US3899757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square turning meander line
Assignee: Fujitsu Ltd
•
Filing: 1974-03-05
•
Granted: 1975-08-12
•
Expires: 1994-03-05
Abstract
Abstract A square turning meander line is disclosed which is a kind of strip line having alternating bends, adapted for use as a pulse compressor or a delay equalizer. A continuous line is formed to extend on both the top and bottom surfaces of a dielectric plate, which plate is disposed between top and bottom earth conductors in spaced and parallel relation thereto. The continuous line consists of first and second pluralities of parallel conductor lines arranged on respective top and bottom surfaces of the dielectric plate in opposed relationship; the lines are connected at first commonly disposed ends to the corresponding, opposed conductor lines on the other surface of the dielectric plate and each line is connected at the other end to an adjacent line of the same surface, in alternate succession to those on the other surface of the dielectric plate.
Inventors
- 👤 Takakiyo Nakagami
- 👤 Kazunari Hatanaka
- 👤 Masayuki Ishizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:54
CPC Classifications
H; H01; H01P; H01P9/00; H01P9/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
A square turning meander line comprising: a dielectric plate having first and second parallel, generally planar surfaces, a continuous conducting line formed on said plate and disposed to include first and second pluralities of parallel conducting lines on said first and second surfaces, respectively, of said dielectric plate with corresponding ones of said lines of said first and second pluralities in opposed relationship, first commonly disposed ends of corresponding, opposed lines of said first and second pluralities thereof being connected and the other ends of adjacent lines of each plurality being connected in paired relationship and in alternate succession as to said first and second pluralities thereof, each of said lines being of a common length and of a common width selected in accordance with a desired frequency characteristic of the said meander line and adjacent said parallel lines of each said plurality plate being separated by a distance less than the said common width thereof, and first and second parallel, spaced earth conductors, said dielectric plate with said continuous line thereon being positioned in parallel relationship in the spaced between said first and second earth conductors.
Claim 2
Dependent Claim
187 words
A square turning meander line comprising: a dielectric plate having first and second parallel, generally planar surfaces, a continuous conducting line formed on said plate and disposed to include first and second pluralities of parallel conducting lines on said first and second surfaces, respectively, of said dielectric plate with corresponding ones of said lines of said first and second pluralities in opposed relationship, first commonly disposed ends of corresponding, opposed lines of said first and second pluralities thereof being connected and the other ends of adjacent lines of each plurality being connected in paired relationship and in alternate succession as to said first and second pluralities thereof, each of said lines being of a common length and of a common width selected in accordance with a desired frequency characteristic of the said meander line and adjacent said parallel lines of each said plurality plate being separated by a distance less than the said common width thereof, and first and second parallel, spaced earth conductors, said dielectric plate with said continuous line thereon being positioned in parallel relationship in the spaced between said first and second earth conductors.
Claim 3
Dependent Claim
38 words
A square turning meander line as in claim 1, wherein there is further provided dielectric material filling the spaces between the said first and second surfaces of said dielectric plate and said first and second earth conductors, respectively.
Claim 4
Dependent Claim
35 words
A square turning meander line as in claim 1, wherein said continuous line is formed on said dielectric plate by photoetching of conducting material initially provided on at least the corresponding surfaces of said plate.
Claim 5
Dependent Claim
48 words
A square turning meander line as in claim 1, wherein said continuous line further comprises first and second portions extending from the first and last of the parallel conducting lines of said continuous line to corresponding edges of said plate, to afford external electrical connections to said line.
Claim 6
Dependent Claim
26 words
A square turning meander line as in claim 4, wherein said first and second portions extend transversely of the parallel direction of said pluralities of lines.
References Cited (Backward Citations)
US3668569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |