Wave transmission lines and networks – Coupling networks – Delay lines including long line elements
Patent
1985-05-28
1987-01-20
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Delay lines including long line elements
333156, 333161, H01P 1185
Patent
active
046382690
ABSTRACT:
A reflective hybrid analog phase shifter is detailed which is operable in the X-band, and which exhibits minimal phase shift variation with higher power loadings. A pair of back-to-back connected Schottky varactor diodes are serially connected to each of the phase shifting ports of a 3 dB coupler. The Scottky varactor diodes are reverse biased to permit continuous variation of the phase shift as a function of analog bias potential. A monolithically fabricated implementation of this circuit design is detailed.
REFERENCES:
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patent: 4205282 (1980-05-01), Gipprich
patent: 4288763 (1981-09-01), Hopfer
patent: 4529994 (1985-07-01), Sakai
Dawson et al.,-"An Analog X-Band Phase Shifter", IEEE 1984 Microwave and Millimeter Wave Monolithic Circuit Symposium Digest of Papers, May 29, 1984, pp. 6-10.
Swartz et al.,-"Large-Area Varactor Diode for Electrically Tunable, High Power UHF Bandpass Filter", IEEE Trans. on Electron Devices, vol. ED-27, No. 11, Nov. 1980; pp. 2146-2151.
Hughes et al.-"Mis and Schottky Barrier Microstrip Devices", Proceedings of the IEEE, Nov. 1972; pp. 1460-1461.
Gould et al.,-"Semiconductor Microwave Control Devices", Microwave Associates, Burlington, Mass., presented at Nerm 1961; pp. 1-11.
Conti Anthony L.
Dawson Dale E.
Dickens Lawrence E.
Lee Soong H.
Shade Gary F.
Nussbaum Marvin L.
Sutcliff W. G.
Westinghouse Electric Corp.
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