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Multi-frequency wide-beam circular polarization antenna

A circularly polarized antenna, multi-bandwidth technology, applied in antennas, antenna arrays, independent antenna unit combinations, etc., can solve the problems of large frequency changes in the shape of the pattern, no inclusions, high antenna height, etc., to achieve small size, high frequency The effect of high bandwidth and gain

Inactive Publication Date: 2013-09-04
SUZHOU KAJINASI COMM SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the height of the antenna is relatively high, and the shape of the pattern varies greatly with frequency, and it does not include the BDS-2 S-band

Method used

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  • Multi-frequency wide-beam circular polarization antenna
  • Multi-frequency wide-beam circular polarization antenna
  • Multi-frequency wide-beam circular polarization antenna

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Embodiment 1

[0017] Such as figure 1 As shown, the multi-bandwidth beam circularly polarized antenna of this embodiment is composed of a high-frequency circularly polarized antenna, a low-frequency circularly polarized antenna, a feeder network, etc., which are coaxially stacked from top to bottom.

[0018] The low frequency band adopts the form of four PIFA antennas, which are evenly arranged on a circle, and pass through the Wilkinson centimeter 101 divided by four (see Figure 2a ) Feed the four PIFA antennas with (1∠0°, 1∠90°, 1∠180°, 1∠270°) to realize a circularly polarized antenna in the low frequency band.

[0019] The high frequency band adopts the form of four inverted L-shaped dipole antennas 3, which are evenly arranged on a circle, and pass through a four-quarter Wilkinson centimeter 106 (see Figure 2b ) Feed the four inverted L-shaped dipole antennas with (1∠0°, 1∠90°, 1∠180°, 1∠270°) to realize a high-frequency circularly polarized antenna.

[0020] In this embodiment, the short-c...

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Abstract

The invention discloses a multi-frequency wide-beam circular polarization antenna, which comprises a high-frequency band circular polarization antenna, a low-frequency band circular polarization antenna, an intermediate medium plate and a feed network which are coaxially overlaid sequentially from top to bottom , wherein the high-frequency band circular polarization antenna adopts a structure that a plurality of reversed L-shaped array antennae are uniformly arranged on the intermediate medium plate along a circumference; the low-frequency band circular polarization antenna adopts a structure that a plurality of PIFAs (Planar Inverted F Antennae) are uniformly arranged on the intermediate medium plate along the circumference; and the feed network is composed of two medium plates which are soldered together, and Wilkinson power dividers used for giving feed to the reversed L-shaped array antennae and the PIFAs are respectively printed on the medium plates. By utilizing the circular polarization principles of the PIFAs and the array antennae, the multi-frequency wide-beam circular polarization antenna which can work in the frequency of 1.1-1.7 GHz (low-frequency band) and 2.2-2.8 GHz (high-frequency band) is designed, the directional pattern of the antenna has a wide-beam characteristic, the out-of-roundness feature of the pattern is good through a coaxial overlaying design, and the upper half space can be covered well.

Description

[0001] technical field [0002] The invention relates to the technical field of antennas, in particular to a multi-mode and multi-frequency circularly polarized receiving antenna, which can be used for satellite navigation and positioning such as GPS, GLONASS, and Beidou II. Background technique [0003] The satellite navigation system can continuously provide high-precision three-dimensional position, speed and precise time information for all kinds of military and civilian carriers on land, sea, air and space around the world, 24 hours a day. It is also playing an increasingly important role in the military and civilian fields. The high-precision, all-day and all-weather navigation, positioning and timing information sent by the global satellite navigation and positioning system is an information resource that can be shared by all sea, land, air and space military and civilian users. Who owns this technology and ability, to take the initiative in military, diplomatic and ...

Claims

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Application Information

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IPC IPC(8): H01Q1/50H01Q21/00H01Q21/30H01Q1/38
Inventor 徐云学
Owner SUZHOU KAJINASI COMM SCI & TECH
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