Patent ID: 9124241
Filing Date: 2015-09-01
Classification: H03H,H04B

Abstract:
1. An impedance matching apparatus, comprising: an RF front end generating an RF signal; an antenna outputting the RE signal generated from the RF front end; a reflected power measuring module disposed between the RF front end and the antenna and measuring a reflection coefficient according to the RF signal from the antenna; a matching unit disposed between the reflected power measuring module and the antenna and adjusting impedance so that the reflection coefficient is minimized; a first switch module disposed between the RF front end and the reflected power measuring module to selectively switch the RF signal onto a bypass path or an RF path; a second switch module disposed between the matching unit and the antenna to selectively switch the RF signal onto the path or the RF path; and a controller detecting a frequency of the RF signal by using the reflection coefficient and allowing the RF signal to be switched onto the bypass path if the frequency is included in a predetermined frequency range, wherein the bypass path directly connects the RF front end and the antenna by the first and the second switch modules.