| Summary: | 碩士 === 元智大學 === 通訊工程學系 === 98 === This main purpose of this article is to develop a wireless repeater for TV reception. It is desired to increase the signal quality and signal strength at a frequency band of 500-600MHz. This antenna is integrated into a multi-function smart antenna system that is designed for WiFi communication 2.4GHz.
The design concept is to use a pair of antennas that are used as receiving and transmitting antennas. In order to properly integrate them with the smart antenna system, the TV antennas utilize the support structures of system as a receiving antenna, and add a new antenna to transmit the amplified signal back into the space. To provide a proper isolation between these two antennas, polarization diversity was used, where the vertical and horizontal polarizations were used for the receiving and transmitting antennas. Wire antenna types were used.
A RF circuit aiming to amplify the signals was designed using existing RF components. Numerical simulation and experimental measurement were performed and presented to validate the current design. Promising results and permance enhancement were obtained.
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