High dynamic range mixer apparatus and balun therefor

Details High dynamic range mixer apparatus and balun therefor High dynamic range mixer apparatus and balun therefor

2007-11-27

2007-11-27

Le, Thanh Cong (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S330000, C333S026000

Reexamination Certificate

active

11016837

ABSTRACT:
A wide dynamic range mixer which has a high linearity passive balun fabricated on a Si substrate for receiving an input RF signal and an active balun for receiving a local oscillator signal. The active balun includes high frequency, low voltage SiGe transistors to achieve low power amplification of the local oscillator signal. The output signals of the baluns are provided to a non-linear diode quad mixer device which provides a desired IF signal.

REFERENCES:
patent: 5280647 (1994-01-01), Arai et al.
patent: 6674340 (2004-01-01), Quan et al.
patent: 7095998 (2006-08-01), Tatsumi et al.

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