Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1997-09-24
1999-11-16
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455117, 455217, H04B 100
Patent
active
059873353
ABSTRACT:
At least the power portion of the transmitter and the front end of the receiver of a base station of a wireless communication system are advantageously co-located with the antenna (or antennae), typically atop a tower or other elevated feature. Such co-location however exposes the electronics to lightning damage. This is avoided by placement of the electronics and antenna into lightning protection apparatus that is transparent to rf radiation during lightning-quiescent conditions but is a Faraday cage during a lightning strike, reverting to the transparent condition at the conclusion of the strike. This is achieved by placement of the electronics and antenna inside a housing that comprises a dielectric chamber filled with ionizable gas in contact with electrodes selected such that, during a lightning strike, current can flow between the electrodes.
REFERENCES:
patent: 3654520 (1972-04-01), Graneau
patent: 3662083 (1972-05-01), Constant
patent: 5563471 (1996-10-01), Mitami
patent: 5652690 (1997-07-01), Mansfield et al.
patent: 5749178 (1998-05-01), Garmong
V. A. Avrutskii et al., Electrical Technology, No. 1, pp. 15-21 (1993).
S. C. Brown, Introduction to Electrical Discharges In Gases, John Wiley & Sons, pp. 211-225 (1966).
Knoedl, Jr. George
Kornblit Avinoam
Aoki Makoto
Eisenzopf Reinhard J.
Lucent Technologies - Inc.
Pacher Eugen E.
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