Method for selecting an amplifier for use in a personal communic

Details Method for selecting an amplifier for use in a personal communic Method for selecting an amplifier for use in a personal communic

1997-12-18

2000-01-04

Vo, Nguyen

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455 673, H04B 138, H04M 100

Patent

active

060119799

ABSTRACT:
A method for selecting a tower-top low-noise amplifier (LNA) having a given level of performance which matches the level of performance needed for a PCS base station includes providing a PCS base station having an antenna, a cable, and a cell. The antenna, the cable, and the cell have an associated loss and noise figure. The noise figure of the antenna is estimated using internal and external antenna noise temperatures. The external antenna noise temperature accounts for contributions due to lightning noises, atmospheric emission noises, celestial noises, ground noises, and man-made noises including microwave oven noises. The noise figure of the PCS base station is then estimated based on the noise figures of the antenna, the cable, and the cell. An LNA having a gain and a noise figure which cause the estimated noise figure of the PCS base station to fall within an acceptable range is then selected for the PCS base station.

REFERENCES:
patent: 4905308 (1990-02-01), Davidson
patent: 5109535 (1992-04-01), Kume et al.
patent: 5361258 (1994-11-01), Arnold et al.
patent: 5604925 (1997-02-01), O'Malley et al.
patent: 5606729 (1997-02-01), D'Amico et al.
patent: 5920813 (1999-07-01), Evans et al.

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