CN102780077A

CN102780077A - Broadband cylindrical antenna

Info

Publication number: CN102780077A
Application number: CN201210247253XA
Authority: CN
Inventors: 周乐兵
Original assignee: Suzhou Wutong Antenna Co Ltd
Current assignee: Suzhou Wutong Antenna Co Ltd
Priority date: 2012-07-18
Filing date: 2012-07-18
Publication date: 2012-11-14

Abstract

The invention discloses a broadband cylindrical antenna. The broadband cylindrical antenna comprises an insulating cover and a radio frequency connector, as well as a first branch, a second branch, an exposed copper area and a feed source which are coated in the insulating cover, wherein the first branch and the second branch are respectively connected with corresponding circuits; the first branch vertically penetrates through the center of the second branch and is arranged and fixed on a geometric center shaft of the second branch, and the first branch and the second branch are penetrated and connected into a whole through the feed source and the exposed copper area; the feed source is communicated with the circuit on a conductor in the first branch; the exposed copper area is communicated with the circuit at the lower end of the second branch; the first branch and the second branch are mutually insulated; and the feed source is inserted and connected in the exposed copper area, and a feed-in point of an RF (radio frequency) circuit of a wireless terminal product is connected through the other end of the feed source for receiving external radio signals. The broadband cylindrical antenna disclosed by the invention has the advantages of stable and reliable structure, small volume, simplicity in mounting, lower cost, ultra broadband, high efficiency and excellent wireless communication performance.

Description

A kind of wideband column antenna

Technical field

The present invention relates to a kind of column antenna, the wideband column antenna of design that a kind of frequency covers 824MHz-2200MHz, miniaturization, low cost, excellent radio-frequency performance is provided especially, belong to the wireless communication technique field.

Background technology

As shown in Figure 1, in existing 3G wireless communication technology, the traditional antenna complex structure comprises first branch 01 that coats in insulation shell 04 and the insulation shell 04 down, second branch 02, the 3rd branch 08, dew copper district 05 and feed 07; Said first branch 01 and the 3rd branch 08 upper end fuse; Said the 3rd branch 08 lower end and feed 07 fuse; Said second branch 02 upper end fuses with dew copper district 05; Respectively be provided with circuit in said first branch 01, second branch 02, the 3rd branch 08; Said the 3rd branch 08 is the inner wire of 50 ohm of RF coaxial cables; Said dew copper district is the outer conductor of 50 Ω RF coaxial cables; Said dew copper district 05 is connected with circuit in second branch 02; Feed 07 1 ends of said general 50 ohm of radio frequency connector inner wire structures are arranged on the load point of wireless terminal product RF circuit, and the other end is arranged in the 3rd branch 08, are conducted with circuit in first branch 01, can receive outside radio signal.This antenna is at present more common; Be applied in the wireless terminal product; With the radio fixed station is main structure; But its cost of manufacture is high, volume is big, assembling difficulty, low, the narrow bandwidth of efficient, and is visible like Fig. 3, bandwidth characteristic figure shown in Figure 4, is difficult to satisfy the requirement of present 3G market multifrequency communication.

Wireless terminal is because function is constantly strengthened, and the wireless module integrated level improves constantly, and antenna is had higher requirement---the radio-frequency performance of wideer working band, the design of miniaturization, low cost, excellence.And, press for a kind of design that can satisfy 3G communication multifrequency needs, miniaturization, less, cost is lower, performance is more excellent wide frequency antenna affected by environment along with the maturation of 3G technology is popularized with using constantly.

Summary of the invention

The present invention seeks to have proposed a kind of in limited, less space for the deficiency that overcomes prior art; Design and satisfy the 3G antenna that the broadband requires; Can realize ultra broadband, high efficiency wireless transmission capability, and keep Stability Analysis of Structures, the volume of antenna device little, installations is simple, cost of manufacture is lower and wideband column antenna with radio-frequency performance of excellence.

For achieving the above object, the technical scheme that the present invention adopts is: a kind of wideband column antenna comprises first branch, second branch, dew copper district and the feed that coat in insulating cover, radio frequency connector, the insulating cover; Said first, second branch links to each other with corresponding electrical circuits separately respectively; Said first branch vertically passes second fen branch center and is provided with and is fixed on second branch's geometrical central axis, and said first branch, second branch are via feed with reveal the copper district and be connected into one; Said feed is connected with circuit on first branch's inner wire; Said dew copper district is connected with the circuit of the second branch lower end; Said first branch and second branch insulate each other; Said feed is plugged in and reveals in the copper district, and the load point of connecting the wireless terminal product radio circuit through the feed other end receives outside radio signal.

Preferably, said dew copper district is 50 ohm of radio frequency connector outer conductors;

Preferably, said feed is 50 radio frequency connector inner wires;

Preferably, said first branches into 50 ohm of radio frequency cables, and second branches into hollow copper bar;

Because the utilization of technique scheme, the present invention compared with prior art has advantage:

Wideband column antenna of the present invention can make that antenna is complicated from traditional structure, volume is big, cost of manufacture is high, assembling is difficult, low simple in structure, high efficiency, the ultra broadband of breaking through to of narrow bandwidth, efficient, and installation simply.In addition; This antenna structure also has advantages such as advantages of small volume, the remarkable reduction of cost of manufacture; With the wireless telecommunications performance of excellence, tenability when improving wireless terminal product to standards such as 2G, 3G and GPS, and keep the miniaturization of antenna device and the cost of manufacture of excellence thereof; So in 2G, especially 3G wireless transmission end product, be main with radio fixed station; The present invention program is simple in structure, practical.

Description of drawings

Below in conjunction with accompanying drawing technical scheme of the present invention is described further:

Accompanying drawing 1 is the structural representation of prior art antenna;

Accompanying drawing 2 is a structural representation of the present invention;

Accompanying drawing 3 is the standing-wave ratio resolution chart of prior art antenna;

Accompanying drawing 4 is the return loss resolution chart of prior art antenna;

Accompanying drawing 5 is a standing-wave ratio resolution chart of the present invention;

Accompanying drawing 6 is a return loss resolution chart of the present invention;

Wherein: 01, first branch; 02, second branch; 04, insulation shell; 05, reveals the copper district; 07, feed; 08, the 3rd branch; 10, first branch; 20, second branch; 30, the 3rd branch; 50, reveal the copper district; 70, feed.

Embodiment

Be depicted as the wideband column antenna of a preferred embodiment of the present invention like accompanying drawing 2; Visible by figure; This wideband column antenna comprises insulating cover 04, general radio frequency connector (not shown), first branch 10, second branch 20, reveals copper district 50 and feed 70, this first, second branch, links to each other with corresponding electrical circuits separately; The mature technology that the circuit that links to each other is known for existing industry technology personnel is so will not set forth at this.It is emphasized that the present invention makes more miniaturization of antenna structure, processing cost reduces greatly, the communication bandwidth further expands technical characterictic; Show as: said first branch 10 vertically passes second branch, 20 centers and is provided with and is fixed on second branch, 20 geometrical central axis, and said first branch 10, second branch 20 are via feed 70 with reveal copper district 50 and be connected into one; Said feed 70 is connected with circuit on first branch 10 inner wires; Said dew copper district 50 is connected with the circuit of second branch, 20 lower ends; Said first branch 10 and second branch 20 insulate each other; Said feed 70 is plugged in and reveals in the copper district 50, and the load point of connecting wireless terminal product RF circuit through feed 70 other ends receives outside radio signal.Said dew copper district 50 is 50 ohm of radio frequency connector outer conductors; Said feed 70 is 50 radio frequency connector inner wires; Said first branch 10 is 50 ohm of radio frequency cables, and second branch 20 is a hollow copper bar;

Like Fig. 5, shown in Figure 6, be the voltage standing wave(VSW) and the return loss specific characteristic figure of wideband column antenna of the present invention.It is thus clear that the non-constant width of bandwidth of operation of this wideband column antenna can make the operating frequency of antenna scope break through to the GSM850/900/1800/1900/WCDMA frequency range from existing antenna technology GSM850/900/1800/1900.Also take into account the working frequency range of CDMA/GPS standard simultaneously.Satisfy present 3G frequency multiplexing technique fully.In addition, remarkable advantage such as that this antenna has is simple in structure, advantages of small volume, processing cost are low, and with the new ability of the wireless telecommunications of excellence is so can be widely used among the 2G, 3G wireless terminal product of standards such as GSM, CDMA, TDSCDMA, WCDMA.

As shown in table 1, the antenna structure of this kind form has high-gain, high radiation efficiency.Specifically at 2G, excellent radio-frequency performance is arranged under the 3G standard especially, said passband efficient reaches the energy conversion efficiency of 40%-70%.Nearly horizontal plane directive gain also has good performance.

Table 1: the nearly horizontal plane directive gain of wideband column antenna of the present invention, average gain, total energy efficiency conversion table

The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims

1. a wideband column antenna comprises first branch, second branch, dew copper district and the feed that coat in insulating cover, radio frequency connector, the insulating cover; Said first, second branch links to each other with corresponding electrical circuits separately respectively; It is characterized in that: said first branch vertically passes second fen branch center and is provided with and is fixed on second branch's geometrical central axis, and said first branch, second branch are via feed with reveal the copper district and be connected into one; Said feed is connected with circuit on first branch's inner wire; Said dew copper district is connected with the circuit of the second branch lower end; Said first branch and second branch insulate each other; Said feed is plugged in and reveals in the copper district, and the load point of connecting wireless terminal product RF circuit through the feed other end receives outside radio signal.

2. wideband column antenna according to claim 1 is characterized in that: said dew copper district is 50 ohm of radio frequency connector outer conductors.

3. wideband column antenna according to claim 1 is characterized in that: said feed is 50 ohm of radio frequency connector inner wires.

4. wideband column antenna according to claim 1 is characterized in that: said first branches into 50 ohm of radio frequency cables, and second branches into hollow copper bar.