Communication card and communication device

Abstract

This communication card or communication device includes: an antenna 101 for transmitting/receiving communication waves; a variable matching unit 102a which can vary a circuit parameter; a directional coupling unit 103 for extracting a reflected signal from the antenna 101; a detection unit 110 for extracting the amplitude of the reflected signal; a control unit 109 for outputting a control signal; an amplifier 104 for amplifying a high frequency signal at a RF band; a frequency converter 105 for converting an IF band signal into a RF band signal or a RF band signal into an IF band signal; a modulator/demodulator 106 for modulating an IF signal to obtain a baseband signal at the transmission and demodulating an IF signal to obtain a baseband signal at the receiving; a baseband processor 107 for processing the baseband signal; and a card interface 108 for exchanging data with an information device. This communication card or communication device has a miniaturized part that protrudes from the body of the communication device as well as prevents deterioration of the antenna characteristics, and further makes the antenna portion hardly broken.

Dependencies are inferred from the claim text.