CN203839490U - Passive electrically-tunable phase shifter - Google Patents
Passive electrically-tunable phase shifter Download PDFInfo
- Publication number
- CN203839490U CN203839490U CN201420274270.7U CN201420274270U CN203839490U CN 203839490 U CN203839490 U CN 203839490U CN 201420274270 U CN201420274270 U CN 201420274270U CN 203839490 U CN203839490 U CN 203839490U
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- CN
- China
- Prior art keywords
- insulation medium
- medium board
- phase shifter
- shell
- voltage controlled
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a passive electrically-tunable phase shifter which comprises an upper metal half housing, upper buffer foams, an upper insulation medium plate, a micro-strip circuit board, a lower insulation medium plate, lower buffer foams, a lower metal half housing, nylon fasteners, a shield adhesive tape and a pull bar module. The passive electrically-tunable phase shifter is simple in structure, easy to assemble, low in cost, and high in PIM index.
Description
Technical field
The utility model relates to passive voltage controlled phase shifter.
Background technology
Mobile communication system is wired and wireless synthesis, and base station is an important part of mobile communication system.And phase shifter is base station " knowledge ", it is the critical component of base station front end.Phase shifter plays a part to receive and the carrier wave that transmits.In mobile communications network, phase shifter is directly determining the covering of base station network and the transmission of signal, most important for the running quality of mobile communication system.Along with mobile communication system, especially the development of 2.5G and 3G system and universal, in city, base station distribution is more and more intensive, communications band is more and more, as GSM(900MHz and 1900MHz), DCS (1800MHz), PCS(1900MHz), UMTS(2000MHz), ISM (2450MHz) etc., these directly brought between base station disturb and antenna between the problem such as disturb.Meanwhile, along with the development of urban construction, high buildings and large mansions constantly emerge, and cause the multiple transmitting of radio wave and block, and make pilot pollution in communication network, area covered, and multipath effect is day by day serious.How to address the above problem and become the key issue that base station network distributes and optimizes.
Utility model content
The purpose of this utility model is to provide a kind of passive voltage controlled phase shifter, and it is simple for structure, assembling is simple, cost is low, and PIM index is high.
For achieving the above object, the technical solution of the utility model is a kind of passive voltage controlled phase shifter of design, comprises by metal upper half-shell, upper buffering foam, upper insulation medium board, microstripline plate, lower insulation medium board, lower buffering foam, metal housing lower half, nylon fasteners, shielding tape, pull bar module;
Described lower buffering foam is fixed on metal housing lower half inwall; Described lower insulation medium board is placed in lower buffering foam end face; Described microstripline plate is placed in lower dielectric plate top surface; Described upper insulation medium board is placed in microstripline plate top surface; Described upper buffering foam is placed in dielectric plate top surface, and is fixed on metal upper half-shell inwall;
Described upper insulation medium board, lower insulation medium board are connected with pull bar module respectively, and described pull bar module is for laterally pulling insulation medium board, lower insulation medium board and then control phase angle;
Described metal upper half-shell, metal housing lower half are provided with securing member installing hole, and described metal upper half-shell is covered on metal housing lower half, and by running through the nylon fasteners of securing member installing hole and fastening;
Described shielding tape is fixed on the gap, junction of metal upper half-shell and metal housing lower half;
Described microstripline plate is provided with absorption resistance.
During assembling, first at the fixing lower buffering foam of metal housing lower half inwall, on metal upper half-shell inwall is fixing, cushion foam, lower insulation medium board is placed on lower buffering foam again, again microstripline plate is placed on lower insulation medium board, again upper insulation medium board is placed on microstripline plate, the metal upper half-shell that finally inwall is fixed with to upper buffering foam covers, fastening by nylon fasteners, in the gap, junction of metal upper half-shell and metal housing lower half, stick shielding tape again, also by upper insulation medium board, lower insulation medium board is connected with pull bar module respectively.
Preferably, between described metal upper half-shell, metal housing lower half, be provided with insulation insulated column, to keep the spacing between metal upper half-shell, metal housing lower half.
Preferably, described upper insulation medium board, lower insulation medium board are symmetrical arranged with microstripline plate, and this symmetry can guarantee that transfer impedance is consistent.
Preferably, described upper buffering foam, lower buffering foam are symmetrical arranged with microstripline plate.Buffering foam symmetry can guarantee that microstrip line steadily vertically in dielectric-slab, is not easy deformation.
Preferably, described upper insulation medium board, lower insulation medium board are spliced by four insulation boards.Due to pcb board 1.2M, process for integrally manufacturing is high and intensity is low, adopts multi-disc splicing can reduce material, reduces Product Process difficulty.
Preferably, the thickness of described upper insulation medium board, lower insulation medium board is 2.92mm.This thickness guarantees that input and output impedance is in prescribed limit.
Preferably, described metal upper half-shell and metal housing lower half surface are provided with electrodeposited coating, to improve PIM index.
Preferably, described microstripline plate top surface, bottom surface are all provided with absorption resistance, and the absorption resistance of the absorption resistance of microstripline plate top surface and microstripline plate bottom surface is symmetrical arranged with microstripline plate.This microstrip line is 2 tunnel input and output.Symmetrical expression guarantees that the signal index on 2 tunnels is consistent.
Preferably, described absorption resistance is positioned at the 90° corner of microstrip line on microstripline plate.When the turning of high-frequency signal by circuit can produce interference feedback signal, resistance now plays the effect that absorbs interference signal, plays and improves PIM index.
The passive voltage controlled phase shifter of the utility model has following features:
1, metal upper half-shell and metal housing lower half adopt nylon fasteners to be connected, assemble simple and convenient, long service life, cost is low.
2, shielding tape is posted in the gap, junction of metal upper half-shell and metal housing lower half, has and well stops jamming performance, reduces lossy microwave, improves PIM index.
3, described microstripline plate is provided with absorption resistance, promotes PIM index.
4, the obvious optimization of the more mechanical antenna of electrical tilt antenna directional diagram of the passive voltage controlled phase shifter of application the utility model, whole antenna pattern is all in this base station section, increase tilt angled down, can make sector area coverage dwindle, but do not produce interference, in addition, the third order intermodulation index PIM of electrical tilt antenna is-158dBc to be conducive to eliminate adjacent frequency and clutter interference.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection range of the present utility model with this.
The concrete technical scheme of implementing of the utility model is:
As shown in Figure 1, a passive voltage controlled phase shifter, comprises by metal upper half-shell 1, upper buffering foam 2, upper insulation medium board 3, microstripline plate 4, lower insulation medium board 5, lower buffering foam 6, metal housing lower half 7, nylon fasteners, shielding tape 8, pull bar module 9;
Described lower buffering foam 6 is fixed on metal housing lower half 7 inwalls; Described lower insulation medium board 5 is placed in lower buffering foam 6 end faces; Described microstripline plate 4 is placed in lower insulation medium board 5 end faces; Described upper insulation medium board 3 is placed in microstripline plate 4 end faces; Described upper buffering foam 2 is placed in insulation medium board 3 end faces, and is fixed on metal upper half-shell 1 inwall;
Described upper insulation medium board 3, lower insulation medium board 5 are connected with pull bar module 9 respectively, and described pull bar module 9 is for laterally pulling upper insulation medium board 3, lower insulation medium board 5, and then control phase angle;
Described metal upper half-shell 1, metal housing lower half 7 are provided with securing member installing hole, and described metal upper half-shell 1 is covered on metal housing lower half 7, and by running through the nylon fasteners of securing member installing hole and fastening;
Described shielding tape 8 is fixed on the gap, junction of metal upper half-shell 1 and metal housing lower half 7;
Described microstripline plate 4 end faces, bottom surface are all provided with absorption resistance, and the absorption resistance 101 of microstripline plate 4 end faces is symmetrical arranged with microstripline plate 4 with the absorption resistance 102 of microstripline plate 4 bottom surfaces.Described absorption resistance 101,102 is positioned at the 90° corner of microstrip line on microstripline plate.When the turning of high-frequency signal by circuit can produce interference feedback signal, resistance now plays the effect that absorbs interference signal, plays and improves PIM index.
Described upper insulation medium board 3, lower insulation medium board 5 are symmetrical arranged with microstripline plate 4.
Described upper buffering foam 2, lower buffering foam 6 are symmetrical arranged with microstripline plate 4.
Described upper insulation medium board 3, lower insulation medium board 5 are spliced by four insulation boards.
The thickness of described upper insulation medium board 3, lower insulation medium board 5 is 2.92mm.
Described metal upper half-shell 1 and metal housing lower half 7 surfaces are provided with electrodeposited coating, to improve PIM index.
During assembling, first at the fixing lower buffering foam 6 of metal housing lower half 7 inwalls, on metal upper half-shell 1 inwall is fixing, cushion foam 2, again lower insulation medium board 5 is placed on lower buffering foam 6, microstripline plate 4 is placed on lower insulation medium board 5 again, again upper insulation medium board 3 is placed on microstripline plate 4, the metal upper half-shell 1 that finally inwall is fixed with to upper buffering foam 2 covers, fastening by nylon fasteners, in the gap, junction of metal upper half-shell 1 and metal housing lower half 7, stick shielding tape 8 again, also by upper insulation medium board 3, lower insulation medium board 5 is connected with pull bar module 9 respectively.
Described metal upper half-shell 1,7 of metal housing lower halfs can also be provided with insulation insulated column, to keep the spacing between metal upper half-shell 1, metal housing lower half 7.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (9)
1. passive voltage controlled phase shifter, is characterized in that, comprises by metal upper half-shell, upper buffering foam, upper insulation medium board, microstripline plate, lower insulation medium board, lower buffering foam, metal housing lower half, nylon fasteners, shielding tape, pull bar module;
Described lower buffering foam is fixed on metal housing lower half inwall; Described lower insulation medium board is placed in lower buffering foam end face; Described microstripline plate is placed in lower dielectric plate top surface; Described upper insulation medium board is placed in microstripline plate top surface; Described upper buffering foam is placed in dielectric plate top surface, and is fixed on metal upper half-shell inwall;
Described upper insulation medium board, lower insulation medium board are connected with pull bar module respectively, and described pull bar module is for laterally pulling insulation medium board, lower insulation medium board;
Described metal upper half-shell, metal housing lower half are provided with securing member installing hole, and described metal upper half-shell is covered on metal housing lower half, and by running through the nylon fasteners of securing member installing hole and fastening;
Described shielding tape is fixed on the gap, junction of metal upper half-shell and metal housing lower half;
Described microstripline plate is provided with absorption resistance.
2. passive voltage controlled phase shifter according to claim 1, is characterized in that, between described metal upper half-shell, metal housing lower half, is provided with insulation insulated column.
3. passive voltage controlled phase shifter according to claim 1 and 2, is characterized in that, described upper insulation medium board, lower insulation medium board are symmetrical arranged with microstripline plate.
4. passive voltage controlled phase shifter according to claim 3, is characterized in that, described upper buffering foam, lower buffering foam are symmetrical arranged with microstripline plate.
5. passive voltage controlled phase shifter according to claim 4, is characterized in that, described upper insulation medium board, lower insulation medium board are spliced by four insulation boards.
6. passive voltage controlled phase shifter according to claim 5, is characterized in that, the thickness of described upper insulation medium board, lower insulation medium board is 2.92mm.
7. passive voltage controlled phase shifter according to claim 6, is characterized in that, described metal upper half-shell and metal housing lower half surface are provided with electrodeposited coating.
8. passive voltage controlled phase shifter according to claim 7, is characterized in that, described microstripline plate top surface, bottom surface are all provided with absorption resistance, and the absorption resistance of the absorption resistance of microstripline plate top surface and microstripline plate bottom surface is symmetrical arranged with microstripline plate.
9. passive voltage controlled phase shifter according to claim 8, is characterized in that, described absorption resistance is positioned at the 90° corner of microstrip line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274270.7U CN203839490U (en) | 2014-05-27 | 2014-05-27 | Passive electrically-tunable phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274270.7U CN203839490U (en) | 2014-05-27 | 2014-05-27 | Passive electrically-tunable phase shifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203839490U true CN203839490U (en) | 2014-09-17 |
Family
ID=51517291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420274270.7U Withdrawn - After Issue CN203839490U (en) | 2014-05-27 | 2014-05-27 | Passive electrically-tunable phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203839490U (en) |
-
2014
- 2014-05-27 CN CN201420274270.7U patent/CN203839490U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140917 Effective date of abandoning: 20140922 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |