Microstrip patch type radio frequency identification (RFID) tag antenna
An RFID tag and microstrip patch technology, applied in the field of RFID tag antennas, can solve the problems of increased RFID tag antenna dimensions, inconsistent RFID tag antennas, poor reading distance, etc., to achieve high-bandwidth identifiable range, The effect of improved reading and writing distance
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[0010] The specific implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0011] See figure 1 with figure 2 The microstrip patch RFID tag antenna 9 of the present invention has a substrate 2 and a radiating plate 1 attached to the upper surface of the substrate and a substrate bottom plate 3 respectively attached to the lower surface. The substrate 2 has short-circuit surfaces 4 on both sides.
[0012] The substrate bottom plate 3 of the present invention has a first open annular groove 5 and a second open annular groove 7, and the first open annular groove 5 and the second open annular groove 7 are coupled to reduce the resonant frequency of the RFID tag antenna 9. Improve the reading distance of RFID tag antenna.
[0013] As a preferred embodiment of the present invention, both the first open annular groove 5 and the second open annular groove 7 are square, the first open annular groove 5 has a first open...
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