CN208337568U - A kind of adaptive R-T unit of Beidou active antenna - Google Patents
A kind of adaptive R-T unit of Beidou active antenna Download PDFInfo
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- CN208337568U CN208337568U CN201820625473.4U CN201820625473U CN208337568U CN 208337568 U CN208337568 U CN 208337568U CN 201820625473 U CN201820625473 U CN 201820625473U CN 208337568 U CN208337568 U CN 208337568U
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- beidou
- circuit
- input terminal
- combiner
- short message
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Abstract
The utility model relates to a kind of adaptive R-T units of Beidou active antenna, comprising: a passive antenna, a Big Dipper short message transmission link, a Big Dipper short message receives link, a Beidou II B1/GPS L1 frequency range passive location link and a hardware interface circuit；The Big Dipper short message transmission link, the Big Dipper short message receives link, Beidou II B1/GPS L1 frequency range passive location link one end are connected with the passive antenna respectively, and the other end is connected with the hardware interface circuit respectively.The utility model proposes a kind of adaptive R-T unit of Beidou active antenna, have the advantages of simple structure and easy realization.
Description
Technical field
The utility model relates to satellite navigation terminal technical field, especially a kind of Beidou active antenna adaptively receives and dispatches dress
It sets.
Background technique
Satellite navigation system is quickly grown, and is played an important role in national security, economic construction and daily life, extensively
It is general to be applied to the fields such as military affairs, traffic, mapping, safety monitoring.And antenna is as indispensable one of satellite navigation, communication
Point, performance indicator, mounting means etc. is all to influence overall system performance, reliability, the key component of easy-to-use degree.And it is active
An one's share of expenses for a joint undertaking of the antenna as antenna family compares traditional passive antenna, have terrace require it is low, mounting distance is required it is small, just
In advantages such as Fast Installations.User can connect the good active antenna of outdoor installation by the RF cable of different length, material
Realize the repertoire of satellite navigation system, and the performance indicators such as its sensitivity, transmission power are unaffected.Currently, industry
Inside largely use or passive antenna system, antenna performance change with cable and are changed, and reliability, ease for use are poor.
Summary of the invention
The purpose of this utility model is to provide a kind of adaptive R-T units of Beidou active antenna, to overcome the prior art
Present in defect.
To achieve the above object, the technical solution of the utility model is: a kind of adaptive R-T unit of Beidou active antenna,
It include: a passive antenna, a Big Dipper short message transmission link, a Big Dipper short message receives link, a Beidou II B1/GPS L1
Frequency range passive location link and a hardware interface circuit；The Big Dipper short message transmission link, the Big Dipper short message receive
Link, Beidou II B1/GPS L1 frequency range passive location link one end are connected with the passive antenna respectively, the other end point
It is not connected with the hardware interface circuit.
In an embodiment of the utility model, the hardware interface circuit includes one for integrating Beidou RDSS system L frequency
First centimeter of combiner of point and Beidou II B1/GPS L1 frequency point, one provide Beidou RDSS system L frequency point input signal
The duplexer of second centimeter of combiner and an offer 2.5GHz frequency range and 1.6GHz frequency range input signal；The duplexer with
One physical interface is connected；First centimeter of combiner is connected with the duplexer；Second centimeter of combiner and described the
One centimeter of combiner is connected；The duplexer is also connected with the Big Dipper short message receives link；First centimeter of combiner
Also with the Beidou II B1/GPS L1 frequency range passive location link；Second centimeter of combiner also with the short report of the Beidou
Literary transmission link.
In an embodiment of the utility model, the Big Dipper short message transmission link include: voltage-controlled amplifier VGA circuit,
Controller circuitry, detector circuit, the first BPF filter circuit and power amplifier circuit；The detector circuit it is defeated
The input terminal for entering end and the first BPF filter circuit is connected with described second centimeter of combiner one end；The detection
The output end of device circuit is connected with the input terminal of the control circuit；The output end of the first BPF filter circuit with it is described
The input terminal of voltage-controlled amplifier VGA circuit is connected；The control of the output end of the control circuit and the voltage-controlled amplifier VGA circuit
End processed is connected；The output end of the voltage-controlled amplifier VGA circuit is connected with the power amplifier circuit input terminal.
In an embodiment of the utility model, the Big Dipper short message receives link includes: the 2nd BPF filter, third
BPF filter, the first low-noise amplifier LNA and automatic gain control amplifier AGC；The input of the 2nd BPF filter
End is connected with the passive antenna, and output end is connected with the input terminal of the first low-noise amplifier LNA；First low noise
The output end of acoustic amplifier LNA is connected with the input terminal of the 3rd BPF filter；The output end of the 3rd BPF filter
It is connected with the input terminal of the resistance attenuator AGC；The output end of the resistance attenuator AGC and first centimeter of combiner
It is connected.
In an embodiment of the utility model, the Beidou II B1/GPS L1 frequency range passive location link includes: the 4th
BPF filter, the 5th BPF filter, the second low-noise amplifier LNA and trapper；The input of the 4th BPF filter
End is connected with the passive antenna, and output end is connected with the input terminal of the second low-noise amplifier LNA；Second low noise
The output end of acoustic amplifier LNA is connected with the trapper input terminal；The output end of the trapper and the 5th BPF are filtered
The input terminal of device is connected；The output end of the 5th BPF filter is connected with first centimeter of combiner.
It in an embodiment of the utility model, further include the DC feedback being connected once physical interface with hardware interface circuit
Circuit；The direct current tie line includes the inductance being sequentially connected, a DC/DC converter and LDO converter.
Compared to the prior art, the utility model has the following beneficial effects: the utility model relates to a kind of Beidou is active
Antenna self-adaptive R-T unit can be automatic to adapt under the connection of single radio-frequency cable by cooperating with corresponding Beidou module
Decay caused by different radio frequency length of cable and material in a certain range, and does not change antenna transmission power.The device can be used
In the passive location of the communication of Beidou generation short message, active location and Beidou II and GPS.To meet part Beidou equipment
Product demand improves the limitation of antenna mounting distance, improves Product's Ease of Use.Various pieces are integrated in one piece of hardware circuit board,
The miniaturization of product can be thus achieved by the isolation of cavity and integrated level advantageously ensures that product radio frequency performance again.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the adaptive R-T unit of Beidou active antenna in the utility model.
Fig. 2 is that Big Dipper short message emits link schematic internal view in the utility model.
Fig. 3 is Big Dipper short message receives link schematic diagram of internal structure in the utility model.
Fig. 4 is Beidou II B1/GPS L1 band link structural schematic diagram in the utility model.
Fig. 5 is the circuit diagram of hardware interface circuit in the utility model.
Fig. 6 is the circuit diagram of Big Dipper short message transmission link in the utility model.
Fig. 7 is the circuit diagram in the utility model for Big Dipper short message receives link.
Fig. 8 is the circuit diagram of Beidou II B1/GPS L1 frequency range passive location link in the utility model.
Specific embodiment
With reference to the accompanying drawing and existing software, the technical solution of the utility model is specifically described.In the explanation
Existing software involved in the process is not the object that the utility model is protected, and the utility model only protects the knot of the device
Structure and connection relationship.
The utility model provides a kind of adaptive R-T unit of Beidou active antenna, as shown in Fig. 1 ~ Fig. 4, comprising: a nothing
Source antenna, a Big Dipper short message transmission link, a Big Dipper short message receives link, a Beidou II B1/GPS L1 frequency range are passive
Position link and a hardware interface circuit；Big Dipper short message transmission link, Big Dipper short message receives link, Beidou II B1/
GPS L1 frequency range passive location link one end is connected with passive antenna respectively, and the other end is connected with hardware interface circuit respectively.
Further, in embodiment, hardware interface circuit includes one for integrating Beidou RDSS system L frequency point and Beidou
Second centimeter of first centimeter of combiner of two generation B1/GPS L1 frequency points, an offer Beidou RDSS system L frequency point input signal
The duplexer of combiner and an offer 2.5GHz frequency range and 1.6GHz frequency range input signal；The duplexer connects with a physics
Mouth is connected；First centimeter of combiner is connected with the duplexer；Second centimeter of combiner and described first centimeter conjunction
Road device is connected；The duplexer is also connected with the Big Dipper short message receives link；First centimeter of combiner also with it is described
Beidou II B1/GPS L1 frequency range passive location link；Second centimeter of combiner also with the Big Dipper short message send chain
Road.In the present embodiment, duplexer work is in 2.5GHz frequency range and 1.6GHz frequency range, and wherein 2.5GHz frequency range includes Beidou
RDSS system S frequency point, 1.6GHz frequency range include Beidou RDSS system L frequency point, Beidou II B1/GPS L1 frequency point.Two centimetres
Combiner works in 1.6GHz frequency range.Wherein, first centimeter of combiner is for integrating Beidou RDSS system L frequency point and Beidou II
B1/GPS L1 frequency point；Second centimeter of combiner is for providing voltage-controlled amplifier (VGA) and the detection of Beidou RDSS system L frequency point
The input of device circuit.As shown in figure 5, being the circuit diagram of hardware interface circuit, respectively correspond from left to right are as follows: physical interface SMA,
Duplexer, first centimeter of combiner and second centimeter of combiner.
Further, in embodiment, Big Dipper short message transmission link includes: voltage-controlled amplifier VGA circuit, control electricity
Road, detector circuit, the first BPF filter circuit and power amplifier circuit PA；The input terminal of detector circuit and
The input terminal of one BPF filter circuit is connected with second centimeter of combiner one end；The output end and control electricity of detector circuit
The input terminal on road is connected；The output end of first BPF filter circuit is connected with the input terminal of voltage-controlled amplifier VGA circuit；Control
The output end of circuit is connected with the control terminal of voltage-controlled amplifier VGA circuit；The output end of voltage-controlled amplifier VGA circuit is put with power
Big device circuit input end is connected.By the adjustment in controling circuit structure, adjust automatically amplifier gain amplifier may be implemented.From
And it realizes and adapts to the signal as caused by RF cable material and length automatically in transmitting signal frequency point (1615.68MHz)
The differential declines degree of intensity, to realize that the radiation intensity of antenna is constant.As shown in fig. 6, being Big Dipper short message transmission link
Circuit diagram.Upper part link pair is answered are as follows: the first BPF filter circuit, voltage-controlled amplifier VGA circuit and power amplifier electricity
Road PA；Lower part link pair is answered are as follows: detector circuit and control circuit.
Further, in embodiment, Big Dipper short message receives link includes: the 2nd BPF filter, the 3rd BPF filtering
Device, the first low-noise amplifier LNA and automatic gain control amplifier AGC；The input terminal and passive antenna of 2nd BPF filter
It is connected, output end is connected with the input terminal of the first low-noise amplifier LNA；The output end of first low-noise amplifier LNA and
The input terminal of three BPF filters is connected；The output end of 3rd BPF filter is connected with the input terminal of resistance attenuator AGC；Resistance
The output end of attenuator AGC is connected with first centimeter of combiner.In the present embodiment, first order filter using passband
Filter with low insertion loss bandpass filter of the frequency point in 2491.75MHz, anti-launching frequency 1615.68MHz saturation；First order amplifier is adopted
It is the low-noise amplifier LNA of low-noise factor, low-power consumption, second level amplifier uses automatic gain control amplifier
AGC adjustment signal gain amplifier intensity, anti-stop signal saturation.As shown in fig. 7, be the circuit diagram of Big Dipper short message receives link,
It is corresponding are as follows: the 2nd BPF filter, the first low-noise amplifier LNA and the 3rd BPF filter.In the present embodiment, automatic to increase
Benefit control amplifier AGC is using the upper part of links and lower part of links in Fig. 6.
Further, in embodiment, Beidou II B1/GPS L1 frequency range passive location link includes: the 4th BPF filtering
Device, the 5th BPF filter, the second low-noise amplifier LNA and trapper；The input terminal and passive day of 4th BPF filter
Line is connected, and output end is connected with the input terminal of the second low-noise amplifier LNA；The output end of second low-noise amplifier LNA with
Trapper input terminal is connected；The output end of trapper is connected with the input terminal of the 5th BPF filter；5th BPF filter it is defeated
Outlet is connected with first centimeter of combiner.In the present embodiment, Beidou II B1/GPS L1 frequency range passive location chain path built-in
The LNA(low-noise amplifier of Beidou II B1/GPS L1 frequency range), bandpass filter and trapper, realize and Beidou II believed
Number reception and amplification, while rejective amplifier is in the saturation of launching frequency.Bandpass filter is anti-for Beidou B1/GPS L1 frequency point
Interference filter, for the inhibition to Beidou RDSS system L frequency point signal.As shown in figure 8, for Beidou II B1/GPS L1 frequency
The circuit diagram of section passive location link, it is corresponding are as follows: the 4th BPF filter, the second low-noise amplifier LNA, trapper and the
Five BPF filters.
It further, in embodiment, further include the direct current feedback being connected once physical interface (SMA) with hardware interface circuit
Circuit；Direct current tie line includes the inductance being sequentially connected, a DC/DC converter and LDO converter.
Further, in embodiment, hardware interface circuit is connected to physical interface, direct current feedback by a RF cable
Electric part takes electricity by an air core inductor from physical interface, and is respectively to fill by internal DC/DC power supply and LDO power supply
The other parts power supply set.Then, radiofrequency signal is separately connected north by duplexer in hardware interface circuit and centimetre device
Struggle against short message transmission link, Big Dipper short message receives link and Beidou II B1/GPS L1 frequency range passive location link.
Further, in embodiment, as shown in Figure 1, radio signal transmission direction is as shown in Figure 1, the Beidou received
Short message and Beidou II B1/GPS L1 signal are respectively transmitted to Big Dipper short message receives link and north by passive antenna
Struggle against two generation B1/GPS L1 frequency range passive location links.It is respectively transmitted to hardware interface circuit again and carries out signal integration, after conversion
Signal is transferred to next stage by physical interface.The Big Dipper short message information for needing to send, passes through physical interface and hardware interface
The integration of circuit is transferred to Big Dipper short message transmission link, is transferred to passive day again by the self-adaptive processing of its signal strength
Line reaches the desired effect for not changing antenna radiated power.
It is the preferred embodiment of the utility model above, it is all to change according to made by technical solutions of the utility model, it is produced
Function without departing from technical solutions of the utility model range when, belong to the protection scope of the utility model.
Claims (6)
1. a kind of adaptive R-T unit of Beidou active antenna characterized by comprising a passive antenna, a Big Dipper short message
Transmission link, a Big Dipper short message receives link, a Beidou II B1/GPS L1 frequency range passive location link and a hardware connect
Mouth circuit；The Big Dipper short message transmission link, the Big Dipper short message receives link, Beidou II B1/GPS L1 frequency
Section passive location link one end is connected with the passive antenna respectively, and the other end is connected with the hardware interface circuit respectively.
2. a kind of adaptive R-T unit of Beidou active antenna according to claim 1, which is characterized in that the hardware connects
Mouth circuit includes one public for integrating the first of Beidou RDSS system L frequency point and Beidou II B1/GPS L1 frequency point input signal
Combiner device, one provide the second centimeter of combiner and an offer 2.5GHz frequency range of Beidou RDSS system L frequency point input signal
And the duplexer of 1.6GHz frequency range input signal；The duplexer is connected with a physical interface；First centimeter of combiner
It is connected with the duplexer；Second centimeter of combiner is connected with first centimeter of combiner；The duplexer also with institute
Big Dipper short message receives link is stated to be connected；First centimeter of combiner is also passive with the Beidou II B1/GPS L1 frequency range
Position link；Second centimeter of combiner also with the Big Dipper short message transmission link.
3. a kind of adaptive R-T unit of Beidou active antenna according to claim 2, which is characterized in that the Beidou is short
Message transmission link include: voltage-controlled amplifier VGA circuit, control circuit, detector circuit, the first BPF filter circuit and
Power amplifier circuit；The input terminal of the input terminal of the detector circuit and the first BPF filter circuit is and institute
Second centimeter of combiner one end is stated to be connected；The output end of the detector circuit is connected with the input terminal of the control circuit；Institute
The output end for stating the first BPF filter circuit is connected with the input terminal of the voltage-controlled amplifier VGA circuit；The control circuit
Output end is connected with the control terminal of the voltage-controlled amplifier VGA circuit；The output end of the voltage-controlled amplifier VGA circuit with it is described
Power amplifier circuit input terminal is connected.
4. a kind of adaptive R-T unit of Beidou active antenna according to claim 2, which is characterized in that the Beidou is short
Message receives link includes: the 2nd BPF filter, the 3rd BPF filter, the first low-noise amplifier LNA and automatic gain control
Amplifier AGC processed；The input terminal of the 2nd BPF filter is connected with the passive antenna, output end and first low noise
The input terminal of acoustic amplifier LNA is connected；The output end of the first low-noise amplifier LNA and the 3rd BPF filter
Input terminal is connected；The output end of the 3rd BPF filter is connected with the input terminal of the automatic gain control amplifier AGC；
The output end of the automatic gain control amplifier AGC is connected with first centimeter of combiner.
5. a kind of adaptive R-T unit of Beidou active antenna according to claim 2, which is characterized in that the Beidou two
It include: the 4th BPF filter, the 5th BPF filter, the second low-noise amplifier for B1/GPS L1 frequency range passive location link
LNA and trapper；The input terminal of the 4th BPF filter is connected with the passive antenna, and output end is low with described second
The input terminal of noise amplifier LNA is connected；The output end of the second low-noise amplifier LNA and the trapper input terminal phase
Even；The output end of the trapper is connected with the input terminal of the 5th BPF filter；The output of the 5th BPF filter
End is connected with first centimeter of combiner.
6. a kind of adaptive R-T unit of Beidou active antenna according to claim 1, which is characterized in that further include once
The direct current tie line that physical interface is connected with hardware interface circuit；The direct current tie line includes the electricity being sequentially connected
Sense, a DC/DC converter and LDO converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625473.4U CN208337568U (en) | 2018-04-28 | 2018-04-28 | A kind of adaptive R-T unit of Beidou active antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625473.4U CN208337568U (en) | 2018-04-28 | 2018-04-28 | A kind of adaptive R-T unit of Beidou active antenna |
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| Publication Number | Publication Date |
|---|---|
| CN208337568U true CN208337568U (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820625473.4U Active CN208337568U (en) | 2018-04-28 | 2018-04-28 | A kind of adaptive R-T unit of Beidou active antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988918A (en) * | 2019-12-25 | 2020-04-10 | 中电科航空电子有限公司 | Airborne position tracking equipment and positioning method |
| CN114171914A (en) * | 2022-02-11 | 2022-03-11 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
-
2018
- 2018-04-28 CN CN201820625473.4U patent/CN208337568U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110988918A (en) * | 2019-12-25 | 2020-04-10 | 中电科航空电子有限公司 | Airborne position tracking equipment and positioning method |
| CN114171914A (en) * | 2022-02-11 | 2022-03-11 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
| CN114171914B (en) * | 2022-02-11 | 2022-05-24 | 河北晶禾电子技术股份有限公司 | Beidou antenna |
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