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Resonator parallel coupling filter and communication device

A technology for coupling filters and resonators, which can be applied to waveguides, waveguide-type devices, circuits, etc., and can solve the problems of large-scale resonators.

Active Publication Date: 2021-05-14
MURATA MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the case of configuring a resonator parallel coupling filter using 1 / 2 wavelength resonators, the resonators need to use a length dimension of 1 / 2 wavelength of the frequency band
Therefore, there is a problem of increasing the size of the resonator

Method used

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  • Resonator parallel coupling filter and communication device
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  • Resonator parallel coupling filter and communication device

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Embodiment Construction

[0020] Hereinafter, a resonator parallel coupled filter and a communication device according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0021] Figure 1 to Figure 5 A resonator parallel coupled filter 1 according to a first embodiment of the present invention is shown. The resonator parallel coupling filter 1 includes a dielectric substrate 2 , ground conductors 7 and 8 , resonators 9 and 12 , and input and output lines 15 and 17 .

[0022] The dielectric substrate 2 is formed in a flat plate shape extending parallel to, for example, the X-axis direction and the Y-axis direction among mutually orthogonal X-axis directions, Y-axis directions, and Z-axis directions. The dielectric substrate 2 is formed of, for example, a low-temperature co-fired ceramic multilayer substrate (LTCC multilayer substrate). The dielectric substrate 2 has four insulating layers 3 to 6 stacked in the Z-axis direction from the first surface ...

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Abstract

A first end (10A) of a linear conductor (10) of a resonator (9) is connected through a via (11) to a ground conductor (7) on a first surface (2A) of a dielectric substrate (2). The second end (10B) of the linear conductor (10) of the resonator (9) is open. A first end (13A) of a linear conductor (13) of a resonator (12) is connected through a via (14) to a ground conductor (8) on a second surface (2B) of the dielectric substrate (2). The second end (13B) of the linear conductor (13) of the resonator (12) is open. An input / output line (15) is connected through a via (16) to the ground conductor (8) on the second surface (2B) of the dielectric substrate (2). An input / output line (17) is opposite of the second ends (10B, 13B) of the linear conductors (10, 13) of the two resonators (9, 12).

Description

technical field [0001] The present disclosure relates to a resonator parallel coupling filter and a communication device suitable for high-frequency electromagnetic waves (high-frequency signals) such as microwaves and millimeter waves, for example. Background technique [0002] There is known a resonator parallel coupling filter in which a plurality of resonators composed of linear conductors are coupled in parallel (Patent Document 1). When the resonator used in the resonator parallel coupling filter is, for example, a TEM resonator such as a strip resonator, a microstrip resonator, etc., it basically resonates at 1 / 2 wavelength with both ends short-circuited or both ends open-circuited. Device composition. [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2006-14068. [0004] However, in the case of configuring a resonator parallel coupling filter using 1 / 2 wavelength resonators, the resonators need to have a length dimension of 1 / 2 wavelength of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P1/213
CPCH01P1/20345H01P1/20H01P3/08
Inventor 平塚敏朗田口义规
Owner MURATA MFG CO LTD
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