CN200986968Y

CN200986968Y - Low Profile Dual Broadband Omnidirectional Ceiling Antenna

Info

Publication number: CN200986968Y
Application number: CN 200620155100
Authority: CN
Inventors: 陈晖�
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-22
Filing date: 2006-12-22
Publication date: 2007-12-05
Anticipated expiration: 2016-12-22

Abstract

The utility model relates to a two wide band qxcomm technology of low profile ceiling antenna, including irradiator (1), metal bottom plate (10) and antenna house (2), the bottom of irradiator is fixed on metal bottom plate (10), and antenna house (2) are fixed on metal bottom plate (10), and irradiator (1) is the inverse cone body, and the upper portion circumferential edge of inverse cone body outwards extends round flange ring (5), and this two wide band qxcomm technology of low profile ceiling antenna can work simultaneously in 806MHz ~ 960MHz and 1710MHz ~ 2500MHz band, and its voltage standing wave ratio all < 1.5. By adopting the structure and the mode, the low-profile double-broadband omnidirectional ceiling antenna which saves materials, reduces the cost and can expand other functions can be provided.

Description

Low profile double-wideband omnidirectional ceiling mount antenna

[technical field]

The utility model relates to a kind of ceiling mount antenna, particularly relates to two Wide-frequency antenna on ceiling of a kind of low profile, two broadband, low standing-wave ratio, is the improvement to existing Wide-frequency antenna on ceiling.

[background technology]

At present, indoor covering system and WLAN (wireless local area network) are the important component parts of Modern Mobile Communications Systems, and Wide-frequency antenna on ceiling wherein is indispensable device.Following intelligent ShangWu Building, exhibitions venue, high-end residential building etc. all can the installing broad-band ceiling mount antennas.

The radiant body of most of Wide-frequency antenna on ceiling has the employing truncated cone-shaped on the market, also have and adopt single cone or large and small cone, but the maximum of their voltage standing wave ratio can not reduce, voltage standing wave ratio can only be less than 1.8, especially in high frequency band such as 2400MHz～2500MHz, the antenna effect has reached the limit.Also have the deviation in roundness of the horizontal radiation pattern of most of Wide-frequency antenna on ceiling in broadband on the market poor, high-end particularly serious at frequency band, thus influenced the uniformity of indoor covering.

The applicant's Chinese patent 03267749.9 has disclosed frequency band in 800MHz～4000MHz, and voltage standing wave ratio is less than 1.5 Wide-frequency antenna on ceiling; But its radiant body is connected as a single entity by the inverted cone of the spherical crown on top and bottom and constitutes, the total height of radiant body is 40mm～70mm, it has solved the problems referred to above of most of Wide-frequency antenna on ceiling on the market, but it has two drawbacks: one is because spherical crown is arranged at radiant body top, total height is higher, need more material, make cost increase; It is difficult for to expand other function, as install the function of lamp additional in Wide-frequency antenna on ceiling two because radiant body seal.

[utility model content]

The utility model provides a kind of economical with materials to make cost reduce and can expand the low profile double-wideband omnidirectional ceiling mount antenna of other function at the above-mentioned defective of prior art.

In order to solve the problems of the technologies described above, the utility model comprises radiant body, base plate and radome, and the bottom of radiant body is fixed on the base plate, and radome is fixed on the base plate, and radiant body is an inverted cone, the upper circumferential edge of inverted cone stretch out one the circle flange ring.

The circular cone base angle of above-mentioned radiant body is 90 °～120 °, and the height of this radiant body is＜35mm.

The thickness of above-mentioned radiant body is 0.5mm～1.0mm.

Be provided with ground strip between above-mentioned flange ring and metal base plate.

Above-mentioned ground strip has three, is arranged on equably between flange ring and the metal base plate.

The thickness of above-mentioned ground strip is 0.5mm～1mm, and its width is 1mm～8mm.

Be provided with feeder pillar between above-mentioned radiant body bottom centre and the metal base plate center.

Above-mentioned radome is 30～70mm to the outside total height of metal base plate.

Above-mentioned low profile double-wideband omnidirectional ceiling mount antenna can be operated in 806MHz～960MHz and the 1710MHz～2500MHz frequency band simultaneously, its voltage standing wave ratio＜1.5.

The utility model is with respect to the beneficial effect of prior art: because radiant body top does not have spherical crown, total height has also reduced, and causes cost to reduce thereby material is reduced; And can in the radiant body that opens wide, other object be set, as lamp, make this low profile double-wideband omnidirectional ceiling mount antenna can expand other function.Therefore by adopting said structure and mode, just can provide a kind of economical with materials to make cost reduce and can expand the low profile double-wideband omnidirectional ceiling mount antenna of other function.

[description of drawings]

Fig. 1 is the cut-away view of the utility model band radome;

Fig. 2 is that the utility model is not with the perspective view of radome;

Fig. 3 is the voltage standing wave ratio of the utility model frequency band in 806MHz～960MHz the time;

Fig. 4 is the voltage standing wave ratio of the utility model frequency band in 1710MHz～2500MHz the time;

Fig. 5 is the elevation radiation patytern of the utility model frequency band on 806MHz;

Fig. 6 is the elevation radiation patytern of the utility model frequency band on 896MHz;

Fig. 7 is the elevation radiation patytern of the utility model frequency band on 960MHz;

Fig. 8 is the elevation radiation patytern of the utility model frequency band on 1710MHz;

Fig. 9 is the elevation radiation patytern of the utility model frequency band on 1990MHz;

Figure 10 is the elevation radiation patytern of the utility model frequency band on 2500MHz.

[embodiment]

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

By Fig. 1 and Fig. 2 as can be seen, the utility model comprises radiant body 1, metal base plate 10 and radome 2, the bottom of radiant body 1 is fixed on the metal base plate 10, radome 2 is fixed on the metal base plate 10, radiant body 1 is an inverted cone, the upper circumferential edge of inverted cone stretch out one the circle flange ring 5.

The circular cone base angle of above-mentioned radiant body 1 is 90 °～120 °, and the height of this radiant body is＜35mm.

The thickness of above-mentioned radiant body 1 is 0.5mm～1.0mm.

By Fig. 1 and Fig. 2 as can be seen, 10 of above-mentioned flange ring 5 and base plates are provided with ground strip 6; At the edge of flange ring 5, the other end is fixed on the metal base plate 10 with screw 61 and nut 62 as ground strip 6 one end solderings.(impedance matching of 806MHz～960MHz) improves the reception of this low profile double-wideband omnidirectional ceiling mount antenna, makes it little to the influence of antenna horizontal radiation pattern circularity can to improve low-frequency range.

As seen from Figure 2, above-mentioned ground strip 6 has three, is arranged on equably between flange ring 5 and the metal base plate 10.(impedance matching of 806MHz～960MHz) improves the effect that transmits and receives of this low profile double-wideband omnidirectional ceiling mount antenna more, and influence reaches littler to antenna horizontal radiation pattern circularity to make it can to improve low-frequency range more.

The thickness of above-mentioned ground strip is 0.5mm～1mm, and its width is 1mm～8mm.Ground strip 6 is narrower, makes the better effects if that transmits and receives of this double-wideband omnidirectional ceiling mount antenna.

By Fig. 1 and Fig. 2 as can be seen, be provided with feeder pillar 8 between above-mentioned radiant body 1 bottom centre and base plate 2 centers, feeder pillar 8 is tightened with flare nut 7 after passing radiant body 1 bottom centre hole, and feeder pillar 8 is affixed with metal base plate 10 centers.Adopt the effect that transmits and receives that to improve this double-wideband omnidirectional ceiling mount antenna in such a way.

Above-mentioned radome 2 is 30～70mm to the outside overall height H of metal base plate 10.

By Fig. 5 to Figure 10 as can be seen, above-mentioned low profile double-wideband omnidirectional ceiling mount antenna can be operated in 806MHz～960MHz and the 1710MHz～2500MHz frequency band simultaneously, and it is fine that it transmits and receives effect; By Fig. 3 and Fig. 4 as can be seen, its voltage standing wave ratio all＜1.5.

The above only is preferred embodiment of the present utility model, and all equalizations of being done with the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.

Claims

1. a low-profile double broadband omnidirectional ceiling antenna, comprising a radiator (1), a metal base plate (10) and a radome (2), the bottom of the radiator (1) is fixed on the metal base plate (10 ), the radome (2) is fixed on the metal base plate (10), and it is characterized in that: the radiator (1) is an inverted cone, and the upper peripheral edge of the inverted cone extends outward for a Turn the flange ring (5).

2. The low-profile dual broadband omnidirectional ceiling antenna according to claim 1, characterized in that: the base angle of the cone of the radiator (1) is 90°-120°, and the height of the radiator (1) is <35mm.

3. The low profile dual broadband omnidirectional ceiling antenna according to claim 1, characterized in that: the radiator (1) has a thickness of 0.5mm-1.0mm.

4. The low-profile dual-broadband omnidirectional ceiling antenna according to claim 1, characterized in that: a ground plate (6) is provided between the flange ring (5) and the metal bottom plate (10).

5. The low-profile dual broadband omnidirectional ceiling antenna according to claim 4, characterized in that: there are three ground plates (6), which are evenly arranged between the flange ring (5) and the metal base plate (10) between.

6. The low-profile dual broadband omnidirectional ceiling antenna according to claim 5, characterized in that: the thickness of the ground sheet (6) is 0.5mm-1mm, and the width is 1mm-8mm.

7. The low-profile dual broadband omnidirectional ceiling antenna according to claim 1, characterized in that: a feed post (8) is provided between the center of the bottom of the radiator (1) and the center of the metal base (10) ).

8. The low-profile dual broadband omnidirectional ceiling antenna according to claim 1, characterized in that: the total external height from the radome (2) to the metal bottom plate (10) is 30-70 mm.

9. The low-profile dual broadband omnidirectional ceiling antenna according to any one of claims 1 to 8, characterized in that: the low profile dual broadband omnidirectional ceiling antenna can work simultaneously at 806MHz-960MHz and 1710MHz-2500MHz In the frequency band, the voltage standing wave ratio is <1.5.