Wireless repeater using a single RF chain for use in a TDD...

Details Wireless repeater using a single RF chain for use in a TDD... Wireless repeater using a single RF chain for use in a TDD...

2004-12-15

2010-11-30

Pan, Yuwen (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

C455S018000

Reexamination Certificate

active

07844216

ABSTRACT:
A repeater for re-transmitting an incoming RF signal comprising: a first antenna array for receiving the incoming RF signal; a second antenna array for transmitting an outgoing RF signal; and a transceiver for down-converting the incoming RF signal to a down-converted signal, processing the down-converted signal, and up-converting the processed signal to produce the outgoing RF signal. The first antenna array is cross-polarized with respect to the second antenna array. The repeater also comprises an echo processor for attenuating in the down-converted signal an echo signal associated with the outgoing RF signal. The echo processor delays transmission of the outgoing RF signal in order to minimize the echo signal.

REFERENCES:
patent: 4232400 (1980-11-01), Yamamoto et al.
patent: 2003/0072363 (2003-04-01), McDonald et al.
patent: 2004/0166802 (2004-08-01), McKay et al.
patent: 2005/0007636 (2005-01-01), Leung
patent: 2005/0059342 (2005-03-01), Engels et al.

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