Broadband dipole antenna with notch reflector
A wide-band dipole and notch reflection technology, which is applied in the direction of antenna, radiation element structure, electrical components, etc., 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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However, its gain is low, so it is not suitable
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[0016] The present invention will be further described below in conjunction with drawings and embodiments.
[0017] The technical scheme adopted in the present invention is: the broadband dipole antenna of the notch reflector includes two vibrator radiation patches 1, feeder transmission line 2, dielectric substrate 5 and notch reflector 6; vibrator radiation patch 1, feeder Both the electric transmission line 2 and the notch reflector 6 are on the dielectric substrate 5; the shape of the two vibrator radiation patches 1 is rectangular, and the two vibrator radiation patches 1 are printed on both sides of the dielectric substrate 5 in an antipodal shape. The conduction band 3 of the feeder transmission line and the ground 4 of the feeder transmission line are connected at the end 10 of the feeder transmission line; the notch reflector 6 consists of two sections of equal length, open-ended left microstrip open line 11 and right microstrip open line 12 The formed microstrip tra...
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The invention relates to a broadband dipole antenna with a notch reflector. The broadband dipole antenna with the notch reflector is composed of two element radiation patches (1), a feed transmission line (2), a dielectric substrate (5) and the notch reflector (6), wherein the two element radiation patches are printed on the two sides of the dielectric substrate (5) in an antipodal shape, and each 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 a left open-ended micro-strip open-circuit line (11) and a right open-ended micro-strip open-circuit line (12), wherein the left micro-strip open-circuit line (11) and the right micro-strip open-circuit line (12) are identical in length. The conduction band and the ground of the left micro-strip open-circuit line are connected with the conduction band (3) and the ground (4) of the feed transmission line respectively at a first loading point (9) of the notch reflector, and the conduction band and the ground of the right micro-strip open-circuit line are connected with the conduction band (3) and the ground (4) of the feed transmission line respectively at a second loading point (13) of the notch reflector. The notch reflector of the broadband dipole antenna can increase the antenna gain within the working frequency band of the antenna, 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 broadband 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 signal in the receive...
Claims
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Login to View More IPC IPC(8): H01Q1/38H01Q15/14H01Q19/10
Inventor 殷晓星赵洪新
Owner SOUTHEAST UNIV