Arrangement for measuring condition of antenna in mobile telepho

Details Arrangement for measuring condition of antenna in mobile telepho Arrangement for measuring condition of antenna in mobile telepho

1997-11-18

2000-10-10

Bost, Dwayne D.

Telecommunications

Receiver or analog modulated signal frequency converter

Measuring or testing of receiver

455 674, 455 671, 455129, 455423, H04B 1700

Patent

active

061310204

ABSTRACT:
An arrangement for measuring a condition of an antenna in a mobile telephone system has a radio equipment and a transmission line connecting the radio equipment to the antenna. The transmission line has opposite end sections, whereby one of the end sections of the transmission line is closer to the antenna than the other of the end sections of the transmission line. A masthead amplifier is at the one of the end sections of the transmission line, the masthead amplifier having first and second duplex filters, an RX branch, a TX branch and an amplifier element in the RX branch, wherein the RX branch, the TX branch and the amplifier element are between the duplex filters. The standing wave ratio is measured and a measuring value calculated therefrom within the one end section of the transmission line for measuring the condition of the antenna.

REFERENCES:
patent: 4262246 (1981-04-01), Fujii
patent: 4584650 (1986-04-01), Kozuch
patent: 5408690 (1995-04-01), Ishikawa et al.
patent: 5548820 (1996-08-01), Victorin
patent: 5572510 (1996-11-01), Koivu
patent: 5574981 (1996-11-01), Ahonen
patent: 5590415 (1996-12-01), Peltola et al.

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