Telecommunications – Transmitter – Including tuning
Patent
1995-02-09
1996-06-25
Faile, Andrew
Telecommunications
Transmitter
Including tuning
455 8, 455103, 455 671, 333132, H01Q 1112, H04B 1700
Patent
active
055309216
ABSTRACT:
A local control mechanism for automatically parking an active combiner filter and activating an alternate combiner filter in an auto-tune combiner in a radio telecommunications network is resident entirely at a remote base station. The mechanism samples the radio frequency (RF) energy level on the active combiner filter in an auto-tune combiner and determines whether the measured RF energy level exceeds a predetermined RF energy threshold. The mechanism then determines the number of RF energy samples taken, compares this number to a trigger number, and parks the active combiner filter and switches to an alternate combiner filter when the number of consecutive RF energy samples below the RF energy threshold exceeds the trigger number.
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Alex Hill and Chris radeliffe "The Design of a GSM base-station tuneable combiner" Microwave engineering Europe pp. 57-58, 61-62 and 65 Oct. 1992.
Brunner Richard
Dulong Daniel
Arthur Gertrude
Faile Andrew
Telefonaktiebolaget LM Ericsson
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