초록 ▼

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 ma

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.

대표청구항 ▼

[ What is claimed is:] [1.] An outdoor receiver system in a mobile communication base station comprising:a container being separable into two and having connectors on the sides of said container and heat radiating plates on the upper and lower sides of said container;a receiving portion connected wi

[ What is claimed is:] [1.] An outdoor receiver system in a mobile communication base station comprising:a container being separable into two and having connectors on the sides of said container and heat radiating plates on the upper and lower sides of said container;a receiving portion connected with a coaxial cable penetrating the connectors and including a bandpass filter for passing through only a desired frequency band of an input signal and a low noise amplifier for amplifying an output signal from said bandpass filter;a metal plate provided at the bottom of said receiving portion for increasing thermal conduction;a thermal electric module connected to said metal plate for operating as a heating mode or a cooling mode according to the change of direction of the direct current;a controlling portion for controlling the operation of the thermal electric module according to the change of temperature of said receiving portion; anda power supplying portion for converting an alternating current into a direct current and then applying it to said receiver system;wherein said metal plate and said thermal electric module are combined with said bandpass filter and said low noise amplifier, respectively, of said receiving portion.