Elias B Kpodzo

6388526, May 14, 2002

Jul 6, 2000

09/610795

Tom T. Daniel - Edison NJ
Elias Bonaventure Kpodzo - Franklin Park NJ
Mark J. Van De Walle - Colts Neck NJ

Lucent Technologies Inc. - Murray Hill NJ

H03G 310

330285, 330136, 330140, 330141, 330281

Circuits for continuously varying the gain control for a low noise amplifier (LNA) of a wireless receiver are described. The gain, input third order intercept point (IIP ) and noise figure (NF) of an LNA are continuously varied according to the received power levels, causing the receiver to utilize less current at different power levels. At high gain levels the IIP and NF are at a minimum, while at low gain levels the IIP and the NF are at a maximum. By continuously varying the gain of an LNA throughout the operational range, the present invention achieves wider dynamic range and higher power efficiency. According to one aspect, the present invention includes a power coupler and a power detector which are utilized to produce a rectified voltage which is proportional to the input power or output power of an LNA. The rectified voltage is utilized by a control circuit which produces a signal which controls the gain, IIP and NF of the LNA. According to another aspect, diode circuitry is utilized to produce the rectified voltage.

20010040486, Nov 15, 2001

Mar 8, 1999

09/264051

ELIAS BONAVENTURE KPODZO - FRANKLIN PARK NJ, US
GREG ALAN NEASE - EAST WINDSOR NJ, US

H03H011/36

333/124000

A high power combiner arrangement with improved isolation between input ports for high power applications. In particular, in accordance with high power combiner arrangement, power combining logic is combined with a series of isolators such that at least one isolator is inserted between each power source, i.e., a signal source, and a corresponding input port to the power combining logic. The number of isolators inserted is determined as a function of the isolation requirements of the overall application. Advantageously, the degree of isolation achieved by the high power combiner is directly proportional to the number of inserted isolators placed between each power source. Furthermore, the insertion of a number of high power circulators between each power source and the power combing logic facilitates the achievement of higher isolation between the power sources with minimal degradation in signal characteristics.