An X-Band Distributed Multi-Beam Antenna for Microwave Communication

In order to achieve high gain in the azimuth to cover 360-degree range., a distributed multi-beam antenna based on switch transformation technique is proposed. Each antenna can cover 45-degree range in the direction of azimuth (eight antennas cover 360 degree) and 30 degree in the direction of elevation., respectively. The light weight and low cost Aperture Coupled Microstrip Antenna (ACMSA) is designed to broaden the bandwidth of the traditional microstrip antenna. The CST MWS is used to simulate and optimize the antenna element. Based on the designed antenna element., an array antenna is introduced. The array antenna prototype is fabricated using PCB processing technique and the measurement for the array is conducted., the measured results show a good agreement with the simulation where the gain of the antenna is about 10.7dBi and the S11 parameter of the antenna is less than -10dB in the frequency range, respectively. 8 array antennas are assembled upon aluminum sustain structure to cover 360 degrees in the direction of azimuth and each array antenna can be selected by the switch to realize communication.