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Hybrid different-wavelength resonant band-pass filter with capacitively coupled metal pattern

A technology of band-pass filter and metal pattern, which is applied in the filter field, can solve the problem of insufficient out-of-band suppression ability, and achieve the effects of good suppression effect, improved suppression effect, and large attenuation slope

Pending Publication Date: 2020-11-13
XIAMEN SUNYEAR ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some specific occasions, the out-of-band suppression capability of the prior art 1 at low frequencies is still insufficient

Method used

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  • Hybrid different-wavelength resonant band-pass filter with capacitively coupled metal pattern
  • Hybrid different-wavelength resonant band-pass filter with capacitively coupled metal pattern
  • Hybrid different-wavelength resonant band-pass filter with capacitively coupled metal pattern

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other i...

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Abstract

The invention discloses a hybrid different-wavelength resonant band-pass filter with a capacitively coupled metal pattern. The filter comprises a ceramic substrate, wherein the ceramic substrate comprises a first surface and a second surface opposite to the first surface. A first resonant cavity, a second resonant cavity, a third resonant cavity, a fourth resonant cavity, a fifth resonant cavity,a sixth resonant cavity, a seventh resonant cavity, an eighth resonant cavity and a ninth resonant cavity which are sequentially distributed in the length direction of the ceramic base body are formedbetween the first surface and the second surface. The first surface is provided with a metal pattern, and is characterized in that the metal pattern comprises a first pattern area surrounding the third resonant cavity and a second pattern area surrounding the fourth resonant cavity. A first gap is formed between the first pattern region and the second pattern region, so that the first pattern region and the second pattern region form capacitive coupling under the separation of the first gap.

Description

technical field [0001] The invention relates to the field of filters, in particular to a mixed different-wavelength resonant band-pass filter with capacitively coupled metal patterns. Background technique [0002] Ceramic filters are divided into band-stop filters (also known as notch filters) and band-pass filters (also known as filters) according to their amplitude-frequency characteristics. They are mainly used in frequency selection networks, intermediate frequency tuning, frequency discrimination and filtering circuits to achieve The purpose of separating different frequency currents has the characteristics of high Q value, good amplitude-frequency and phase-frequency characteristics, small size, and high signal-to-noise ratio. But a band-pass filter is a filter that only allows signals in a specified frequency band to pass through, and signals of other frequencies are suppressed; a band-stop filter is a filter that suppresses signals of a specific frequency band, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/212H01P1/208
CPCH01P1/212H01P1/208H01P1/2056H01P1/2053
Inventor 王俊元
Owner XIAMEN SUNYEAR ELECTRONICS CO LTD