发明授权
US07652577B1 Systems and methods of beamforming in radio frequency identification applications 失效
射频识别应用中波束成形的系统和方法

Systems and methods of beamforming in radio frequency identification applications
摘要:
Systems and methods for beamforming in radio frequency identification (RFID) applications are disclosed. A beamforming system uses a distributed architecture and techniques for antenna beamforming using a feedback control loop to direct radio frequency (RF) energy onto a specific region, referred to as an interrogation zone, which includes a calibration node where one or more RFID tags may be located. The distributed architecture of the beamforming system is resistant to fading and shadowing effects, providing accurate RFID reader operation even in environments with multi-path reflections or environmental changes, such as people moving around or changes in the location of equipment.
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