Wave transmission lines and networks – Coupling networks – With impedance matching
Patent
1975-10-23
1976-09-21
Chatmon, Jr., Saxfield
Wave transmission lines and networks
Coupling networks
With impedance matching
333 7D, 333 97S, 328 56, 307262, H03H 730
Patent
active
039822141
ABSTRACT:
The use of electronically variable phase shifters is required in phased array radar systems. Diode phase shifters are particularly well suited for use in phased array radar systems because they have size and weight advantage over other types of phase shifting components such as ferrite devices and traveling wave tubes and, in addition, offer the potential of cost reductions through the application of batch processing techniques. In accordance with the present invention, a 180.degree. phase bit is provided by two series diodes with three transmission line segments shunting each junction to ground through a common shunt diode. Operation is effected by the simultaneous forward or reverse biasing of the series and shunt diodes, thereby introducing a 180.degree. phase difference in a signal transmittal therethrough.
REFERENCES:
patent: 3295138 (1966-12-01), Nelson
patent: 3400405 (1968-09-01), Patterson
patent: 3568097 (1971-03-01), Hyltin
patent: 3916349 (1975-10-01), Ranghelli et al.
patent: 3931599 (1976-01-01), Salzberg
Chatmon, Jr. Saxfield
Himes Robert H.
Hughes Aircraft Company
MacAllister W. H.
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