CN102569958A - Waveguide filter with built-in isolators - Google Patents
Waveguide filter with built-in isolators Download PDFInfo
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- CN102569958A CN102569958A CN2012100377583A CN201210037758A CN102569958A CN 102569958 A CN102569958 A CN 102569958A CN 2012100377583 A CN2012100377583 A CN 2012100377583A CN 201210037758 A CN201210037758 A CN 201210037758A CN 102569958 A CN102569958 A CN 102569958A
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Abstract
The invention discloses a waveguide filter with built-in isolators. The waveguide filter comprises a cover plate and a cavity, wherein the cover plate and the cavity are buckled together. The waveguide filter is characterized in that: a plurality isolators are arranged in the cover plate and the cavity; each isolator comprises a first isolator magnetic field cavity and a second isolator magnetic field cavity which are symmetrically arranged on the upper surface of the cover plate and the lower surface of cavity and are used for placing permanent magnets; a first metal matching block and a second metal matching block are arranged between two isolator magnetic field cavities; and a ferrite is placed between the two metal matching blocks. The isolators are integrated in the waveguide filter, so that the isolation degree of the waveguide filter is improved, and the performance of the waveguide filter is high; and the thicknesses of the cover plate and the cavity are increased, and the thickness difference is not more than 10 percent of the thickness of the cavity, so that the hidden trouble of temperature distortion of devices is avoided, and the reliability and the stability of the devices are improved.
Description
Technical field
The present invention relates to the technical field of filtering of digital microwave and other microwaves, be specifically related to a kind of waveguide filter that is used for the built-in isolator of digital microwave and other microwaves.
Background technology
Traditional waveguide filter that is used for digital microwave and other microwaves is in order to obtain better isolation; Need external isolator; So just be unfavorable for miniaturization of devices and integrated requirement; And can cause certain mismatch when isolator is connected with waveguide filter, influence the performance of waveguide filter.Simultaneously, the cavity of traditional waveguide filter and cover sheet thickness are thin excessively, cause temperature distortion easily.
Summary of the invention
Need external isolator in order to solve traditional waveguide filter; Can influence the performance of waveguide filter; Also be unfavorable for miniaturization of devices and integrated problem, the invention provides a kind of waveguide filter that is integrated into the inner built-in isolator of waveguide filter, improved the isolation of waveguide filter isolator; Functional; And cover plate and cavity and the thickness of thickening waveguide filter differs less than 10% of cavity thickness, avoided the hidden danger of device temperature distortion, improved the reliability and stability of device.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is:
A kind of waveguide filter of built-in isolator; Comprise cover plate and cavity; Said cover plate and cavity snap together; It is characterized in that: some isolators are arranged at cover plate and cavity set inside; Said isolator comprise be symmetricly set in the cover plate upper surface with the cavity lower surface in first chamber, isolator magnetic field and the second isolator magnetic field that are used to place permanent magnet, between chamber, two isolator magnetic field, be provided with first metal matching blocks and second metal matching blocks, between two metal matching blocks, place ferrite.
The waveguide filter of aforesaid built-in isolator is characterized in that: said cavity also is provided with the isolator chamber, and said second metal matching blocks is arranged on the inside in said isolator chamber.
The waveguide filter of aforesaid built-in isolator is characterized in that: the thickness difference of said cover plate and cavity be not more than cavity thickness 10%.
The waveguide filter of aforesaid built-in isolator is characterized in that: said cover plate bottom also is provided with pin, and said cavity also is provided with groove, and is complementary with said pin.
The waveguide filter of aforesaid built-in isolator is characterized in that: inside, said isolator chamber also is provided with a plurality of tuning screws hole, and said a plurality of tuning screw pore size distributions are at the periphery of second metal matching blocks.
The invention has the beneficial effects as follows: with isolator be integrated into waveguide filter inside, can pass through integrated debugging, improved the isolation of waveguide filter; Make performance better, the thickening waveguide filter cover plate and cavity, and thickness difference be not more than cavity thickness 10%; Prevent that cover plate and cavity are thin excessively, the back distortion of being heated can be played the radiator extension effect; Avoid the hidden danger of device temperature distortion, improved the reliability and stability of device.
Description of drawings
Fig. 1 is the structural representation of the waveguide filter of the built-in isolator of the present invention;
Fig. 2 is the cover plate bottom surface structural representation of the waveguide filter of the built-in isolator of the present invention;
Fig. 3 is the cavity bottom surface structural representation of the waveguide filter of the built-in isolator of the present invention;
Fig. 4 is the front view of the waveguide filter of the built-in isolator of the present invention;
Fig. 5 is the end view of the waveguide filter of the built-in isolator of the present invention.
The Reference numeral implication is following:
1: cover plate; 2: cavity; 3: the tuning screw hole; 4: install and fix the hole; Chamber, 101: the first isolator magnetic field; 102: the first metal matching blocks; 103: pin; Chamber, 201: the second isolator magnetic field; 202: the second metal matching blocks; 203: the isolator chamber; 204: groove.
Embodiment
To combine Figure of description below, the present invention will be described further.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Extremely shown in Figure 5 like Fig. 1; A kind of waveguide filter of built-in isolator comprises cover plate 1 and cavity 2, and both sides, cover plate 1 bottom are provided with pin 103; Cavity 2 is being provided with groove 204 with pin 103 opposite position places; Pin 103 can be held in the groove 204, and cover plate 1 and cavity 2 are fastened to together, and the edge of cover plate 1 and cavity 2 also is provided with a plurality of holes 4 that install and fix; In cover plate 1 and cavity 2 both set inside some isolators are arranged; Said isolator comprise be symmetricly set in cover plate 1 upper surface with cavity 2 lower surfaces in the chamber, the first isolator magnetic field 101 and the chamber, the second isolator magnetic field 201 that are used to place permanent magnet, between chamber, two isolator magnetic field, be provided with first metal matching blocks 102 and second metal matching blocks 202, between two metal matching blocks, place ferrite.
Said cavity 2 also is provided with isolator chamber 203, the second metal matching blocks 202 and directly is processed in 203 inside, isolator chamber, and wherein 203 inner second metal matching blocks, 202 peripheries also are provided with absorber in the isolator chamber.
The thickness of said cover plate 1 and cavity 2 is tending towards identical, thickness difference be not more than cavity thickness 10%, guaranteed heat that the waveguide filter of built-in isolator in use produces make cover plate 1 with cavity 2 because thickness is different; Producing different power becomes; Cause perk on one side, thereby influence the performance of waveguide filter, cover plate 1 increases with cavity 2 integral thickness; Increased area of dissipation, made cover plate 1 and cavity 2 be not easy distortion.
203 inside, said isolator chamber also are provided with a plurality of tuning screws hole 3; Said a plurality of tuning screws hole 3 is distributed in the periphery of second metal matching blocks 202, can be in a plurality of tuning screws hole 3 tuning screws be installed, and tuning screw is spaced apart the multiple of wavelength; Tuning screw can make up a new boundary condition around ferritic; Length through regulating tuning screw changes its boundary condition, and the fields inside that changes built-in isolator distributes, and reaches the needed performance of waveguide filter.
The waveguide filter of built-in isolator of the present invention, the Installation and Debugging process is following:
At first, ferrite is glued between first metal matching blocks 102 and second metal matching blocks 202, the position of ferrite gummed can not guarantee disposable assembling; Make its performance reach optimum; This does not have much relations when the isolator Installation and Debugging, can through directly toward the isolator chamber 203 inner bonded ceramics adjust its performance to best, again permanent magnet is put into chamber, the first isolator magnetic field 101 and chamber, the second isolator magnetic field 201 respectively after; Build chamber, isolator magnetic field lid; Permanent magnet has just fixed, and so just accomplishes the installation of built-in isolator, can good isolation be provided for device.
Then, treat built-in isolator after waveguide filter installs, the tester just can't directly see at a distance from built-in internal structure from device; Just can not regulate with the method that increases pottery; Here just need the installation tuning screw around ferrite, to use and make up a new boundary condition, change its boundary condition, change the fields inside distribution of built-in isolator through the length of regulating tuning screw; Thereby revise waveguide filter to needed performance; If customer requirement output port standing-wave ratio is higher here, can also be in the isolator chamber 203 inner second metal matching blocks 202 around increase by four tuning screws, each tuning screw is spaced apart the multiple of wavelength; This mode can improve former standing wave, the good demand that satisfies the client.
In sum, the waveguide filter of built-in isolator of the present invention is integrated into waveguide filter inside with isolator; And cover plate and the cavity of thickening waveguide filter and the thickness difference thickness that is not more than cavity 10%, thereby increased area of dissipation, avoided the hidden danger of device temperature distortion; Reliability, stability and the isolation of device have been improved; Make performance better, volume is little, in light weight, simple to operate, easy for installation, good reliability, has improved production efficiency greatly.
Above-mentioned permanent magnet, ferrite and absorber are the vitals of isolator, belong to known technology, and mark does not come out in the accompanying drawings.
More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.
Claims (5)
1. the waveguide filter of built-in isolator; Comprise cover plate (1) and cavity (2); Said cover plate (1) snaps together with cavity (2); It is characterized in that: some isolators are arranged at cover plate (1) and both set inside of cavity (2); Said isolator comprises and being symmetricly set in cover plate (1) upper surface and the interior chamber, the first isolator magnetic field (101) and the chamber, the second isolator magnetic field (201) that are used to place permanent magnet of cavity (2) lower surface, between chamber, two isolator magnetic field, is provided with first metal matching blocks (102) and second metal matching blocks (202), between two metal matching blocks, places ferrite.
2. the waveguide filter of built-in isolator according to claim 1, it is characterized in that: said cavity (2) also is provided with isolator chamber (203), and said second metal matching blocks (202) is arranged on the inside in said isolator chamber (203).
3. the waveguide filter of built-in isolator according to claim 1 and 2 is characterized in that: the thickness difference of said cover plate (1) and cavity (2) be not more than cavity (2) thickness 10%.
4. the waveguide filter of built-in isolator according to claim 3, it is characterized in that: said cover plate (1) bottom also is provided with pin (103), and said cavity (2) also is provided with groove (204), and is complementary with said pin (103).
5. the waveguide filter of built-in isolator according to claim 4; It is characterized in that: inside, said isolator chamber (203) also is provided with a plurality of tuning screws hole (3), and said a plurality of tuning screws holes (3) are distributed in the periphery of second metal matching blocks (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210037758.3A CN102569958B (en) | 2012-02-20 | 2012-02-20 | Waveguide filter with built-in isolators |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210037758.3A CN102569958B (en) | 2012-02-20 | 2012-02-20 | Waveguide filter with built-in isolators |
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| Publication Number | Publication Date |
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| CN102569958A true CN102569958A (en) | 2012-07-11 |
| CN102569958B CN102569958B (en) | 2014-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107925144A (en) * | 2015-05-21 | 2018-04-17 | 株式会社Kmw | Waveguide pipe wave filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571214A (en) * | 2000-05-23 | 2005-01-26 | 松下电器产业株式会社 | Dielectric resonator filter and suppressing method of unwanted mode for the same |
| CN201063353Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter with naught cavity |
| CN201708235U (en) * | 2010-06-22 | 2011-01-12 | 南京广顺电子技术研究所 | Waveguide isolator adopting novel cavity with split type structure |
| CN202454700U (en) * | 2012-02-20 | 2012-09-26 | 南京灏众通信技术有限公司 | Waveguide filter with built-in isolators |
-
2012
- 2012-02-20 CN CN201210037758.3A patent/CN102569958B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571214A (en) * | 2000-05-23 | 2005-01-26 | 松下电器产业株式会社 | Dielectric resonator filter and suppressing method of unwanted mode for the same |
| CN201063353Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter with naught cavity |
| CN201708235U (en) * | 2010-06-22 | 2011-01-12 | 南京广顺电子技术研究所 | Waveguide isolator adopting novel cavity with split type structure |
| CN202454700U (en) * | 2012-02-20 | 2012-09-26 | 南京灏众通信技术有限公司 | Waveguide filter with built-in isolators |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107925144A (en) * | 2015-05-21 | 2018-04-17 | 株式会社Kmw | Waveguide pipe wave filter |
| CN107925144B (en) * | 2015-05-21 | 2020-08-04 | 株式会社Kmw | Waveguide filter |
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| Publication number | Publication date |
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| CN102569958B (en) | 2014-10-15 |
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Owner name: NANJING TIANXUAN ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: NANJING HERMERC TELECOM TECHNOLOGIES CO., LTD. Effective date: 20140627 |
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Effective date of registration: 20140627 Address after: 210034, 5 floor, 4 Nanjing science and technology innovation center, Qixia District, Jiangsu Applicant after: NANJING HERMERC TELECOM TECHNOLOGIES CO., LTD. Address before: 210034, Nanjing, Jiangsu province Nanjing city Qixia District Yao street, Gan family side, No. 108 East Applicant before: Nanjing Hermerc Telecom Technologies Co., Ltd. |
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Address after: 210034, Nanjing, Jiangsu province Qixia District Yao street, Gan family side, No. 108 East 04 Patentee after: Nanjing dry Communication Technology Co., Ltd. Address before: 210034, 5 floor, 4 Nanjing science and technology innovation center, Qixia District, Jiangsu Patentee before: NANJING HERMERC TELECOM TECHNOLOGIES CO., LTD. |