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Dielectric medium resonant device

A dielectric and resonator technology, applied in the direction of resonators, electrical components, waveguide devices, etc., can solve the problems of performance deterioration, leakage of high-frequency waves, cost rise, etc., and achieve the effect of preventing the reduction of mechanical strength

Inactive Publication Date: 2012-10-17
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the method described in Patent Document 1, the number of devices increases, and there is a further problem of cost increase due to assembly work.
In addition, there are problems that it is difficult to obtain electrical matching, and the characteristics of the dielectric resonator device vary.
For example, when applied to a high-frequency dielectric resonant device, the inductance component of the metal terminal deteriorates impedance matching, and high-frequency waves leak from the metal terminal part, resulting in performance degradation
[0009] On the other hand, in the method described in Patent Document 2, the problem of lowering the mechanical strength has not yet been solved.

Method used

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no. 1 Embodiment approach

[0036] figure 1 It is a schematic exploded perspective view showing the first embodiment of the dielectric resonator device of the present invention, figure 2 It is a schematic partial enlarged plan view of the dielectric resonator device of this embodiment. In this embodiment, the dielectric resonator device is a dielectric filter.

[0037] The dielectric filter of this embodiment has a dielectric block 2 . As the material of the dielectric block 2, for example, a dielectric ceramic can be used, and in particular, a relative permittivity ε can be used. r Forsterite-based ceramics of about 10.

[0038] The dielectric block 2 has a first surface 21 and a second surface 22 that are substantially parallel to each other. The dielectric block 2 further has a third surface 23 and a fourth surface 24 that are substantially perpendicular to the first surface 21 and the second surface 22 and substantially parallel to each other. The dielectric block 2 further has a fifth surface ...

no. 2 Embodiment approach

[0049] image 3 is a schematic perspective view showing a second embodiment of the dielectric resonator device of the present invention, Figure 4 It is a schematic exploded perspective view of the dielectric resonator device of this embodiment. also, Figure 5 yes image 3 A schematic partial cross-sectional view in the direction of arrow A, Figure 6 yes image 3 A schematic cross-sectional view in the direction of arrow A. Figure 5 and Figure 6 Indicates cross-sections of parts that are different from each other.

[0050] This embodiment is the same as the first embodiment except that an electromagnetic shield is provided.

[0051] The electromagnetic shielding case 10 is preferably arranged so as to substantially cover the first surface 21 of the dielectric block 2 . Specifically, the electromagnetic shielding case 10 is arranged so as to cover the open area (area where no conductor is formed) on the first surface 21 of the dielectric block 2 at a distance from t...

no. 3 Embodiment approach

[0055] Figure 7 It is a schematic cross-sectional view showing a third embodiment of the dielectric resonator device of the present invention. Figure 7 Indicates that related to the above-mentioned second embodiment Figure 6 corresponding part.

[0056] This embodiment is the same as the second embodiment except for the mounting method of the electromagnetic shielding cover.

[0057] In the third embodiment, the connection conductor 40 connected to the shield conductor 46 formed in the through long hole 45 is formed on the first surface 21 of the dielectric block 2, and the electromagnetic shield 10 is connected to the shield conductor 46 via the connection conductor 40. connect. Accordingly, even if the width D of the long through hole 45 is small, the electrical connection between the electromagnetic shield case 10 and the shield conductor 46 can be easily realized, which contributes to the miniaturization of the dielectric resonator device.

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Abstract

The invention provides a dielectric medium resonant device. A dielectric medium block (2) is provided with a through elongated hole (45) which extends from a first face (21) to a second face (22) in parallel with a third face (23) and a fourth face (24). The inner surface of the through elongated hole (45) is provided with a shielded conductor (46). A front end part (45a) of the through elongated hole (45) near a fifth face (25) is disposed at a position nearer to the fifth face (25) than any of a plurality of through holes (41). The plurality of through holes (41) are arranged in an area between the through elongated hole (45) of the dielectric medium block (2) and the third face (23), the fourth face (24) and a sixth face (26). Accordingly, even if the number of resonant devices is increased, mechanical strength reduction can be prevented, and the dielectric medium resonant device with high installing efficiency can be provided with low cost.

Description

technical field [0001] The present invention relates to a dielectric resonator device such as a dielectric filter or a dielectric duplexer used in a high frequency band such as a microwave band, which is formed by forming a plurality of resonators in a dielectric block. Background technique [0002] Conventionally, mobile communication devices such as mobile phones are configured to transmit and receive only a desired frequency band through a filter such as a passband filter among signals transmitted and received via an antenna. A dielectric resonator device such as a dielectric filter or a dielectric duplexer as such a functional electronic device is often used as an integrated device that combines a plurality of resonators with a dielectric block. [0003] However, in recent years, high performance has been demanded in mobile communication equipment, especially equipment for base stations, and accordingly, high performance has also been demanded in dielectric resonator dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/10H01P1/20H05K9/00
Inventor 原田信洋中村浩
Owner UBE IND LTD
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