CN205051346U - Radio frequency channel shunting transmission line transformer type arrester - Google Patents
Radio frequency channel shunting transmission line transformer type arrester Download PDFInfo
- Publication number
- CN205051346U CN205051346U CN201520734427.4U CN201520734427U CN205051346U CN 205051346 U CN205051346 U CN 205051346U CN 201520734427 U CN201520734427 U CN 201520734427U CN 205051346 U CN205051346 U CN 205051346U
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- radio frequency
- frequency channel
- line transformer
- transformer type
- transmitter
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Abstract
Radio frequency channel shunting transmission line transformer type arrester is the arrester device of installing between transmitter impedance fine setting network output mouth and feeder entry. This arrester adopts the characteristic impedance coaxial cable line the same with feeder characteristic impedance, and the coiling makes 1 on high magnetic permeability, low -loss ferrite core: 1 transmission line transformer. Characterized by: the RF power who exports (to sky feeder orientation) transmitter of forward transmission has high pass, broadband and matching characteristic, mainly has isolation, reposition of redundant personnel and attenuation characteristic for the thunder and lightning energy of low frequency component to reverse (from day feeder to the transmitter orientation) that attacks to reach the transmitter system that both guarantees and normally work, can play lightning -arrest effect again. Have thorough characteristics rational in infrastructure, lightning -arrest.
Description
Technical field
During the utility model belongs to, the lightning-protecting engineering field of shortwave and ultrashort wave frequency band radio transmitter, be specifically related to radio frequency channel shunting line transformer type lightning arrester, be installed between radio transmitter delivery outlet and output feeder.
Background technology
At present, at radio transmitting system, lightning protection measures mainly comprises antenna lightning protection and antenna matching network lightning protection.Antenna lightning protection measures is: 1) install electric discharge sparking gap device or lightning rod additional; 2 reduce antenna counterpoise earth resistance.Antenna matching network lightning protection measures is: 1) install graphic discharge sparking gap device additional; 2) install micro henry level inductance coil over the ground additional to release thunder and lightning; 3) be connected in series blocking capacitor in network and intercept thunder and lightning; 4) install phase-shift network additional, reduce load short circuits to the infringement of transmitter.
Above-mentioned measure thoroughly can't eliminate the infringement of thunder and lightning to transmitter at present, and one is because the energy of thunder and lightning is huge especially, can arrive transmitter, so that cause the infringement of transmitter by the thunder and lightning component leaked after lightning protection device by feeder line; Two is because at transmitter delivery outlet, does not also have effective lightning arrester can available protecting transmitter at present.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide radio frequency channel shunting line transformer type lightning arrester, be arranged between transmitter delivery outlet and feeder line, effectively can isolate, shunt and decay lightning voltage, electric current, protection transmitter is without prejudice; There is structure feature that is simple, thoroughly lightning-arrest and that easily realize.
To achieve these goals, the technical solution adopted in the utility model is: radio frequency channel shunting line transformer type lightning arrester, includes, and radio frequency channel shunting line transformer type lightning arrester is housed between the delivery outlet and feeder line of transmitter; Ball discharge is installed additional with feeder line porch at the D end of radio frequency channel shunting line transformer type lightning arrester; The D end of radio frequency channel shunting line transformer type lightning arrester is connected with antenna tuning network through the heart yearn of feeder line, and antenna tuning network is connected with antenna again; Transmitter delivery outlet is provided with impedance trim network; The A end of radio frequency channel shunting line transformer type lightning arrester is connected with the impedance trim network of transmitter.
Described radio frequency channel shunting line transformer type lightning arrester adopts the no-load voltage ratio of feed line impedance value to be the characteristic impedance line transformer of 1:1.
The outer conductor of the B termination feeder line of described radio frequency channel shunting line transformer type lightning arrester, outer conductor ground connection.
The C termination transmitter ground of described radio frequency channel shunting line transformer type lightning arrester.
The impedance trim network of described transmitter adopts phase shift 45 ° of phase-shift networks.
Described ball discharge is the ball discharge of adjustable discharging gap, one end ground connection of ball discharge.
The beneficial effects of the utility model are:
Transmitter can be more effectively prevented to be subject to the infringement of thunder and lightning.The lightning protection of transmitter is a system engineering, comprises antenna lightning protection and antenna tuning network lightning protection, transmitter self lightning protection, electric power system lightning protection and transmitter room lightning protection, and aggregate measures are indispensable.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is example structure figure of the present utility model.
In figure: 1, transmitter, 2, antenna tuning network, 3, radio frequency channel shunting line transformer type lightning arrester, 4, ball discharge, 5, feeder line, 6, transmitter impedance trim network, 7, coaxial wire, 8, ferrite two-hole magnet, 9, coaxial cable core wire A holds, 10, coaxial cable core wire B holds, and 11, coaxial cable outer conductor C holds, 12, coaxial cable outer conductor D holds.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, radio frequency channel shunting line transformer type lightning arrester, includes, between the delivery outlet and feeder line 5 of transmitter 1, radio frequency channel shunting line transformer type lightning arrester 3 is housed; Ball discharge 4 is installed additional with feeder line 5 porch at the D end of radio frequency channel shunting line transformer type lightning arrester 3; The D end of radio frequency channel shunting line transformer type lightning arrester 3 is connected with antenna tuning network 2 through the heart yearn of feeder line 5, and antenna tuning network 2 is connected with antenna again; Transmitter 1 delivery outlet is provided with impedance trim network 6; The A end of radio frequency channel shunting line transformer type lightning arrester 3 is connected with the impedance trim network 6 of transmitter 1.
The outer conductor of the B termination feeder line 5 of described radio frequency channel shunting line transformer type lightning arrester 3, outer conductor ground connection.
The C termination transmitter ground of described radio frequency channel shunting line transformer type lightning arrester 3.
The impedance trim network 6 of described transmitter 1 adopts phase shift 45 ° of phase-shift networks.
Described ball discharge 4 is the ball discharge of adjustable discharging gap, one end ground connection of ball discharge.
Fig. 2 is enforcement structure chart of the present utility model, Fig. 2 standard coaxial cable line 7 wraps the suitable number of turn in ferrite two-hole magnet 8, setting 9 and 11 of coaxial wire, the top for coaxial wire 7,10 and 12 sides of coaxial wire are the end of coaxial wire 7.This device is exactly 1:1 line transformer, radio frequency channel shunting line transformer type lightning arrester 3 namely in Fig. 1, radio frequency channel shunting line transformer type lightning arrester 3 is connected according to the circuit theory of Fig. 1, A end in Fig. 1 is corresponding with the coaxial cable core wire 9 in Fig. 2, and the B in Fig. 1 holds the coaxial cable core wire 10 in corresponding diagram 2; C in Fig. 1 holds the coaxial wire outer conductor 12 in the D end corresponding diagram 2 in the coaxial wire outer conductor 11, Fig. 1 in corresponding diagram 2.
The beneficial effects of the utility model are:
Can more effectively prevent transmitter to be subject to the infringement of thunder and lightning, the lightning protection of transmitter is a system engineering, comprises antenna lightning protection and antenna tuning network lightning protection, transmitter self lightning protection, electric power system lightning protection and transmitter room lightning protection, and aggregate measures are indispensable.
Described radio frequency channel shunting line transformer type lightning arrester, by appropriate design, utilizes the radio-frequency power of the high pass broadband of its radio frequency band transmissions and matching properties transfer transmitter to antenna feeder; Utilize it to the isolation of low frequency band transmissions, shunting and attenuation characteristic, the ground of transmitter of being released to by the lightning current attacked from feeder line, then import the earth by machine room.
Known from lightning wave spectrum analysis: the fundamental component of lightning current is the low frequency component of below 200KHz; 0-1KHz component is relatively large; raise with frequency and exponentially decay; its main energetic generally concentrates on below 40KHz; so utilization level impedance is the 1:1 line transformer of feed line impedance, be connected between transmitter delivery outlet and feeder line, both can have realized coupling and the transmission of transmitter output; can isolate again shunting and decay lightning current, protection transmitter is without prejudice.
In addition, when lightning current large to a certain extent time, the magnetic flux density of radio frequency channel shunting line transformer type lightning arrester reaches capacity, and magnetic permeability vanishing, transformer is short-circuit condition, loses transformer characteristic.Now this lightning arrester still has isolation to lightning voltage, electric current, shunting and attenuation.
For better protecting transmitter; this programme requires the ball discharge installing adjustable discharging gap in transmitter feeder porch additional; with excessive lightning current of releasing; in transmitter output network; require T-shaped or pin network impedance trim network being designed to phase shift 45 °; like this; when thunder and lightning attacks; line transformer causes load short circuits; impedance trim network presents to power amplifier the emotional resistance that absolute value is the characteristic impedance of feedback property, can prevent power amplifier from producing excessive transient voltage electric current and cause damage.
In FIG, the high-frequency current i that transmitter exports goes out, and export feeder line by line transformer principle to by radio frequency channel shunting line transformer type lightning arrester, its no-load voltage ratio is 1:1, voltage paraphase, impedance matching.When the lightning current iL being mainly low frequency component attacks from feeder line to transmitter, because the induction reactance of radio frequency channel shunting line transformer type lightning arrester is very little, iL is by the secondary ground of releasing of radio frequency channel shunting line transformer type lightning arrester, and the elementary lightning induced voltage of radio frequency channel shunting line transformer type lightning arrester is very little.Radio frequency channel shunting line transformer type lightning arrester is when designing, because the lower frequency limit of radio frequency transmission is by the quantitative limitation of primary winding inductance, so radio frequency channel shunting line transformer type lightning arrester will select high magnetic permeability, low-loss FERRITE CORE, when meeting lower limit operating frequency, reduce magnetic core quantity and coil turn, to take into account lightning function as far as possible.
Claims (6)
1. radio frequency channel shunting line transformer type lightning arrester, is characterized in that, between the delivery outlet of transmitter (1) and feeder line (5), radio frequency channel shunting line transformer type lightning arrester (3) is housed; Ball discharge (4) is installed additional with feeder line (5) porch at the D end of radio frequency channel shunting line transformer type lightning arrester (3); The D end of radio frequency channel shunting line transformer type lightning arrester (3) is connected with antenna tuning network (2) through the heart yearn of feeder line (5), and antenna tuning network (2) is connected with antenna again; Transmitter (1) delivery outlet is provided with impedance trim network (6); The A end of radio frequency channel shunting line transformer type lightning arrester (3) is connected with the impedance trim network (6) of transmitter (1).
2. radio frequency channel shunting line transformer type lightning arrester according to claim 1, is characterized in that, described radio frequency channel shunting line transformer type lightning arrester (3) adopts the no-load voltage ratio of feed line impedance value to be the characteristic impedance line transformer of 1:1.
3. radio frequency channel shunting line transformer type lightning arrester according to claim 1, is characterized in that, the outer conductor of the B termination feeder line (5) of described radio frequency channel shunting line transformer type lightning arrester (3), outer conductor ground connection.
4. radio frequency channel shunting line transformer type lightning arrester according to claim 1, is characterized in that, the C termination transmitter ground of described radio frequency channel shunting line transformer type lightning arrester (3).
5. radio frequency channel shunting line transformer type lightning arrester according to claim 1, is characterized in that, the impedance trim network (6) of described transmitter (1) adopts phase shift 45 ° of phase-shift networks.
6. radio frequency channel shunting line transformer type lightning arrester according to claim 1, is characterized in that, the ball discharge that described ball discharge (4) is adjustable discharging gap, one end ground connection of ball discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734427.4U CN205051346U (en) | 2015-09-22 | 2015-09-22 | Radio frequency channel shunting transmission line transformer type arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734427.4U CN205051346U (en) | 2015-09-22 | 2015-09-22 | Radio frequency channel shunting transmission line transformer type arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205051346U true CN205051346U (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520734427.4U Expired - Fee Related CN205051346U (en) | 2015-09-22 | 2015-09-22 | Radio frequency channel shunting transmission line transformer type arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205051346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119261A (en) * | 2015-09-22 | 2015-12-02 | 咸阳直标机电设备有限公司 | Wave channel shunt type transmission line transformer type lightning arrester |
-
2015
- 2015-09-22 CN CN201520734427.4U patent/CN205051346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119261A (en) * | 2015-09-22 | 2015-12-02 | 咸阳直标机电设备有限公司 | Wave channel shunt type transmission line transformer type lightning arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180821 Address after: 712000 2 Jinhua Road, Qin Du District, Xianyang, Shaanxi Patentee after: SHAANXI XUNTIAN BROADCASTING TECHNOLOGY CO.,LTD. Address before: 712021 4390 Jinhua Road, Xianyang, Shaanxi 4390 Patentee before: XIANYANG ZHIBIAO ELECTROMECHANICAL EQUIPMENT Co.,Ltd. |
|
| 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: 20160224 Termination date: 20210922 |