Reconfigurable Microstrip Yagi Antenna
A technology of Yagi antenna and microstrip, which is applied in the field of reconfigurable microstrip Yagi antenna, can solve the problems of less pattern, lack of effect of pattern scanning, limited scanning of pattern of reconfigurable antenna, etc. Small, enhanced beam deflection, wide variety of effects
Inactive Publication Date: 2017-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
However, the pattern scan of this reconfigurable antenna is limited to the horizontal plane
[0006] In addition, the existing directional pattern reconfigurable antennas can achieve fewer directional patterns, which are far from achieving the effect of pattern scanning
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[0023] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] The reconfigurable microstrip Yagi antenna of the present application includes a dielectric substrate 1, a ground plate and a radiation patch group, the ground plate is located on the lower surface of the dielectric substrate 1, the ground plate is used to contact the feeding probe, and the radiation patch The group is located on the upper surface of the dielectric substrate 1; wherein, the radiation patch group includes a circular patch 2 and four quasi-semicircular patches 3 with the same shape, and the circular patch 2 is located on the dielectric substrate 1 At the center of the surface, four quasi-semicircular patches 3 are symmetrically arranged on the front, back, left, and right of the circular patch 2, and the gaps of the four quasi-semicircular patches 3 all face the circular patch 2. The circular patch 2 has at least one f...
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The invention provides a reconfigurable microstrip Yagi antenna, comprising a dielectric substrate, a ground plate and a radiation patch group, the ground plate is used to contact the feeding probe, and the radiation patch group is located on the upper surface of the dielectric substrate; wherein , the radiation patch group includes a circular patch and four quasi-semicircular patches of the same shape, the circular patch is located at the center of the upper surface, and the four quasi-semicircular patches are symmetrically arranged on the circular The front, back, left, and right of the patch, and the gaps of the four semicircular patches are all facing the circular patch. The circular patch has at least one feed port, and the circular patch is used as the excitation patch. A quasi-semicircular patch is used as a parasitic patch; a rectangular slot is opened at the same position on each of the four parasitic patches, and a switch is set at both ends of each rectangular slot. The on-off of the switch cuts the current on the surface of the parasitic patch, so as to obtain different direction diagrams. It is suitable for popularization and application in the field of antenna technology.
Description
technical field [0001] The invention relates to the technical field of antennas, in particular to a reconfigurable microstrip Yagi antenna. Background technique [0002] Reconfiguring the antenna is to change the antenna structure by loading a switch on the antenna, which can change the current distribution on the antenna surface, thereby realizing the change of the antenna characteristics, such as operating frequency, radiation pattern, polarization mode, etc. According to the antenna's reconfigurable characteristics, reconfigurable antennas are divided into the following four types: frequency reconfigurable antennas, pattern reconfigurable antennas, polarization reconfigurable antennas, and multi-parameter reconfigurable antennas. Reconfigurable antennas can be used in many fields such as high-frequency satellite communication systems, mobile communication systems, electronic intelligence, radar, and ground moving target identification (GMTI). [0003] Usually, the method...
Claims
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IPC IPC(8): H01Q13/08H01Q1/38H01Q19/30H01Q1/36H01Q13/10H01Q1/50
CPCH01Q21/205H01Q9/30H01Q3/242H01Q19/30
Inventor 肖绍球马国明朱伟王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA