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Resonator and cavity filter

A resonator and cavity technology, applied in the field of resonators and cavity filters, can solve problems such as the limitation of the power capacity of cavity filters, and achieve the advantages of reducing the maximum field strength, increasing the equivalent capacitance, and increasing the power capacity of the cavity. Effect

Inactive Publication Date: 2016-04-20
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through the above-mentioned resonator, the tuning screw 13 is used to realize the adjustment of the frequency, but the power capacity of the cavity filter still becomes the limitation of the application of the cavity filter

Method used

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Embodiment Construction

[0036] In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0037] Figure 2a It is a structural block diagram of a resonator of the present invention; Figure 2b It is a top view of a resonator of the present invention; combined with Figure 2a and Figure 2b As shown, including: the upper end is provided with a loading part 1, the middle is provided with a through hole 2, and the lower end is provided with a fixing hole 3;

[0038] The loading part 1 is composed of several curved geometric structures;

[0039] The geometric center of the loading part 1 is hollowed out, and the hollowed out radius is the same as that of the through hole 2 .

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Abstract

The application discloses a resonator and a cavity filter. The resonator is characterized in that an upper end is provided with a loading portion 1, a central portion is provided with a through hole 2, and a lower end is provided with a fixing hole 3; the loading portion 1 consists of a plurality of curved geometric structures; and the geometric center position of the loading portion 1 is hollowed, with the hollowed radius being the same as the radius of the through hole 2. By arranging the resonator that includes the loading portion 1 of the curved geometric structures and is provided with the through hole 2 and the fixing hole 3 to the cavity filter through the fixing hole 3, the invention increases the equivalent capacitance between the resonator and a cavity, reduces the cavity resonance frequency and the maximum field strength of a link, increases the cavity stored energy of the cavity filter, and achieves the purpose of increasing the cavity power capacity.

Description

technical field [0001] The application relates to filter technology, especially to a resonator and a cavity filter. Background technique [0002] Resonators are the main building blocks of filters. In cavity filters suitable for communication base stations, the conventional forms of resonators are coaxial cavity resonators and hat resonators. [0003] Coaxial cavity resonators use conductive materials, and the length is usually 1 / 4 of the resonance frequency wavelength. This type of resonator has a large size, resulting in a larger filter size. In order to reduce the volume of the cavity filter, the resonator is usually made into a flanging form, that is, a hat-shaped resonator. A hat resonator is a circular disk added to the open section of a coaxial cavity resonator. The role of the plate is to increase the equivalent capacitance between the cavity and the cavity, thereby reducing the resonance frequency and achieving the purpose of reducing the size at the same frequen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/207H01P7/00
CPCH01P1/207H01P1/212
Inventor 赵丽娟周虹沈楠穆学禄吴建军白文德
Owner ZTE CORP
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