A compact smart antenna for WiMAX radio

Authors:
Yikun Huang;Will Tidd;Andy Olson;Richard S. Wolff
Affiliations:
Montana State University, Department of Electrical and Computer Engineering, Bozeman, MT;Montana State University, Department of Electrical and Computer Engineering, Bozeman, MT;Montana State University, Department of Electrical and Computer Engineering, Bozeman, MT;Montana State University, Department of Electrical and Computer Engineering, Bozeman, MT
Venue:
MWS'09 Proceedings of the 2009 IEEE conference on Mobile WiMAX
Year:
2009

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Abstract

In this paper, we present our design and development of a compact, light weight, high gain smart antenna for WiMAX radio systems. The antenna head is an 8-monopole uniform circular array placed on a ground plane with ground skirt. The operation frequency is 5.8GHz. The array is connected to an 8-channei beamforming board via low-loss coax. The 8-channel signal combines through a power splitter/combiner which directs the signal to/from the WiMAX radio. An FPGA chip is on board to control the digital phase shifters, attenuators and switches for T/R synchronization, signal searching, beamforming, and tracking. The test results show that the smart antenna is capable of tracking mobile targets, communicating directionally with desired users, suppressing interference and jamming, and enabling a long range with high throughput and reliable connection.