| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna for both satellite broadcasting and digital terrestrial broadcasting which has a simple structure and is small in restriction of an installation location. SOLUTION: In this antenna 1 for both satellite broadcasting and digital terrestrial broadcasting which includes: a reflector 2 for reflecting a satellite broadcasting signal on a reflecting surface 2a in the form of a paraboloid of revolution; a radiator 3 arranged at the focal position of the reflecting surface 2a for receiving the satellite broadcasting signal reflected by the reflector 2; and a mixer circuit 4 for mixing the satellite broadcasting signal with a digital terrestrial broadcasting signal, the reflector 2 includes a slit 2b formed on the reflecting surface 2a at a predetermined length, and a power-feed part 2e for receiving the digital terrestrial broadcasting signal by a power-feed line 2d connected to a power-feed point 2c formed in the vicinity of the slit 2b, and the mixer circuit 4 mixes the satellite broadcasting signal received by the radiator 3 with the digital terrestrial broadcasting signal received by the power-feed part 2e. COPYRIGHT: (C)2010,JPO&INPIT
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