H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/83
H04B 1/68 (2006.01) H03D 9/06 (2006.01)
Patent
CA 1154830
Abstract of the Disclosure In a microwave circuit for a parametric upper sideband down con- verter with real image frequency termination conductance, including a pump circuit supplying a pump signal, a parallel circuit at its input, an inter- mediate frequency circuit at its output, and a reactance diode coupling the parallel circuit and intermediate frequency circuit together, the parallel circuit is tuned approximately to the frequency of the pump signal; the inter- mediate frequency circuit is composed of a .pi. filter having a series branch containing a first inductance connected in series between the diode and the output of the microwave circuit, a first shunt branch located between the diode and the inductance and containing a first capacitance and a second shunt branch located between the inductance and the output of the microwave circuit and containing a second capacitance; the microwave circuit further includes a second inductance connected in series with the reactance diode; and the portion of the microwave circuit constituted by the diode, the second in- ductance and the first capacitance forms a resonant circuit tuned to the frequency of the pump signal.
343959
Maurer Robert
Schau Walter
Fetherstonhaugh & Co.
Licentia Patent-Verwaltungs-Gmbh
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