Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1998-02-10
2000-05-02
Urban, Edward F.
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
375226, 375340, 375349, H04B 138
Patent
active
060583185
ABSTRACT:
A reference antenna element out of plural antenna elements directed to the same sector is set as a first antenna element; a receiver for frequency conversion of the signal received by the first antenna element is set as a first receiver; any antenna element different from the first antenna element is set as a second antenna element; and a receiver for frequency conversion of the signal received by the second antenna element is set as a second receiver. The output signals of the first and second receivers relative to a specific up-signal are supplied to phase compensation calculator means, which then calculates the phase compensation amount representing the phase amount of the difference between the output-signal phase difference of the first and second receivers and the input-signal phase difference of the first and second receivers.
REFERENCES:
patent: 4328499 (1982-05-01), Anderson et al.
patent: 5592180 (1997-01-01), Yokev et al.
patent: 5893033 (1999-04-01), Keskitalo et al.
patent: 5905949 (1999-05-01), Hawkes
patent: 5960349 (1999-09-01), Chheda et al.
Kobayakawa Shuji
Seki Hiroyuki
Tanaka Yoshinori
Toda Takeshi
Tsutsui Masafumi
Fujitsu Limited
Tran Congvan
Urban Edward F.
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