46
Dependent Claim
23 words
The antenna of claim 40 , wherein the plurality of separate groups of overlapping conductive members are comprised of individual conductive triangular members.
Claim 47
Dependent Claim
62 words
An antenna comprising: a plurality of overlapping conductive surface members with a space between adjacent members; at least one electrical network comprising at least one reactive element and at least one switch, said network providing a radio-frequency path between adjacent overlapping conductive members in an outer region of the conductive members and wherein the switch incrementally alters a reactance of the network.
Claim 48
Dependent Claim
62 words
An antenna comprising: a plurality of overlapping conductive surface members with a space between adjacent members; at least one electrical network comprising at least one reactive element and at least one switch, said network providing a radio-frequency path between adjacent overlapping conductive members in an outer region of the conductive members and wherein the switch incrementally alters a reactance of the network.
Claim 49
Dependent Claim
25 words
The antenna of claim 43 , wherein the network provides a different value of reactance between the conductive members for each state of the switch.
Claim 50
Dependent Claim
17 words
The antenna of claim 44 , further comprising a means for changing the state of the switch.
References Cited (Backward Citations)
US4827266A
Cited
US4780724A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-01-07 | 2005-07-09 | 2006-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-01-07 | 2009-07-09 | 2010-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-01-07 | 2013-07-09 | 2014-01-08 | $7700.00 | Window Closed / Lapsed |