On frequency repeater with AGC stability determination

Details On frequency repeater with AGC stability determination On frequency repeater with AGC stability determination

2008-05-20

2011-12-06

Trinh, Tan (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Transmitter/receiver feedback compensation

C455S007000, C455S009000, C455S011100, C455S013100, C455S067110

Reexamination Certificate

active

08073387

ABSTRACT:
An on frequency repeater for wireless networks with feedback oscillation detection is disclosed. The on frequency repeater includes an automatic gain control loop which samples amplified signal envelope. The automatic gain control loop is monitored and a characteristic saw tooth pattern in the gain control loop indicating feedback oscillation is detected. A nonlinear gain expander circuit may be periodically activated to allow feedback oscillation detection in repeater applications employing linearized amplifiers.

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International Search Report and Written Opinion for International Application No. PCT/US2008/006473 dated Aug. 8, 2008, 8 pages.

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