Tri-Band High Gain Omnidirectional Dipole Antenna

Abstract

The invention provides a three-frequency-band high-gain omnidirectional dipole antenna comprising a three-frequency oscillator array, balanced feeder lines, a first dielectric plate, a second dielectric plate, and a third dielectric plate. The first dielectric plate, the second dielectric plate, and the third dielectric plate are arranged successively from top to bottom. The balanced feeder lines are arranged at the top surface and the bottom surface of the second dielectric plate and are printed along the axis direction of a three-frequency oscillator unit. The balanced feeder lines are parallel dual-line transmission lines. The three-frequency oscillator units in the three-frequency oscillator array are printed at the first dielectric plate and the third dielectric plate; and feeding points among all three-frequency oscillator units are connected by the balanced feeder lines. The three-frequency oscillator units consist of upper arms and lower arms, wherein the upper arms and the lower arms are arranged in a mirror symmetry mode. The upper arms and the lower arms include first branches, second branches, and third branches, wherein the first, second, and third branches are arranged along parallel axes; the second branches and the third branches are arranged at the two sides of the first branches symmetrically and the bottoms are connected into one by horizontal branches; and balanced feeding points are formed at central protrusions of the upper arm and the lower arm. The three-frequency-band high-gain omnidirectional dipole antenna has advantages of high gain, omnidirectivity, high efficiency, small size, and low cost; and an effective or benefical reference is provided for an optimized design of other multi-frequency or broadband high-gain omnidirectional array antennas.

Description

【Technical field】 [0001] The invention relates to a mobile communication terminal / base station antenna device and technology, in particular to a three-band high-gain omnidirectional dipole antenna and its technology. 【Background technique】 [0002] At present, the mobile cellular network has basically achieved wide-area continuous coverage of wireless signals, and the number of base stations is increasing, and the density is also increasing. With the improvement of wireless networks, more and more terminal access devices are required. Since the position and orientation of the terminal equipment relative to the base station transmitter are arbitrary, an omnidirectional antenna can generally be used to ensure a good communication effect. This requires that the radiation pattern must have ideal uniformity in the horizontal plane, that is, good out-of-roundness. Secondly, the terminal antenna must have a higher gain (G≥3dBi) in order to obtain a higher signal-to-noise ratio an...

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Problems solved by technology

This makes the traditional method of widening the bandwidth by increasing the width of the vibrator unfeasible, and deep innovation must be carried out to meet the above requirements

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