Rectangle array photon band-gap ceramic plane helical dual-frequency-band antenna of radio frequency recognition system

Abstract

The invention discloses a phonon band-gap ceramic plane spiral double frequency band antenna of a rectangular array in a radio frequency identification system, relating to a ceramic plane spiral antenna. The invention provides a phonon band-gap ceramic plane spiral double frequency band antenna of a rectangular array in a radio frequency identification system, which has small size, capability to work in a double frequency band, large bandwidth, lower return loss and omnidirectional radiation characteristic; the antenna is provided with a ceramic base plate, both surfaces of which are plated with silver layers, wherein the plated silver layer at one surface of the ceramic base plate is a helical ribbon structure and the plated silver layer at the other surface thereof is a rectangular array photon band gap structure; the helical ribbon structure is provided with two helical arms and one connecting arm, phase difference is arranged between the two helical arms and the internal end of the two helical arms is a beginning end and the external end thereof is a stopping end; the connecting end is arranged in the center of the helical ribbon structure, the both ends of the connecting arm is connected with the beginning end of the two helical arms, the connecting arm is provided with a central hole, and a feeding point is arranged in the sides of the central hole; the rectangular arrayphonon band-gap structure is provided with four columns and two lines of rectangular patches, wherein each line is provided with two rectangular patches and each column is provided with four rectangular patches; spacing is left between each rectangular patch and the ceramic base plate.

Description

technical field [0001] The invention relates to a ceramic planar helical antenna, in particular to a rectangular array PBG ceramic planar helical dual-band antenna for a radio frequency identification system. Background technique [0002] RFID radio frequency identification technology is a non-contact automatic identification technology realized by radio frequency communication that emerged in the 1990s, and has achieved a series of results in recent years. Among them, some achievements have begun to be applied in many fields, and will become another new generation technology that affects the global economy and human life after mobile communication technology and Internet technology. From a long-term point of view, this technology is closely integrated with the Internet, communication and other technologies, and is applied to many industries such as logistics, manufacturing, and public information services. It can realize efficient management and operation, and further enhan...

AI Technical Summary

Problems solved by technology

At present, the combination of ceramic substrate, planar helical antenna, and rectangular array PBG structure to achieve dual-band operation, and the application of related technologies in the two operating frequency bands of 0.902-0.928GHz and 2.4-2.4835GHz in RFID systems has not been reported.

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