Wave transmission lines and networks – Attenuators
Patent
1996-06-05
1999-06-29
Gensler, Paul
Wave transmission lines and networks
Attenuators
333164, H01P 122
Patent
active
059173858
ABSTRACT:
A split power control circuit includes a solid state switch and a circuit or circuit element, such as a relatively large resistance or reactance connected between an RF signal line and ground. In order to provide relatively more precise control and thus relatively finer adjustment of the RF signal line, the RF signal line is split into a plurality of branches, with the switched control circuit or element connected to one or more of the branches. In another embodiment of the present invention, a solid state switch and serially connected circuit or circuit element, such as a resistance or reactance, are connected between an RF signal line and ground. The gate terminal of the solid state switch is capacitively coupled to the switch terminal (i.e. drain or source) connected to the RF signal line, forcing the gate bias element to become a fixed, rather than switched, load, thereby minimizing errors due to the gate biasing element and enabling tuning reactances to be used to compensate for such gate loads.
REFERENCES:
patent: 5066930 (1991-11-01), Morse
patent: 5128639 (1992-07-01), Ueda et al.
patent: 5519349 (1996-05-01), Nakahara
patent: 5541554 (1996-07-01), Stengel et al.
Gensler Paul
TRW Inc.
Yatsko Michael S.
LandOfFree
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