Device for adjustment of antenna-array beam direction and phase position in RFID reader-writer
A technology of beam direction and antenna array, which is applied in the field of RFID identification, can solve problems such as the inability to realize accurate control of antenna array radiation beams
Active Publication Date: 2014-02-26
INVENGO INFORMATION TECH
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide an adjustable RFID reader-writer capable of realizing accurate control of the radiation beam direction of the antenna array in view of the above-mentioned defects in the prior art that cannot realize accurate control of the radiation beam direction of the antenna array. Antenna Array Beam Direction and Phase Apparatus
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[0022] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0023] Such as figure 1 As shown, in an embodiment of a device for adjusting the beam direction and phase of an antenna array in an RFID reader in the present invention, the device includes a central controller 101, and the central controller 101 is connected to a plurality of signal adjustment channels through a high-speed data bus 102 , to control the parameters of the signal adjustment channels, so as to accurately adjust the signal, so that the signals transmitted by these signal adjustment channels to their corresponding antenna elements can obtain the set shape in the desired direction. In this embodiment, the central processor 101 is also connected to the memory 103, from which the previously stored signal adjustment data and signal adjustment rules (adjustment strategies) are obtained, and the central processor 101 uses these data to generate con...
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The invention relates to a device for adjustment of antenna-array beam direction and phase position in an RFID reader-writer. The device includes parallel signal-conditioning channels which are in one-to-one correspondence to antenna array elements in an antenna array. Each signal-conditioning channel includes a baseband processing and phase-position adjustment module, a radio-frequency module and an antenna-array-element interface module, which are connected in order. The baseband processing and phase-position adjustment module is used for carrying out baseband processing on signals and adjusting phase positions of the signals. The radio-frequency module is used for carrying out frequency-conversion processing on received signals. The antenna-array-element interface module is connected with the antenna array elements and the radio-frequency module. The device for the adjustment of the antenna-array beam direction and the phase position in the RFID reader-writer has the following beneficial effects: accurate control of radiation-beam direction of the antenna array can be realized.
Description
technical field [0001] The invention relates to the field of RFID identification, and more specifically relates to a device for adjusting the beam direction and phase of an antenna array in an RFID reader-writer. Background technique [0002] RFID identification technology relies on its reader-writer to send wireless signals to the electronic tag, and the electronic tag returns the stored information to the reader-writer in the form of backscattering, or modifies the internal data according to the instruction of the reader-writer. Generally speaking, in order to expand the tag reading range of the reader, improve the multi-tag processing capability, and realize the positioning and tracking of specific tags, a multi-antenna array with adjustable phase is often used. The traditional phase-adjustable multi-antenna array generally adds a fixed phase to the transmitted signal after mixing and before entering the antenna array to achieve the purpose of phase adjustment. At thi...
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IPC IPC(8): H01Q3/42H01Q1/22
Inventor 关庆阳黄华辉盖盛焘
Owner INVENGO INFORMATION TECH