Multi-octave differential upconverter

Details Multi-octave differential upconverter Multi-octave differential upconverter

2006-10-20

2009-06-02

Le, Thanh C (Department: 2618)

Telecommunications

Transmitter

Having harmonic radiation suppression

C455S118000

Reexamination Certificate

active

07542735

ABSTRACT:
An apparatus in one example comprises a differential amplifier and a differential mixer. The differential amplifier is configured to receive a multi-octave differential input signal and output an amplified multi-octave differential output signal. The differential amplifier is also configured to substantially reduce second order harmonic distortion of the amplified multi-octave differential output signal through common mode rejection. The differential mixer configured to multiply the amplified multi-octave differential output signal with a local oscillator input signal and output an up-converted sub-octave differential output signal. The multi-octave differential input signal and the up-converted sub-octave differential output signal comprise a substantially same bandwidth.

REFERENCES:
patent: 6996379 (2006-02-01), Khorram
patent: 2008/0064344 (2008-03-01), Kuo et al.
patent: 2008/0139139 (2008-06-01), Pan

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