CN103746755A - Calibration network of TD intelligent antenna - Google Patents
Calibration network of TD intelligent antenna Download PDFInfo
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- CN103746755A CN103746755A CN201310740147.XA CN201310740147A CN103746755A CN 103746755 A CN103746755 A CN 103746755A CN 201310740147 A CN201310740147 A CN 201310740147A CN 103746755 A CN103746755 A CN 103746755A
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- 239000002184 metal Substances 0.000 claims abstract description 52
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001568 sexual effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000010295 mobile communication Methods 0.000 description 1
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Abstract
The invention is applicable in the technical field of communication, and provides a calibration network of TD intelligent antenna, which comprises a metal fixed plate and a calibration network circuit board fixed on the metal fixed plate, wherein the calibration network circuit board is connected with a equant Wilkinson splitter, the end of the equant Wilkinson splitter is connected with a plurality of microstrip directional couplers to couple signal from each intelligent antenna channel, the external of the microstrip directional coupler is provided with a metal shield box, the metal fixed plate is provided with a metal cover, and a metal cavity containing the metal shield box and the calibration network circuit board is formed between the metal cover and the metal fixed plate The calibration network of TD intelligent antenna through the calibration network is closed, so as to shield external signal interference.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of calibration network of TD smart antenna.
Background technology
In recent years, mobile communication technology development, number of users also presents a rapidly rising trend, China Mobile carries out the construction of TD-LTE base station comprehensively in this year, CHINAUNICOM and China Telecom are also carrying out investigation and the test of TD-LTE at present, also the TD-LTE base station that just means following meeting enormous amount occurs, thereupon just occur that site resource is more and more nervous, in order to save the manpower and materials cost bringing thus, TD-SCDMA and TD-LTE shared antenna product are also just more and more, and antenna miniaturization has also just become inexorable trend simultaneously.Calibration network, as parts of TD smart antenna, plays the key effect of communication system equipment and antenna, only has calibration network performance to reach the superperformance of expection, and smart antenna could be realized dynamic beam figuration function, the sharpest edges of performance smart antenna.
The many employings of calibration network of current smart antenna are open, structure is simpler, install also simple, but there is poor anti jamming capability in it, the shortcoming such as take up room larger, antijamming capability is strong, the features such as freedom of arranging owing to having for enclosed type calibration network, the scope of application is also more and more wider, but because the directional coupler coupled signal intensity of calibration network is less, calibration mouthful signal strength signal intensity is larger, radiation signal and the mutual cross talk effect of each channel signal of calibration mouth are more obvious, caused calibration network amplitude-phase consistency to worsen rapidly, and debugging difficulty are larger.
In summary, obviously there is inconvenience and defect in prior art in actual use, so be necessary to be improved.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of calibration network of TD smart antenna as solution with low cost, stable performance, adopt more and more general modular antenna design method, the amplitude-phase consistency that guarantees TD-SCDMA and TD-LTE frequency range internal calibration network has the good linearity, both solve the drawback of sealing sexual type pseudo-crystalline lattice, and can realize again the requirements at the higher level of antenna miniaturization and calibration accuracy.
A kind of calibration network of TD smart antenna, include: metal fixed head and be fixed on the calibration network wiring board on described metal fixed head, on described calibration network wiring board, be connected with decile Wilkinson power divider, described decile Wilkinson power divider end is connected with from multiple microstrip directional couplers of the each passage coupled signal of described smart antenna, outside at described microstrip directional coupler is provided with metal shielding box, described metal fixed head is provided with metal cover board, between described metal cover board and metal fixed head, form the wire chamber of accommodating described metal shielding box and described calibration network wiring board.
According to the calibration network of TD smart antenna of the present invention, a described metal shielding box is fixed respectively on the top of every two described microstrip directional couplers of described calibration network wiring board.
According to the calibration network of TD smart antenna of the present invention, each input port of described calibration network is connected to each access port of described TD smart antenna by cable; The calibration port of described calibration network is connected to the calibration port of described TD smart antenna by cable.
According to the calibration network of TD smart antenna of the present invention, the transmission line in described metal shielding box on described calibration network wiring board is microstripline.
According to the calibration network of TD smart antenna of the present invention, described metal shielding box dual-side equates with the described microstripline distance of described calibration network wiring board.
According to the calibration network of TD smart antenna of the present invention, the described cable of the described access port of described input port and described TD smart antenna is coaxial cable.
According to the calibration network of TD smart antenna of the present invention, described calibration network is the enclosed type calibration network of TD smart antenna.
According to the calibration network of TD smart antenna of the present invention, the calibration network of described TD smart antenna is applicable to TD-SCDMA frequency range and TD-LTE frequency range.
According to the calibration network of TD smart antenna of the present invention, passage is electrically connected on feeding network described in each of described smart antenna.
According to the calibration network of TD smart antenna of the present invention, described decile Wilkinson power divider is one point of eight Wilkinson power divider
The present invention is by being closed calibration network, play the effect that shielding external signal is disturbed, above every two microstrip directional couplers of calibration network, add a little can, by these two directional coupler sealings, solve the problem that calibration network internal signal is crosstalked that prevents simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the calibration network of TD smart antenna of the present invention;
Fig. 2 is the vertical view of the calibration network internal structure of TD smart antenna of the present invention;
Fig. 3 is the calibration network internal structure view afterwards of TD smart antenna of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As early stage version and the evolution version mobile communcations system of TDD standard, TD-SCDMA and TD-LTE, by long-term co-existence, relate to the built-in mixer antenna of colocation site of TDD standard itself equally.In order to improve the width phase linearity of TD-SCDMA and TD-LTE frequency range internal calibration network, solve the drawback of sealing sexual type pseudo-crystalline lattice, can guarantee that again smart antenna conforms with the requirements at the higher level of smart antenna miniaturization and calibration accuracy, the invention provides solution.
The calibration network of a kind of TD smart antenna of the present invention, include: metal fixed head and be fixed on the calibration network wiring board on described metal fixed head, on described calibration network wiring board, be connected with decile Wilkinson power divider, described decile Wilkinson power divider end is connected with from multiple microstrip directional couplers of the each passage coupled signal of described smart antenna, outside at described microstrip directional coupler is provided with metal shielding box, described metal fixed head is provided with metal cover board, between described metal cover board and metal fixed head, form the wire chamber of accommodating described metal shielding box and described calibration network wiring board.
A specific embodiment of the present invention as shown in Figure 1 to Figure 3, in the present embodiment, adopt one point of eight Wilkinson power divider, it is upper that calibration network wiring board C is fixed on metal fixed head D, every two microstrip directional coupler tops of calibration network wiring board C fixing metal shielding box B1, B2, B3, B4 respectively.At the metal cover board A and airtight connection of metal fixed head D on metal shielding box B1, B2, B3, B4 and calibration network wiring board C top.According to diagram, the described wire chamber that the present invention arranges at microstrip directional coupler place plays preliminary shielding action, and metal shielding box B1, B2, B3, B4 and metal cover board A fully fix, and the signal of isolation and all the other microstrip directional couplers, avoids crosstalking.
Further, each input port 1,2,3,4,5,6,7,8 of described calibration network is connected to each access port of described TD smart antenna by cable, the calibration port CAL of described calibration network is connected to the calibration port of described TD smart antenna by cable as shown in fig. 1.Transmission line on metal shielding box B1, B2, B3, B4 internal calibration network line plate C is microstripline.
Be more preferably, metal shielding box B1, B2, B3, B4 dual-side equate with the microstripline distance of calibration network wiring board C.In addition, it is worthy of note, described input port 1,2,3,4,5,6,7,8 to the cable of the access port (not shown) of smart antenna is coaxial cable, but can substitute with the transmission line that other meet performance requirement while specifically implementing.
Described calibration network is the enclosed type calibration network of TD smart antenna, and its core is, at the additional wire chamber in the outside of described calibration network, metal shielding box B1, B2, B3, B4 and metal cover board A, to consist of.It is upper that calibration network wiring board C is fixed on metal fixed head D, every two microstrip directional coupler part tops of calibration network wiring board C fixing metal shielding box B1, B2, B3, B4 respectively.
The calibration network of described TD smart antenna is applicable to TD-SCDMA frequency range and TD-LTE frequency range, compare prior art, improved isolation each other, can be applicable to TD-SCDMA frequency range and TD-LTE frequency range, at TD-SCDMA frequency range and TD-LTE, standing-wave ratio is less than 1.4, the amplitude-phase consistency of the each access port of antenna and calibration port CAL is satisfied 0.7dB and 5 degree of being less than respectively, because TD-SCDNIA and TD-LTE are used frequency range different, so the wavelength of TD-SCDMA and TD-LTE is different, thereby can select two working frequency range without replacing described TD smart antenna, can save equipment purchase cost.
Described in each of described smart antenna, passage is electrically connected on feeding network, this calibration network adopts one point of eight Wilkinson power divider of a HF link plate form, its end adopts 8 described microstrip directional couplers from the each passage coupled signal of antenna, so that the amplitude of each passage and phase information described in reading antenna, system is carried out dynamic beam figuration according to obtained width phase information.
In Fig. 1,9,10,11,12,13,14,15,16 are connected to respectively on the feeding network of antenna 8 passages.The input port 1,2,3,4,5,6,7,8 of each calibration network is transferred to CAL calibration network port by boundling, width phase information sampled data can be transferred in calibration system and carry out analyzing and processing, guarantees the calibration stability of smart antenna.
In sum, the present invention is based on TD-SCDMA and TD-LTE smart antenna enclosed type calibration network, improvement internal signal transmission, cost is low, amplitude-phase consistency is excellent and environmental stability advantages of higher, can help TD-SCDMA, TD-LTE antenna use realize broadband.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the calibration network of a TD smart antenna, it is characterized in that, include: metal fixed head and be fixed on the calibration network wiring board on described metal fixed head, on described calibration network wiring board, be connected with decile Wilkinson power divider, described decile Wilkinson power divider end is connected with from multiple microstrip directional couplers of the each passage coupled signal of described smart antenna, outside at described microstrip directional coupler is provided with metal shielding box, described metal fixed head is provided with metal cover board, between described metal cover board and metal fixed head, form the wire chamber of accommodating described metal shielding box and described calibration network wiring board.
2. the calibration network of TD smart antenna according to claim 1, is characterized in that, a described metal shielding box is fixed respectively on the top of every two described microstrip directional couplers of described calibration network wiring board.
3. the calibration network of TD smart antenna according to claim 2, is characterized in that, each input port of described calibration network is connected to each access port of described TD smart antenna by cable; The calibration port of described calibration network is connected to the calibration port of described TD smart antenna by cable.
4. the calibration network of TD smart antenna according to claim 2, is characterized in that, the transmission line in described metal shielding box on described calibration network wiring board is microstripline.
5. the calibration network of TD smart antenna according to claim 4, is characterized in that, described metal shielding box dual-side equates with the described microstripline distance of described calibration network wiring board.
6. the calibration network of TD smart antenna according to claim 3, is characterized in that, the described cable of the described access port of described input port and described TD smart antenna is coaxial cable.
7. the calibration network of TD smart antenna according to claim 1, is characterized in that, described calibration network is the enclosed type calibration network of TD smart antenna.
8. the calibration network of TD smart antenna according to claim 1, is characterized in that, the calibration network of described TD smart antenna is applicable to TD-SCDMA frequency range and TD-LTE frequency range.
9. the calibration network of TD smart antenna according to claim 1, is characterized in that, passage is electrically connected on feeding network described in each of described smart antenna.
10. according to the calibration network of TD smart antenna described in claim 1～9 any one, it is characterized in that, described decile Wilkinson power divider is one point of eight Wilkinson power divider.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310740147.XA CN103746755B (en) | 2013-12-27 | 2013-12-27 | The calibration network of TD smart antenna |
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| CN201310740147.XA CN103746755B (en) | 2013-12-27 | 2013-12-27 | The calibration network of TD smart antenna |
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| CN103746755B CN103746755B (en) | 2016-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049133A (en) * | 2015-08-06 | 2015-11-11 | 京信通信技术(广州)有限公司 | Smart antenna calibrating device |
| CN110943293A (en) * | 2019-11-19 | 2020-03-31 | 京信通信技术(广州)有限公司 | Feed network device and antenna |
| WO2021031564A1 (en) * | 2019-08-20 | 2021-02-25 | 深圳市深大唯同科技有限公司 | Calibration network device and antenna |
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| CN202268462U (en) * | 2011-09-30 | 2012-06-06 | 摩比天线技术（深圳）有限公司 | TD smart antenna and built-in micro-strip combiner thereof |
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2013
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| CN105049133A (en) * | 2015-08-06 | 2015-11-11 | 京信通信技术(广州)有限公司 | Smart antenna calibrating device |
| WO2021031564A1 (en) * | 2019-08-20 | 2021-02-25 | 深圳市深大唯同科技有限公司 | Calibration network device and antenna |
| CN110943293A (en) * | 2019-11-19 | 2020-03-31 | 京信通信技术(广州)有限公司 | Feed network device and antenna |
| CN110943293B (en) * | 2019-11-19 | 2021-05-28 | 京信通信技术(广州)有限公司 | Feed network device and antenna |
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| CN103746755B (en) | 2016-08-17 |
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Effective date of registration: 20190219 Address after: 518000 Guangming Street, Guangming New District, Shenzhen City, Guangdong Province, Genyu Road, Mobi Science and Technology Building Co-patentee after: Mobile Antenna Technologies (Shenzhen) Co., Ltd. Patentee after: Mobi Technology (Shenzhen) Co., Ltd. Co-patentee after: Mobile Antenna Technologies (Jian) Co., Ltd. Co-patentee after: MOBI Technologies (Xi'an) Co., Ltd. Address before: 518057 Mobi Building, No. 7, Langshan Road, North District of Nanshan High-tech Industrial Park, Shenzhen, Guangdong Province Co-patentee before: Mobile Antenna Technologies (Jian) Co., Ltd. Patentee before: Mobile Antenna Technologies (Shenzhen) Co., Ltd. Co-patentee before: MOBI Technologies (Xi'an) Co., Ltd. |