CN102694240A - High-performance ultra-wide-band VHF/UHF vehicle-mounted antenna - Google Patents
High-performance ultra-wide-band VHF/UHF vehicle-mounted antenna Download PDFInfo
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- CN102694240A CN102694240A CN2012101732864A CN201210173286A CN102694240A CN 102694240 A CN102694240 A CN 102694240A CN 2012101732864 A CN2012101732864 A CN 2012101732864A CN 201210173286 A CN201210173286 A CN 201210173286A CN 102694240 A CN102694240 A CN 102694240A
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Abstract
The invention relates to a high-performance ultra-wide-band VHF (Very high frequency)/UHF (Ultra High Frequency) vehicle-mounted antenna. The antenna comprises an antenna oscillator, a damping spring and a fixed base, wherein the antenna oscillator is connected to the fixed base through the damping spring and comprises at least two sections of radiation oscillators and at least one loading resistor; the adjacent two radiation oscillators are connected through the loading resistor to form a linear structure; and the radiation oscillator at the bottom end is connected to a cable socket in the fixed base through a transmission line. The radiation oscillators and the loading resistors are connected at intervals; an impedance converter is connected with the cable socket; the length of the radiation oscillators and the loading resistance value, as well as position variation, are adjusted to form the high-performance ultra-wide-band VHF/UHF vehicle-mounted antenna; and the impedance converter is adjusted to regulate the matching of the antenna. The high-performance ultra-wide-band VHF/UHF antenna has the advantages of simple structure, convenience in manufacture, high precision, good consistency and wide band frequency, meets the application of both the frequency hopping technique and mobile communication, and adapts to the requirements for wideband and miniaturization of a vehicle-mounted antenna.
Description
Technical field
The present invention relates to a kind of antenna, is a kind of high-performance ultra broadband VHF/UHF car antenna specifically.
Background technology
Along with development of electronic technology, the particularly use of the application of frequency hopping and mobile communication is to the broadband and the increasingly high requirement of miniaturization proposition of antenna.In recent years, monopole antenna is in light weight with it, volume is little, simple in structure, omnidirectional's characteristic is good, with low cost is applied.
The Chinese patent publication number be CN 201060940Y disclosure of the Invention the vehicle-mounted broadband of a kind of VHF whip antenna; Long 1.8 meters of antenna oscillator, outsourcing fiberglass cylindrical shell is through olive-type spring and pedestal mechanical connection; Pedestal is fixed on the car body through the chassis; Dress broadband impedance transformer in the pedestal, antenna oscillator is electrically connected through the radio frequency (RF) coaxial connector of broadband impedance transformer and pedestal bottom, and this antenna uses on the frequency range of 30-88MHZ; Antenna is in light weight with it, volume is little, simple in structure, omnidirectional's characteristic is good, with low cost being applied.But such antenna height is 1/4 of an operating frequency wavelength, and when frequency was low, antenna was too high, be unfavorable on the mobile communication carrier, using, and the bandwidth of antenna does not often reach requirement again; Though another kind of antenna can satisfy certain service condition as biconical antenna and its bandwidth of discone antenna, it is oversize and then limited its scope of application at low frequency end.
Summary of the invention
To above-mentioned deficiency, the invention provides a kind of simple in structurely, easy to make, precision is high, and high conformity is taken into account the high-performance ultra broadband VHF/UHF car antenna of antenna broadband and miniaturization requirement.
The technical scheme that the present invention adopts is: a kind of high-performance ultra broadband VHF/UHF car antenna; Comprise antenna oscillator, damping spring and firm banking; Antenna oscillator is connected on the firm banking through damping spring; It is characterized in that said antenna oscillator comprises at least two sections radiating doublets and at least one loading resistor, two radiating doublets connect through loading resistor and are a linear structure, the cable socket of bottom radiating doublet in transmission line is connected to firm banking.
Further, said antenna oscillator is with the glass fibre reinforced plastic cylinder body outward.
Further, said antenna oscillator lowermost end connects impedance transformer, the cable socket of impedance transformer in transmission line is connected to firm banking.
The invention has the beneficial effects as follows: radiating doublet connects through loading resistor at interval in twos, equal one section radiating doublet at interval between loading resistor and the loading resistor, not only broadening the bandwidth of operation of antenna, also effectively reduced the height of antenna; The final section radiating doublet is connected with impedance transformer, and impedance transformer DC earthing, transmission line pass damping spring and be connected on the cable socket; Carry out feed on the cable socket bottom impedance transformer is connected to through transmission line, when the antenna working frequency range was 30-520MHz, its length was smaller or equal to 2.32m; Polarization mode is a perpendicular polarization, and antenna pattern is a horizontal plane omnidirectional, and weight is 2.8 ㎏; Power is 75W, standing wave≤2.5, and gaining is-5-4.5dBi.
The present invention adopts radiating doublet to link to each other at interval with loading resistor; Again by impedance transformer stube cable socket; Can form a high-performance ultra broadband VHF/UHF car antenna through length and the size of loading resistor value of adjustment radiating doublet and the variation of position; And adjust the coupling of antenna through the adjustment impedance transformer; It is simple in structure, easy to make, precision is high, high conformity, bandwidth, satisfied the application of frequency hopping and the use of mobile communication, has adapted to the broadband of car antenna and the requirement of miniaturization.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: radiating doublet 1, loading resistor 2, impedance transformer 3, damping spring 4, firm banking 5, cable socket 6, fiberglass cylindrical shell 7.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Shown in Figure 1, a kind of high-performance ultra broadband VHF/UHF car antenna comprises 5 sections radiating doublets 1,4 loading resistors 2, impedance transformer 3, damping spring 4, firm banking 5, cable socket 6 and fiberglass cylindrical shells 7.5 sections radiating doublets 1 are connected at interval with 4 loading resistors 2 and are a straight line body of rod; Radiating doublet is connected with impedance transformer 3 bottom; 1,4 loading resistors 2 of 5 sections radiating doublets and impedance transformer 3 integral sleeve fiberglass cylindrical shells 7; Impedance transformer 3 belows are installed on the firm banking 5 through damping spring 4, are provided with cable socket 7 in the firm banking 5, impedance transformer 3 DC earthings and through pipeline stube cable socket 6.
Claims (3)
1. high-performance ultra broadband VHF/UHF car antenna; Comprise antenna oscillator, damping spring and firm banking; Antenna oscillator is connected on the firm banking through damping spring; It is characterized in that: said antenna oscillator comprises at least two sections radiating doublets and at least one loading resistor, faces two radiating doublets mutually and is a linear structure, the cable socket of bottom radiating doublet in transmission line is connected to firm banking by loading resistor connection.
2. a kind of high-performance ultra broadband VHF/UHF car antenna according to claim 1, it is characterized in that: said antenna oscillator is with the glass fibre reinforced plastic cylinder body outward.
3. a kind of high-performance ultra broadband VHF/UHF car antenna according to claim 1 is characterized in that: said antenna oscillator lowermost end connects impedance transformer, the cable socket of impedance transformer in transmission line is connected to firm banking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101732864A CN102694240A (en) | 2012-05-30 | 2012-05-30 | High-performance ultra-wide-band VHF/UHF vehicle-mounted antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101732864A CN102694240A (en) | 2012-05-30 | 2012-05-30 | High-performance ultra-wide-band VHF/UHF vehicle-mounted antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102694240A true CN102694240A (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101732864A Pending CN102694240A (en) | 2012-05-30 | 2012-05-30 | High-performance ultra-wide-band VHF/UHF vehicle-mounted antenna |
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| CN (1) | CN102694240A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401023A (en) * | 2019-08-24 | 2019-11-01 | 嘉兴诺艾迪通信科技有限公司 | A kind of ultra wide band V/UHF miniaturization omnidirectional antenna with trap characteristic |
| CN112119538A (en) * | 2018-10-31 | 2020-12-22 | 深圳市大疆创新科技有限公司 | Antenna assembly and mobile device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546094A (en) * | 1993-07-26 | 1996-08-13 | Harada Kogyo Kabushiki Kaisha | Telescopic antenna for portable telephones |
| CN201060925Y (en) * | 2007-06-05 | 2008-05-14 | 王剑 | Short wave vehicle-mounted whip-shaped wideband antenna |
| CN201060940Y (en) * | 2007-06-05 | 2008-05-14 | 王剑 | VHF vehicle-mounted wideband whip-shaped antenna |
| CN202601835U (en) * | 2012-05-30 | 2012-12-12 | 泰兴市迅达通讯器材有限公司 | High-performance ultra-wideband very high frequency (VHF)/ultra high frequency (UHF) vehicle antenna |
-
2012
- 2012-05-30 CN CN2012101732864A patent/CN102694240A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546094A (en) * | 1993-07-26 | 1996-08-13 | Harada Kogyo Kabushiki Kaisha | Telescopic antenna for portable telephones |
| CN201060925Y (en) * | 2007-06-05 | 2008-05-14 | 王剑 | Short wave vehicle-mounted whip-shaped wideband antenna |
| CN201060940Y (en) * | 2007-06-05 | 2008-05-14 | 王剑 | VHF vehicle-mounted wideband whip-shaped antenna |
| CN202601835U (en) * | 2012-05-30 | 2012-12-12 | 泰兴市迅达通讯器材有限公司 | High-performance ultra-wideband very high frequency (VHF)/ultra high frequency (UHF) vehicle antenna |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112119538A (en) * | 2018-10-31 | 2020-12-22 | 深圳市大疆创新科技有限公司 | Antenna assembly and mobile device |
| CN110401023A (en) * | 2019-08-24 | 2019-11-01 | 嘉兴诺艾迪通信科技有限公司 | A kind of ultra wide band V/UHF miniaturization omnidirectional antenna with trap characteristic |
| CN110401023B (en) * | 2019-08-24 | 2023-12-01 | 嘉兴诺艾迪通信科技有限公司 | Ultra-wideband V/UHF miniaturized omnidirectional antenna with notch characteristic |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120926 |