Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2005-09-02
2009-06-16
Mehrpour, Melody (Department: 2617)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
Reexamination Certificate
active
07548737
ABSTRACT:
A system for transmitting and receiving data is provided. The system includes a direct-conversion receiver that receives a signal modulated on a carrier frequency signal. The direct-conversion receiver includes one or more subharmonic local oscillator mixers. A local oscillator is connected to the direct conversion receiver, and generates a signal having a frequency equal to a subharmonic of the carrier frequency signal. A transmitter is connected to the local oscillator, which uses the local oscillator signal to transmit outgoing data.
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Kawakami et al., “Fully Monolithic Integrated Even Harmonic Quadrature Ring Mixer With an Active Matched 90 Degree Power Divider for Direct Conversion Receiver,” Information Technology R & D Electric Corp., Kanagawa, Japan, 1997, IEEE MTT-S Digest.
Domino William J.
Griffin Scott A.
Rozenblit Dmitriy
Mehrpour Melody
Skyworks Solutions Inc.
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