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Broadband coupling filter

A coupling filter and broadband technology, applied in the field of broadband coupling filters, can solve the problems that the operating frequency band is not easy to extend, unfavorable for broadband applications, etc.

Active Publication Date: 2011-09-21
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the filter is composed of passive components (such as resistors, capacitors, inductors), which makes it difficult to extend the operating frequency band, which is not conducive to the application of broadband operation

Method used

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Examples

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Embodiment Construction

[0015] Please refer to Figure 1A to Figure 1D , Figure 1A It is a schematic diagram of a broadband coupling filter 10 according to an embodiment of the present invention, Figure 1B to Figure 1D It is a schematic diagram of each layer of the broadband coupling filter 10 . Broadband coupling filter 10 has quoted the partial structure of the disclosed power divider of No. 098121177 Taiwan patent application, and produces new effect, can be used as the feeding network of intelligent antenna, has very little input loss (insertion loss), and can effectively suppress noise. In detail, the broadband coupling filter 10 includes a substrate 100 , signal terminals P1 , P2 , P3 , P4 , a ground plate GND_PLT, bulk transmission lines TML_B1 , TML_B2 and a connection unit WR. Substrate 100 is a three-layer printed circuit board, and its upper layer (such as Figure 1B shown) printed with signal terminals P1, P2 and block transmission line TML_B1, the middle layer (such as Figure 1C s...

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Abstract

The invention discloses a broadband coupling filter which is used for producing a notch filtering effect. In the broadband coupling filter, a substrate comprises a first layer, a second layer and a third layer; a first signal end, a second signal end and a first blocky transmission line are formed on the first layer; the first signal end is used for receiving a signal; the second signal end is used for outputting a filtering effect of the signal; a grounding board is formed on the second layer and is provided with a hole; a third signal end, a fourth signal end and a second bulk transmission line are formed on the third layer; and a connecting unit is formed in the third layer and used for connecting the third signal end and the fourth signal end.

Description

technical field [0001] The invention relates to a broadband coupling filter, in particular to a broadband coupling filter capable of producing notch filtering effect. Background technique [0002] A filter is a common electronic component that passes signals in a specific frequency band and attenuates signals outside that frequency band. Generally speaking, the filter is composed of passive components (such as resistors, capacitors, and inductors), so that the operating frequency band is not easy to extend, which is not conducive to the application of broadband operation. Contents of the invention [0003] Therefore, the present invention mainly aims to provide a broadband coupling filter. [0004] The invention discloses a broadband coupling filter, comprising a substrate, including a first layer, a second layer and a third layer, the second layer is between the first layer and the third layer; a a first signal terminal formed in the first layer of the substrate; a seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 吴民仲
Owner MEDIATEK INC
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