| 摘要 |
PROBLEM TO BE SOLVED: To make the power resistance of a filter small, to reduce the saturation level of a low noise amplifier and also noise generated by a phase shifter and to improve a receiving sensitivity. SOLUTION: In this receiver consisting of an antenna 1 composed of the parallel of a plurality of antenna elements a plurality of phase shifters 3 enclosed by a heat shielding case 8 and cooled by a cooling means, receiving band filters 5, the low nose amplifiers 6 and a synthesizer 4, an output signal of each antenna element is subjected to phase shifting adjustment in each phase shifter, filtered by each receiving band filter, amplified by each low noise filter and subsequently synthesized by the synthesizer. |
