CN104681938A - Improved W-shaped resonant cavity ultra-wide band antenna - Google Patents
Improved W-shaped resonant cavity ultra-wide band antenna Download PDFInfo
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- CN104681938A CN104681938A CN201310617235.0A CN201310617235A CN104681938A CN 104681938 A CN104681938 A CN 104681938A CN 201310617235 A CN201310617235 A CN 201310617235A CN 104681938 A CN104681938 A CN 104681938A
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Abstract
The invention discloses an improved W-shaped resonant cavity ultra-wide band antenna with a notch characteristic. The improved W-shaped resonant cavity ultra-wide band antenna comprises a medium base plate (1) and a radiation unit (2), wherein the radiation unit is in a reversed T-shaped structure and an upward bent groove (3) is formed in two ends of the reversed T-shaped structure; the improved W-shaped resonant cavity ultra-wide band antenna further comprises a micro-band transmission wire (4), a W-shaped metal structure resonant cavity (5) and a grounding surface (6). The radiation unit, the micro-band transmission wire and the W-shaped resonant cavity are printed on the upper surface of the medium base plate; the radiation unit is located in the middle of the medium base plate; the W-shaped metal structure resonant cavity is located on the left side of the micro-band transmission wire; the reversed T-shaped structure and the upward bent groove in the two ends of the reversed T-shaped structure are formed in the radiation unit. The improved W-shaped resonant cavity ultra-wide band antenna has a compact structure and a small size; the size and position of the W-shaped metal structure resonant cavity are changed so that the notch frequency can be adjusted; the problem of same frequency interference of an ultra-wide band communication system is solved.
Description
Technical field
The present invention relates to a kind of antenna, the W type resonant cavity ultra-wideband antenna particularly improved.
Background technology
Since FCC (Federal Communications Commission) allows the commercialization of 3.1-10.6GHz frequency range, super-broadband tech obtains at academic and commercial field and broadly pays close attention to, higher requirement be it is also proposed to ultra-wideband antenna simultaneously, make it to have more challenge than the design of traditional antenna, be mainly manifested in: antenna is except needing to have the working band (being generally 3.1GHz-10.6GHz) of ultra-wide, also want to keep the compact of size, weight frivolous, and be easy to integrated with plane large-scale circuit.
But the frequency band shared by current ultra-wideband communications and WLAN (wireless local area network) have shared part, therefore need the antenna designed to reduce and bring interference to WLAN (wireless local area network), the ultra-wideband antenna that design has trap characteristic becomes the focus studied at present.If do not have suitable design to come harmonic inhabitation resonance and parasitic emission, antenna produces electromagnetic interference by neighbouring equipment, jeopardizes the normal work of system itself and contiguous system, particularly causes interference to the LAN system used at present.Add the method that filter is the solution problems the most often used, but often cause antenna and microwave circuit not to mate, even reduce the overall efficiency of system, therefore design has the resonant cavity ultra-wideband antenna based on W shape structure of trap characteristic is one of important method of head it off, solves the problem of the Structure and energy more complicated of current antenna simultaneously.
Summary of the invention
The object of this invention is to provide a kind of structure simple, compact, the ultra-wideband antenna with trap characteristic of broader bandwidth, this antenna can be used in the military equipments such as electronics investigation, electronic countermeasures and civil equipment, reduces broadband intercommunication microwave access WiMAX(3.3 ~ 3.6GHz).
Technical solutions according to the invention are:
The W type resonant cavity ultra-wideband antenna improved, it is characterized in that, composition comprises: medium substrate (1), radiating element (2), inverted T-shape structure on radiating element and the two ends of inverted T-shape structure are upwards curved again selects groove (3), microstrip transmission line (4) W type metal structure resonant cavity (5), ground plane (6).
The W type resonant cavity ultra-wideband antenna of described improvement, is characterized in that, W type structural metal resonant cavity.
The described resonant cavity ultra-wideband antenna based on W type structure, is characterized in that: on the left of described microstrip transmission line, the Metal cavity of W type.
Concrete structure:
(1) the present invention is inverted T-shape structure at the fluting of radiating element, and the two ends of T-shaped structure are upwards curved again selects, and makes antenna have two trap characteristic at frequency range 3.1GHz ~ 10.6GHz.
(2) of the present inventionly on radiating element, etch inverted T-shape structure and the upwards curved again groove in the two ends of T-shaped structure, by regulating the adjusted size trap frequency of inverted T-shape groove, realizing ultra-wideband communications and disturbing the compatible communication for coordination of communication system mutually.
(3) Metal cavity on the left of microwave transmission line with W type of the present invention, can adjust trap frequency by regulating the size of W type structure.
(4) inventive antenna single layer printed circuit plate technique can realize, simple and compact for structure, compact, and easy to process, cost is low, is convenient to batch production.
Accompanying drawing explanation
Fig. 1 is front elevation of the present invention;
Fig. 2 is side view of the present invention;
Embodiment
Antenna example:
As shown in Figure 1, there is the resonant cavity ultra-wideband antenna based on W type of trap characteristic, its composition comprises: medium substrate (1), radiating element (2), inverted T-shape structure on radiating element and the two ends of inverted T-shape structure are upwards curved again selects groove (3), microstrip transmission line (4) W type metal structure resonant cavity (5), ground plane (6).Described radiating element, microstrip transmission line, W type metal structure resonant cavity are all printed on medium substrate upper surface, described radiating element is positioned at the middle part of medium substrate, W type metal structure resonant cavity is positioned on the left of microstrip transmission line, and the structure grooves of falling T is opened on radiating element.
Described medium substrate is polytetrafluoroethylene material, thickness 0.787mm, and relative dielectric constant is 2.2.
Described radiating element has inverted T-slot structure.
Described microstrip transmission line characteristic impedance 50 Ω, live width 5mm.
Antenna at broadband intercommunication microwave access (3.5GHz), thus make the ultra-wideband communication devices of time antenna can with disturb the compatible communication for coordination of communication system mutually.
Resonant cavity ultra-wideband antenna based on W type structure has good trap characteristic.The impedance bandwidth of this antenna standing wave ratio (being less than or equal to 2:1) is 3.1-11.4GHz, meet the demand of ultra-wideband communications, between 3.3-3.6GHz, there is trap characteristic, can eliminate or reduce the electromagnetic interference of ultra-wideband antenna to WLAN (wireless local area network), trap characteristic is primarily of inverted T-slot and the contribution of W type resonant cavity.
Claims (2)
1. the W type resonant cavity ultra-wideband antenna improved, it is characterized in that, composition comprises: medium substrate (1), radiating element (2), inverted T-shape structure on radiating element and the two ends of inverted T-shape structure are upwards curved again selects groove (3), microstrip transmission line (4) W type metal structure resonant cavity (5), ground plane (6).
2. the W type resonant cavity ultra-wideband antenna of improvement according to claim 1, is characterized in that, W type structural metal resonant cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617235.0A CN104681938A (en) | 2013-11-27 | 2013-11-27 | Improved W-shaped resonant cavity ultra-wide band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617235.0A CN104681938A (en) | 2013-11-27 | 2013-11-27 | Improved W-shaped resonant cavity ultra-wide band antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681938A true CN104681938A (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310617235.0A Pending CN104681938A (en) | 2013-11-27 | 2013-11-27 | Improved W-shaped resonant cavity ultra-wide band antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN104681938A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876950A (en) * | 2015-12-14 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new Ultrawide-band trap antenna based on W shape cuttings |
| CN112542690A (en) * | 2020-12-10 | 2021-03-23 | 福瑞泰克智能系统有限公司 | Adjustable microstrip antenna and method for adjusting performance of microstrip antenna |
-
2013
- 2013-11-27 CN CN201310617235.0A patent/CN104681938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876950A (en) * | 2015-12-14 | 2017-06-20 | 哈尔滨飞羽科技有限公司 | A kind of new Ultrawide-band trap antenna based on W shape cuttings |
| CN112542690A (en) * | 2020-12-10 | 2021-03-23 | 福瑞泰克智能系统有限公司 | Adjustable microstrip antenna and method for adjusting performance of microstrip antenna |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |