A response-aware control method for analog adaptive array antenna

Analog device-based adaptive array antenna, such as RESAA (reactively steered adaptive array) and phased array antenna, is attractive and advantageous as a means for gain enhancement and interference suppression in wireless signal transmission/reception in terms of cost and power consumption. However, when the analog device for beamforming has a mechanical structure, a special control method is required taking into consideration its response and characteristic. This paper proposes a new beamforming method for an analog adaptive array antenna. Numerical results show that the proposed method has both good interference suppression and gain enhancement capabilities in an OFDM (orthogonal frequency division multiplexing)-based system, for instance, it can improve the SNIR (Signal to Noise plus Interference power Ratio) by 18-to-25 dB.