Microstrip slot coupling fed triple-frequency dielectric resonant antenna

A dielectric resonant antenna, coupled feed technology, applied in resonant antennas, slot antennas, antennas, etc., can solve the problem of large volume of dielectric resonant antennas, and achieve the effects of small dielectric loss, wide range of action, and high radiation efficiency.

Inactive Publication Date: 2011-07-20
ZHEJIANG UNIV
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Such a structure makes the volume of

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  • Microstrip slot coupling fed triple-frequency dielectric resonant antenna
  • Microstrip slot coupling fed triple-frequency dielectric resonant antenna
  • Microstrip slot coupling fed triple-frequency dielectric resonant antenna

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[0030] Any structure that can limit the electromagnetic energy to oscillate within a certain volume can constitute an electromagnetic resonator. Such an oscillating structure is generally a volume defined by an electric wall or a magnetic wall of any shape, and microwave electromagnetic oscillation is generated inside the structure under external excitation. Dielectric resonator is a kind of microwave resonant element with storage energy and frequency selection characteristics. The working principle is similar to the lumped element resonator in circuit theory.

[0031] It can be concluded from the reflection and refraction of the interface between the high-permittivity medium and the air that the interface with the high-permittivity has similar characteristics to the conductor wall, which can cause the electromagnetic wave to be completely or almost completely reflected. The conductor wall is called an electric wall. The tangential component of the electric field is zero, and the...

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Abstract

The invention discloses a microstrip slot coupling fed three-frequency dielectric resonant antenna. A dielectric resonant cavity is made of a high-dielectric-constant material and is formed on a dielectric floor; an air resonant cavity is embedded on the upper part in the center of the inside of the dielectric resonant cavity and is filled with air serving as a dielectric; metal patches are placed in the centers at the upper ends of the dielectric resonant cavity and the air resonant cavity; a microstrip coupling slot feed source comprises a slot and a microstrip; the slot is formed in the dielectric floor; and the lower surface of the dielectric floor is provided with the microstrip and is vertically crossed with the slot. In the invention, three structures, namely the dielectric resonant cavity, the air resonant cavity and the metal patches, are integrated together to provide three different frequency points, so that the antenna has the characteristics of small size and wide frequency band, can be excellently applied to an antenna array and other aspects, namely various communication equipment and systems such as mobile terminals, wireless access points, base stations and the like, and can also be widely applied to some national defense tactical systems such as radars and the like.

Description

technical field [0001] The invention relates to a dielectric resonant antenna, in particular to a three-frequency dielectric resonant antenna with microstrip slot coupling feeding. Background technique [0002] With the development of science and technology, the wireless communication industry has also been greatly popularized. Therefore, people's requirements for the performance of antennas that are indispensable in wireless communication systems are also increasing, such as smaller size, larger bandwidth, and lower loss. Wait. However, the application and development of antennas are limited by two key technologies, the high metal ohmic loss in the high frequency band and the large geometric size of the antenna in the low frequency band. Therefore, the dielectric resonant antenna has been widely concerned and researched due to its good performance. [0003] Dielectric resonators are made of dielectric materials with high dielectric constant and low loss, and are often use...

Claims

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Application Information

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IPC IPC(8): H01Q5/00H01Q9/04H01Q13/18H01Q5/10
Inventor 吴锡东吴慧娴杨楠周金芳李波
Owner ZHEJIANG UNIV
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