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Wide band air feedback unit for mobile communication base station antenna

A mobile communication base station and antenna technology, which is applied to antennas, resonant antennas, electrical components, etc., can solve the problems of difficult to achieve broadband, high cost, complex structure, etc., to reduce passive third-order intermodulation, low cost, wideband Good electrical performance

Inactive Publication Date: 2007-10-10
西安新海天通信有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a broadband antenna feeder unit for mobile communication base station antennas with simple structure, low cost, good electrical performance, and adjustable feed impedance, which overcomes the need for symmetrical vibrators and coaxial feeders used in existing base station antennas. The problems of complex structure, high cost and difficulty in realizing broadband

Method used

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  • Wide band air feedback unit for mobile communication base station antenna
  • Wide band air feedback unit for mobile communication base station antenna
  • Wide band air feedback unit for mobile communication base station antenna

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Embodiment Construction

[0023] Referring to Fig. 2, the present invention uses the coaxial line to feed the symmetrical vibrator structure, which is to use the symmetrical vibrator for the radiation function, the balun used to restrain the asymmetrical transmission line sheath current, and the strip-shaped vibrator used to feed the symmetrical vibrator. The transmission line, with three functions in one, is synthesized into a basic antenna feeder unit according to the symmetrical structure. The antenna feed unit includes: a symmetrical oscillator 14 , a coaxial line 22 and a grounding plate 26 , wherein the symmetrical oscillator 14 is composed of a left radiating arm 15 , a right radiating arm 16 , a left supporting plate 17 , and a right supporting plate 18 . A metal conduction strip 19 is provided between the left support plate 17 and the right support plate 18. These two support plates are vertically connected to the ground plate 26. The radial arms 15, 16 of the vibrator are geometrically structu...

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Abstract

Following three functions are integrated to synthesize a basic antenna feeder line unit: balanced dipole of possessing radiation function; Balun capable of restricting skin current of asymmetric transmission line (TL); strip TL for feeding power to dipole. The unit includes left / right radiation arms, left / right support plates, and feeding metal conduction band positioned between support plates. Connecting to any one arm, the metal conduction band accomplishes feeding power. The unit is connected to main TL under ground plate. It is symmetrical geometry arrangement related to symmetrical vibrator center so as to realize perfect current balance on two arms, and reach broadband performance of impedance and directional diagram. Features are: low cost; within 23.7% relative bandwidth, VSWR smaller than or equal to 1.4, G about 9dBi; broadband base station antenna produced from two kinds of size can cover CDMA / GSM, all 3G international standard in 806-960MHz and 1710-2170MHz.

Description

technical field [0001] The invention relates to antenna technology, in particular to a broadband and low-cost basic antenna feeder unit for mobile communication base station antennas. Background technique [0002] With the rapid development of mobile communication technology, higher requirements are placed on the performance and bandwidth of base station antennas, an important part of mobile communication equipment. Especially with the advent of 3G, the market not only needs antennas in the 3G frequency band, but also needs Antennas for 2G and 2.5G frequency bands. In my country and many surrounding countries, 3G, 2G, and 2.5G frequency bands may coexist for a long time in the future. In order to reduce costs, 3G, 2G and 2.5G base station antennas must be co-located, which puts higher requirements on the broadband of the antenna, making it suitable for both CDMA and GSM, covering 806-960MHz and 1710-2180MHz, namely 806-896, 820-896, 870-960MHz and 1...

Claims

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Application Information

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IPC IPC(8): H01Q13/08H01Q9/04
Inventor 肖良勇俱新德张建民刘军州雷敏张培团赵玉军
Owner 西安新海天通信有限公司
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