| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a high frequency circuit, a composite high frequency component and communication equipment for moving object corresponding to first and second communication systems in which frequency bands to be used are proximate, and a third communication system in which a frequency band to be used is away from first and second systems. SOLUTION: A high frequency circuit 11 is provided with a diplexer part 20 for coupling transmitting signals in the case of transmitting, sending the resulting signal to an antenna ANT side, decoupling a received signal in the case of receiving and sending it to the communication system side. Besides, a first high frequency switch part 40 is provided for switching transmitting/ receiving of the first communication system and transmitting/receiving of the second communication system. Further, this circuit is provided with a second high frequency switch part 50 capable of switching transmitting and receiving of the second communication system and a third high frequency switch part 60 capable of switching transmitting and receiving of the third communication system.</p> |
