CN206022618U - A kind of vehicle GPS and 4G antennas merge coaxial feeder device - Google Patents
A kind of vehicle GPS and 4G antennas merge coaxial feeder device Download PDFInfo
- Publication number
- CN206022618U CN206022618U CN201621025786.3U CN201621025786U CN206022618U CN 206022618 U CN206022618 U CN 206022618U CN 201621025786 U CN201621025786 U CN 201621025786U CN 206022618 U CN206022618 U CN 206022618U
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- block capacitor
- coaxial feeder
- antennas
- band
- filter
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Abstract
A kind of vehicle GPS and 4G antennas merge coaxial feeder device, including coaxial feeder, band elimination filter, band filter, the first block capacitor, the second block capacitor, the 3rd block capacitor, radio frequency choke coil, RF adapters；Band elimination filter one end connects 4G antennas, and the other end connects one end of the first block capacitor, and the other end of the first block capacitor is connected with coaxial feeder；Band filter one end connects the second block capacitor, and the other end of the second block capacitor is connected with gps antenna, and the band filter other end connects one end of the 3rd block capacitor, and the other end of the 3rd block capacitor is connected with coaxial feeder；Direct current branch is bridged between gps antenna and coaxial feeder, and radio frequency choke inductance is provided with direct current branch；The coaxial feeder that vehicle-mounted 4G antennas and gps antenna are required for is incorporated into one, reduces feeder quantity, is easy to cable to arrange in the car, reduces the radio frequency connector of corresponding antenna end and equipment end.
Description
Technical field
This utility model is related to a kind of vehicle GPS and 4G antennas merge coaxial feeder device.
Background technology
The quantity of car antenna is more and more now, such as 4G main antennas, 4G slave antennas, gps antenna, BDS antennas, AM/FM
Antenna, WiFi antennas, RKE antenna etc., these antenna are concentrated in an antenna house, but these antenna is required for the radio frequency of oneself
Coaxial feeder, so can bring about some problems, such as, if radio-frequency (RF) coaxial feeder line is too many, can cause in-car difficult wiring, separately
Outer cost also increases, especially external antenna, and as feeder line is longer, cost increases more.
Utility model content
The purpose of this utility model seeks to provide a kind of vehicle GPS and 4G antennas merge coaxial feeder device.
This utility model is adopted the following technical scheme that：
A kind of vehicle GPS and 4G antennas merge coaxial feeder device, including coaxial feeder, band elimination filter, bandpass filtering
Device, the first block capacitor, the second block capacitor, the 3rd block capacitor, radio frequency choke coil, RF adapters；
Wherein, described band elimination filter one end connects 4G antennas, and the other end connects one end of first block capacitor,
The other end of first block capacitor is connected with the coaxial feeder, and this connection scheme can prevent gps antenna from receiving
The 1575.42MHz frequency band signals for arriving enter 4G antennas, as gps antenna contains low-noise amplifier, need to power up, so with
Axis with transmitting galvanic function, the effect of first block capacitor be in order to do not make the band elimination filter because
The power supply to GPS amplifiers is affected for direct-current short circuit；
Described band filter one end connects second block capacitor, the other end of second block capacitor with
Gps antenna connects, and the band filter other end connects one end of the 3rd block capacitor, the 3rd capacitance
The other end of device is connected with the coaxial feeder, and the effect of the band filter is to prevent 4G signals from entering gps antenna
Side, the effect of second block capacitor and threeth block capacitor similar with the effect of first block capacitor
It is to not make the band filter affect the power supply to low-noise amplifier in gps antenna because of direct-current short circuit；
In order to ensure the power supply of low-noise amplifier in gps antenna, need in gps antenna and the span of the coaxial feeder
Direct current branch is connect, and in order to prevent radiofrequency signal from gps antenna being entered through direct current branch, is provided with the radio frequency in direct current branch
Choke induction；
Preferably, the band elimination filter is upper using distribution in two-sided FR4 printed circuit board (PCB)s (PCB) that thickness is 1 millimeter
Parameter microstrip circuit is realizing；
Further, the band elimination filter is made up of microstrip line, minor matters one and minor matters two, and the impedance of microstrip line is 50 Europe
Nurse, 2 millimeters of live width；The width of minor matters 1 is 1 millimeter, 7 millimeters of length；The width of minor matters 2 is 0.1 millimeter, and length is 29 millimeters；
Two ports respectively with 4G antennas and the first block capacitor capacitance connection；
Preferably, the band filter is using village field SAW filter or TDK SAW filters；
Preferably, high-frequency inductor of the radio frequency choke inductance using high q-factor；
Further, the inductance value of the radio frequency choke inductance is 120nH；
Preferably, the capacitance of first, second, third block capacitor is 200pF.
By technical scheme, the coaxial feeder that vehicle-mounted 4G antennas and gps antenna are required for originally is incorporated into
One, feeder quantity is reduced, be easy to cable to arrange in the car, decrease the radio frequency of corresponding antenna end and equipment end
Adapter, can so reduce overall cost.
Description of the drawings：
Accompanying drawing 1 is elementary diagram of the present utility model；
Accompanying drawing 2 is the structural representation of distributed band elimination filter；
In Fig. 1,1 is 4G antennas, and 2 is band filter, and 3 is gps antenna, and 4 is the 3rd block capacitor, and 5 is that radio frequency is gripped
Streamline circle, 6 is RF adapters, and 7 is the second block capacitor, and 8 is coaxial feeder, and 9 is the first block capacitor, and 10 is band resistance filter
Ripple device；
In Fig. 2,101 is pcb board, 102 be port 2,103 be microstrip line, 104 be port 1,105 be minor matters 1,106 be branch
Section 2；
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is described further：
1 is 4G antennas, and 10 is band elimination filter, and 9 is the first block capacitor, and 7 is coaxial feeder, 4G antennas 1 and band resistance
The a port connection of wave filter 10,10 another port of band elimination filter is connected with one end of the first block capacitor 9, first every
The other end of straight capacitor 9 is connected to coaxial feeder 7；Band elimination filter 10 prevents the signal that gps antenna 3 is received to enter 4G days
Line 1 and cause the loss of 3dB, the first block capacitor 9 prevents band elimination filter 10 from causing direct-current short circuit.
3 is gps antenna, and 4 is the 3rd block capacitor, and 2 is band filter, and 8 is the second block capacitor, gps antenna 3
It is connected with one end of the 3rd block capacitor 4, the other end of the 3rd block capacitor 4 connects one end of band filter 2, band logical
The other end of wave filter 2 connects one end of the second block capacitor 8, the other end connection coaxial feeder of the second block capacitor 8
7；Band filter 2 prevents 4G signals from entering gps antenna side, and the effect of the second block capacitor 8 and the 3rd block capacitor 4 is
Prevent band filter 2 from causing direct-current short circuit.
Direct current branch, series radio-frequency choke induction 5 in direct current branch is bridged between gps antenna 3 and coaxial feeder 7；Both protected
The power supply of the low-noise amplifier in GPS3 antennas has been demonstrate,proved, and prevents radiofrequency signal gps antenna 3 to be entered through direct current branch again.
Coaxial feeder 7 is connected with radio frequency connector.
Preferably, as shown in Figure 2, band elimination filter 10 is in two-sided FR4 printed circuit board (PCB)s (PCB) that thickness is 1 millimeter
On realized using distributed constant microstrip circuit；
Further, band elimination filter 10 is made up of microstrip line 103, minor matters 1 and minor matters 2 106, the resistance of microstrip line
Resist for 50 ohm, 2 millimeters of live width；The width of minor matters one is 1 millimeter, 7 millimeters of length；The width of minor matters two is 0.1 millimeter, length
For 29 millimeters；Two ports 102 and 104 respectively with 4G antennas and the first block capacitor capacitance connection；
Preferably, band filter 2 is using village field SAW filter or TDK SAW filters；
Preferably, high-frequency inductor of the radio frequency choke inductance 5 using high q-factor；
Further, the inductance value of radio frequency choke inductance 5 is 120nH；
Preferably, the first block capacitor 9, the second block capacitor 8, the capacitance of the 3rd block capacitor 4 are
200pF.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of vehicle GPS and 4G antennas merge coaxial feeder device, including coaxial feeder and radio frequency connector, it is characterized in that also
Grip including band elimination filter, band filter, the first block capacitor, the second block capacitor, the 3rd block capacitor, radio frequency
Streamline circle；
Band elimination filter one end connection 4G antennas, one end of other end connection first block capacitor, described first
The other end of block capacitor connects the coaxial feeder；
Described band filter one end connects second block capacitor, the other end and GPS of second block capacitor
Antenna connects, and the band filter other end connects one end of the 3rd block capacitor, the 3rd block capacitor
The other end be connected with the coaxial feeder；
Direct current branch is bridged between gps antenna and the coaxial feeder, the radio frequency choke electricity of having connected in direct current branch
Sense.
2. a kind of vehicle GPS according to claim 1 and 4G antennas merge coaxial feeder device, it is characterized in that the band resistance
Wave filter is realized using distributed constant microstrip circuit on the two-sided FR4 printed circuit board (PCB)s that thickness is 1 millimeter.
3. a kind of vehicle GPS according to claim 2 and 4G antennas merge coaxial feeder device, it is characterized in that the band resistance
Wave filter is made up of microstrip line, minor matters one and minor matters two, and the impedance of microstrip line is 50 ohm, 2 millimeters of live width；The width of minor matters 1
For 1 millimeter, 7 millimeters of length；The width of minor matters 2 is 0.1 millimeter, and length is 29 millimeters；Two ports respectively with 4G antennas and institute
State the first block capacitor capacitance connection.
4. a kind of vehicle GPS according to claim 1 and 4G antennas merge coaxial feeder device, it is characterized in that the band logical
Wave filter is using village field SAW filter or TDK SAW filters.
5. a kind of vehicle GPS according to claim 1 and 4G antennas merge coaxial feeder device, it is characterized in that the radio frequency
High-frequency inductor of the choke induction using high q-factor.
6. a kind of vehicle GPS and 4G antennas according to claim 1 or 5 any one merges coaxial feeder device, and which is special
Levy be the radio frequency choke inductance inductance value be 120nH.
7. a kind of vehicle GPS according to claim 1 and 4G antennas merge coaxial feeder device, it is characterized in that described the
First, the capacitance of second, third block capacitor is 200pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025786.3U CN206022618U (en) | 2016-08-25 | 2016-08-25 | A kind of vehicle GPS and 4G antennas merge coaxial feeder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025786.3U CN206022618U (en) | 2016-08-25 | 2016-08-25 | A kind of vehicle GPS and 4G antennas merge coaxial feeder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206022618U true CN206022618U (en) | 2017-03-15 |
Family
ID=58259292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621025786.3U Active CN206022618U (en) | 2016-08-25 | 2016-08-25 | A kind of vehicle GPS and 4G antennas merge coaxial feeder device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206022618U (en) |
-
2016
- 2016-08-25 CN CN201621025786.3U patent/CN206022618U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou ketewa Electronics Co.,Ltd. Address before: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CTW ELECTRONICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |