CN2651948Y - Wide-frequency band antenna unit - Google Patents
Wide-frequency band antenna unit Download PDFInfo
- Publication number
- CN2651948Y CN2651948Y CN 03226481 CN03226481U CN2651948Y CN 2651948 Y CN2651948 Y CN 2651948Y CN 03226481 CN03226481 CN 03226481 CN 03226481 U CN03226481 U CN 03226481U CN 2651948 Y CN2651948 Y CN 2651948Y
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- China
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- radiating element
- length
- described radiating
- coaxial
- feed transducer
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Abstract
A broadband antenna unit for mobile communications is provided, which operates in a frequency range of 1,710 to 2,500MHz (covering frequency range of DCS 1,800MHz, PCS 1,900MHz, IMT-2000, 2.4GHz WLAN, etc.), and comprises an radiation unit, a feeding converter and a metal reflector. The obverse face of the radiation unit is provided with a mathematical fractal structure. A metal part on the inverse face of a microwave substrate is provided with a rectangular structure and is printed on the upper and the lower surface of the microwave substrate and fixed with the metal reflector through a medium bearing rod. In addition, the feeding converter is processed with metal sheets. A wide short path of the feeding converter is connected with the radiation unit and a narrow edge is communicated with a coaxial cable through a coaxial transformation and connected with an external communication element through a coaxial cable. The coaxial cable is provided with a coaxial connector. The utility model is characterized by wide operating frequency range, small size, nice appearance, lower cost, and easy mounting and utilization, etc.
Description
[technical field]
The utility model relates to a kind of all channel antenna unit, refers to be used for the indoor wall aerial of broadband of mobile communication indoor covering system especially.
[background technology]
In the information age of today, interpersonal distance has been shortened in the development of communication.The development of mobile communication is at a tremendous pace especially, and explosive growth appears in traffic carrying capacity and number of users year after year.With regard to the present present situation of China Mobile, two maximum operator---China Mobile and CHINAUNICOM is according to the requirement of business development, constantly in dilatation and the scope that increases covering.Its measure is: increase on the one hand the capacity of existing base station and at the number of outdoor increase base station and repeater, on the other hand, strengthen the dynamics of " mending blind " in the service area.There are many " blind areas " in the service area, such as: hotel, office building, market place builet below the ground, parking lot, tunnel, subway, station, harbour, airport or the like can be found everywhere.Because the continuous expansion of power system capacity is adopted microcellulor and Pico cell technology in the compact district, down town, makes the quantity of indoor " blind area " roll up.Operator adopts the form of indoor covering communication system, less investment, instant effect usually for improving the service quality of indoor " blind area ".
" domestic aerial " is the critical component of mobile communication indoor covering system, has broad application prospects.Wall aerial is exactly wherein a kind of.
Different operators adopts different communication bands, and same operator is for increasing power system capacity and improving service quality and adopt a plurality of communication bands.And in the prior art, the working band width of conventional half-wave radiation unit is approximately 15%, this at similar 1710MHz under the situation of the wideband section of 2500MHz, the standing wave and the directional diagram index that will realize antenna simultaneously have certain degree of difficulty, promptly allow to take into account 1～2 wave band but are cost with the sacrificial section performance index.Like this, when a plurality of wave bands of needs are worked simultaneously, need to adopt a plurality of antennas in the planning, therefore system design will become complicated and use inconvenience, and cost rises simultaneously.
[summary of the invention]
In order to improve the shortcoming of prior art, a purpose of the present utility model provides a kind of all channel antenna unit that is used for the mobile communication indoor covering system, can be used for the communication purposes of frequency ranges such as DCS1800MHz, DECT1800MHz, PCS1900MHz, IMT-2000,2.4GHz WLAN.
Another purpose of the present utility model provides a kind of directed wall hanging antenna element of broadband that is used for the mobile communication indoor covering system, index function admirable and compact size such as its standing-wave ratio and directional diagram, good looking appearance is cheap and easy to install.
In order to achieve the above object, the utility model is achieved in that provides a kind of all channel antenna unit that is used for mobile communication, can work in 1710-2500MHz (covering DCS1800MHz, PCS1900MHz, frequency ranges such as IMT-2000,2.4GHz WLAN), it is characterized in that forming by following each several part:
A radiating element part;
A feed transducer part;
A solid metal reflector;
The front of described radiating element is a mathematics fractal structure, described radiating element is divided into a rectangular configuration in the metal part of the reverse side of microwave substrate, described radiating element is printed on the upper and lower surface of microwave substrate, and described radiating element tightens together with solid metal reflector by the dielectric support rod;
Described feed transducer adopts sheet metal to process, the broadside short circuit of described feed transducer is connected on the described radiating element, the narrow limit of described feed transducer is connected on the coaxial cable by coaxial conversion, and links to each other with the PERCOM peripheral communication parts by the coaxial cable of band coaxial fitting.
The metal part of described radiating element in the front of microstrip substrate is divided into a foursquare mathematics fractal structure; Its component law is as follows: it is the square of a/3 that the length of side square that is a is divided into 9 onesize and length of sides, and the length of side that will be positioned at the center is that the square of a/3 is taken away; With each length of side of remainder be again the square of a/3 to be divided into 9 onesize and length of sides separately be the square of a/9, and be that the square of a/9 is taken away with the length of side that each is positioned at the center; Further by this rule, with each length of side of remainder be again the square of a/9 to be divided into 9 onesize and length of sides separately be the square of a/27, and be that the square of a/27 is taken away with the length of side that each is positioned at the center; With each length of side of remainder be at last the square of a/27 to be divided into 9 onesize and length of sides separately be the square of a/81, and be that the square of a/81 is taken away with the length of side that each is positioned at the center; Described radiating element is divided into a rectangular configuration in the metal part of the reverse side of microwave substrate, its length is 2a/3, width a/6, one length sides of the rectangle of the reverse side of described radiating element be positioned described radiating element the front foursquare midline position and be symmetrically arranged, another length edge of the rectangle of the reverse side of described radiating element is connected by the metallic vias short circuit in the microwave substrate with the front of described radiating element.
The distance of described radiating element and solid metal reflector is about the sixth of central task frequency wavelength; The foursquare length of side in the front of described radiating element is about 1/2nd of a central task frequency wavelength.
Described feed transducer is two sections ladder sheet metals, and the width that its broad is a section is about a/2, about length 2a/3, and narrower one section width is about a/10, length is about a/10; The widthwise edges short circuit that the broad of described feed transducer is one section is connected to the reverse side of described radiating element, the narrower one section widthwise edges of described feed transducer is connected on the coaxial fitting by coaxial conversion, and the coaxial cable that passes through the band coaxial fitting links to each other with the PERCOM peripheral communication parts, the sheet thicknesses of described feed transducer can be ignored with respect to the operation wavelength of antenna, for easy to connect, can there be certain additional bending at the two ends of described feed transducer.
Described solid metal reflector is a metallic plate, and its length and width is approximately 1 wavelength of central task frequency, and the thickness of metallic plate can be ignored with respect to the operation wavelength of antenna.
The connected mode of the ladder number of described feed transducer, width, length and the described radiating element of each ladder can be adjusted and optimize, to realize best wideband impedance match effect.
Allow certain flange around the described solid metal reflector, and flange height all around and shape can be different.
Can add matching network between described feed transducer and the coaxial fitting to realize best matching effect.
The utility model provides a kind of broadband wall-mounted antenna that is used for the mobile communication indoor covering system, the communication purposes that can be used for a plurality of different operation frequency bands such as DCS, PCS, DECT, UMTS, IMT-2000, WLAN, and have index function admirables such as standing-wave ratio and directional diagram, compact size, good looking appearance, characteristics cheap and easy to install.
Below in conjunction with drawings and the specific embodiments the utility model is further described in more detail:
[description of drawings]
Fig. 1 is a three-dimensional structure schematic diagram of the present utility model.
Fig. 2 is an end view of the present utility model.
Fig. 3 is a radiating element front elevation of the present utility model.
Fig. 4 is radiating element reverse side figure of the present utility model.
Fig. 5 is the utility model feed conversion portion schematic three dimensional views figure.
Should note the identical reference number composed component identical that use in the accompanying drawings with symbolic representation.
[embodiment]
See also Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a preferred embodiment of the present utility model adopts following steps to be achieved: 02 is antenna radiation unit; 12 is the antenna radiation unit front; 22 is the antenna radiation unit reverse side; 03 is the feed transducer; Antenna radiation unit is printed on microwave-medium substrate 02 upper and lower surface; Microwave-medium substrate 02 is supported in the place ahead of solid metal reflector 01 by dielectric support rod 04.
The front 12 of radiating element and reverse side 22 are printed on the upper and lower surface of same microwave-medium substrate 02 respectively, the metal part of upper surface is divided into the front of radiating element, the metal part of lower surface is divided into the reverse side of radiating element, and upper and lower surface links together by the metallic vias in the microwave substrate 32.One end of feed transducer 03 is welded on the reverse side of radiating element, and the other end is connected with the inner wire of coaxial conversion head 05.
The distance H 2 of radiating element and solid metal reflector is designed to about the sixth of central task frequency wavelength; The foursquare width W 1 in radiating element front is designed to about 1/2nd of central task frequency wavelength; The width W 0 of solid metal reflector and length L 0 are designed to about a wavelength of central task frequency;
The length L 2 of the rectangle 22 of radiating element reverse side is designed to about the sixth of W1; Its width W 2 is designed to about 2/3rds of W1.The length L 2 of the rectangle 22 of radiating element reverse side and width W 2 can be adjusted and optimize by microwave CAD software, finally to realize that best wideband impedance match effect is a purpose.
The feed converter design is the sheet metal of two sections stepped change, for the ease of welding, a bit of 45 additional degree bending edges are arranged: 13 additional bendings for one section of broad at the two ends of two joint ladder copper sheets, 23 is narrower one section additional bending, one section additional bending 13 of its broad is welded on the reverse side of radiating element, and narrower one section additional bending 23 is connected with the inner wire of coaxial conversion head 05.The Thickness Design of the sheet metal of feed transducer is the copper sheet of 0.5mm.The number of width W 3, W4 and the ladder of length L 3, L4 and each section of each section of feed transducer can be adjusted and optimizes by microwave CAD software, finally to realize that best wideband impedance match effect is a purpose.
So, according to above-mentioned design principle, by adjusting the radiating element and the distance of solid metal reflector, the foursquare length of side in radiating element front, adjust the length and the width of the rectangle of radiating element reverse side, adjust the length and the width of feed transducer, adjust length, width, the hop count of microstrip-fed line, adjust the height and the shape of length, width and the peripheral flanging of solid metal reflector, finally can realize best wideband impedance match effect.
By the indoor wall aerial sample that this embodiment constitutes, in a plurality of wave bands, form the pattern characteristics of directed radiation, the coverage property that its actual measurement gain is about the preceding spatial domain of 6dBi is fine, and corresponding maximum standing-wave ratio is less than 1.4.This embodiment can satisfy the requirement of mobile communication system well.
Find out to have simple and compact for structure and high performance advantage easily, and be easy to make, cheaply and conveniently install and use according to this antenna of the utility model manufacturing.
As mentioned above, although represented and described the utility model with reference to specific preferred embodiment, but it shall not be construed as the restriction to the utility model self, those skilled in the art should be understood that, under the prerequisite of the spirit and scope of the present utility model that do not break away from the claims definition, can make various variations in the form and details to it.Appending claims has covered all such changes and modifications in the utility model spirit and scope.
Claims (7)
1, a kind of all channel antenna unit can work in 1710-2500MHz (covering DCS1800MHz, PCS1900MHz, frequency ranges such as IMT-2000,2.4GHz WLAN) frequency range, it is characterized in that comprising following each several part:
A radiating element part;
A feed transducer part;
A solid metal reflector;
The metal part of described radiating element in the front of microwave substrate is divided into a square structure, described radiating element is divided into a rectangular configuration in the metal part of the reverse side of microwave substrate, described radiating element is printed on the upper and lower surface of microwave substrate, and described radiating element tightens together with solid metal reflector by the dielectric support rod;
Described feed transducer adopts sheet metal to process, the broadside short circuit of described feed transducer is connected on the described radiating element, the narrow limit of described feed transducer is connected on the coaxial cable by coaxial conversion, and links to each other with the PERCOM peripheral communication parts by the coaxial cable of band coaxial fitting.
2, all channel antenna according to claim 1 unit, it is characterized in that: described radiating element is in the square-shaped metal part in the front of microstrip substrate, its center is provided with the hole of 1/9 size, be distributed with the hole of 8 1/81 sizes around the hole of 1/9 size symmetrically and evenly, be distributed with the hole of 8 1/729 sizes around the hole of each 1/81 size symmetrically and evenly, be distributed with the hole of 8 1/6561 sizes around the hole of each 1/729 size symmetrically and evenly; Described radiating element is in the rectangular metal part of the reverse side of microwave substrate, its length be described radiating element the square-shaped metal part length of side in the front of microstrip substrate 2/3, width is 1/6 of the described length of side, one length sides of the rectangle of the reverse side of described radiating element be positioned described radiating element the front foursquare midline position and be symmetrically arranged, another length edge of the rectangle of the reverse side of described radiating element is connected by the metallic vias short circuit in the microwave substrate with the front of described radiating element.
3, all channel antenna according to claim 1 unit, it is characterized in that: the distance of described radiating element and solid metal reflector is about the sixth of central task frequency wavelength; The foursquare length of side in the front of described radiating element is about 1/2nd of a central task frequency wavelength.
4, all channel antenna according to claim 1 unit, it is characterized in that: described feed transducer is two sections ladder sheet metals, the width that its broad is one section be described radiating element the square-shaped metal part length of side in the front of microstrip substrate about 1/2, the described length of side of length about 2/3, narrower one section width be the described length of side about 1/10, length is about 1/10 of the described length of side; The widthwise edges short circuit that the broad of described feed transducer is one section is connected to the reverse side of described radiating element, the narrower one section widthwise edges of described feed transducer is connected on the coaxial fitting by coaxial conversion, and the coaxial cable that passes through the band coaxial fitting links to each other with the PERCOM peripheral communication parts, the sheet thicknesses of described feed transducer can be ignored with respect to the operation wavelength of antenna, for easy to connect, the two ends of described feed transducer are provided with additional bending.
5, all channel antenna according to claim 1 unit, it is characterized in that: described solid metal reflector is a metallic plate, and its length and width is approximately 1 wavelength of central task frequency, and the thickness of metallic plate can be ignored with respect to the operation wavelength of antenna.
6, all channel antenna according to claim 1 unit is characterized in that: allow certain flange around the described solid metal reflector, and flange height all around and shape can be different.
7, all channel antenna according to claim 1 unit is characterized in that: additional between described feed transducer and the coaxial fitting have matching network to realize best matching effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226481 CN2651948Y (en) | 2003-05-28 | 2003-05-28 | Wide-frequency band antenna unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03226481 CN2651948Y (en) | 2003-05-28 | 2003-05-28 | Wide-frequency band antenna unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651948Y true CN2651948Y (en) | 2004-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03226481 Expired - Lifetime CN2651948Y (en) | 2003-05-28 | 2003-05-28 | Wide-frequency band antenna unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651948Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101699660A (en) * | 2009-09-01 | 2010-04-28 | 中国电子科技集团公司第五十四研究所 | High gain ultra-wide wave beam antenna |
| CN101051706B (en) * | 2007-05-09 | 2012-05-09 | 西安海天天线科技股份有限公司 | Wide band air feedback unit for mobile communication base station antenna |
| WO2013143485A1 (en) * | 2012-03-30 | 2013-10-03 | Liu Zhijia | Ultra high frequency tag aerial based on fractal processing |
| CN104466383A (en) * | 2015-01-05 | 2015-03-25 | 六盘水师范学院 | Multi-band frequency and high-gain quasi-fractal antenna |
| CN105425322A (en) * | 2015-11-19 | 2016-03-23 | 华中科技大学 | All-optical wavelength converter |
-
2003
- 2003-05-28 CN CN 03226481 patent/CN2651948Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051706B (en) * | 2007-05-09 | 2012-05-09 | 西安海天天线科技股份有限公司 | Wide band air feedback unit for mobile communication base station antenna |
| CN101699660A (en) * | 2009-09-01 | 2010-04-28 | 中国电子科技集团公司第五十四研究所 | High gain ultra-wide wave beam antenna |
| CN101699660B (en) * | 2009-09-01 | 2015-11-25 | 中国电子科技集团公司第五十四研究所 | A kind of high gain ultra-wide wave beam antenna |
| WO2013143485A1 (en) * | 2012-03-30 | 2013-10-03 | Liu Zhijia | Ultra high frequency tag aerial based on fractal processing |
| US9705178B2 (en) | 2012-03-30 | 2017-07-11 | Zhijia Liu | Ultra high frequency tag aerial based on fractal processing |
| CN104466383A (en) * | 2015-01-05 | 2015-03-25 | 六盘水师范学院 | Multi-band frequency and high-gain quasi-fractal antenna |
| CN104466383B (en) * | 2015-01-05 | 2018-08-14 | 六盘水师范学院 | A kind of multiband, the quasi- fractal antenna of high-gain |
| CN105425322A (en) * | 2015-11-19 | 2016-03-23 | 华中科技大学 | All-optical wavelength converter |
| CN105425322B (en) * | 2015-11-19 | 2017-06-16 | 华中科技大学 | A kind of AOWC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130528 Granted publication date: 20041027 |