CN203690505U - GPS/GLONASS combined double-frequency active antenna - Google Patents
GPS/GLONASS combined double-frequency active antenna Download PDFInfo
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- CN203690505U CN203690505U CN201320710016.2U CN201320710016U CN203690505U CN 203690505 U CN203690505 U CN 203690505U CN 201320710016 U CN201320710016 U CN 201320710016U CN 203690505 U CN203690505 U CN 203690505U
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- gps
- glonass
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- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 230000003321 amplification Effects 0.000 claims abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 16
- 230000009977 dual effect Effects 0.000 claims description 15
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model discloses a GPS/GLONASS combined double-frequency active antenna comprising a GPS ceramic antenna, a GLONASS ceramic antenna, a PCB active amplifying board, two feeding points, a cable, and a connector. The GPS ceramic antenna receives GPS electromagnetic waves and converts the GPS electromagnetic waves into current. The GLONASS ceramic antenna receives GLONASS electromagnetic waves and converts the GLONASS electromagnetic waves into current. The current enters the PCB via the feeding points. The PCB performs RLC impedance matching, first-stage amplification, filtering, second-stage amplification, attenuation, and third-stage amplification on inputted signals. The amplified GPS signals and the amplified GLONASS signals enter a combiner. Then, the signals are combined into one signal which is fed back through the cable and enters the connector. The GPS/GLONASS combined double-frequency active antenna is good in electrical performance, simple in structure, low in cost, easy to install, and very suitable for time service of base stations, navigation, and logistics vehicle positioning.
Description
Technical field
The utility model relates to a kind of GPS/GLONASS navigation, time service antenna, relates in particular to a kind of GPS/GLONASS combination dual frequency active antenna.
Background technology
In recent years, along with improving and the support of government policy of Russian navigation system, domestic at it, the upsurge of rising application GLONASS and the dual-purpose navigation time service equipment of GPS on market.Ge great producer releases the navigation of GLONASS and GPS bimodulus and time service equipment one after another, the navigation antenna Ge great producer all kinds of navigation antennas that also release one after another.Also there are many producers to aim at Russia markets, the antenna that releases one after another corresponding module and match in China.But in the time of design, GLONASS and GPS frequency phase-difference are larger, are more difficult if the SF single feed ceramic dielectric that only depends on tradition to use is realized circular polarization.GLONASS and GPS dual-band antenna that existing market also has SF single feed to realize, but its effect is not fine, can only be used in requirement and is not above too high civilian low-end product.In addition, also some producer adopts high frequency plate stacked system to realize GLONASS and GPS dual-band antenna, but its processing cost is higher, and sheet material expense is also higher, also needs additionally to add a mixer in addition and closes road, has so just greatly increased cost.Therefore according to such situation, be necessary to design a kind of low cost, high-performance, is applicable to GPS and GLONASS combination dual frequency active antenna that middle and high end user uses.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of GPS and GLONASS combination dual frequency active antenna are provided, and has gain high, and axial ratio is good, efficiency is high, is with the advantages such as roomy, and price comparison is cheap, easy for installation, be suitable for base station time service, navigation, logistics vehicles location is used.
Technical solution adopted in the utility model is:
A kind of GPS and GLONASS combination dual frequency active antenna, comprise following assembly:
Receive GPS electromagnetic wave and the electromagnetic wave of reception converted to the GPS ceramic antenna of electric current,
Receive GLONASS electromagnetic wave and the electromagnetic wave of reception be converted to the GLONASS ceramic antenna of electric current,
The active amplification board of PCB, contains RLC impedance matching circuit, one-level amplifying circuit, filter circuit, second amplifying circuit, attenuator circuit and three-stage amplifier, also contains the mixer that merges gps signal and GLONASS signal;
Respectively the electric current in GPS ceramic antenna and GLONASS ceramic antenna is imported to the first distributing point and the second distributing point in the active amplification board of PCB;
Connect the connector of external equipment; And
The cable of the active amplification board of connection PCB and connector.
As the further improvement of above technical scheme, described attenuator circuit adopts " π " type attenuation network, and is provided with over-voltage over-current protection circuit in signal output.
As the further improvement of above technical scheme, described mixer is positioned at signal output part.
The beneficial effects of the utility model are:
GLONASS of the present utility model and GPS combination dual frequency active antenna, its gain is high, and axial ratio is good, and efficiency is high, is with roomyly, has stronger electric property, simple in structure, with low cost, easy for installation, is applicable to very much base station time service, navigation, the use of logistics vehicles location.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the front view of the GLONASS that provides of the utility model and GPS combination dual frequency active antenna;
Fig. 2 is the left view of GLONASS and GPS combination dual frequency active antenna in Fig. 1;
Fig. 3 is the bottom view of GLONASS and GPS combination dual frequency active antenna in Fig. 1.
Embodiment
The utility model provides a kind of GLONASS and GPS combination dual frequency active antenna, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, referring to accompanying drawing examples, the utility model is further described.Should be appreciated that concrete case study on implementation described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The structure of GLONASS the utility model being provided in conjunction with Fig. 1, Fig. 2 and Fig. 3 and GPS combination dual frequency active antenna is analyzed, and Fig. 1, Fig. 2 and Fig. 3 are respectively front view, left view and the bottom views that the GLONASS that provides of the utility model and GPS combine dual frequency active antenna.Described antenna is by i.e. the first distributing point and the second distributing point of the active amplification board 3 of ceramic antenna 2, PCB, coaxial cable 4, connector 5, A and the B distributing point 6(of the GLONASS of half-wavelength GPS ceramic antenna 1, half-wavelength) and radome 7 form.
The technology that GLONASS ceramic antenna 2 uses and material are similar with described GPS ceramic antenna 1.
The active amplification board 3 of PCB adopts FR4 that cost performance is higher as substrate, and it is low that RF4 has price, and the characteristic that performance is more stable is widely applied on market.Its amplifying circuit is also that settling signal amplification, signal filtering, signal close the functions such as road on RF4.
In the present embodiment, cable used is coaxial line.
The technical scheme that the utility model technical solution problem adopts is as follows:
GPS ceramic antenna 1 and GLONASS ceramic antenna 2 share a reflecting plate.On GPS and GLONASS ceramic antenna, be respectively arranged with A, two distributing points of B, GPS electromagnetic wave/GLONASS electromagnetic wave converts electric current to by GPS ceramic antenna/GLONASS ceramic antenna, then enters the active amplification board 3 of PCB by distributing point A/B.
The signal input port of the active amplification board 3 of PCB is realized 50 ohms impedance match by RLC impedance matching circuit, carrys out reduce signal decay with this.Gps signal/GLONASS signal enters first order amplifying circuit, and what first order amplifying circuit was selected must be low noise amplifier, selects little noise factor as far as possible, and the gain after one-level is amplified is about 17dB left and right.After signal amplifies, owing to there being many useless interference signals, thus after one-level, need to add filter circuit, through passive bandpass filters filtering.Gps signal/GLONASS signal will enter second level amplifying circuit and amplify after filtering, and now gain amplifier can reach 27dB left and right.Signal needed to enter 3dB signal attenuation network before entering third level amplifying circuit, and now we use " π " type attenuation network as attenuator circuit.Described gps signal after overdamping enters third level amplifying circuit and amplifies, and the gain after amplification has reached 37dB.Gps signal after amplification and GLONASS signal enter mixer, then a synthetic road.
Finally carry out feed by coaxial line 4, the coaxial line other end can be assembled the connectors 5 such as SMA, BNC, TNC.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or convert, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (3)
1. GPS and a GLONASS combination dual frequency active antenna, is characterized in that, described active antenna comprises:
Receive GPS electromagnetic wave and the electromagnetic wave of reception converted to the GPS ceramic antenna of electric current,
Receive GLONASS electromagnetic wave and the electromagnetic wave of reception be converted to the GLONASS ceramic antenna of electric current,
The active amplification board of PCB, contains RLC impedance matching circuit, one-level amplifying circuit, filter circuit, second amplifying circuit, attenuator circuit and three-stage amplifier, also contains the mixer that merges gps signal and GLONASS signal;
Respectively the electric current in GPS ceramic antenna and GLONASS ceramic antenna is imported to the first distributing point and the second distributing point in the active amplification board of PCB;
Connect the connector of external equipment; And
The cable of the active amplification board of connection PCB and connector.
2. GPS according to claim 1 and GLONASS combination dual frequency active antenna, is characterized in that, described attenuator circuit adopts " π " type attenuation network, and is provided with over-voltage over-current protection circuit in signal output.
3. GPS according to claim 1 and GLONASS combination dual frequency active antenna, is characterized in that, described mixer is positioned at signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710016.2U CN203690505U (en) | 2013-11-12 | 2013-11-12 | GPS/GLONASS combined double-frequency active antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710016.2U CN203690505U (en) | 2013-11-12 | 2013-11-12 | GPS/GLONASS combined double-frequency active antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203690505U true CN203690505U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710016.2U Expired - Fee Related CN203690505U (en) | 2013-11-12 | 2013-11-12 | GPS/GLONASS combined double-frequency active antenna |
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| Country | Link |
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| CN (1) | CN203690505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506365A (en) * | 2017-02-01 | 2019-11-26 | 塔莱斯公司 | Basic antenna including planar radiation equipment |
-
2013
- 2013-11-12 CN CN201320710016.2U patent/CN203690505U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506365A (en) * | 2017-02-01 | 2019-11-26 | 塔莱斯公司 | Basic antenna including planar radiation equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518102 Guangdong city of Shenzhen province Baoan District Xixiang Iron Street Gang Road oyster industry Industrial Park 1 building, 3 floor Patentee after: SHENZHEN VLG WIRELESS TECHNOLOGY CO., LTD. Address before: 518102 Guangdong city of Shenzhen province Baoan District Xixiang Iron Street Gang Road oyster industry Industrial Park 1 building, 3 floor Patentee before: Shenzhen VLG Wireless Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20201112 |