Plane helical microstrip antenna for 3G system mobile terminal

A mobile terminal, plane spiral technology, applied in the direction of the antenna, electrical components, radiating element structure, etc., to achieve the effect of broadband filtering, expanding the bandwidth, reducing the size and the generation of surface waves

Inactive Publication Date: 2006-09-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The data show that no one has applied the planar helical antenna to the frequency band of the third-generation mobile communication system terminal at 1920-2170MHz. At home and abroad, the planar helical antenna is mainly used in the high frequency band above 8GHz.

Method used

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  • Plane helical microstrip antenna for 3G system mobile terminal
  • Plane helical microstrip antenna for 3G system mobile terminal
  • Plane helical microstrip antenna for 3G system mobile terminal

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Embodiment Construction

[0018] The following embodiments will further illustrate the technical solutions and outstanding effects of the present invention in conjunction with the accompanying drawings.

[0019] see Figure 1-5 , the present invention is provided with a double-sided dielectric substrate, one side (front) is a helical wire dielectric substrate 1, and the other side (back) is a photonic bandgap dielectric substrate 2, and the dielectric substrate adopts epoxy resin glass cloth (FR4) dielectric substrate, and its dielectric The electrical constant is 4.4, the length and width of the dielectric substrate are both 5cm, and the thickness is 0.8mm. There are 2 arms on the helical dielectric substrate 1, and the 2 edges of each arm are different from the 2 starting angles by π / 2 The distance between the start point of the two helix lines and the end point of the helix line (called the maximum outer diameter of the helix line) R is 1.3 cm. There are 6 rectangular holes in 2 rows and 3 columns ...

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Abstract

This invention relates to a plane helical microstrip aerials in 3G system mobile terminal, the character of which is that the dimension is small, strip width is up to 250MHz, which can cover all the transmitting-receiving frequency band plane helical microstrip aerials in 3G system mobile terminal. And the mircrostrip aerials al has the double faced medium base board, one face is the spiral medium base board, the other face is the photon with interval medium base board, the base board is 4.9-5.1cm*4.9-5.1cm; on the spiral medium base board there arranges two arms, two borders of the arm are composed of spirals whose original angles' errand is pi/2, and the clearance between two spiral original lines is 0.2-0.4cm, the distance from the spiral original line to the spiral terminal line is 1.2-1.4cm; on the photon with interval medium base board there arranges 6 rectangle holes of 2 rows and 3 lists, the length of three rectangle holes in the 1 rows are all 2.1-2.3cm,and the length of three rectangle holes in the 2 rows are all 1.5-1.7cm. The width of the 1,2,3 list is 0.8- 1.0,1.3-1.5,1.4-1.6cm.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a planar spiral microstrip antenna for a 3G system mobile terminal. Background technique [0002] With the development of wireless communication systems and the number of users, higher requirements are placed on system communication capacity. For this reason, the third generation mobile communication system has been proposed, in which WCDMA using direct spread spectrum technology provides not only traditional voice services, but also broadband multimedia services such as images and data. The working frequency range of the WCDMA system radio frequency is 1920-2170MHz, the bandwidth reaches 250MHz, and the relative bandwidth reaches 13%. Therefore, the antenna design for WCDMA mobile terminals requires large bandwidth and small size, and provides uniform coverage on the entire azimuth plane. Above 0dBi (Zhu Xiaowei, He Xiaoxiao, Liu Jin, Planar Inverted-F Antenna for 3G System Mobile Termin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q13/00H01Q13/08
Inventor 游佰强董小鹏陈浩
Owner XIAMEN UNIV
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