Double balanced diode mixer with high output third order...

Details Double balanced diode mixer with high output third order... Double balanced diode mixer with high output third order...

2006-01-31

2006-01-31

Tran, Pablo N. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S323000, C455S327000, C455S328000, C455S330000

Reexamination Certificate

active

06993312

ABSTRACT:
A double balanced mixer consisting of an RF balun, a local oscillator balun and a diode “quad” bridge circuit connected between the two baluns and where the IF output is taken at the center tap of the RF balun secondary transformer. A second harmonic termination consisting of an RLC resonant circuit is coupled across the diode bridge at the RF side. Each arm of the diode bridge, moreover, includes three series connected diodes. The mixer is in the form of a microminiature integrated circuit (MMIC) using HBT emitter-based junction diodes fabricated on a gallium arsenide (GaAs) substrate.

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