Dielectric filter with multi-layer resonator
A resonator and filter technology, applied in waveguides, circuits, electrical components, etc., can solve the problems of poor consistency, low yield, unsuitable dielectric filters, etc., to achieve improved accuracy, enhanced rejection performance, excellent selective effect
Active Publication Date: 2022-02-22
CYNTEC
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Problems solved by technology
This type of known resonator has considerable size and weight, and is not suitable for use in telecommunication systems such as 5G that use Massive MIMO architectures and require individual filters for each antenna unit
[0005]
In addition, known dielectric filters are usually manufactured by drilling and filling processes, which are not easy to mass-customize.
In the known process, actions such as mechanical drilling are required to form a resonant cavity, which inherently has low yield and poor consistency
Also, because the accuracy of hole filling, plating, and drilling is not easy to control, after multiple drilling, hole filling, and plating processes, secondary processing such as manual adjustment and calibration is still required to complete the production.
These disadvantages make known dielectric filters unsuitable for 5G applications
Method used
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[0047] Hereinafter the invention will be described in detail with reference to the accompanying drawings which form a part hereof and show by way of drawings and specific embodiments according to which the invention can be practiced. These examples are described in sufficient detail to enable one of ordinary skill in the art to practice the invention. For the sake of brevity and convenience, the scale and proportion of certain parts in the illustrations may be deliberately reduced or expressed in an exaggerated manner. Other embodiments may be utilized or changes may be made in structural, logical or electrical aspects without departing from the scope of the present invention. Accordingly, the following detailed description should not be viewed in a limiting manner, but the scope of the invention will be defined by the appended claims.
[0048] When used in various embodiments of the present disclosure, "comprises", "may include" and other synonyms indicate the existence of c...
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The invention discloses a dielectric filter with a multi-layer resonator. A dielectric filter having multilayer resonators includes a dielectric block in which at least one multilayer resonator is formed, where each of the multilayer resonators is columnar and extends in the dielectric block in a first direction, and is composed of a plurality of parallel metal layers overlapping in a second direction. A plurality of via members extend in the second direction and are connected to metal layers in the multi-layer resonators, and a ground electrode is connected to a ground terminal of each of the multi-layer resonators.
Description
technical field [0001] The present invention relates to a dielectric filter, and more particularly to a dielectric filter having multilayer resonators consisting of a plurality of metal layers extending in a dielectric block constituted. Background technique [0002] Filters are known as devices for attenuating signals whose frequencies lie outside a specific frequency band without attenuating signals in the desired frequency band, and are also known to be used to form one or more resonances in a ceramic material. device to make. Ceramic filters can be designed as filter types such as lowpass, bandpass, or highpass. [0003] A dielectric filter generally uses a quarter-wavelength type resonator designed as a combline, with one end electrically open and the other end grounded. This design achieves a compact, slender and low-profile dimensional structure. Furthermore, it can also generate transmission zero points between the resonator pairs, and it can be simply manufactur...
Claims
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IPC IPC(8): H01P1/20
CPCH01P1/20H01P1/2002H01P1/2056H01P1/20345H01P3/16H01P1/2053
Inventor 周圣儒柳镇忠
Owner CYNTEC