| 摘要 |
This invention relates to a receiver system in a base station which receives signals of such a mobile communication as an Analogy Cellular, a Digital Cellular, a Code Division Multiple Access (CDMA) Cellular, a Personal Communication Service (PCS), a Trunked Radio System (TRS), a Dual Paging, and a Wireless Local Loop (WLL). when the receiver system of the mobile communication base station is established outdoors, by establishing a thermal electric module with small volume, light weight, high reliability, and excellent durability in a bandpass filter (or duplex filter), a low noise amplifier, or a low-converter to be maintained at a constant temperature without a need of a refrigerant and such a mechanical driving portion as a condenser fan and employing a control circuit for controlling the thermal electric module within a proper temperature range, the outdoor receiver system can be operated in a constant temperature range so that the deterioration of characteristics caused by the change of temperature of the receiver system under a poor outdoor environment can be protected.
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