US4639694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power distribution circuit having center portions of isolation resistors connected together
Assignee: Mitsubishi Electric Corp
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Filing: 1985-04-23
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Granted: 1987-01-27
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Expires: 2005-04-23
Abstract
Abstract A power distribution circuit having two Wilkinson type bi-distribution circuits each of which halves and then distributes its input and formed of a microstrip on a dielectric substrate or a semiconductor substrate. The input terminals of the two Wilkinson type bi-distribution circuits are connected, while substantially middle parts of resistances used as isolation resistances of the respective Wilkinson type bi-distribution circuits are connected by a metallic thin wire.
Inventors
- 👤 Kiyoharu Seino
- 👤 Tadashi Takagi
- 👤 Fumio Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:06
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
204 words
A power distribution circuit for splitting a signal at an input terminal into four output signals at four output terminals comprising: a substrate, a first and second Wilkinson-type parallel bi-distribution circuit formed of a microstrip on said substrate, said first bi-distribution circuit including a first pair of planar conducting elements on said substrate extending between an input end and a first pair of said output teminals, means connecting the input end of said elements of said first bi-distribution circuit together and to said input terminal of said power distribution circuit, a first isolation resistor formed on said substrate shunting longitudinally between said first pair of output terminals, said second bi-distribution circuit including a second pair of planar conducting elements on said substrate extending between an input end and a second pair of said output terminals, means connecting the input end of said elements of said second bi-distribution circuit together and to said input terminal of said power distribution circuit, a second isolation resistor formed on said substrate shunting longitudinally between said second pair of output terminals, and said power distribution circuit including a metallic thin wire spaced from said substrate and connecting the longitudinal center portions of said first and second isolation resistors together.
Claim 2
Dependent Claim
204 words
A power distribution circuit for splitting a signal at an input terminal into four output signals at four output terminals comprising: a substrate, a first and second Wilkinson-type parallel bi-distribution circuit formed of a microstrip on said substrate, said first bi-distribution circuit including a first pair of planar conducting elements on said substrate extending between an input end and a first pair of said output teminals, means connecting the input end of said elements of said first bi-distribution circuit together and to said input terminal of said power distribution circuit, a first isolation resistor formed on said substrate shunting longitudinally between said first pair of output terminals, said second bi-distribution circuit including a second pair of planar conducting elements on said substrate extending between an input end and a second pair of said output terminals, means connecting the input end of said elements of said second bi-distribution circuit together and to said input terminal of said power distribution circuit, a second isolation resistor formed on said substrate shunting longitudinally between said second pair of output terminals, and said power distribution circuit including a metallic thin wire spaced from said substrate and connecting the longitudinal center portions of said first and second isolation resistors together.
Claim 3
Dependent Claim
30 words
A power distribution circuit according to claim 1 for splitting a signal of a predetermined wavelength wherein the metallic thin wires are each of a length less than said wavelength.
Claim 4
Dependent Claim
30 words
A power distribution circuit according to claim 1 further including metal island holding means for said metallic thin wire substantially in the longitudinal center portion of each said isolation resistor.
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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |