Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1997-07-28
1999-09-14
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455330, 343786, H04B 126
Patent
active
059536446
ABSTRACT:
In a microwave transmission system a microwave signal is transmitted by a transmitter (1) using an antenna (2) to a receiver (4) which employs an antenna (3). The received signal is coupled to a mixer (17) via a waveguide section (15) having a cut off frequency being higher than the frequency of the signal generated by the local oscillator unit (18). In this way undesired emission of local oscillator signal is avoided. Furthermore no additional image rejection filter is required.
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Clarke Ian Mc.Colloch
Kool Leo
Bhattacharya Sam
Eisenzopf Reinhard J.
Slobod Jack D.
U.S. Philips Corporation
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