The developments of smart antenna system at Da Yeh University

The effects of multiple paths and channel capacity are concerned in the communication system. The SAS (smart antenna system) can solve these problems. The SAS can be separated by adaptive antenna array and MBA (multiple beams antenna array). In this paper, the MBA is discussed. There are different types of SAS that are developed in Taiwan for the applications of cellular phone system in GSM, WCDMA, and WLAN (wireless local access network). Key components such as wideband RP radiators and different kinds of RF BFN are developed for SAS. Several types of SAS with multiple beams and narrower beamwidth are developing and testing at Da Yeh University. The test results are quite agreed with that of simulation.