CN2088762U - Vertical duplexer - Google Patents
Vertical duplexer Download PDFInfo
- Publication number
- CN2088762U CN2088762U CN 91201895 CN91201895U CN2088762U CN 2088762 U CN2088762 U CN 2088762U CN 91201895 CN91201895 CN 91201895 CN 91201895 U CN91201895 U CN 91201895U CN 2088762 U CN2088762 U CN 2088762U
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- CN
- China
- Prior art keywords
- duplexer
- coupling
- cavity
- section bar
- vertical
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Abstract
The utility model relates to a vertical duplexer for simultaneous receiving and emitting of a radio station, wherein, a left branch is coupling with an inductance for forming a low pass high resistance section, and a right branch is coupling with a capacitor for forming a high pass low resistance section. The left and the right branches are respectively provided with three series resonance band elimination filters, each filter is arranged in a cavity structure which is made of aluminum sectional material, and the external parts are respectively connecting assembled as integration by a coaxial cable which is especially used for quarter wave of corresponding frequency. The utility model has the advantages of good isolation, high quality, little material consumption, small size, simple process, convenient installation, convenient adjustment, easy fabrication and reasonable cost performance.
Description
The utility model belongs to the improvement of band resistance formula duplexer.More particularly, it is that private cable with band stop filter, aluminium section bar cavity and length-specific combines, and allows to make radio station to realize a kind of device that transmits and receives simultaneously with an antenna.
At present, radio station mainly contains the high pass filter made from electric capacity, inductance lumped-parameter element in the VHF frequency range, use the coaxial resonator trap again, to form high pass low-resistance and low pass high resistant characteristic, though this device dependable performance, but volume is big, is not easy to install.In uhf band, mainly contain the spiral duplexer made from the passive high-frequency element of three ends, as the patent No. CN88200494U " UHF duplexer ", be characterized in advanced technology, weak point is to adopt the spliced cavity body structure of copper coin, complex process, inconvenience is produced, and cost is higher.
The purpose of this utility model just is to remedy the deficiencies in the prior art, adopts aluminium section bar to make cavity body structure, combines and a kind of vertical duplexer made with the private cable of band stop filter and length-specific.
Description of drawings:
Fig. 1, vertical diplexer structure schematic diagram.
Fig. 2, vertical duplexer electrical schematic diagram.
Fig. 3, when operating frequency is 150MHZ, the amplitude-frequency characteristic of vertical duplexer.
Composition of the present utility model, architectural feature and operation principle thereof can be illustrated by Fig. 1, Fig. 2:
In Fig. 2,00 '-11 ' section is a low pass high resistant section, and 00 '-22 ' section is a high pass low-resistance section.With the coupling of quarter-wave dedicated coaxial cable six series resonance band stop filters are coupled together and to combine duplexer.With antenna end (00 ') is symmetrical centre, and the branch road on a left side (00 '-11 '), right (00 '-22 ') both sides such as all chooses at element responds, respectively is three series resonance band stop filters.Left side branch road is the band stop filter that adopts inductance coupling high, and length is f
LowQuarter-wave dedicated coaxial cable be 90 ° of paraphase devices, its characteristic impedance is 50 Ω.Right branch road is to adopt capacity coupled series resonance filter, and length is f
HighQuarter-wave dedicated coaxial cable be 90 ° of paraphase devices, its characteristic impedance is 50 Ω.
In Fig. 1, chief component is aluminium section bar cavity (2), and three series resonance band stop filters of left and right branch road are respectively with one, have six, shield with the copper coin splicing with aluminium section bar cavity shielding ratio, process structure is simple, isolation effect is good, and cost can reduce greatly.Inner frame (5) is made with polytetrafluoroethylene, is used for fixing the spiral inner wire of being made by the spiral coiling (4).f
HighEnd coupling capacitance C(6), its tapping point is fixed on 1/2nd circle places of inner wire (4).Tuning screw (12) can be adjusted capacitor C
1, C
2Silver-plated screw.Coupling inductance L(19) be 3/4ths circle rings made from the silver-plated optical copper wire of φ 0.8, its tap position is at 1/2nd circle places of inner wire (4).C
3-J
3Radio frequency cable (10) and C
3-J
3Radio frequency plug (18) constitutes the output of antenna end and left and right branch road.Dedicated coaxial cable (15), its length are f
HighQuarter-wave, model is SFT-50-2-1, outer conductor portion is welded on the screening cover (20), inner wire part (heart yearn) and coupling capacitance C(6) an end link to each other.Dedicated coaxial cable (13), its length are f
LowQuarter-wave, model is SFT-50-2-1, outer conductor portion is welded on the screening cover (20), inner wire part with
Close inductance 2(19) an end link to each other.Each series resonance band stop filter is contained in one
In the section bar cavity (2), be followed successively by tunable screw (12), inner frame (5), inner wire (4), coupling capacitance C(6 from the inside to surface) or coupling inductance L(19), outermost layer is aluminium section bar cavity (2).In addition, following screening cover (1), pad post (8), packing ring (9), unload loading nut (11) trip bolt (14), go up the part that screening cover (20) is duplexer, play fastening and shielding action.The effect of shroud sleeve (17) is that left and right branch road and antenna three ends are communicated with, as among Fig. 20 ' common point.
The utility model is installed in the aluminium section bar cavity each helical resonator owing to adopted aluminium section bar to make cavity, can accomplish Q matter height like this, and isolation is good.And materials are few, and volume is little, and technology is simple, are convenient to install, and debugging is convenient, are easy to produce, and the ratio of performance to price is reasonable, is the shared desirable duplexers of radio station's sending and receiving.
Fig. 1 also is the embodiment of the utility model when operating frequency is 150MHZ.Whole volume is 90 * 70 * 50mm
3Along with the rising of operating frequency, its volume can correspondingly reduce.
Claims (2)
1, the shared vertical duplexer of a kind of sending and receiving, mainly form, it is characterized in that cavity (2) adopts the aluminium section bar structure by cavity (2), spiral inner wire (4), inner frame (5), tuning screw (12), coupling capacitance C (6), coupling inductance L (19), quarter-wave dedicated coaxial cable (13), (15), radio frequency cable (10) and radio frequency plug (18).
2, according to the described vertical duplexer of claim 1, it is characterized in that each band stop filter is contained in respectively in the aluminium section bar cavity (2), be followed successively by tuning screw (12), inner frame (5), inner wire (4), coupling capacitance C(6 from the inside to surface) or coupling inductance L(19), outermost layer is aluminium section bar cavity (2), left and right each one group, every group 3 (totally 6), each couples together with quarter-wave private cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91201895 CN2088762U (en) | 1991-01-31 | 1991-01-31 | Vertical duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91201895 CN2088762U (en) | 1991-01-31 | 1991-01-31 | Vertical duplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2088762U true CN2088762U (en) | 1991-11-13 |
Family
ID=4912562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91201895 Withdrawn CN2088762U (en) | 1991-01-31 | 1991-01-31 | Vertical duplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2088762U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471168B (en) * | 2007-12-27 | 2011-06-29 | 奥雷通光通讯设备（上海）有限公司 | Installation method for inductor of duplexer |
| CN112532772A (en) * | 2020-11-23 | 2021-03-19 | 惠州Tcl移动通信有限公司 | Antenna tuning circuit, implementation method and mobile terminal |
-
1991
- 1991-01-31 CN CN 91201895 patent/CN2088762U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471168B (en) * | 2007-12-27 | 2011-06-29 | 奥雷通光通讯设备（上海）有限公司 | Installation method for inductor of duplexer |
| CN112532772A (en) * | 2020-11-23 | 2021-03-19 | 惠州Tcl移动通信有限公司 | Antenna tuning circuit, implementation method and mobile terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |