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Umbrella-shaped oscillator antenna with double-frequency notch reflector

A technology of notch reflection and umbrella-shaped vibrator, applied in the direction of antenna, radiating element structure, electrical components, etc., can solve the problems of low gain and inapplicability, and achieve the effect of gain suppression, gain improvement, and compact size

Inactive Publication Date: 2015-01-07
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its gain is low, so it is not suitable for some occasions with high gain requirements

Method used

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  • Umbrella-shaped oscillator antenna with double-frequency notch reflector

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] The technical solution adopted in the present invention is: the umbrella-shaped dipole antenna of the dual-frequency notch reflector includes two umbrella-shaped dipole radiation patches 1, a feed transmission line 2, a dielectric substrate 5 and a notch reflector 6; The patch 1, the feeding transmission line 2 and the notch reflector 6 are all on the dielectric substrate 5; the shape of the two umbrella-shaped oscillator radiation patches 1 is rectangular, and the two umbrella-shaped oscillator radiation patches 1 are opened in an umbrella shape, Its opening angle is between 120 degrees and 160 degrees, and two umbrella-shaped oscillator radiation patches 1 are printed on both sides of the dielectric substrate 5 in antipodal shape, and are respectively connected to the conduction band 3 of the feed transmission line and the ground 4 of the feed transmission line...

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Abstract

The invention relates to an umbrella-shaped oscillator antenna with a double-frequency notch reflector. The antenna is composed of umbrella-shaped oscillator radiation patches (1), a feed transmission line (2), a dielectric substrate (5) and the notch reflector (6). The two umbrella-shaped oscillator radiation patches (1) are printed on the two faces of the dielectric substrate (5) in an umbrella-shaped antipodal shape and are connected with a conduction band (3) and a ground part (4) of the feed transmission line at a transmission line tail end (10). The notch reflector (6) is formed by a left micro-strip open-circuit line (11) and a right micro-strip open-circuit line (12) of a terminal open circuit, the left micro-strip open-circuit line (11) and the right micro-strip open-circuit line (12) are different in length, and conduction bands and ground parts of the left micro-strip open-circuit line (11) and the right micro-strip open-circuit line (12) are connected with the conduction band (3) and the ground part (4) of the feed transmission line respectively at a loading point (9) of the notch reflector. The notch reflector loaded on the antenna can serve as the reflector in the working frequency band of the antenna to improve the gain of the antenna and meanwhile can serve as a filter in the two notch frequency bands lower than the working frequency band to suppress the radiation of the antenna.

Description

technical field [0001] The invention relates to an antenna, in particular to an umbrella dipole antenna with a dual-frequency notch reflector, and belongs to the technical field of antenna manufacturing. Background technique [0002] As an important front-end device in a wireless communication system, the antenna can not only radiate or receive useful radio frequency signals, but also radiate or receive indiscriminately for other useless or harmful signals falling within its working frequency band. In some cases, this situation will cause greater interference to the antenna transceiver system, such as image frequency signal interference in a superheterodyne receiver. Due to its high sensitivity and selectivity, the superheterodyne structure is widely used in modern communication systems and radar systems, so image frequency suppression measures are essential. A common solution is to insert an image filter in the radio frequency circuit to filter out the image frequency sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q15/14H01Q19/10
Inventor 殷晓星赵洪新
Owner SOUTHEAST UNIV