CN109041276B - Broadband DC blocking device - Google Patents
Broadband DC blocking device Download PDFInfo
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- CN109041276B CN109041276B CN201810765008.5A CN201810765008A CN109041276B CN 109041276 B CN109041276 B CN 109041276B CN 201810765008 A CN201810765008 A CN 201810765008A CN 109041276 B CN109041276 B CN 109041276B
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Abstract
The invention discloses a broadband direct current blocking device which comprises an input connector, a transmission assembly and an output connector which are connected in sequence, wherein radio-frequency signals and direct current signals are input to the transmission assembly through the input connector, the radio-frequency signals are output through the output connector after the transmission assembly is subjected to direct current blocking treatment, the transmission assembly comprises a first conductor plate, an insulating medium plate and a second conductor plate which are correspondingly arranged from top to bottom in sequence, the input connector is fixedly connected with the first conductor plate, and the output connector is fixedly connected with the second conductor plate. Compared with the prior art, the transmission assembly in the broadband DC blocking device adopts a three-layer structure, and the input connector and the output connector are positioned on different conductor plates, so that the required length is shorter and the size is smaller when a radio-frequency signal with a certain frequency is transmitted.
Description
The present application is a divisional application of an invention patent application having an application number of 201510049738.1, an application date of 2015, 30/01, and an invention name of "broadband dc blocking device".
Technical Field
The invention relates to the technical field of communication, in particular to a broadband direct current blocking device.
Background
In the field of wireless communication, an RF radio frequency signal and a DC direct current signal often exist in a wireless communication base station at the same time, and sometimes the RF radio frequency signal needs to be separated from the DC direct current signal for separate transmission. For this reason, a DC blocking device is proposed, which separates the RF signal from the DC signal by DC blocking. However, when the frequency band of the RF signal is wide, the size of the dc blocking device in the prior art is large, and it is difficult to meet the user's requirement for the size of the dc blocking device in various situations.
Therefore, there is a need for a broadband dc blocking device with a small size to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide a broadband direct current blocking device, which is used for reducing the size of the direct current blocking device and realizing the separation of radio frequency signals in a wider frequency band range.
In order to achieve the above object, the present invention provides a broadband dc blocking device, which includes an input connector, a transmission component and an output connector connected in sequence, wherein a radio frequency signal and a dc signal are input to the transmission component through the input connector, and the transmission component outputs the radio frequency signal through the output connector after dc blocking processing, the broadband dc blocking device is characterized in that the transmission component includes a first conductor plate, an insulating dielectric plate and a second conductor plate correspondingly arranged in sequence from top to bottom, the input connector is fixedly connected to the first conductor plate, the output connector is fixedly connected to the second conductor plate, a boundary range of the insulating dielectric plate is larger than a boundary range of the first conductor plate and the second conductor plate, a connection end of the input connector is fixedly connected to one end of an upper surface of the first conductor plate, the connecting end of the output connector is fixedly connected to one end, far away from the input connector, of the lower surface of the second conductor plate, the first conductor plate and the second conductor plate have the same structure, and the insulating medium plate is an elongated plate.
Compared with the prior art, the broadband direct current blocking device comprises an input connector, a transmission assembly and an output connector which are sequentially connected, wherein the transmission assembly comprises a first conductor plate, an insulating medium plate and a second conductor plate which are sequentially and correspondingly arranged from top to bottom, when a radio-frequency signal and a direct-current signal enter the first conductor plate through the input connector, the radio-frequency signal and the direct-current signal are transmitted in the first conductor plate, the radio-frequency signal is coupled to the second conductor plate through the insulating medium plate, and then the radio-frequency signal is output through the output connector, so that the radio-frequency signal is separated.
Preferably, the transmission assembly further includes two insulating bolts, two first threaded holes are respectively formed in two ends of the first conductor plate, two second threaded holes are formed in corresponding positions of the insulating medium plate, two third threaded holes are formed in corresponding positions of the second conductor plate, and the two insulating bolts sequentially penetrate through the two first threaded holes, the two second threaded holes and the two third threaded holes to fix the first conductor plate, the insulating medium plate and the second conductor plate.
Preferably, the insulating dielectric plate is a teflon plate, the insulating bolt is a teflon bolt, and the thickness of the insulating dielectric plate is 0.13 mm.
Preferably, the first conductor plate and the second conductor plate are silver-plated copper plates.
Preferably, the first conductor plate and the second conductor plate have a thickness of 0.5 mm.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
Fig. 1 is a structural diagram of an embodiment of a broadband dc blocking device according to the present invention.
Fig. 2 is an exploded view of the wide band dc blocking device of fig. 1.
Fig. 3 is a front view of the wide band dc blocking device of fig. 1.
Fig. 4 is a cross-sectional view of the broadband dc blocking device of fig. 3 along the direction a-a.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements.
Referring to fig. 1 to 4, the present invention provides a broadband dc blocking device 100, which includes an input connector 10, a transmission component 12, and an output connector 14 connected in sequence, wherein a radio frequency signal and a dc signal are input to the transmission component 12 through the input connector 10, the transmission component 12 outputs the radio frequency signal through the output connector 14 after dc blocking processing, the transmission component 12 includes a first conductor plate 121, an insulating dielectric plate 123, and a second conductor plate 125 arranged in sequence from top to bottom, the input connector 10 is fixedly connected to the first conductor plate 121, and the output connector 14 is fixedly connected to the second conductor plate 125.
After the rf signal and the dc signal are input to the first conductive plate 121 through the input connector 10, the rf signal and the dc signal are transmitted on the first conductive plate 121, and the rf signal is coupled to the second conductive plate 125 through the insulating dielectric plate 123, and then the rf signal can be output from the output connector 14 connected to the second conductive plate 125, so that the rf signal and the dc signal are separated, i.e., dc blocking is achieved. Compared with the prior art, the transmission assembly 12 of the present invention has a three-layer structure, and the input connector 10 and the output connector 14 are respectively located on the first conductive plate 121 and the second conductive plate 125, so that when transmitting radio frequency signals in a certain frequency range, the length required by the first conductive plate 121 and the second conductive plate 125 is shorter, and thus the size of the broadband dc blocking device 100 is smaller, that is, the first conductive plate 121 and the second conductive plate 125 with the same size, and the frequency band of the radio frequency signals that can be transmitted by the present invention is wider.
In addition, as shown in fig. 2, the transmission assembly 12 further includes two insulating bolts 127a and 127b, two first threaded holes 121a and 121b are respectively opened at two ends of the first conductor plate 121, second threaded holes 123a and 123b are respectively opened at positions on the insulating medium plate 123 corresponding to the first threaded holes 121a and 121b, and third threaded holes 125a and 125b are opened at corresponding positions on the second conductor plate 125, wherein the insulating bolt 127a sequentially passes through the first threaded hole 121a, the second threaded hole 123a, and the third threaded hole 125a, and the insulating bolt 127b sequentially passes through the first threaded hole 121b, the second threaded hole 123b, and the third threaded hole 125b, so as to achieve the fixed connection of the first conductor plate 121, the insulating medium plate 123, and the second conductor plate 125. Further, the first conductor plate 121, the insulating dielectric plate 123, and the second conductor plate 125 are in close contact, that is, the lower surface of the first conductor plate 121 is in contact with the upper surface of the insulating dielectric plate 123, and the lower surface of the insulating dielectric plate 123 is in contact with the upper surface of the second conductor plate 125.
Specifically, the first conductor plate 121 and the second conductor plate 125 have the same structure, and the first conductor plate 121 is disposed in a winding and bending manner, wherein the winding arrangement can make the first conductor plate 121 have a longer length within a certain distance than a straight arrangement, and preferably, the first conductor plate 121 includes a plurality of horizontal sections 1211 and a plurality of vertical sections 1213, and the plurality of horizontal sections 1211 and the vertical sections 1213 are sequentially connected end to form the winding structure shown in fig. 2. Of course, the structure of the first conductive plate 121 is not limited to this, and the first conductive plate 121 may have another meandering structure. Further, the insulating dielectric sheet 123 is an elongated sheet, and the boundary extent of the insulating dielectric sheet 123 is larger than the boundary extent of the first conductor sheet 121 and the second conductor sheet 125, that is, the first conductor sheet 121 and the second conductor sheet 125 are entirely disposed in the region of the insulating dielectric sheet 123.
Preferably, the insulating dielectric plate 123 is a Polytetrafluoroethylene (PTFE) plate, the insulating bolts 127a and 127b are PTFE bolts, and the thickness of the insulating dielectric plate 123 is 0.13 mm, the first conductor plate 121 and the second conductor plate 125 are silver-plated copper plates, and the thickness of the first conductor plate 121 and the second conductor plate 125 is 0.5 mm. Of course, the insulating dielectric plate 123 and the insulating bolts 127a and 127b may be formed of other insulating materials, and the first conductive plate 121 and the second conductive plate 125 may be formed of other conductive materials.
With the above arrangement, when the thickness of the insulating dielectric plate 123 is 0.13 mm, the thickness of the first conductive plate 121 and the second conductive plate 125 is 0.5 mm, and the length of the first conductive plate 121 and the second conductive plate 125 is 30 mm, the wide band dc blocking device 100 can be used for separating a radio frequency signal from a direct current signal in a range of 700MHz to 2.8GHz, and the applicable frequency band range is wide.
The present invention has been described in connection with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, and is intended to cover various modifications, equivalent combinations, which are made in accordance with the spirit of the present invention.
Claims (1)
1. A broadband DC blocking device comprises an input connector, a transmission component and an output connector which are connected in sequence, wherein a radio frequency signal and a DC signal are input into the transmission component through the input connector, the radio frequency signal is output through the output connector after the transmission component is subjected to DC blocking treatment, the broadband DC blocking device is characterized in that the transmission component comprises a first conductor plate, an insulating dielectric plate and a second conductor plate which are correspondingly arranged from top to bottom in sequence, the input connector is fixedly connected with the first conductor plate, the output connector is fixedly connected with the second conductor plate, the boundary range of the insulating dielectric plate is larger than that of the first conductor plate and the second conductor plate, a connecting end of the input connector is fixedly connected with one end of the upper surface of the first conductor plate, and a connecting end of the output connector is fixedly connected with one end of the lower surface of the second conductor plate, which is far away from the input connector, the first conductor plate and the second conductor plate have the same structure, and the insulating dielectric plate is an elongated plate;
the first conductor plate is arranged in a winding and meandering manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765008.5A CN109041276B (en) | 2015-01-30 | 2015-01-30 | Broadband DC blocking device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765008.5A CN109041276B (en) | 2015-01-30 | 2015-01-30 | Broadband DC blocking device |
| CN201510049738.1A CN104619052B (en) | 2015-01-30 | 2015-01-30 | Broadband stopping direct current device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049738.1A Division CN104619052B (en) | 2015-01-30 | 2015-01-30 | Broadband stopping direct current device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109041276A CN109041276A (en) | 2018-12-18 |
| CN109041276B true CN109041276B (en) | 2022-04-29 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049738.1A Active CN104619052B (en) | 2015-01-30 | 2015-01-30 | Broadband stopping direct current device |
| CN201810765008.5A Active CN109041276B (en) | 2015-01-30 | 2015-01-30 | Broadband DC blocking device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510049738.1A Active CN104619052B (en) | 2015-01-30 | 2015-01-30 | Broadband stopping direct current device |
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| Country | Link |
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| CN (2) | CN104619052B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08125415A (en) * | 1994-10-27 | 1996-05-17 | Nec Corp | Variable superconducting delay line |
| JP2003188047A (en) * | 2001-12-14 | 2003-07-04 | Mitsubishi Electric Corp | Dc block circuit and communication device |
| JP2004129053A (en) * | 2002-10-04 | 2004-04-22 | Mitsubishi Electric Corp | Dc blocking circuit and communication equipment |
| CN1933236A (en) * | 2005-09-12 | 2007-03-21 | 电子科技大学 | Microwave stripline block isolating device |
| WO2010050760A2 (en) * | 2008-10-31 | 2010-05-06 | (주)에이스테크놀로지 | Miniaturized dc breaker |
| KR101070633B1 (en) * | 2009-10-15 | 2011-10-07 | 주식회사 에이스테크놀로지 | DC Blocking Device Using Impedance Matching |
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2015
- 2015-01-30 CN CN201510049738.1A patent/CN104619052B/en active Active
- 2015-01-30 CN CN201810765008.5A patent/CN109041276B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104619052B (en) | 2018-07-10 |
| CN109041276A (en) | 2018-12-18 |
| CN104619052A (en) | 2015-05-13 |
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