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Small super-broadband graded monopolar gap antenna

A slot antenna and monopole technology, applied in the direction of antenna, resonant antenna, slender active unit end feed, etc., can solve the problem that the bandwidth cannot exceed 3:1, cannot cover the ultra-wideband communication frequency band, etc.

Active Publication Date: 2006-09-20
浙江三维通信研究院有限公司
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AI Technical Summary

Problems solved by technology

However, although the working performance of this type of antenna is good, the general working bandwidth cannot exceed 3:1, and cannot cover the frequency band of ultra-wideband communication

Method used

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  • Small super-broadband graded monopolar gap antenna
  • Small super-broadband graded monopolar gap antenna
  • Small super-broadband graded monopolar gap antenna

Examples

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Embodiment Construction

[0009] Control attached figure 1 , the characteristic of this structure is that the radiating element of the antenna is a gradually deformed monopole slot, and the angle (acute angle) between the gradient line and the vertical boundary lines on both sides is 25.5 degrees; in order to obtain better matching characteristics, the feeder adopts a step change structure , Transition directly to the tuning branch; the tuning branch is fork-shaped, and the distance between the centers of the two fingers should be controlled within a reasonable range (8.2-9.0mm) in order to control the input reflection characteristics.

[0010] Control attached figure 2 , which gives the measured input return loss of the antenna when the dielectric substrate 1 has a relative permittivity of 2.65 and a thickness of 1 mm. Considering the reduction of manufacturing cost, this kind of antenna should be made on cheap and easy-to-obtain low-permittivity dielectric materials, and the overall volume should n...

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Abstract

Characters are that antenna is prepared on base plate with low dielectric constant through PCB technique. Gradation structure of unipolar aperture as radiating element is fabricated on shielded conductor of microstrip line. Abrupt changed feed line and forked tuning branch section in proper size are fabricated on another side of shielded conductor to carry out wide band matched power feed. Included angle between gradation line of the said aperture and perpendicular borderline is 20-30 degree. Advantages are: simple structure, small size and easy of production. Size can be reduced further if medium with higher dielectric constant is adopted in design. Feeding structure is in favor of integrated design i.e. semiconductor technique realizes integration between antenna and circuits at front end. The disclosed antenna is suitable to small type communication device in ultra broadband.

Description

technical field [0001] The invention relates to a small microstrip printed antenna with ultra-wideband operating characteristics. The antenna has a small size and a very light weight, and can be used as a transceiver antenna for small ultra-wideband communication equipment, belonging to the microwave technology field. Background technique [0002] Due to its high data rate, simple system structure, and low cost, ultra-wideband communication technology has become a hot spot in the research of wireless communication technology. In the design of the UWB communication system, an important content is the design and realization of the UWB small antenna. The quality of the antenna design is directly related to the performance of the whole machine. An ultra-wideband antenna refers to an antenna with ultra-wideband operating characteristics. Generally speaking, an antenna with a relative bandwidth exceeding 25% belongs to this type of antenna. In its operating frequency band, this an...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q9/30H01Q13/08
Inventor 吕文俊程崇虎朱洪波
Owner 浙江三维通信研究院有限公司
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