CN202871969U - Indoor low-profile ceiling antenna - Google Patents
Indoor low-profile ceiling antenna Download PDFInfo
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- CN202871969U CN202871969U CN201220549939XU CN201220549939U CN202871969U CN 202871969 U CN202871969 U CN 202871969U CN 201220549939X U CN201220549939X U CN 201220549939XU CN 201220549939 U CN201220549939 U CN 201220549939U CN 202871969 U CN202871969 U CN 202871969U
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- radiating element
- indoor low
- ceiling mount
- slab
- impedance matching
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Abstract
The utility model relates to an indoor low-profile ceiling antenna which is used for mobile communication. The indoor low-profile ceiling antenna comprises the following components: a metal monopole radiation unit, a grounding metal reflecting plate, a microstrip impedance matching network which is composed of microstrip metal sheets and is parallelly placed above the grounding metal reflecting plate, and an end point which is provided at one end of the microstrip impedance matching network and is used for conversion and connection between the microstrip impedance matching network and a coaxial cable. The radiation unit is vertically placed above the microstrip impedance matching network. Furthermore the feeding point of the radiation unit is connected with one end of the microstrip impedance matching network, wherein, the indoor low-profile ceiling antenna further comprises a single-surface copper-plated medium plate which is parallel with the grounding metal plate and is vertically connected with the top end of the radiation unit through a coupling loading form. The indoor low-profile ceiling antenna has the following advantages: smaller size, more stable performance, and high suitability for indoor installation.
Description
Technical field
The utility model relates to a kind of domestic aerial, relates in particular to a kind of indoor low section ceiling mount antenna for mobile communication.
Background technology
Along with increase at full speed and the skyscraper of mobile subscriber in the city are more and more, traffic density and covering require also constantly to rise.These architectural scale are large, quality good, and mobile telephone signal is had very strong shielding action.Under the environment such as the low layer of building, market place builet below the ground, underground parking, a little less than the mobile communication signal, mobile phone can't normally use, and has formed blind area and the shadow region of mobile communication; At intermediate floor, because overlapping from different base station signal on every side produces ping-pong, mobile phone frequently switches, even call drop, has had a strong impact on the normal use of mobile phone; At the high level of building, owing to be subjected to the limitation in height of antenna for base station, can't normally cover, also be the blind area of mobile communication.In addition, in some building, although mobile phone can normal talking, user density is large, and BTS channel is crowded, the mobile phone difficulty of reaching the standard grade.The network coverage of mobile communication, capacity, quality are the key factors that operator obtains competitive advantage.The network coverage, network capacity, network quality have fundamentally embodied mobile network's service level, are the themes of all mobile network optimization work.Indoor covering system produces under this background just.
" domestic aerial " then is the critical component of indoor covering system, has broad application prospects, and ceiling mount antenna is exactly wherein commonly use a kind of, and the most frequently used in ceiling mount antenna be exactly to adopt perpendicular polarization monopole radiating element to realize.
In the prior art, such as Chinese CN02272381.1 patent, although the height of the Monopole radiating element that its disclosed ceiling mount antenna can routine is set to about 1/5th wavelength of lowest operating frequency, and can adapt to multiband network service requirement, still can't satisfy the domestic aerial miniaturization, beautify the requirement with hiddenization.In addition, this patent has been used the metal-loaded sheet, this sheet metal and radiating element are electrically connected, this load mode has a significant impact the radiance of monopole, directly causes the omni-directional variation, in the situation of restriction metallic reflection board size (especially the metallic reflection plate is less), the radiation omni-directional of Monopole is poorer, directional diagram even arranged zero point when high frequency points simultaneously, can affect antenna in radiance and the impedance operator of high band.
The utility model content
The purpose of this utility model is that the indoor low section ceiling mount antenna that a kind of size is smaller and more exquisite, performance is more stable is provided.
For reaching above technical purpose, the technical solution adopted in the utility model is as follows:
A kind of indoor low section ceiling mount antenna, be used for mobile communication, it comprises metal monopole radiating element, earthing metallic reflection plate, little little band impedance matching network with the described metallic reflection plate of being placed in parallel in of sheet metal composition top, be positioned at described little with impedance matching network one end for described little end points that is connected with the coaxial cable phase transformation with impedance matching network, described radiating element vertically places described little top with impedance matching network, and the distributing point of described radiating element is connected with a described little end with impedance matching network, wherein, comprise that also the single face that is parallel to described grounding plate and is vertically connected at described radiating element top with the coupling loading form covers the copper dielectric-slab.
Further, the described copper dielectric-slab main body of covering is the individual layer epoxy plate; This dielectric-slab is circle, ellipse or polygon.Further, the described copper dielectric-slab that covers is provided with confession and the close-connected through hole of described radiating element; The copper layer that covers of described dielectric-slab is being established a rectangular aperture around described through hole place; More preferably, the long 0.5-5mm of described rectangular aperture minor face, long length of side 10-25mm; More preferably, described rectangular aperture is arranged on and departs from the described copper dielectric-slab longitudinally center of covering.Particularly, the described copper dielectric-slab that covers is the lengthwise rectangular slab, and the long limit of the opening that connects with described radiating element is parallel with described rectangular slab minor face.Selectively, the described longitudinally dual-side that covers the copper dielectric-slab is provided with the indent semicircular opening of installing for convenient at the described rectangular aperture of alignment place.
Further, described radiating element is the copper sheet that a thickness does not affect described antenna radiation performance; The left and right directions length of described radiating element and above-below direction length are about 1/10th wavelength of described the first mid-band frequency; Described radiating element left and right directions is symmetrical, and above-below direction is narrow up and down, and is middle wide.The distributing point of described radiating element is arranged on its bottom centre position.
Further, described littlely count from the distributing point of described radiating element with impedance matching network at first is one section microstrip line of connecting with radiating element, then is one section parallel connection short circuit line, then is some transmission lines with different in width and length series connection.
Further, described metallic reflection plate is the lengthwise rectangular metal sheet that a thickness does not affect described antenna radiation performance, and length is 100-250mm.
More preferably, comprise that also being positioned at described metallic reflection plate top seals described radiating element and little dielectric radome with impedance matching network.
Compared with prior art, the utlity model has following advantage: according to the parasitic couplings loading principle, load the coupling size by regulating, the impedance bandwidth of both having regulated antenna has also reduced the impact of load plate on the monopole directional diagram, thereby guarantees its omni-directional; Introduce asymmetric loading, the impedance behavior of regulating antenna by asymmetric loading is optimized the standing wave of antenna; Under the adjusting of coupling loading and asymmetric loading, realized that ceiling mount antenna is about under 0.1 wavelength at the first band center frequency 880MHz place in maximum height limit, guaranteed the irradiation stability of 800MHz-960MHz and 1710MHz-2690MHz frequency range.
Description of drawings
Fig. 1 is the perspective view of the indoor low section ceiling mount antenna of the utility model.
Fig. 2 is the left view of the indoor low section ceiling mount antenna of the utility model, the structure of mainly showing radiating element.
Fig. 3 is the vertical view of the indoor low section ceiling mount antenna of the utility model, and main the displaying covered copper dielectric-slab and radiating element loading coupling unit structure.
Fig. 4 is the design circuit schematic diagram of the indoor low section ceiling mount antenna of the utility model.
Fig. 5 is the actual measurement antenna standing wave ratio curve chart of the indoor low section ceiling mount antenna of the utility model.
Fig. 6 is the radome three-dimensional structure diagram of the indoor low section ceiling mount antenna of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to figure 1, the metallic reflection plate 04 that the indoor low section ceiling mount antenna of the utility model comprises radiating principal 01, ground connection be connected described metallic reflection plate 04 on and little band impedance matching network of being connected with radiating principal 01 (indicate, lower with), wherein said radiating principal 01 comprise a laminar perpendicular polarization copper radiating element 02 and one and described radiating element 02 top single face connected vertically cover copper dielectric-slab 03.
Described metallic reflection plate 04 is rectangular metal plate, and its width is 40mm, and length is 190mm, and its thickness can be ignored with respect to operation wavelength.
Described radiating element 02 thick 0.5mm, its thickness can be ignored with respect to operation wavelength, as shown in Figure 2, described radiating element 02 is slightly less than 1/10th wavelength of the first mid-band frequency 880MHz at the width of left and right directions, and symmetrical at left and right directions, for slightly narrow up and down, the centre is slightly wide at above-below direction, and radiating element 02 is about 1/10th of the first mid-band frequency 880MHz operation wavelength at the height of above-below direction; Described radiating element 02 bottom is connected with described metallic reflection plate 04 so that described radiating element 02 is vertically fixed on metallic reflection plate 04 top; Described radiating element 02 and described little distributing point that is connected with impedance matching network are positioned at the center of this radiating element 02 bottom.
As shown in Figure 3, described single face covers copper dielectric-slab 03 to be made by the thick lengthwise rectangle individual layer epoxy plate of 0.5mm, and the described shape of covering copper dielectric-slab 03 is not limited to the lengthwise rectangle, according to the requirement of antenna working band, can be other polygon, even be circular or oval.The described through hole of copper dielectric-slab 03 by lengthwise that cover (indicates, lower with) with described radiating element 02 in the mode that is coupled but not the form vertical connection that direct physical is electrically connected, be that the described copper dielectric-slab 03 that covers is loaded on the described radiating element 02 by the form of closely cooperating, allow this radiating element 02 top to plant into this through hole and fixing therein; Described dielectric-slab 03 covers the copper layer at it and is positioned at and locates to establish a rectangular aperture 034 around the described through hole, this rectangular aperture 034 enough is electrically connected with described radiating element 02 direct physical avoiding greatly, particularly, the size of the broadside 031 of described opening 034 is about 0.5-5mm, the size of longitudinal edge 032 is about 10-25mm, described opening 034 is arranged on and describedly covers the longitudinally of copper dielectric-slab 03 but depart from center, to realize the asymmetrical loading to described radiating element 02, so that it is stable to adjust the impedance operator of antenna; In addition, the described copper dielectric-slab 03 that covers is at the semicircular opening 033 that is provided with a pair of toward each other indent corresponding to the place, longitudinally both sides of described opening 034, and it is to offer for convenient the installation, and described semicircular opening 033 does not affect the electrical property of described dielectric-slab 03.
Described littlely formed by the some little band sheet metal 11,12,13,14,15 by different in width and length of a bar printing on microwave substrate 17 with impedance matching network, comprise that in addition a section of being located at described matching network one end is connected to little on the coaxial cable by coaxial conversion and is with 16.With reference to figure 4, described littlely count from the distributing point of described radiating element 02 with impedance matching network at first is one section microstrip line 11 of connecting with radiating element, then is one section parallel connection short circuit line 12, then is series transmission lines 13,14 and 15 successively; Wherein, short-circuit line 12 can play anti-lightning strike effect, can protect the baseband equipment that links to each other with antenna; And the microstrip line of different in width and length is connected in series or in parallel, can finish the wideband impedance match of a plurality of wave bands, thereby realizes the purpose that radiating principal 01 is worked simultaneously at a plurality of wave bands.
As can be known above-mentioned, the indoor low section ceiling mount antenna of the utility model is according to described radiating element 02 and the parasitic couplings principle and the little band impedance matching principle that cover copper dielectric-slab 03, described radiating element 02, cover copper dielectric-slab 03, metallic reflection plate 04 and microstrip line and all can in the size range that limits, finely tune, make this antenna reach best Broadband Matching effect.Fig. 5 illustrates the standing-wave ratio of the indoor low section ceiling mount antenna actual measurement that present embodiment consists of with the curve of frequency change, can find out, this antenna frequency band has covered the first frequency band of 800-960MHz and the second frequency band of 1710-2690MHz substantially, wherein, the first frequency band has comprised a plurality of wave bands such as mobile communication CDMAone, GSM, and the second frequency band has comprised a plurality of wave bands such as mobile communication DCS, PCS, DECT, UMTS, IMT-2000.At these wave band standing internal waves than index less than 2.In addition, the gain that the omnidirectional radiation in multiband records is 2.3dBi, and the coverage property of signal is fine.
As shown in Figure 6; the indoor low section ceiling mount antenna of the utility model also comprises a cuboid dielectric radome 05; place the top of described metallic reflection plate 04, radiating element 02, metal-loaded sheet 03, little band impedance matching network are sealed wherein, to reach purpose dustproof, protection.
In sum, the indoor low section ceiling mount antenna stable radiation of the utility model, omni-directional are good, and have realized in appearance miniaturization, beautify and hiddenization, are particularly suitable for indoor location and use.
Above-described embodiment is the better execution mode of the utility model; but not merely be restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, all be included within the protection range of the present utility model.
Claims (13)
1. indoor low section ceiling mount antenna, be used for mobile communication, it comprises metal monopole radiating element, earthing metallic reflection plate, little little band impedance matching network with the described metallic reflection plate of being placed in parallel in of sheet metal composition top, be positioned at described little with impedance matching network one end for described little end points that is connected with the coaxial cable phase transformation with impedance matching network, described radiating element vertically places described little top with impedance matching network, and the distributing point of described radiating element is connected with a described little end with impedance matching network, it is characterized in that: comprise that also the single face that is parallel to described grounding plate and is vertically connected at described radiating element top with the coupling loading form covers the copper dielectric-slab.
2. indoor low section ceiling mount antenna as claimed in claim 1, it is characterized in that: the described copper dielectric-slab main body of covering is the individual layer epoxy plate.
3. indoor low section ceiling mount antenna as claimed in claim 2 is characterized in that: the described copper dielectric-slab that covers is circular, ellipse or polygon.
4. indoor low section ceiling mount antenna as claimed in claim 3 is characterized in that: described cover the copper dielectric-slab be provided with for and the close-connected through hole of described radiating element; The copper layer that covers of described dielectric-slab is being established a rectangular aperture around described through hole place.
5. indoor low section ceiling mount antenna as claimed in claim 4 is characterized in that: the long 0.5-5mm of described rectangular aperture minor face, long length of side 10-25mm.
6. indoor low section ceiling mount antenna as claimed in claim 5, it is characterized in that: described rectangular aperture is arranged on and departs from the described copper dielectric-slab longitudinally center of covering.
7. indoor low section ceiling mount antenna as claimed in claim 6, it is characterized in that: the described copper dielectric-slab that covers is the lengthwise rectangular slab, the long limit of the opening that connects with described radiating element is parallel with described rectangular slab minor face.
8. indoor low section ceiling mount antenna as claimed in claim 7 is characterized in that: the described longitudinally dual-side that covers the copper dielectric-slab is provided with the indent semicircular opening of installing for convenient at the described rectangular aperture of alignment place.
9. indoor low section ceiling mount antenna as claimed in claim 1, it is characterized in that: described radiating element is the copper sheet that a thickness does not affect described antenna radiation performance; The left and right directions length of described radiating element and above-below direction length are about 1/10th wavelength of described the first mid-band frequency; Described radiating element left and right directions is symmetrical, and above-below direction is narrow up and down, and is middle wide.
10. indoor low section ceiling mount antenna as claimed in claim 9, it is characterized in that: the distributing point of described radiating element is arranged on its bottom centre position.
11. indoor low section ceiling mount antenna as claimed in claim 1, it is characterized in that: described littlely count from the distributing point of described radiating element with impedance matching network, it at first is one section microstrip line of connecting with radiating element, then being one section parallel connection short circuit line, then is some transmission lines with different in width and length series connection.
12. indoor low section ceiling mount antenna as claimed in claim 1 is characterized in that: described metallic reflection plate is the lengthwise rectangular metal sheet that a thickness does not affect described antenna radiation performance, and length is 100-250mm.
13. indoor low section ceiling mount antenna as claimed in claim 12 is characterized in that: also comprise being positioned at the described metallic reflection plate top described radiating element of sealing and little dielectric radome with impedance matching network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220549939XU CN202871969U (en) | 2012-10-24 | 2012-10-24 | Indoor low-profile ceiling antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220549939XU CN202871969U (en) | 2012-10-24 | 2012-10-24 | Indoor low-profile ceiling antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871969U true CN202871969U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220549939XU Expired - Fee Related CN202871969U (en) | 2012-10-24 | 2012-10-24 | Indoor low-profile ceiling antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441324A (en) * | 2013-07-24 | 2013-12-11 | 珠海德百祺科技有限公司 | Antenna |
-
2012
- 2012-10-24 CN CN201220549939XU patent/CN202871969U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441324A (en) * | 2013-07-24 | 2013-12-11 | 珠海德百祺科技有限公司 | Antenna |
| CN103441324B (en) * | 2013-07-24 | 2016-08-10 | 江苏省东方世纪网络信息有限公司 | Antenna |
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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: 20180315 Address after: 510663 Guangdong city of Guangzhou Province Economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: Comba Telecom System (China) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200115 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee before: Jingxin Communication System (Guangzhou) 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: 20130410 Termination date: 20201024 |