| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system to perform high-frequency radio communication mutually between a plurality of communication terminals without being influenced by an ambient environment and in a stable state.SOLUTION: When radio communication is performed by transmitting and receiving a radio signal mutually between at least two communication terminals, each communication terminal comprises: an antenna 2 which is built in the communication terminal to perform radio communication; a radio transmission and reception section 3 for performing transmission and reception of a radio signal via the antenna; a power supply section 4 for supplying operational power to the radio transmission and reception section; and a stub line formation section 5 for forming a stub line connected in parallel with line of a transmission line L1 connecting between the antenna and the radio transmission and reception section. The stub line formation section includes: a first switching element group 1S which is switched to make the line length of the stub line variable; and a second switching element group 2S which is switched to make the stub line made variable by the first switching element group open or short-circuited. |
