CN204857973U - Broadband directional diagram restructural antenna - Google Patents
Broadband directional diagram restructural antenna Download PDFInfo
- Publication number
- CN204857973U CN204857973U CN201520514689.XU CN201520514689U CN204857973U CN 204857973 U CN204857973 U CN 204857973U CN 201520514689 U CN201520514689 U CN 201520514689U CN 204857973 U CN204857973 U CN 204857973U
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- CN
- China
- Prior art keywords
- directional diagram
- broadband
- radiating element
- microstrip line
- dipole
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Abstract
The utility model discloses a broadband directional diagram restructural antenna, including the base plate, broadband coupling feed ba lun, the positive etching of base plate has two parallels of antenna, just mutual spaced owner radiating element, the back etching broadband coupling feed ba lun of base plate, these two parallels, and each other spaced owner radiating element's tip respectively be equipped with a pair of " L " type dipole radiating element that buckles, these two parallels, just mutual spaced owner radiating element's tip do not still respectively is equipped with an alignment with dipole unit. This broadband directional diagram restructural antenna has small, light in weight, simple structure, areflexia board, bandwidth broad, and can realize E face and H face directional diagram restructural simultaneously, is applicable to advantages such as military -civil radar, radio communication, intellectual weapon guidance field.
Description
Technical field
The utility model relates to antenna technical field, particularly relates to a kind of broadband directional diagram reconstructable aerial.
Background technology
In recent years, wireless communication technology obtains develop rapidly, and antenna is launched as a kind of being used for or being received the parts of radio wave, plays the important and pivotal role in a wireless communication system.The important directions of current development of wireless communication systems is Large Copacity, multi-functional, ultra broadband, for meeting this demand, the corresponding increase of the antenna amount that identical platform is carried, and the increase of number of antennas will cause the increase of system cost, weight, volume, also bring the problem of electromagnetic compatibility aspect simultaneously.In order to overcome this constraint, make whole communication system performance be subject to the restriction of antenna as few as possible, reconfigurable antenna arises at the historic moment.
Directional diagram is a key property of antenna, in the systems such as military-civil radar, intellectual weapon guidance, radio communication, require that antenna has directional diagram controllability, and therefore, directional diagram reconstructable aerial is the important directions of reconfigurable antenna research.Directional diagram reconstructable aerial refers to by introducing the CURRENT DISTRIBUTION that mems switch, diode switch or fet switch etc. change antenna in antenna radiator or antenna feed structure, thus changes the sensing of directional diagram.Directional diagram reconstructable aerial mostly comparatively is arrowband both at home and abroad at present, and structure is simple and the directional diagram reconstructable aerial of broader bandwidth is comparatively rare, therefore broadband directional diagram reconstructable aerial has the Research Significance of outbalance.Directional diagram reconstructable aerial can avoid signal disturbing, improves job security and saves system power, having great importance to the development of future wireless system.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, provides a kind of miniaturization, structure simply, broader bandwidth, can realize the broadband directional diagram reconstructable aerial of E face and the switching of H face directional diagram simultaneously.The printed bending dipole keeping to the side parallel by limit is to sub to forming with straight dipole.
The utility model is achieved through the following technical solutions:
A kind of broadband directional diagram reconstructable aerial, comprise substrate, broadband couple device feed Ba Lun, the front-side etch of described substrate has two of antenna parallel and spaced main radiating element, the back etched broadband couple device feed Ba Lun of described substrate; The end of these two parallel and spaced main radiating element is respectively provided with a pair " L " type bending dipole radiating element; The end of these two parallel and spaced main radiating element is also respectively provided with a pair straight dipole subelement respectively.
Described broadband couple device feed Ba Lun by being etched in the A microstrip line of substrate back, B microstrip line, C microstrip line form; C microstrip line connects A microstrip line and B microstrip line respectively by switch; C microstrip line connects feed port.
" L " type terminal open circuit minor matters are respectively provided with respectively at the two ends of A microstrip line and B microstrip line.
The parasitic element of " one " font is respectively provided with at the two ends of straight dipole subelement.
The line of rabbet joint is had between the dipole arm of these two parallel and spaced main radiating element.
Described switch is diode switch.
Respectively the identical length of " L " type bending dipole radiating element length and each straight dipole subelement is same.
The length of each parasitic element is 0.28 λ
0.
" L " type bending dipole radiating element length is 0.5 λ
0, wherein λ
0centered by the wavelength of free space corresponding to frequency 2.4GHz; The length of straight dipole subelement is 0.089 λ
0.
The line of rabbet joint between the dipole arm of these two parallel and spaced main radiating element is specifically of a size of: the length of groove is 18mm, and the width of groove is about 1.5mm.
The utility model, relative to prior art, has following advantage and effect:
The end of two parallel and spaced main radiating element of the present utility model is respectively provided with a pair " L " type bending dipole radiating element; Make than larger before and after antenna, more general straight dipole is to there being better directionality.
The end of two parallel and spaced main radiating element of the present utility model is also respectively provided with a pair straight dipole subelement respectively; Nearly 1 times of the directional diagram bandwidth broadning of such antenna, makes antenna have broadband character.
Broadband couple device feed Ba Lun of the present utility model by being etched in the A microstrip line of substrate back, B microstrip line, C microstrip line form; C microstrip line connects A microstrip line and B microstrip line respectively by switch; Like this, antenna has good impedance matching, achieves the balanced feeding that dipole is right.
The utility model is respectively provided with the parasitic element of " one " font at the two ends of straight dipole subelement; Like this, widened the impedance bandwidth of antenna, realized the relative bandwidth of 29.67%.
There is the line of rabbet joint between the dipole arm of the main radiating element that the utility model two is parallel and spaced, achieve medium substrate back side wide band balun to the couple feed of antenna.
In sum.The utility model antenna volume is little, lightweight, structure is simple, areflexia plate, impedance bandwidth and directional diagram bandwidth all wider and E face and H face directional diagram reconstructable can be realized simultaneously.Broadband feed Ba Lun combines with symmetrical " L " type bending dipole radiating element and achieves the covering of 2.01-2.71GHZ full frequency band, can realize front and back than the directional diagram reconstructable being greater than 10DB, and antenna average gain is about 5.5dBi at 2.18-2.71GHZ.Meet that miniaturization, structure are simple, impedance bandwidth and directional diagram bandwidth is all wider, the requirement of directional diagram reconstructable.
Accompanying drawing explanation
Fig. 1 is the utility model broadband directional diagram reconstructable aerial structural representation;
Fig. 2 is the utility model broadband directional diagram reconstructable aerial parameter schematic diagram;
Fig. 3 is the equivalent electric circuit of the utility model broadband directional diagram reconstructable aerial switch when closing;
Equivalent electric circuit when Fig. 4 is the directional diagram reconstructable aerial switch disconnection of the utility model broadband;
Fig. 5 is the return loss of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 1;
Fig. 6 is the E face figure (only got one of them frequency) of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 1;
Fig. 7 is the H face directional diagram (only got one of them frequency) of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 1;
Fig. 8 is the return loss of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 2;
Fig. 9 is the E face directional diagram (only get one of them frequency) of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 2;
Figure 10 is the H face directional diagram (only get one of them frequency) of the utility model broadband directional diagram reconstructable aerial switch when being in pattern 2;
Figure 11 is the utility model broadband directional diagram reconstructable aerial, and front and back are than the change (in view of pattern 1 and pattern 2 are symmetrical, therefore only providing the curve chart of wherein a kind of pattern) with frequency.
Embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Fig. 1 to 11.A kind of broadband of the utility model directional diagram reconstructable aerial, comprise substrate 5, broadband couple device feed Ba Lun, the front-side etch of described substrate 5 has two of antenna parallel and spaced main radiating element, the back etched broadband couple device feed Ba Lun of described substrate 5; The end of these two parallel and spaced main radiating element is respectively provided with a pair " L " type bending dipole radiating element 1A, 1B; The line of rabbet joint is had between the dipole arm of these two parallel and spaced main radiating element.The line of rabbet joint between the dipole arm of these two parallel and spaced main radiating element is specifically of a size of: the length of groove is 18mm, and the width of groove is about 1.5mm.
The end of these two parallel and spaced main radiating element is also respectively provided with a pair straight dipole subelement 8A, 8B respectively.Parasitic element 2A, the 2B of " one " font is respectively provided with at the two ends of straight dipole subelement 8A, 8B.
Described broadband couple device feed Ba Lun is made up of A microstrip line 3A, B microstrip line 3B, C microstrip line 3C being etched in substrate back; C microstrip line 3C connects A microstrip line 3A and B microstrip line respectively by switch 6A, 6B; C microstrip line 3C connects feed port 7.Switch 6A, 6B adopt diode switch, realize directional diagram reconstructable by the state of control switch.
" L " type terminal open circuit minor matters 4A, a 4B is respectively provided with respectively at the two ends of A microstrip line 3A and B microstrip line 3B.Realize the feed to " L " type bending dipole radiating element.
Respectively the identical length of " L " type bending dipole radiating element 1A, 1B length and each straight dipole subelement 8A, 8B is same.Be specially: " L " type bending dipole radiating element 1A, 1B length is 0.5 λ
0, wherein λ
0centered by the wavelength of free space corresponding to frequency 2.4GHz; The length of straight dipole subelement 8A, 8B is 0.089 λ
0.
The length of each parasitic element 2A, 2B is 0.28 λ
0.
As shown in Figure 2, " L " type bending dipole radiating element 1A, 1B bending part length L1 is all equal is about 0.3 λ
0, arm lengths L3 is 0.1 λ
0, straight dipole subelement 8A, 8B length is about 0.089 λ
0, the coupling part length D2 that straight dipole subelement 8A, 8B and " L " type bend dipole radiating element 1A, 1B is about 5mm, and the length L2 of parasitic element 2A, 2B is about 0.28 λ
0, parasitic element and " L " type bends dipole radiating element 1A, 1B space D 1 and are about 8mm, and parasitic element width and " L " type bend that dipole radiating element 1A, 1B arm is wide is 2.8mm, wherein λ
0centered by the wavelength of free space corresponding to frequency 2.4GHz.Between the dipole arm of " L " type bending dipole radiating element 1A, 1B, the line of rabbet joint is just the same, and its length fl is 18mm, and width fw is 1.5mm.Being printed on broadband, medium substrate back side feed Ba Lun width bw is 1.5mm, and impedance matching L shape minor matters length bl and bl1 is 8mm.
Be carried in switch on wideband balun in the on-state its equivalent electric circuit as shown in Figure 3, resistance R
fbe 0.6 Ω, its equivalent electric circuit as shown in Figure 4 in the off state, electric capacity C
jfor 8000PF, resistance R
fbe 0.6 Ω, wherein C1 is the encapsulation electric capacity of diode, and L1 is the package inductance of diode.
By the state of control switch, directional diagram reconstructable can be realized.When antenna is in pattern 1 (seeing the following form), Antenna Operation frequency range and directional diagram are as shown in Fig. 5,6,7; When antenna is in pattern 2 (seeing the following form), Antenna Operation frequency range and directional diagram are as shown in Figure 8,9, 10, Figure 11 is than the change curve (in view of pattern one and pattern two are symmetrical, so repeat specification is not done by place) with frequency before and after antenna.
As mentioned above, this broadband directional diagram reconstructable aerial has that volume is little, lightweight, structure is simple, areflexia plate, broader bandwidth and can realize E face and H face directional diagram reconstructable simultaneously, is applicable to the advantages such as military-civil radar, radio communication, intellectual weapon guidance field.
Execution mode of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (10)
1. a broadband directional diagram reconstructable aerial, comprise substrate, broadband couple device feed Ba Lun, the front-side etch of described substrate has two of antenna parallel and spaced main radiating element, the back etched broadband couple device feed Ba Lun of described substrate, is characterized in that: the end of these two parallel and spaced main radiating element is respectively provided with a pair " L " type bending dipole radiating element (1A, 1B); The end of these two parallel and spaced main radiating element is also respectively provided with a pair straight dipole subelement (8A, 8B) respectively.
2. broadband according to claim 1 directional diagram reconstructable aerial, is characterized in that: described broadband couple device feed Ba Lun by being etched in the A microstrip line (3A) of substrate back, B microstrip line (3B), C microstrip line (3C) form; C microstrip line (3C) connects A microstrip line (3A) and B microstrip line (3B) respectively by switch (6A, 6B); C microstrip line (3C) connects feed port (7).
3. broadband according to claim 2 directional diagram reconstructable aerial, is characterized in that: be respectively provided with " L " type terminal open circuit minor matters (4A, 4B) respectively at the two ends of A microstrip line (3A) and B microstrip line (3B).
4. broadband according to claim 1 directional diagram reconstructable aerial, is characterized in that: the parasitic element (2A, 2B) being respectively provided with " one " font at the two ends of straight dipole subelement (8A, 8B).
5. broadband according to claim 1 directional diagram reconstructable aerial, is characterized in that: have the line of rabbet joint between the dipole arm of these two parallel and spaced main radiating element.
6. broadband according to claim 2 directional diagram reconstructable aerial, is characterized in that: switch (6A, 6B) is diode switch.
7. broadband according to any one of claim 1 to 6 directional diagram reconstructable aerial, is characterized in that: the identical length of each " L " type bending dipole radiating element (1A, 1B) length and each straight dipole subelement (8A, 8B) is same.
8. broadband according to claim 4 directional diagram reconstructable aerial, is characterized in that: the length of each parasitic element (2A, 2B) is 0.28 λ
0.
9. broadband according to claim 1 directional diagram reconstructable aerial, is characterized in that: " L " type bending dipole radiating element (1A, 1B) length is 0.5 λ
0, wherein λ
0centered by the wavelength of free space corresponding to frequency 2.4GHz; The length of straight dipole subelement (8A, 8B) is 0.089 λ
0.
10. broadband according to claim 5 directional diagram reconstructable aerial, is characterized in that: the line of rabbet joint between the dipole arm of these two parallel and spaced main radiating element is specifically of a size of: the length of groove is 18mm, and the width of groove is about 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514689.XU CN204857973U (en) | 2015-07-15 | 2015-07-15 | Broadband directional diagram restructural antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514689.XU CN204857973U (en) | 2015-07-15 | 2015-07-15 | Broadband directional diagram restructural antenna |
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|---|---|
| CN204857973U true CN204857973U (en) | 2015-12-09 |
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ID=54748496
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520514689.XU Expired - Fee Related CN204857973U (en) | 2015-07-15 | 2015-07-15 | Broadband directional diagram restructural antenna |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993254A (en) * | 2015-07-15 | 2015-10-21 | 华南理工大学 | Broadband directional pattern reconfigurable antenna |
| CN109066074A (en) * | 2018-07-23 | 2018-12-21 | 华南理工大学 | Directional diagram reconstructable aerial and communication equipment |
| CN109923736A (en) * | 2016-11-10 | 2019-06-21 | 康普技术有限责任公司 | With the stabilized lens antenna for base station of beamwidth in azimuth |
| CN110534896A (en) * | 2018-05-26 | 2019-12-03 | 广东延春高新材料科技股份有限公司 | Low density glass steel antenna house and its production technology |
| WO2020037662A1 (en) * | 2018-08-24 | 2020-02-27 | 深圳大学 | Dipole antenna array |
| WO2021000180A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Wifi antenna and wireless communication device |
| CN112701471A (en) * | 2020-11-27 | 2021-04-23 | 电子科技大学 | All-dielectric integrated ultra-wideband low-profile polymorphic conformal phased array antenna |
-
2015
- 2015-07-15 CN CN201520514689.XU patent/CN204857973U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993254A (en) * | 2015-07-15 | 2015-10-21 | 华南理工大学 | Broadband directional pattern reconfigurable antenna |
| CN104993254B (en) * | 2015-07-15 | 2018-01-16 | 华南理工大学 | A kind of broadband direction figure reconfigurable antenna |
| CN109923736A (en) * | 2016-11-10 | 2019-06-21 | 康普技术有限责任公司 | With the stabilized lens antenna for base station of beamwidth in azimuth |
| CN109923736B (en) * | 2016-11-10 | 2021-06-11 | 康普技术有限责任公司 | Lens base station antenna with azimuthal beamwidth stabilization |
| CN110534896A (en) * | 2018-05-26 | 2019-12-03 | 广东延春高新材料科技股份有限公司 | Low density glass steel antenna house and its production technology |
| CN109066074A (en) * | 2018-07-23 | 2018-12-21 | 华南理工大学 | Directional diagram reconstructable aerial and communication equipment |
| CN109066074B (en) * | 2018-07-23 | 2023-11-17 | 华南理工大学 | Directional diagram reconfigurable antenna and communication equipment |
| WO2020037662A1 (en) * | 2018-08-24 | 2020-02-27 | 深圳大学 | Dipole antenna array |
| WO2021000180A1 (en) * | 2019-06-30 | 2021-01-07 | 瑞声声学科技(深圳)有限公司 | Wifi antenna and wireless communication device |
| CN112701471A (en) * | 2020-11-27 | 2021-04-23 | 电子科技大学 | All-dielectric integrated ultra-wideband low-profile polymorphic conformal phased array antenna |
| CN112701471B (en) * | 2020-11-27 | 2022-06-03 | 电子科技大学 | All-dielectric integrated ultra-wideband low-profile polymorphic conformal phased array antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20151209 Termination date: 20180715 |