Wave transmission lines and networks – Attenuators
Reexamination Certificate
2007-09-10
2009-02-17
Jones, Stephen E (Department: 2817)
Wave transmission lines and networks
Attenuators
C330S310000, C330S284000, C330S289000
Reexamination Certificate
active
07492236
ABSTRACT:
A gain compensation circuit, applied to a microwave transceiver, includes a gain adjuster, a first attenuator and a second attenuator. The gain adjuster is disposed between a first amplifier and a filter for adjusting a nominal gain of the microwave transceiver. The first attenuator is disposed between the filter and a second amplifier for providing a first gain compensation. The second attenuator is electrically connected to the output of the second amplifier for providing a second gain compensation. The first and second gain compensations keep the gain of the microwave transceiver at a constant value under varying temperature conditions, and the first and second attenuators are used to reduce the degradation of return loss and noise figure of the microwave transceiver.
REFERENCES:
patent: 6418301 (2002-07-01), Le et al.
patent: 7133651 (2006-11-01), Kwak
Ho Yueh Lung
Wu Te Hua
Connolly Bove & Lodge & Hutz LLP
Jones Stephen E
Microelectronics Technology Inc.
Wyche Myron K.
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