CN101197466B

CN101197466B - Ultra-wide band antenna

Info

Publication number: CN101197466B
Application number: CN2006101573379A
Authority: CN
Inventors: 秦祥宏; 邓嘉麟
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Nanning Fulian Fugui Precision Industrial Co Ltd
Priority date: 2006-12-06
Filing date: 2006-12-06
Publication date: 2012-03-14
Anticipated expiration: 2026-12-06
Also published as: CN101197466A

Abstract

The invention discloses an ultra-wide band antenna which is arranged on a substrate, wherein the substrate comprises a first surface and a second surface parallel to the first surface. The ultra-wide band antenna comprises a radiating part positioned on the first surface of the substrate, a feeding part connected with the radiating part and a grounded part positioned on the second surface of the substrate. The radiating part comprises a body and a connection part. Two ends of the connection part are respectively connected to the body and the feeding part. The body is provided with bending gaps. The gaps include a first section and a second section vertically communicated with the first section. The first section extends from the body side to another side, but not through the body. The second section extends from the end of the first section to the connection part, but not accessing the connection part. The inventive ultra-wide band antenna can work at a frequency range of 3.1GHz-10.6GHz, and satisfy the use demand of the ultra-wide band communication technique.

Description

UWB Antenna

Technical field

The present invention relates to a kind of antenna, particularly a kind of UWB Antenna.

Background technology

Along with popularizing of wireless home network equipment, the message transmission quantity between the wireless home network equipment also constantly increases, and the short-distance wireless communication technology of present stage more and more can't satisfy user's demand.Under this situation; UWB communication technology that can the high-speed transfer communication signal is arisen at the historic moment; Because the working frequency range of ultra wideband wireless telecommunications is restricted to 3.1GHz～10.6GHz, therefore just need a kind of UWB Antenna that can work in 3.1GHz～10.6GHz frequency range again.

Summary of the invention

For solving the deficiency that above-mentioned prior art exists, be necessary to provide a kind of UWB Antenna that can work in 3.1GHz～10.6GHz frequency range.

A kind of UWB Antenna is arranged on the substrate.Said substrate comprises first surface and the second surface parallel with said first surface.Said UWB Antenna comprises the Department of Radiation on the first surface that is positioned at said substrate, the feeding portion that links to each other with said Department of Radiation, and is positioned at the grounding parts of the second surface of said substrate.Said Department of Radiation comprises body and connecting portion, and said connecting portion two ends are connected with said body and feeding portion respectively.Said body is provided with the slit of bending, said slit comprise first section and with second section of said first section vertical connection.Said first section is to extend to another side from the side of said body, but non-through body.Said second section is extended to connecting portion from said first section end, but sensible connecting portion.

UWB Antenna of the present invention can work in 3.1GHz～10.6GHz frequency range, satisfies the instructions for use of UWB communication technology.

Description of drawings

Combine embodiment that the present invention is done further description with reference to the accompanying drawings.

Fig. 1 is the front schematic view of UWB Antenna of the present invention.

Fig. 2 is the reverse side sketch map of UWB Antenna of the present invention.

Fig. 3 is the size sketch map in the front of UWB Antenna among Fig. 1.

Fig. 4 is the size sketch map of UWB Antenna among Fig. 2.

Fig. 5 is the voltage standing wave ratio figure of UWB Antenna of the present invention.

Fig. 6 works in the radiation field directional diagram of 3.1GHz frequency for UWB Antenna of the present invention.

Fig. 7 works in the radiation field directional diagram of 7GHz frequency for UWB Antenna of the present invention.

Fig. 8 works in the radiation field directional diagram of 10.6GHz frequency for UWB Antenna of the present invention.

Embodiment

See also Fig. 1 and Fig. 2, be depicted as the sketch map of UWB Antenna of the present invention.UWB Antenna of the present invention is a printing type aerial, and is arranged on the substrate 50 of a rectangle, and it comprises Department of Radiation 10, is used for feeding portion 30 and grounding parts 40 to said Department of Radiation 10 input electromagnetic wave signals.Feeding portion 30 links to each other with Department of Radiation 10.

Substrate 50 comprises first surface 57 and second surface 58.In this execution mode, first surface 57 is parallel to each other with second surface 58.Wherein, feeding portion 30 and Department of Radiation 10 all are positioned at the first surface 57 of substrate 50, and grounding parts 40 is positioned at the second surface 58 of substrate 50.Substrate 50 also comprises base 52, the side 54 vertical with base 52, and the top margin 56 parallel with base 52.Grounding parts 40 all 52 extends to top margin 56 from the base with feeding portion 30.

Department of Radiation 10 comprises the body 12 of rectangle and the connecting portion 14 of rectangle.The long two ends of said connecting portion 14 link to each other with feeding portion 30 with body 12 respectively.Body 12 is provided with slit 15.Slit 15 comprises first section 152 vertical with feeding portion 30, and with second section 154 of first section 152 vertical connection.First section 152 side away from side 54 from body 12 extends towards another side, but non-through body 12.Second section 154 from first section 152 end extends to connecting portion 14, but not sensible connecting portion 14.UWB Antenna of the present invention is through said " L " shape slit 15 body 12 to be divided into first radiant body 122 and second radiant body 124, wherein second radiant body 124 with the mode of semi-surrounding around first radiant body 122.The mutual superposition of the frequency of said radiant body, thus the working frequency range of antenna integral body is widened, to satisfy the instructions for use of ultra wideband.In other embodiments, slit 15 also can be other bending shapes such as " V " shape, is divided into the body 12 with antenna to have difform part, and the working frequency range of antenna is widened.

Grounding parts 40 comprises first ground plane 46 of strip, and second ground plane 42 and the 3rd ground plane 44 that lay respectively at the rectangle at first ground plane, 46 two ends.The two ends of first ground plane 46 link to each other with the 3rd ground plane 44 with second ground plane 42 respectively.And first ground plane 46 overlaps with the projection section of feeding portion 30 on substrate 50.Second ground plane 42 and connecting portion 14 equate apart from the distance of side 54.

See also Fig. 3 and Fig. 4, in this execution mode, the long A of connecting portion 14 is 6mm, and wide a is 1.25mm.The long M of body 12 is 10.75mm, and wide m is 11mm.First section 152 of slit 15 is 1mm apart from body 15 and distance L 3 top margin 56 nearsides, and first section 152 long C is 10.5mm, and wide c is 0.1mm.Second section 154 long D is 7.5mm, and wide d is 0.1mm.The long Q of second ground plane 42 is 2.5mm, and wide q is 1.5mm.The long E of the 3rd ground plane 44 is 3mm, and wide e is 2.5mm.The long F of first ground plane 46 is 5mm, and wide f is 0.5mm.Connecting portion 14 is 4.5mm apart from the side of body 12 apart from K.

See also Fig. 5, shown in voltage standing wave ratio (Voltage StandingWave Ratio, the VSWR) chart of UWB Antenna of this execution mode.Can know that by figure when VSWR＜2, the operating frequency of the UWB Antenna of this execution mode satisfies instructions for use between 2.84GHz and 10.8GHz.

Please with reference to Fig. 6, Fig. 7 and Fig. 8, shown in be respectively the radiation field directional diagram that in electromagnetical analogies gained execution mode UWB Antenna works in 3.1GHz frequency, 7GHz frequency and 10.6GHz frequency.Can know that by figure the UWB Antenna of this execution mode meets instructions for use.

Claims

1. a UWB Antenna is arranged on the substrate, and said substrate comprises first surface and the second surface parallel with said first surface; Said UWB Antenna comprises the Department of Radiation on the first surface that is positioned at said substrate, the feeding portion that links to each other with said Department of Radiation, and is positioned at the grounding parts of the second surface of said substrate, it is characterized in that; Said Department of Radiation comprises body and connecting portion; Said connecting portion two ends are connected with said body and said feeding portion respectively, and said body is provided with the slit of bending, said slit comprise first section and with second section of said first section vertical connection; Said first section is to extend to another side from the side of said body; But non-through said body, said second section is extended to said connecting portion from said first section end, but sensible said connecting portion.

2. UWB Antenna as claimed in claim 1 is characterized in that, said body is a rectangle.

3. UWB Antenna as claimed in claim 1 is characterized in that, said first section vertical with said feeding portion.

4. UWB Antenna as claimed in claim 1 is characterized in that, said connecting portion is a rectangle.

5. UWB Antenna as claimed in claim 1 is characterized in that, said grounding parts comprises first ground plane of strip, and second ground plane and the 3rd ground plane that lay respectively at the rectangle at the said first ground plane two ends.

6. UWB Antenna as claimed in claim 5 is characterized in that, said first ground plane overlaps in projection on the said substrate and the projection section of said feeding portion on said substrate.