Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1989-09-29
1990-09-04
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455327, 455328, H04B 126
Patent
active
049550799
ABSTRACT:
A subharmonic mixer is shown to comprise two pairs of matched antiparallel GaAs diodes disposed on a dielectric slab and operative with microstrip circuitry. By suppressing the fundamental mixing products, mixing the radio frequency signal with the second harmonic of a local oscillator (LO) signal and using relative phase differences of the LO signals in the two pairs of diodes, undesirable effects from spurious signals are minimized.
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patent: 4457022 (1984-06-01), Pydyk
patent: 4485488 (1984-11-01), Houdart
patent: 4509208 (1985-04-01), Sogo et al.
patent: 4654887 (1987-03-01), Murphy et al.
patent: 4817201 (1989-03-01), Bonato
Connerney William R.
Pavio Raymond T.
Raposo Mark E.
Round Winslow G.
Eisenzopf Reinhard J.
Faile Andrew
Maloney Denis G.
Mofford Donald F.
Raytheon Company
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