CN2726074Y - Signal transmission line for radio apparatus - Google Patents
Signal transmission line for radio apparatus Download PDFInfo
- Publication number
- CN2726074Y CN2726074Y CN 200420087132 CN200420087132U CN2726074Y CN 2726074 Y CN2726074 Y CN 2726074Y CN 200420087132 CN200420087132 CN 200420087132 CN 200420087132 U CN200420087132 U CN 200420087132U CN 2726074 Y CN2726074 Y CN 2726074Y
- Authority
- CN
- China
- Prior art keywords
- coaxial cable
- grounding
- wireless device
- grounding parts
- transmission line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model relates to a signal transmission line for radio apparatus, comprising a coaxial cable, a terminal installed on one end of the coaxial cable and connected with a radio apparatus, a joint installed on the other end of the coaxial cable and connected with a printed antenna, and a grounding component offering for grounding. The coaxial cable is provided with a core wire, an insulator, a covering layer and a casing in sequence from inside to outside. The covering layer is provided with a grounding part extensible to the outside of the casing, while the grounding part is fixed by a metallic sheath of the grounding component and a binding clamp of grounding strips and can be fixed to the grounding system. The utility model can prevent the surrounding interference of the doping signal effectively. The utility model can not only raise the sensibility, selectivity and fidelity factor of the receiver, but also improve the quality of the received signal.
Description
[technical field]
The utility model relates to a kind of coaxial cable, particularly relates to a kind of signal transmission line that can effectively stop to disturb, reduce transmission loss, reduce the wireless device of distortion.
[background technology]
The combination of communication in recent years and networking science and technology, created the atypical industrial revolution, human life pattern also produces the variation of vastly because this kind changes, for example, and for striving for timeliness, people require the efficient of taking action, thereby portable phone, portable moving online, the guiding of GPS road conditions, portable video-signal system ... be born in succession, suchlike portable communication system is in order to ask substantial mobile efficient, just be installed on the vehicles, to reach best mobile efficient.
Yet,,, just all be to borrow wireless transmission, thereby receiver (Receiver), transmitter (Transmitter) all arranged or answer inquiry machine (Transponder) on the device no matter function, all has a common point why at above-mentioned portable communication system.
For these wireless devices, first heavy in the use covering scope, and influence to contain the maximum factor of distance be exactly transmission loss, and transmission loss is divided into two kinds: 1. wired transmission loss, 2. aerial transmission loss.Wherein have only wired transmission loss to be improved through design, that is to say, all designers all wish to reach maximum covering scope and the receiving efficiency that reaches the best with the transmission loss of minimum with less transmitting power.
(comprise original broadcast receiver) when on automobile, installing this class wireless device additional, its main frame by wireless device is connected to the transmission line between the antenna body, as shown in Figure 1, be to utilize a coaxial cable 1, this coaxial cable 1 includes an inner conductor 101 from inside to outside in regular turn, one insulator 102, one external conductor 103 and a crust 104, this inner conductor 101 is used for transmission signal, and borrow the coating of insulator 102 and reach the insulation purpose, 103 of this external conductors are after receiving noise, noise ground connection is derived, avoiding interference normal signal, and it is the coating that utilizes crust 104.Again as shown in Figure 2, the assembling of this coaxial cable 1, be that an end is provided with a terminal 2 therein, utilize this terminal 2 can be connected to main frame 3 (Source Musics, portable phone, video-signal system or global position system ... or the like), the other end then can be connected with a grounding assembly 4, and be external conductor 103 drawing bunchys with coaxial cable 1, and it is solid with a ground strip 401 bundles, inner conductor 101 is then fixing with the heart yearn 501 1 ends welding of a lead 5, and on lead 5, be provided with an anti-avulsion copper and buckle 502, and utilize a cladding 402 with anti-avulsion copper button 502, ground strip 401, one end of coaxial cable 1 utilizes ejection formation and directly coats fixed, lead 5 other ends then are connected with a binding post 503, for pegging graft with a receiving system 6.Again as shown in Figure 3, this ground strip 401 can utilize screw locking on the grounding system of automobile (normally be electrically connected with panel beating locking and being in the automobile car, the position of panel beating shown in the figure is the C post between rear seat windscreen and the rear side windows glass).
Really, utilize the setting of lead 5 and coaxial cable 1, can reach the purpose of signal transmission, but on practice, but can produce following disappearance:
One, the ground strip 401 of this coaxial cable 1 and the point of contact of the interior panel beating of car, the cable that all has a big section to become the some of antenna is covered by panel beating, causing transmission loss to increase reflection power raises, normally receive by the transmission line that lead 5 and coaxial cable 1 constitute, shared when sending out signal, when being used to launch signal, because the terminal lead 5 that is connected to single heart yearn 501, its AC impedance is inevitable different with coaxial cable 1, the relative impedance with the emission main frame is difficult to coupling, when therefore launching signal, this lead 5 is with the some that equals antenna, especially apply to higher frequency band, as portable electrification, DVB-T, during satellite navigation, not only cause the decay of transmitting power, and reflection power must raise, and so must raise, have a greatly reduced quality for transmitter frequency for heavy V parameter .S.W.R (the Voltage Standing Wave Ratio) standing-wave ratio of emission prow.
Two, this transmission line is when receiving signal, because this lead 5 does not have fully and covers, therefore at the received external electric wave of this line segment, cause the interference of receiver easily, to receiving the ability and the selectivity (selectivity) of the heavy sensitivity (sensitivity) of prow, reception faintness wave, remove exactly and will receive the electric wave ability of electric wave in addition, considerable influence is arranged.
Three, because this lead 5 is to be the mode that can freely swing to be provided with, therefore swing or the vibrations in the driving, the irregular vibration of lead 5 will be caused, thereby and the car body panel beating between distance constantly produce change, the signal that makes desire receive produces beats, the fidelity factor (Fidelity) that requires for receiver, exactly to the electric wave that receives confidential reception replicable informativeness to a certain degree, be difficult to reach.
Therefore, existing coaxial cable, on reality was used, not only loss transmitting power was subject to disturb, and has reduced the requirement of receiver for sensitivity, selectivity and fidelity factor, can't give security to the signal quality that receives, and haves much room for improvement in fact.
[utility model content]
The purpose of this utility model is to provide a kind of signal transmission line of wireless device, can effectively stop the interference of extraneous noise, promote the requirement of receiver on sensitivity, selectivity and fidelity factor, and then effectively improvement receives signal quality, and loss can be reduced to minimumly, and effectively reduce reflection power, make transmitter performance optimum efficiency, and because of reducing reflection power, so the assembly of transmitter is increased the service life.
The signal transmission line of wireless device of the present utility model is to be connected electrically between a printed antenna set on the windshield and the wireless device, and comprise a coaxial cable, and be installed in this coaxial cable one end and the terminal that is connected with a wireless device, and be installed in this coaxial cable the other end and a joint that is connected with a printed antenna and a grounding assembly for ground connection, it is characterized in that:
This coaxial cable, the second end with a first end and an opposite setting with this first end, and have the crust that a stamen line, an insulator, a coating layer and are made with insulating material from inside to outside in regular turn, this coating layer is arranged on the grounding parts of this crust outside to the direction that should the second end has this first end on one day;
This terminal is the first end that is fixed in this coaxial cable;
This joint is to be fixed in this coaxial cable to protrude out on the stamen line of grounding parts outside;
This grounding assembly, have a metal sleeve and a ground strip, this metal sleeve is set in this grounding parts outside and is electrical connection, this ground strip one end is to be fixed in this metal sleeve outside and to be consolidated into one with this coaxial cable, the other end is provided with a location hole, pass and be locked on the interior panel beating of car for screw, be connected and fixed with grounding system, the earth point of this grounding parts to this length of said joint forms a matching part.This matching part is the part of antenna.
The signal transmission line of described wireless device is characterized in that: this matching part is stretched on the vehicle glass face just outward and is not subjected to covering of plates of automobile, and becomes the part of antenna, and between this grounding parts and plates of automobile, the spacing of fixed interval.
The signal transmission line of described wireless device is characterized in that: also comprise one be coated and fixed in this matching part, the guard member of this grounding assembly outside, this guard member is to make with insulating material.
The signal transmission line of described wireless device, it is characterized in that: to be the coating layer that exposed by decortication turn up reflexed and form towards the direction of this first end the grounding parts of this coaxial cable, is the outside that protrudes out at this grounding parts to stamen line that should decortication.
The signal transmission line of described wireless device, it is characterized in that: the grounding parts of this coaxial cable is that welding one lead forms on the coating layer of this correspondence the second end, and the other end of this grounding parts extends to this metal sleeve inside towards the direction of this first end.
Conclude above-mentioned, the signal transmission line of the utility model wireless device, the interference that can effectively stop extraneous noise not only can promote the requirement of receiver on sensitivity, selectivity and fidelity factor, and can effectively improve the reception signal quality, can reach the purpose of this utility model really.
[description of drawings]
Be elaborated below by most preferred embodiment and accompanying drawing signal transmission line to wireless device of the present utility model, in the accompanying drawing:
Fig. 1 is existing a kind of coaxial cable generalized section;
Fig. 2 is the combination schematic diagram of existing transmission line and grounding assembly;
Fig. 3 is the installing schematic diagram of existing transmission line and grounding assembly;
Fig. 4 is the three-dimensional combination figure of the utility model first preferred embodiment;
Fig. 5 is the combination schematic diagram of the above-mentioned preferred embodiment of the utility model, and the combination of a grounding assembly and a coaxial cable is described;
Fig. 6 is the cross-sectional schematic of being got along the straight line 6-6 among Fig. 5.
Fig. 7 is the schematic perspective view of the utility model second preferred embodiment;
Fig. 8 is the grounding assembly of the utility model second preferred embodiment and the combination section of coaxial cable;
Fig. 9 is the combination section of the utility model the 3rd preferred embodiment;
Figure 10 is the cross-sectional schematic of being got along the straight line 10-10 among Fig. 9.
[embodiment]
For convenience of description, following embodiment, components identical is represented with identical label.
As Fig. 4 and shown in Figure 5, the preferred embodiment of the signal transmission line of the utility model wireless device, be to be connected electrically between a printed antenna set on the windshield and the wireless device (figure does not show), and include a coaxial cable 10, be installed in this coaxial cable 10 wherein an end terminal 20, one with these terminal 20 opposite joint 30 and grounding assemblies 40 that are provided with and are installed in these coaxial cable 10 the other end.
These coaxial cable 10 tool predetermined lengths have the crust 14 that a stamen line 11, an insulator 12, a coating layer 13 and are made with insulating material from inside to outside in regular turn.This coaxial cable 10 have one with the affixed first end 15 of terminal 20 and one with these first end 15 opposite the second ends 16 that are provided with and can be connected with this joint 30, the direction that 13 pairs of this coating layers should the second end 16 have this first end 15 on one day is arranged on the grounding parts 17 of these crust 14 outsides, the grounding parts 17 of present embodiment is divested the crust 14 corresponding to this second end 16, and make the coating layer 13 that exposes turn up reflexed and produce this grounding parts 17 towards this first end 15, and the side of this insulator 12 is to should crust 14, impels this stamen line 11 to protrude in these grounding parts 17 outsides.
This terminal 20 can supply and wireless device (Source Music, portable phone, video-signal system or global position system ... or the like) engage fast.
This joint 30 is to be fixed on the stamen line 11 of this coaxial cable 10, and can for is connected with set printed antenna on the windshield (this partly is prior art, thus do not describing in detail at this, and scheme not show).
Shown in Fig. 4,5,6, this grounding assembly 40 has the ground strip 42 that a metal sleeve 41 and is set in these metal sleeve 41 outsides.This metal sleeve 41 is before 30 installings of this terminal 20 or joint, just is set in this grounding parts 17 outsides in advance, and this metal sleeve 41 is with this grounding parts 17 be electrically connected.This ground strip 42 has the location hole 422 that a curling bundle knot portion 421 and that is hollow cylindrical is arranged on these bundle knot portion 421 1 sides, the length of this bundle knot portion 421 is less than or equal to metal sleeve 41, can be set in this metal sleeve 41 outsides, when this restraints knot portion 421 by cramping, this ground strip 42 can firmly be consolidated into one with metal sleeve 41, coaxial cable 10, and makes ground strip 42, metal sleeve 41, grounding parts 17 can not produce relative disengaging with coaxial cable 10.This location hole 422 can pass and be locked on the interior panel beating of car, for being connected and fixed with grounding system for screw.
Whereby, for printed antenna collocation effective and windshield using, to make things convenient for the design of printed antenna, after these grounding parts 17 ground connection, by earth point to the length of this joint 30 and produce a matching part 43, after this ground strip 42 was locked in the car panel beating location, this matching part 43 is just outer stretched on the windshield and is not subjected to covering of plates of automobile, and this matching part 43 becomes the part of antenna when therefore using.Moreover the design of this ground strip 42 is behind the panel beating location, just to make between this grounding parts 17 and plates of automobile, at interval predetermined spacing in being locked in car.
In addition, as shown in Figure 5, signal transmission line of the present utility model also can comprise one be coated and fixed in this matching part 43 to implant shoot mode, the guard member 50 of these grounding assembly 40 outsides, this guard member 50 is to make (as polyvinyl chloride) with insulating material.
Therefore, coaxial cable 10 of the present utility model is to produce ground connection at the printed antenna place of contiguous windshield, and be a coaxial cable from the beginning to the end, so impedance is fixed, can not change, behind the cable of selecting suitable specification, then can do best designing impedance matching, compared to existing transmission line, when bringing into play preferable signal efficiency of transmission with wireless device.And because coaxial cable 10 utilizes ground strip 42 lockings on the grounding system of panel beating in the car, and that joint 30 has been pegged graft is fixing, so being, signal transmission line integral body fixedly installs, even swing or vibrations in the driving, also can not cause coaxial cable 10 to produce irregular vibration, the signal that makes desire receive is stable, fidelity factor is good.
Moreover, because the path of signal transmission, be exactly this stamen line 11 when transmitting signal, entire path all has this coating layer 13, has complete screening effect after ground connection, and just outer the stretching in this matching part 43 is not subjected to covering of plates of automobile on the windshield, therefore matching part 43 becomes the part of antenna, so when receiving signal, do not have external interference, can guarantee that the sensitivity, selectivity and the fidelity factor that receive are unaffected, and can provide clear, complete signal to come from receiver.In addition, wireless device is when transmitting the emission signal, the impedance matching of cable body is appropriate, can not become the some of antenna as the cable that existing transmission line one big section is covered by panel beating, cause reflection power to raise, the problem that the V.S.W.R standing-wave ratio improves relatively is to the signal of wireless device itself and emission, have preferable guarantee and quality assurance relatively, and comparatively practical.
The utility model second embodiment as Fig. 7, shown in Figure 8, is the relative position of panel beating and this printed antenna in the cooperation car, is the matching part 43 ' of this guard member 50 ' and this coaxial cable 10 ' can be penetrated into a bent shape directly into mould.
The utility model the 3rd embodiment, as Fig. 9, shown in Figure 10, this coaxial cable 10 " grounding parts 17 " be at this correspondence the second end 16 " and coating layer 13 " on the end face welding one lead produce this grounding parts 17 " the other end extend to this metal sleeve 41 inside towards the direction of this first end.Whereby, also can make this grounding parts 17 " reach the ground connection purpose.
Claims (5)
1. the signal transmission line of a wireless device, be to be connected electrically between a printed antenna set on the windshield and the wireless device, and comprise a coaxial cable, and be installed in this coaxial cable one end and the terminal that is connected with a wireless device, and be installed in this coaxial cable the other end and a joint that is connected with a printed antenna and a grounding assembly for ground connection, it is characterized in that:
This coaxial cable, the second end with a first end and an opposite setting with this first end, and have the crust that a stamen line, an insulator, a coating layer and are made with insulating material from inside to outside in regular turn, this coating layer is arranged on the grounding parts of this crust outside to the direction that should the second end has this first end on one day;
This terminal is the first end that is fixed in this coaxial cable;
This joint is to be fixed in this coaxial cable to protrude out on the stamen line of grounding parts outside;
This grounding assembly, have a metal sleeve and a ground strip, this metal sleeve is set in this grounding parts outside and is electrical connection, this ground strip one end is to be fixed in this metal sleeve outside and to be consolidated into one with this coaxial cable, the other end is provided with a location hole, pass and be locked on the interior panel beating of car for screw, be connected and fixed with grounding system, the earth point of this grounding parts to this length of said joint forms a matching part.
2. the signal transmission line of wireless device as claimed in claim 1, it is characterized in that: this matching part is stretched on the vehicle glass face just outward and is not subjected to covering of plates of automobile, and become the part of antenna, and between this grounding parts and plates of automobile, the spacing of fixed interval.
3. the signal transmission line of wireless device as claimed in claim 1 is characterized in that: also comprise one be coated and fixed in this matching part, the guard member of this grounding assembly outside, this guard member is to make with insulating material.
4. the signal transmission line of wireless device as claimed in claim 1, it is characterized in that: to be the coating layer that exposed by decortication turn up reflexed and form towards the direction of this first end the grounding parts of this coaxial cable, is the outside that protrudes out at this grounding parts to stamen line that should decortication.
5. the signal transmission line of wireless device as claimed in claim 1, it is characterized in that: the grounding parts of this coaxial cable is that welding one lead forms on the coating layer of this correspondence the second end, and the other end of this grounding parts extends to this metal sleeve inside towards the direction of this first end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420087132 CN2726074Y (en) | 2004-08-16 | 2004-08-16 | Signal transmission line for radio apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420087132 CN2726074Y (en) | 2004-08-16 | 2004-08-16 | Signal transmission line for radio apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2726074Y true CN2726074Y (en) | 2005-09-14 |
Family
ID=35040786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420087132 Expired - Fee Related CN2726074Y (en) | 2004-08-16 | 2004-08-16 | Signal transmission line for radio apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2726074Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9487441B2 (en) | 2011-10-28 | 2016-11-08 | Corning Incorporated | Glass articles with infrared reflectivity and methods for making the same |
| US10116035B2 (en) | 2015-04-30 | 2018-10-30 | Corning Incorporated | Electrically conductive articles with discrete metallic silver layers and methods for making same |
| CN110611177A (en) * | 2018-09-30 | 2019-12-24 | 中航光电科技股份有限公司 | Wire shielding overlap joint structure |
-
2004
- 2004-08-16 CN CN 200420087132 patent/CN2726074Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9487441B2 (en) | 2011-10-28 | 2016-11-08 | Corning Incorporated | Glass articles with infrared reflectivity and methods for making the same |
| US9586861B2 (en) | 2011-10-28 | 2017-03-07 | Corning Incorporated | Glass articles with discrete metallic silver layers and methods for making the same |
| US9975805B2 (en) | 2011-10-28 | 2018-05-22 | Corning Incorporated | Glass articles with infrared reflectivity and methods for making the same |
| US11535555B2 (en) | 2011-10-28 | 2022-12-27 | Corning Incorporated | Glass articles with infrared reflectivity and methods for making the same |
| US10116035B2 (en) | 2015-04-30 | 2018-10-30 | Corning Incorporated | Electrically conductive articles with discrete metallic silver layers and methods for making same |
| CN110611177A (en) * | 2018-09-30 | 2019-12-24 | 中航光电科技股份有限公司 | Wire shielding overlap joint structure |
| CN110611177B (en) * | 2018-09-30 | 2021-05-18 | 中航光电科技股份有限公司 | Wire shielding overlap joint structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5690842B2 (en) | Antenna integrated harness | |
| JPH0286201A (en) | Loop antenna for automobile | |
| US5668564A (en) | Combined AM/FM/cellular telephone antenna system | |
| CN2726074Y (en) | Signal transmission line for radio apparatus | |
| JP2985196B2 (en) | Vehicle antenna device | |
| US20100225547A1 (en) | Vehicle concealed antenna | |
| EP0223398B1 (en) | Vehicle antenna system | |
| US5448256A (en) | Antenna | |
| JPS6146601A (en) | Antenna for automobile | |
| JPH06152219A (en) | Antenna for mobile body | |
| TW200939558A (en) | Vehicular reception equipment | |
| JP2007067970A (en) | Antenna and antenna cable attaching structure | |
| TWI239152B (en) | Signal transmission line of wireless equipment | |
| CN221150464U (en) | Telescopic vehicle-mounted antenna assembly | |
| CN220914554U (en) | Vehicle-mounted vibration reduction antenna | |
| CN219144488U (en) | LTE vehicle-mounted antenna and antenna device for automobile interior | |
| JPH0936632A (en) | Three-frequency shared on-vehicle antenna | |
| JP2007030855A (en) | Earth cable for vehicle and connection structure for earth cable | |
| JP3159467B2 (en) | In-vehicle mobile station antenna | |
| KR100913146B1 (en) | Noise filter and digital multimedia broadcasting system using a hot wire of cars comprising the noise filter and film antenna | |
| JPH07131222A (en) | Upholstery for automobile | |
| KR100264674B1 (en) | Antenna device for automotive vehicle | |
| KR0174114B1 (en) | Car antenna | |
| KR100278970B1 (en) | Automotive mirror-mounted helical antenna device | |
| JPH04275705A (en) | Built-in antenna for automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |