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Small-sized flat trapezoidal-arm ultra-wideband antenna

An ultra-wideband antenna, small-sized technology, applied to the antenna grounding device, the structural form of the radiation element, etc., can solve the problem of radiation gain narrow-band antenna decline, and achieve high antenna gain, increased antenna gain, and strong anti-attenuation ability.

Inactive Publication Date: 2013-05-01
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An ultra-wideband antenna with good performance is the key to realizing the above advantages. The significant difference between an ultra-wideband antenna and a conventional narrowband antenna is that the bandwidth of an ultra-wideband antenna is around a few GHz, and some even reach tens of GHz, while the bandwidth of a conventional narrowband antenna is only about Hundreds of MHz or less, ultra-wideband antennas have a very wide spectrum range, but the radiation gain is significantly lower than that of narrowband antennas

Method used

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  • Small-sized flat trapezoidal-arm ultra-wideband antenna
  • Small-sized flat trapezoidal-arm ultra-wideband antenna
  • Small-sized flat trapezoidal-arm ultra-wideband antenna

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Embodiment Construction

[0011] The present invention will be described below with reference to the accompanying drawings and embodiments.

[0012] In the present invention, a rectangular slot is formed on the antenna facing away from the metal ground pole, and the distance between the frame of the rectangular slot and the radiation unit is adjusted to realize the fine adjustment of the impedance bandwidth of the antenna. The antenna pole adopts a three-arm asymmetric structure, and the antenna structure is as follows: figure 1 and figure 2 shown. The slotted ground pole increases the effective electrical size of the antenna. After the metal ground pole is opened with a rectangular slot 6, a ring metal ground pole 7 is formed. The ground pole current is changed from the original circulating current in the metal film to the circulating current mode along the metal film frame. The annular flow of the antenna increases the electrical size of the antenna, and this method can effectively increase the ant...

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Abstract

The invention belongs to the technical field of small-sized antennas and relates to a small-sized flat trapezoidal-arm ultra-wideband antenna. The antenna comprises a slotted ground electrode which is located at the back of the antenna; an antenna radiation pole, a feeder line and a resonance sheet are arranged on the front face of the antenna; the antenna radiation pole comprises three arms, namely a left arm, a right arm and a right upper arm, wherein the left arm is of a trapezoidal structure, and trapezoid angles are 45 degrees; and the resonance sheet is located between the left arm and the feeder line, and the right arm is vertical to the upper arm and is located at the right side of the feeder line. The antenna provided by the invention has the advantages of smaller size, wider frequency band and higher unidirectional gain.

Description

Technical field [0001] The invention belongs to the technical field of small antennas, and relates to an ultra-wideband antenna. Background technique [0002] The continuous progress of UWB technology has created a new situation in the field of information science. Higher data transmission speed, stronger security performance, and greatly expanded application range are the incomparable advantages of UWB technology. Ultra-wideband antennas with good performance are the key to achieving the above advantages. The significant difference between ultra-wideband antennas and conventional narrowband antennas is that the bandwidths of ultra-wideband antennas are all around several GHz, and some are even as high as tens of GHz, while the bandwidth of conventional narrowband antennas is only about Hundreds of MHz or less, ultra-wideband antennas have an extremely wide spectral range, but the radiation gain is significantly lower than that of narrowband antennas. In practical applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/48H01Q1/36
Inventor 肖夏王梁
Owner TIANJIN UNIV
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