CN201946729U - FM (frequency modulation) vertical multiplexer - Google Patents
FM (frequency modulation) vertical multiplexer Download PDFInfo
- Publication number
- CN201946729U CN201946729U CN2010206591835U CN201020659183U CN201946729U CN 201946729 U CN201946729 U CN 201946729U CN 2010206591835 U CN2010206591835 U CN 2010206591835U CN 201020659183 U CN201020659183 U CN 201020659183U CN 201946729 U CN201946729 U CN 201946729U
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- outer conductor
- coupler
- coupling strip
- strip line
- multiplexer
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Abstract
An FM (frequency modulation) vertical multiplexer comprises a plurality of duplexers which comprises two couplers, two band-pass filters and an absorption load. Each coupler is provided with an outer conductor which is provided with two coupling strip lines arranged in a parallel mode on the inner portion of the outer conductor, and a plane of the coupling strip lines is parallel to a side face of the outer conductor. Two connecting ports are correspondingly arranged on an upper surface and a lower surface of the outer conductor respectively. A top portion of each band-pass filter is provided with two connecting ports. The two couplers are crossly arranged above the two band-pass filters respectively. The two connecting ports arranged on the bottom of the coupler are correspondingly connected with the ports arranged on the tops of the two band-pass filters vertically and oppositely. Two opposite angles of each coupling strip line are provided with a connecting point respectively, and the connecting ports corresponding to the outer conductor of the connecting point are arranged on an upper side edge and a lower side edge of the coupling strip line, and the two coupling strip lines are opposite and arranged in a parallel mode. Accordingly, the FM vertical multiplexer needs no connecting bends, so that the plugging and connecting consumptions are reduced effectively, and the installation space is saved.
Description
Technical field
The utility model relates to a kind of multiplexer, especially relates to a kind of minimizing connecting link, reduces the vertical multiplexer of FM (frequency modu1ation/ frequency modulation) that inserts loss.
Background technology
Along with being on the increase of program, the launching tower Space Day that fixes up an aerial wire is becoming tight, multiplexer can be synthesized to the signal power of several roads different frequency on one road antenna-feedback system without interfering with each other, can avoid repeating to build transmitting station, launching tower, transmitting antenna under given conditions.Reach and reduce investment and land seizure under the situation of same coverage effect greatly, for the user who does not have the space mounting antenna realizes the covering scheme.
But existing multiplexer normally three-dB coupler can not directly be connected with filter, need to transfer by elbow, as the multiplexer that is provided with parallel coupler commonly used, its bottom is provided with filter, be provided with the coupler that be arranged in parallel in the top of filter, because coupler corresponding input end and output are positioned at the homonymy of coupling strip line, the coupling conductors interconnection of coupler and filter simultaneously, so just, force coupler no matter parallel up and down or about be arranged in parallel, all have at least the coupling conductors of a side need use connecting bend to realize being connected of filter and coupler with at least one turning; Further, because the length of the coupling strip line of coupler inside is identical, with the tie point of coupling conductors also is corresponding fixing, so when be arrangeding coupler up and down in parallel, the coupling conductors of last coupler shelters from down the corresponding link of coupler, the employed connecting bend of coupling conductors must have two turnings in the event, thereby dodges down the link of coupler.
Therefore, the existing multiplexer that is provided with parallel coupler, complicated integral structure, volume is bigger than normal; Not only take a large amount of device spaces, reduced the frequency signal coverage rate that can have in the service behaviour of equipment and the unit space, and in production and assembly, waste too much material, increased loaded down with trivial details operation, increased manufacturing cost.
The utility model content
The technical problem that the utility model solves provides the vertical multiplexer of a kind of FM, reduces connecting link, reduces and inserts loss.
Technical solution of the present utility model is:
The vertical multiplexer of a kind of FM, comprise a plurality of duplexers, described duplexer includes two couplers, two band pass filters and an absorbing load, described coupler is provided with outer conductor, described outer conductor inside is provided with the two parallel coupling strip lines that are set up in parallel, and the plane parallel of described coupling strip line is in the side of described outer conductor, wherein: the end face of described outer conductor and bottom surface correspondence respectively are provided with two connectivity ports, each described band pass filter top is provided with two connectivity ports, two described couplers are respectively across being arranged at two band pass filter tops, two connectivity ports of described coupler bottom surface vertically over against ground respectively with the corresponding connection of port at two described band pass filter tops, constitute vertical diplexer structure.
The vertical multiplexer of above-mentioned FM, wherein, wherein two diagonal angles of described coupling strip line are respectively equipped with a tie point, and the connectivity port of the corresponding outer conductor of described tie point is located on the upper side edge and lower side of described coupling strip line antiparallel being set up in parallel in the two described coupling strip line left and right sides respectively; Described tie point is connected with inner wire respectively, and described inner wire correspondence wears on the connectivity port of being fixed in described outer conductor, constitutes cross-linked coupler structure.
The vertical multiplexer of above-mentioned FM, wherein, described coupling strip line is silver-plated brass sheet.
The vertical multiplexer of above-mentioned FM, wherein, described coupler is 3 db couplers.
The vertical multiplexer of above-mentioned FM, wherein, described outer conductor is an aluminium section bar mass shell body, its internal diameter size is 800 * 180 * 180mm.
The vertical multiplexer of above-mentioned FM, wherein, the inboard corresponding described coupling strip line in described outer conductor two ends is respectively equipped with the electric capacity ring, and described electric capacity ring diameter is 80mm.
Learn that by above explanation the utility model can reach following effect compared with prior art really:
The coupler of the vertical multiplexer of FM of the present utility model is a cross coupling structure, can directly link to each other with band pass filter, and need not additionally to add connecting bend, reduces connecting link, effectively reduces the insertion loss; Thereby make overall structure simple, volume is little, not only can improve unit space signal coverage rate, reduces the assembling complexity, and can also reduce the manufacturing cost and use cost of equipment.
Description of drawings
Fig. 1 is the longitudinal profile structural representation of the coupler of the vertical multiplexer of FM of the present utility model;
Fig. 2 is that schematic diagram is arranged in the side-looking of the duplexer of the vertical multiplexer of FM of the present utility model;
Fig. 3 overlooks the layout schematic diagram for the duplexer of the vertical multiplexer of FM of the present utility model;
Fig. 4 is the work schematic diagram of one of them duplexer of the vertical multiplexer of FM of the present utility model.
The main element label declaration:
1: coupler 2: band pass filter 11: outer conductor
12: coupling strip line 13: electric capacity ring 14: inner wire
15: tie point 16: connectivity port
Embodiment
In order to solve the deficiency of existing multiplexer, the vertical multiplexer of the frequency modulation that the utility model provides can frequency interval is more approaching signal power be synthesized on one road antenna transmission system without interfering with each other, can avoid repeating to build transmitting station, launching tower, transmitting antenna, reach same coverage effect, reduced equipment investment.Further, the utlity model has the coupler of cross coupling structure, can directly link to each other, reduce connecting link, insert loss, effectively improved the service behaviour of equipment thereby reduce with band pass filter.
The vertical multiplexer of FM of the present utility model, novel structure, simply, be skillfully constructed, it comprises a plurality of duplexers, duplexer includes two couplers, two band pass filters and an absorbing load, coupler is provided with outer conductor, outer conductor inside is provided with the two parallel coupling strip lines that are set up in parallel, and the plane parallel of coupling strip line is in the side of outer conductor, wherein: the end face of outer conductor and bottom surface correspondence respectively are provided with two connectivity ports, each band pass filter top is provided with two connectivity ports, two couplers are respectively across being arranged at two band pass filter tops, two connectivity ports of coupler bottom surface vertically over against ground respectively with the corresponding connection of port at two band pass filter tops, constitute vertical diplexer structure;
Further, the vertical multiplexer of FM of the present utility model, wherein two diagonal angles of its coupling strip line are respectively equipped with a tie point, and the connectivity port of the corresponding outer conductor of described tie point is located at respectively on the upper side edge and lower side of coupling strip line, and two the coupling strip line left and right sides is antiparallel is set up in parallel; Described tie point is connected with inner wire respectively, and the inner wire correspondence wears on the connectivity port of being fixed in outer conductor, constitutes cross-linked coupler structure.
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
A preferred embodiment of the present utility model, please refer to Fig. 1 to shown in Figure 3, what be respectively the longitudinal profile structural representation of the duplexer of the vertical multiplexer of FM of the present utility model, coupler that schematic diagram and the utility model FM multiplexer are arranged in side-looking overlooks the layout schematic diagram.
Among this embodiment, the vertical multiplexer of FM of the present utility model comprises a plurality of duplexers, and every cover duplexer includes two couplers 1, two band pass filters 2 and absorbing loads, as shown in Figure 1:
Each coupler 1 is provided with outer conductor 11, and outer conductor 11 inside are provided with two coupling strip lines that be arranged in parallel 12, and the plane parallel of coupling strip line 12 sees also Figure 1 and Figure 2 in the side of outer conductor 11, wherein:
The end face of outer conductor 11 and bottom surface correspondence respectively are provided with two connectivity ports, each band pass filter 2 top is provided with two connectivity ports, two couplers 1 are respectively across being arranged at two band pass filter 2 tops, two connectivity ports 16 of coupler 1 bottom surface vertically over against ground respectively with the corresponding connection of port at two band pass filter 2 tops, constitute vertical diplexer structure.
Wherein two diagonal angles of coupling strip line 12 are respectively equipped with a tie point 15, and the connectivity port 16 of described tie point 15 corresponding outer conductors 11 is located on the upper side edge and lower side of coupling strip line 12 antiparallel being set up in parallel in two coupling strip lines, 12 left and right sides respectively; Therefore, two tie points 15 of each coupling strip line 12 become the diagonal angle setting on this coupling strip line 12, when be arrangeding two coupling strip lines 12 side by side in parallel, two coupling strip lines about 12 oppositely are set up in parallel, so that form the arrangement of cross-couplings strip line 12.Tie point 15 is connected with inner wire 14 respectively, and inner wire 14 correspondences wear on the connectivity port 16 of being fixed in outer conductor 11.
By said structure, the utility model makes two inputs of coupler structure be positioned at phase the same side dexterously, thereby coupler of the present utility model 1 can be connected with the direct of band pass filter 2, and need not the auxiliary of accessory such as connecting bend; Two coupling strip line 11 staggered forms outputs have reduced the loss of multiplexer, have saved installing space.
Preferably, the coupler 1 of the vertical multiplexer of FM of the present utility model, its outer conductor 11 is an aluminium section bar mass shell body, and its internal diameter size is 800 * 180 * 180mm, and is highly polished, and mechanical dimension's error is little.
Further, the inboard corresponding coupling strip line 12 in outer conductor 11 two ends is respectively equipped with electric capacity ring 13, and the diameter of electric capacity ring 13 is 80mm.
The vertical multiplexer of FM of the present utility model, preferably, its coupling strip line 12 adopts silver-plated brass sheet to make, and length is λ
0/ 4 (corresponding to the centre frequencies of frequency modulation frequency range), coupling strip line is silver-plated brass sheet.
With coupler structure of the present utility model as mentioned above, respectively with strange film excitation and two kinds of situations of even mould excitation, utilizing superposition theorem to calculate characteristic impedance is 50 ohm, position by control capacittance ring 13 and back river strip line 12, the additional inductor of coupling strip line 12 with the inner wire 14 junctions generation of coaxial line compensated, realized following technical indicator:
1, realize that the power that transmission ends and coupled end are got is 3 ± 0.15dB, coupler of the present utility model is a three-dB coupler;
2, each port voltage standing-wave ratio VSWR≤1.07;
3, the isolation 〉=30dB of input and isolation end.
In sum, what the vertical multiplexer of FM of the present utility model, its coupler structure can be stable is divided equally into two-way to one road signal, makes the two paths of signals amplitude difference less than 0.3dB, and about phase phasic difference 90 degree of two paths of signals.
The vertical multiplexer of FM of the present utility model adopts high Q value resonant cavity band-pass filter, and overall performance is superior, advanced technology, and the minimum interval reaches 0.8MHz between frequency, has saved frequency resource effectively.
As shown in Figure 4, be the work schematic diagram of one of them duplexer of the vertical multiplexer of the utility model FM, comprise two couplers, two band pass filters and an absorbing load.See also Fig. 2 and Fig. 3, two couplers are across on two band pass filters, and the connectivity port on the little surface of coupler is with after band pass filter directly is connected, the connectivity port of the upper surface of first coupler is arrowband input and absorption edge, two connectivity ports of lower surface are output, wherein, the output of coupler lower surface and the coupling of arrowband input is the coupling output, and arrowband input and absorption edge are isolated; Two connectivity ports of another coupler lower surface are input, and two connectivity ports of upper surface are respectively broadband input and total output.
As shown in Figure 4, the arrowband input signal is connected with first end of first coupler, and wherein two of coupler outputs are connected with two band pass filters respectively, and the absorption edge of coupler is connected with an absorbing load, is used to offset dump power; Thus, this coupler is divided into two the arrowband input signal, and phase phasic difference 90 degree, and is transported to two same frequency band pass filters.
The output of two filters connects the input of second coupler lower surface respectively, and broadband input is connected with a connectivity port of this coupler upper surface, total output output composite signal of this coupler; By the effect of second coupler, two-way narrow band signal and a band signal of having a lot of social connections is synthesized one road signal and outwards exports.
The technical parameter of the vertical multiplexer of FM of the present utility model is:
Frequency range (Frequency range): 87MHz～108MHz
Peak power output 50kW
Input power 20kW
Input impedance (Impedance): 50 Ω
Standing-wave ratio (VSWR) :≤1.07
Insert loss (arrowband)＜0.4dB
Insert loss (broadband)＜0.2dB
Isolation (wide-narrow)＞35dB
Minimum frequency space 0.8MHz
Input port (Input): 31/8 " EIA
The vertical multiplexer of FM of the present utility model is by being provided with the coupling strip line structure of coupler cleverly, make the connectivity port of coupler form the intersection export structure, thereby can make and directly be connected between coupler and the band pass filter and need not the auxiliary of connecting bend, simple in structure, reduce equipment cost, improved the service efficiency of the confined space.
The above only is the schematic embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (6)
1. vertical multiplexer of FM, comprise a plurality of duplexers, described duplexer includes two couplers, two band pass filters and an absorbing load, described coupler is provided with outer conductor, described outer conductor inside is provided with the two parallel coupling strip lines that are set up in parallel, and the plane parallel of described coupling strip line is characterized in that in the side of described outer conductor:
The end face of described outer conductor and bottom surface correspondence respectively are provided with two connectivity ports, each described band pass filter top is provided with two connectivity ports, each described coupler is across being arranged at two described band pass filter tops, two connectivity ports of described coupler bottom surface vertically over against ground respectively with the corresponding connection of port at two described band pass filter tops, constitute vertical diplexer structure.
2. the vertical multiplexer of FM as claimed in claim 1, it is characterized in that, wherein two diagonal angles of described coupling strip line are respectively equipped with a tie point, and the connectivity port of the corresponding described outer conductor of described tie point is located on the upper side edge and lower side of described coupling strip line antiparallel being set up in parallel in the two described coupling strip line left and right sides respectively; Described tie point is connected with inner wire respectively, and described inner wire correspondence wears on the connectivity port of being fixed in described outer conductor, constitutes cross-linked coupler structure.
3. the vertical multiplexer of FM as claimed in claim 1 is characterized in that described coupling strip line is silver-plated brass sheet.
4. the vertical multiplexer of FM as claimed in claim 1 is characterized in that described coupler is 3 db couplers.
5. the vertical multiplexer of FM as claimed in claim 1 is characterized in that, described outer conductor is an aluminium section bar mass shell body, and its internal diameter size is 800 * 180 * 180mm.
6. the vertical multiplexer of FM as claimed in claim 1 is characterized in that, the inboard corresponding described coupling strip line in described outer conductor two ends is respectively equipped with the electric capacity ring, and described electric capacity ring diameter is 80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206591835U CN201946729U (en) | 2010-12-14 | 2010-12-14 | FM (frequency modulation) vertical multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206591835U CN201946729U (en) | 2010-12-14 | 2010-12-14 | FM (frequency modulation) vertical multiplexer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946729U true CN201946729U (en) | 2011-08-24 |
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ID=44474065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206591835U Expired - Fee Related CN201946729U (en) | 2010-12-14 | 2010-12-14 | FM (frequency modulation) vertical multiplexer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201946729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928732A (en) * | 2014-05-07 | 2014-07-16 | 电子科技大学 | Micro-strip line absorption band-pass filter |
| CN111344895A (en) * | 2017-10-13 | 2020-06-26 | 康普技术有限责任公司 | Power coupler with antenna element power sink and related apparatus |
-
2010
- 2010-12-14 CN CN2010206591835U patent/CN201946729U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928732A (en) * | 2014-05-07 | 2014-07-16 | 电子科技大学 | Micro-strip line absorption band-pass filter |
| CN111344895A (en) * | 2017-10-13 | 2020-06-26 | 康普技术有限责任公司 | Power coupler with antenna element power sink and related apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20191214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |