Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1995-12-20
1998-03-24
Chin, Tommy P.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455326, 455323, H04B 128, H04B 126
Patent
active
057323453
ABSTRACT:
A double balanced dual-quad transformer dual field effect transistor (FET) mixer is disclosed using a first and second (FET) which have their gates electrically connected together, such that the first and second FET are connected in series. The mixer achieves improved isolation by using a first and second diplexer, and an RF and IF coupling network which comprises a flux-coupled IF transformer and a transmission line RF balun.
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Ananian R. Michael
Chin Tommy P.
Vincent David
Watkins-Johnson Company
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