Frequency translating repeater with low cost high performance local oscillator architecture
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United States of America Patent
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Jan 10, 2012
Grant Date -
Feb 8, 2007
app pub date -
Oct 12, 2006
filing date -
Jun 3, 2004
priority date (Note) -
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Abstract
A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, reduced pulling, and the like. Tunable LOs (441, 442) can be directly coupled to down-converters (413, 414) and up-converters (426, 427) for increased isolation, reduced phase noise, less stringent frequency accuracy, and a reduced potential for pulling.
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