Patent US3931599A successfully refreshed from Google Patents.
US3931599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid phase inverter
Assignee: Individual
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Filing: 1975-01-30
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Granted: 1976-01-06
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Expires: 1995-01-30
Abstract
Abstract A microwave hybrid junction with two of the four terminal pairs terminated with matched switchable impedances driven by interconnected circuitry such that if one of the impedances is in its high impedance state, the other is always in its low impedance state and vice versa, providing high energy transfer over a wide band with selectable phase inversion of the output. In combination with other hybrid junctions, a wide and flexible variety of input and output conditions can be obtained by switching the switchable impedances.
Inventors
- 👤 Edward Salzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:27
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/185
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
63 words
A hybrid junction phase inverter comprising: a. a hybrid-T junction having a first pair of branches connected as input/output terminals and a second pair of branches connecting as switching terminals; b. first and second switchable impedances connected to provide opposite and reversible impedance terminations of said second pair of branches; and c. switching means for reversing the impedance states of said switchable impedances.
Claim 2
Dependent Claim
63 words
A hybrid junction phase inverter comprising: a. a hybrid-T junction having a first pair of branches connected as input/output terminals and a second pair of branches connecting as switching terminals; b. first and second switchable impedances connected to provide opposite and reversible impedance terminations of said second pair of branches; and c. switching means for reversing the impedance states of said switchable impedances.
Claim 3
Dependent Claim
47 words
A hybrid junction phase inverter according to claim 1 wherein said switching means is a flip-flop having first and second complementary outputs, said first complementary output being connected to switch said first switchable impedance and said second complementary output being connected to switch said second switchable impedance.
Claim 4
Dependent Claim
31 words
A hybrid junction phase inverter according to claim 1 wherein said switchable impedances are diodes and one is always biased to high conductivity while the other is biased to low conductivity.
Claim 5
Dependent Claim
44 words
A hybrid junction phase inverter according to claim 3 wherein said second pair of branches are symmetrical branches of said hybrid-T junction and reversing the impedances shifts the phase of a signal at the output terminal of said first pair of branches by 180°.
Claim 6
Dependent Claim
175 words
A hybrid junction switching configuration comprising: a. first, second, third and fourth hybrid junctions each having first, second, third and fourth branches: b. means to connect the second and third branches of the first hybrid junction to the first branches of said second and third hybrid junctions respectively; c. means to connect the fourth branches of said second and third hybrid junctions to the second and third branches respectively of said fourth hybrid junction; d. first, second, third and fourth impedances connected as terminations of the second and third branches respectively of the second and third hybrid junctions respectively; and e. means to switch said impedances between relatively low and high impedance states asymmetrically with respect to each of said second and third hybrid junctions whereby one of the second and third branches of each of said second and third hybrid junctions is terminated in a high impedance while the other is terminated in a relatively low impedance and switching reverses the impedance conditions for at least one of said second and third hybrid junctions.
Claim 7
Dependent Claim
175 words
A hybrid junction switching configuration comprising: a. first, second, third and fourth hybrid junctions each having first, second, third and fourth branches: b. means to connect the second and third branches of the first hybrid junction to the first branches of said second and third hybrid junctions respectively; c. means to connect the fourth branches of said second and third hybrid junctions to the second and third branches respectively of said fourth hybrid junction; d. first, second, third and fourth impedances connected as terminations of the second and third branches respectively of the second and third hybrid junctions respectively; and e. means to switch said impedances between relatively low and high impedance states asymmetrically with respect to each of said second and third hybrid junctions whereby one of the second and third branches of each of said second and third hybrid junctions is terminated in a high impedance while the other is terminated in a relatively low impedance and switching reverses the impedance conditions for at least one of said second and third hybrid junctions.
Claim 8
Dependent Claim
31 words
A hybrid junction switching configuration according to claim 5 wherein said first and fourth hybrid junctions are phase quadrature hybrid junctions and said second and third hybrid junctions are hybrid-T junctions.
Claim 9
Dependent Claim
22 words
A hybrid junction switching configuration according to claim 5 wherein said first, second, third and fourth hybrid junctions are all hybrid-T junctions.
Claim 10
Dependent Claim
68 words
A hybrid junction switching configuration according to claim 7 wherein said means to switch said impedances comprises first and second flip-flops and a trigger logic circuit for triggering said flip-flops in a logical sequence said first flip-flop having complementary outputs connected to the respective impedances of said second hybrid junction and said second flip-flop having its complementary outputs connected to the respective impedances of said third hybrid junction.
Claim 11
Independent Claim
82 words
A method providing a broad band 180° microwave phase shift comprising: a. terminating two symmetrical branches of a hybrid-T junction with semiconductor diodes; b. connecting a signal source to a third branch of said junction; c. connecting a signal receiver to a fourth branch of said junction; and, d. switching said two semiconductor diodes asymmetrically so that a high conductivity condition in one is always matched by a low conductivity condition in the other and the conductivity conditions are reversed upon switching.
Claim 12
Independent Claim
82 words
A method providing a broad band 180° microwave phase shift comprising: a. terminating two symmetrical branches of a hybrid-T junction with semiconductor diodes; b. connecting a signal source to a third branch of said junction; c. connecting a signal receiver to a fourth branch of said junction; and, d. switching said two semiconductor diodes asymmetrically so that a high conductivity condition in one is always matched by a low conductivity condition in the other and the conductivity conditions are reversed upon switching.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |