Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1990-05-31
1992-03-10
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342 92, 342198, 342194, G01G 7285, G01G 734
Patent
active
050953133
ABSTRACT:
A gain control network having a phase splitter circuit responsive to an RF input signal for providing first and second RF signals that are out of phase relative to each other, a first series of switched gain control elements, and a second series of switched gain control elements substantially identical to the first series and commonly controlled therewith. The first series of gain control elements is responsive to the first RF signal for providing a first gain controlled signal, and the second series of switched gain control elements is responsive to the second RF signal for providing a second gain controlled signal. A phase combining circuit combines the first and second gain controlled signals to provide a gain controlled RF output. By performing gain control with two gain control channels having substantially identical circuits and common switching control, transient glitches in each of the channels are substantially identical and are substantially cancelled via the phase combiner.
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Jhu Edward
Patel Salim
Alkov Leonard A.
Denson-Low Wanda K.
Hughes Aircraft Company
Sotomayor John B.
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