Solid state power combiner for transmitter

Details Solid state power combiner for transmitter Solid state power combiner for transmitter

H - Electricity

03

H

325/50, 325/55

H03H 7/00 (2006.01) H01P 5/00 (2006.01) H03B 9/14 (2006.01) H04B 1/02 (2006.01)

Patent

CA 1095130

SOLID STATE POWER COMBINER FOR TRANSMITTER Abstract of the Disclosure An improved solid state transmitter (and elements therefor)adapted particularly well to pulsed operation at radio frequencies is disclosed. Such transmitter includes the combination of: A crystal-controlled oscillator producing a continuous wave output signal which, ultimately, determines the frequency of each transmitted pulse; a first oscillatory circuit, including a resonant cavity and at least one normally quiescent coaxial oscillator incorpo- rating an IMPATT diode; a second oscillatory circuit, including a resonant right cylindrical cavity and a plurality of normally quiescent coaxial oscil- lators, each one of such oscillators incorporating an IMPATT diode and a first and a second length of coaxial line having different radii and the same char- acteristic impedance, the length with the smaller radius being disposed paral- lel to the longitudinal axis of the resonant right cylindrical cavity in coupling relationship thereto and the length with the larger radius being flared outwardly to accommodate the IMPATT diode; and an improved modulator for periodically actuating all of the IMPATT diodes in such a manner that a pulsed output of the first oscillatory circuit is produced which remains lock- ed to the then existing continuous wave signal out of the crystal-controlled oscillator and the pulsed outputs of the coaxial oscillators in the second oscillatory circuit similarly are locked.

302008

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