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Circular polarization frequency express substation small antenna based on capacitive loading parasitic ring

A technology of capacitive loading and frequency agility, which is applied in the field of antennas, can solve the problems of antenna out-of-band interference, high passive loss, and poor stability, and achieve the effects of simple structure, improved stability, and high radiation efficiency

Active Publication Date: 2015-03-04
江苏金玉丰新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in many cases, the out-of-band interference and passive loss of the antenna are high, and the stability is poor

Method used

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  • Circular polarization frequency express substation small antenna based on capacitive loading parasitic ring
  • Circular polarization frequency express substation small antenna based on capacitive loading parasitic ring
  • Circular polarization frequency express substation small antenna based on capacitive loading parasitic ring

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Embodiment Construction

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] The overall three-dimensional structure diagram of the electric small antenna described in the present invention is as follows: figure 1 shown. Views from different perspectives: front view, side view, and top view are as follows figure 2 , image 3 , Figure 4 shown. The main components of the antenna are: two orthogonally placed protractor-shaped dielectric plates 1, 2, a copper disc-shaped ground plate 3, two orthogonally placed capacitively loaded parasitic rings 4, 5, and two monopole radiation metal strips Strips 6 and 7 are connected to the strip feeder 8 placed horizontally at the bottom of the two monopole strips. The strip feeder 8 is connected to the inner conductor of the 50Ω coaxial cable through the inner core 9 of the SMA interface, and the center of the SMA interface inner core and the strip feeder 8 connect.

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Abstract

The invention relates to a circular polarization frequency express substation small antenna based on a capacitive loading parasitic ring. The antenna comprises two monopole radiation metal strips, two orthometric capacitance loading parasitic rings, a variable capacitance diode frequency adjusting unit, a strip-shaped feeder line, a ground plate and two protractor-shaped dielectric-slabs being orthometric to each other; two parasitic rings are respectively located on two protractor-shaped dielectric-slabs being orthometric to each other, the monopole and the parasitic rings are respectively mounted on the front surface and rear surface of the dielectric-slab, the dielectric-slab is vertical to the ground plate; the variable capacitance diode is loaded in the gap between two parasitic rings, each parasitic ring is connected to two inductors, the positive electrode and the negative electrode of the external DC source of the variable capacitance diode are connected to inductors respectively, the strip-shaped feeder line is connected to the bottom end of each monopole radiation metal strip. The antenna uses the inductors for isolating the impact to the DC source driving variable capacitance diode from the alternating current on the parasitic rings, adopts the near field resonant parasitic oscillator technology for naturally isolating DC source and feeder source connected to the antenna and guarantees stability and higher radiant efficiency for the antenna radiation field.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a circularly polarized frequency-agile electric small antenna based on a capacitively loaded parasitic loop. Background technique [0002] With the development of wireless communication technology, people put forward higher requirements for the realization of multi-band and multi-service. The frequency agility of the antenna and the circular polarization of the radiation field can meet the requirements of wireless communication for multi-band and multi-directional communication. Replace several antennas with one antenna to achieve frequency agility in a reconfigurable way, which greatly reduces the size and number of antennas used. But so far, the electrically small antennas that can simultaneously achieve frequency agility in impedance and circularly polarized radiation field have not been reported. [0003] In general, to achieve a circularly polarized field, the antenna must ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50
Inventor 唐明春理查德·齐奥尔科夫斯基郭李
Owner 江苏金玉丰新材料有限公司
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