Archimedes spiral antenna of graded dielectric constant with three frequency light quantum band-gap

An Archimedes spiral and photonic bandgap technology, which is applied in antennas, antenna arrays, resonant antennas and other directions to achieve the effects of good radiation characteristics, good omnidirectional radiation performance and low cost

Inactive Publication Date: 2012-07-04
XIAMEN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0008] At present, the combination of ceramic substrate with gradual dielectric constant, Archimedes spiral antenna and PBG structure realizes three-band operation, and is applied in RFID system and 3G system mobile terminal in 0.902~0.928GHz, 1.92~2.17GHz and 2.4~ 2.4835GHz The related technologies of the three working frequency bands have not been reported

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  • Archimedes spiral antenna of graded dielectric constant with three frequency light quantum band-gap
  • Archimedes spiral antenna of graded dielectric constant with three frequency light quantum band-gap
  • Archimedes spiral antenna of graded dielectric constant with three frequency light quantum band-gap

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with embodiments and accompanying drawings.

[0024] see figure 1 with figure 2 , the present invention is provided with double-sided silver-plated square ceramic substrate 3, the silver-plated layer on one side of the ceramic substrate 3 is an Archimedes spiral plate structure, and the silver-plated layer on the other side of the ceramic substrate is a photonic bandgap structure.

[0025] The Archimedes spiral sheet structure 1 is a vortex-shaped spiral structure, with two Archimedes spiral arms 11 and 12 that rotate from the inside to the outside, and a connecting arm 13 and two spiral arms 11 The same structure and size as 12, and the same rotation direction and rotation angle, there is a phase difference between the two spiral arms 11 and 12, and the phase difference is 180 0 , the inner ends of the two helical arms 11 and 12 are the starting ends, and the outer ends of the two helical arms 11 a...

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Abstract

The invention relates to a porcelain Archimedes' screw antenna with a gradually variable three-frequency photon band gap specific inductive capacity, relating to an Archimedes' screw antenna. The invention provides the porcelain Archimedes' screw antenna with a gradually changed three-frequency photon band gap specific inductive capacity, which has small size, large bandwidth, low return loss andomnidirectional radiation characteristic and can work in three frequency bands. A double-face silver coating porcelain baseplate is arranged, and the porcelain baseplate is composed of at least one porcelain material layer with gradually variable specific inductive capacity; the silver coating on one face of the porcelain baseplate of an Archimedes' screw structure, and silver coating on the other face of the porcelain baseplate is of a photon band gap structure.

Description

technical field [0001] The invention relates to an Archimedes spiral antenna, in particular to a three-frequency photonic bandgap dielectric constant gradient ceramic Archimedes spiral antenna. 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 applied to many industries such as logistics, manufacturing, and public information services, which can realize efficient management and operation, and further enhance the high-tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q5/00H01Q9/04H01Q21/00H01Q5/28H01Q5/314
Inventor 周建华罗勇林斌郑建森李伟文游佰强熊兆贤
Owner XIAMEN UNIV
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