Filtering antenna

A filter antenna and metal layer technology, which is applied in the direction of slot antenna, radiation element structure, circuit, etc., can solve the problems of low out-of-band suppression of filter antenna gain response and few filter antennas, achieve high out-of-band suppression performance, and improve selective effect

Active Publication Date: 2015-05-20
ZHONGTIAN BROADBAND TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, filters and antennas with a variety of transmission line structures have been applied to the design of filter antennas, but there are few filter antenn

Method used

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Embodiment Construction

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0024] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0025] Unless otherw...

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Abstract

The invention provides a filtering antenna, which comprises an upper medium substrate, a connecting mechanism and a lower medium substrate, wherein the upper medium substrate, the connecting mechanism and the lower medium substrate are sequentially overlapped, a plurality of first metallic through holes are formed in the upper medium substrate, a plurality of second metallic through holes are formed in the lower medium substrate, a first metal layer and a second metal layer are respectively arranged at the upper surface and the lower surface of the upper medium substrate, a third metal layer and a fourth metal layer are respectively arranged at the upper surface and the lower surface of the lower medium substrate, a single-mode rectangular resonance cavity is surrounded by the first metal layer, the second metal layer and the first metallic holes, a double-mode rectangular resonance cavity is coupled and cascaded with the single-mode rectangular resonance cavity, and two parallel irradiating gaps are formed in the first metal layer, and are symmetric to the center of a middle point of a projection of the single-mode rectangular resonance cavity on the first metal layer. The filtering antenna has the beneficial effects of high out-of-band inhibition and low crossing polarization.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to a filter antenna with high out-of-band suppression function. Background technique [0002] With the rapid development of wireless communication systems, the size of wireless communication terminals is getting smaller and smaller while their functions are powerful. Therefore, the design of multifunctional components such as balun filters, power dividing filters, filter antennas, etc. has gradually become an inevitable trend. . Integrating the antenna and the filter can effectively reduce the loss of the system, improve the efficiency of the system and reduce the size of the system. The filter antenna is the last resonator that uses the antenna as a radiation unit and can also be regarded as a filter. It is integrated with other resonators to form a conversion between electric power and radio waves. At the same time, the gain of the antenna and the echo of the input The los...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/10
Inventor 褚慧陈建新唐慧周立衡秦伟陆清源包志华
Owner ZHONGTIAN BROADBAND TECH
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