H - Electricity – 03 – D
Patent
H - Electricity
03
D
325/110
H03D 7/00 (2006.01) H03D 7/02 (2006.01) H03D 9/06 (2006.01)
Patent
CA 1128135
ABSTRACT OF THE DISCLOSURE A microwave mixing circuit comprises a main trans- mission line having an input port for receiving an input high frequency and an output port, a band pass filter responsive to a local oscillation frequency, first and second band stop filters, and a mixing diode connected to the output port. The local oscillation frequency applied via the band pass filter to the main transmission line is prevented from being transmitted toward the input port because of the first band stop filter, while an image frequency produced by the diode is reflected by the second band stop filter to be applied to the diode.
328627
Makimoto Mitsuo
Onishi Hiroshi
Yamashita Sadahiko
Matsushita Electric Industrial Co. Ltd.
Robic Robic & Associes/associates
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