Planar umbrella-shaped coplanar element antenna with notch reflector
A technology of notch reflection and vibrator antenna, which is applied in the direction of antenna, radiation element structure, electrical components, etc. It can solve the problems of low gain and inapplicability, and achieve the effects of gain suppression, gain improvement, and compact size
Inactive Publication Date: 2015-01-07
SOUTHEAST UNIV
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[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 planar umbrella-shaped coplanar dipole antenna of the notch reflector includes two umbrella-shaped dipole radiation patches 1, the feeding transmission line 2, the dielectric substrate 5 and the notch reflector 6; the umbrella-shaped dipole The radiation 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 , the opening angle is between 120 degrees and 160 degrees, two umbrella-shaped oscillator radiation patches 1 are printed on the same surface of the dielectric substrate 5, and one umbrella-shaped oscillator radiation patch is directly connected to the conduction band 3 of ...
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The invention relates to a planar umbrella-shaped coplanar element antenna with a notch reflector. The planar umbrella-shaped coplanar element antenna with the notch reflector is composed of two umbrella-shaped element radiation patches (1), a feed transmission line (2), a dielectric substrate (5) and the notch reflector (6), wherein the two umbrella-shaped element radiation patches (1) are printed on the same face of the dielectric substrate (5) in an umbrella shape, and each umbrella-shaped element radiation patch is connected with the conduction band (3) and the ground (4) of the feed transmission line at the tail end (10) of the feed transmission line. The notch reflector (6) is composed of two open-ended double-wire transmission lines (7) which are identical in length. The conduction band and the ground of the each double-wire transmission line are connected with the conduction band (3) and the ground (4) of the feed transmission line respectively at a loading point (9) of the notch reflector. The notch reflector loaded by the planar umbrella-shaped coplanar element antenna can be used as a reflector within the working frequency band of the antenna to increase the antenna gain, and meanwhile the notch reflector can be used as a filter within the notch frequency band lower than the working frequency band to restrain radiation of the antenna.
Description
technical field [0001] The invention relates to an antenna, in particular to a planar umbrella-shaped coplanar dipole antenna of a 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...
Claims
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IPC IPC(8): H01Q15/14H01Q1/38
Inventor 赵嘉宁
Owner SOUTHEAST UNIV