CN104821435A - Ultra-wideband antenna - Google Patents
Ultra-wideband antenna Download PDFInfo
- Publication number
- CN104821435A CN104821435A CN201510236119.3A CN201510236119A CN104821435A CN 104821435 A CN104821435 A CN 104821435A CN 201510236119 A CN201510236119 A CN 201510236119A CN 104821435 A CN104821435 A CN 104821435A
- Authority
- CN
- China
- Prior art keywords
- ultra
- feed line
- microstrip feed
- radiation arms
- wideband antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses an ultra-wideband antenna, comprising a medium substrate, a radiator, two main parasitic units, a microstrip feeder, and a coaxial connector. The medium substrate is provided with a first surface and a second surface which is opposite to the first surface. The radiator comprises a feed-in portion, and two radiation arms. The radiator and the two main parasitic units are arranged on the first surface. The microstrip feeder is arranged on the second surface in an L shape. The coaxial connector is fixedly arranged on the bottom of the medium substrate. The feed-in portion of the radiator and the vertical part of the microstrip feeder are electrically connected with the coaxial connector at the same time. Through arranging the two radiation arms which are distributed symmetrically, and forming a gradually changing gap between the two radiation arms, impedance characteristic of an antenna is improved, and impedance bandwidth of the antenna is broadened. Through forming at least a groove on the tail end of each radiation arm, high-frequency standing-wave ratio characteristic can be improved, and circumferential distribution of a plurality of groups of radiation arms is convenient.
Description
Technical field
The present invention relates to a kind of communication antenna, specifically relate to a kind of ultra-wideband antenna.
Background technology
The ultra-wideband antenna communication technology (UWB) typically refers to signal bandwidth and is greater than the radiotechnics that 1.5GHz or the bandwidth ratio ratio of centre frequency (deration of signal with) be greater than 25%.Ultra-wideband antenna is the critical component in super broad band radio communication system, and the performance of antenna will directly affect the performance of whole system.
Along with the progress of mobile communication technology, the swift and violent expansion of mobile Internet, the continuous dilatation of super broad band radio communication system, multiple types system is also deposited, the working frequency range of various standard also in continuous expansion, by early stage GSM 1800 (1710 ~ 1880MHz); PCS1850 ~ 1990MHz, UMTS 1920 ~ 2170MHZ, to the TD-SCDMA (1880 ~ 1920MHz, 2010 ~ 2025MHz, 2300 ~ 2400MHz) in mid-term; Wimax and TD-LTE communication band (2300 ~ 2690MHz), then LTE-A (3500MHz ~ 3600MHz) up till now, like this, cause antenna and corresponding number of devices to increase, increase the operation cost of telecom operators.
But, in prior art, the omnidirectional antenna be made up of half-wave dipole, bandwidth is partially narrow, as document 1. " A broadband printed dipole and aprinted array for base station applications " (IEEEAntennas and Propagation Society Internationalsymposium, 2008:1-4), the bandwidth of antenna model is 41%, document 2. " Printed broadband dipole antenna with tapered arms formulti-band applications " (Signals Systems andElectronics, International Symposium, 2010:1-3), antenna model bandwidth is 48%.And the bandwidth of 1.71-3.6GHz is more than 70%, for this reason, it is necessary for designing a kind of antenna meeting this frequency band.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention proposes a kind of ultra-wideband antenna, and impedance bandwidth is greater than 96%, and structure is simple, be easy to manufacture, also extend to other frequency band by suitable amendment.
Technical scheme of the present invention is achieved in that
A kind of ultra-wideband antenna, comprise medium substrate, radiant body, two main parasitic elements, microstrip feed line and coaxial connectors, described medium substrate has first surface and second surface corresponding thereto, described radiant body comprises feeding portion and two radiation arms, described radiant body and two described main parasitic elements are located on described first surface, two described main parasitic elements are located at the top of two described radiation arms, and have gap between two described main parasitic elements; Two described radiation arms are symmetrical, are formed with the bottom-up gradual change gap increased gradually of width between two described radiation arms; Described microstrip feed line is L-shaped, described microstrip feed line is located on described second surface, and the center of the lateral part of described microstrip feed line is relative up and down with the center of two described radiation arms, is followed closely by short circuit between described microstrip feed line and two described radiation arms and be electrically connected; Described coaxial connector is installed in the bottom of described medium substrate, and the vertical part of the feeding portion of described radiant body, described microstrip feed line is electrically connected with described coaxial connector simultaneously.
As a further improvement on the present invention, the end of two described radiation arms is formed with at least one groove respectively.
As a further improvement on the present invention, described groove is U-shaped groove or v-depression or arc groove or irregularly shaped groove.
As a further improvement on the present invention, two described main parasitic elements are elongated, and the distance between the radiation arm that each main parasitic element is corresponding with it is 0.01 λ
0~ 0.025 λ
0, λ
0for the centre frequency of working band.
As a further improvement on the present invention, from up to down gradual change is little gradually in the impedance of described microstrip feed line.
As a further improvement on the present invention, described coaxial connector comprises inner wire and outer conductor, and described inner wire is electrically connected the vertical part of described microstrip feed line, and described outer conductor is electrically connected the feeding portion of described radiant body.
As a further improvement on the present invention, be provided with the secondary parasitic element of two bar shapeds, these two secondary parasitic elements are located at two described main parasitic element both sides dorsad, and the main parasitic element setpoint distance apart that each secondary parasitic element is corresponding with it.
As a further improvement on the present invention, be provided with the secondary parasitic element of two L shapes, these two secondary parasitic element intervals back to being arranged at above two described main parasitic elements, and are connected to two described main parasitic elements.
The invention has the beneficial effects as follows: the invention provides a kind of ultra-wideband antenna, by arranging two symmetrical radiation arms, and forming gradual change gap between two radiation arms, present invention improves the impedance operator of antenna, the broadening impedance bandwidth of antenna; By forming at least one groove at the end of two radiation arms, improve the standing-wave ratio characteristic of high frequency, and be convenient to the distribution of many group radiation arm circumferences.Ultra-wideband antenna of the present invention can realize broadband at 1.43GHz ~ 4.1774GHz, and standing-wave ratio is below 2, and impedance bandwidth, more than 96%, has good omni-directional.Therefore, ultra-wideband antenna of the present invention has wider impedance bandwidth, and structure is simple, is easy to manufacture, for the realization of horizontal polarization, perpendicular polarization and broadband beam antenna lays the foundation.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 one viewing angle constructions schematic diagram;
Fig. 2 is another viewing angle constructions schematic diagram of the embodiment of the present invention 1;
Fig. 3 is the embodiment of the present invention 2 one viewing angle constructions schematic diagram;
Fig. 4 is another viewing angle constructions schematic diagram of the embodiment of the present invention 2;
Fig. 5 is the embodiment of the present invention 3 one viewing angle constructions schematic diagram;
Fig. 6 is the embodiment of the present invention 4 one viewing angle constructions schematic diagram;
Fig. 7 is that the embodiment of the present invention 1 emulates standing-wave ratio figure;
The emulation directional diagram that Fig. 8 a is the embodiment of the present invention 1 frequency when being 1.7GHz;
The emulation directional diagram that Fig. 8 b is the embodiment of the present invention 1 frequency when being 2.2GHz;
The emulation directional diagram that Fig. 8 c is the embodiment of the present invention 1 frequency when being 2.7GHz.
By reference to the accompanying drawings, make the following instructions:
1-medium substrate, 2-radiant body, 201-feeding portion, 202-radiation arm, 2021-groove, 203-gradual change gap, the main parasitic element of 3-, 4-microstrip feed line, the lateral part of 401-microstrip feed line, the vertical part of 402-microstrip feed line, 5-coaxial connector, 501-inner wire, 502-outer conductor, 6-short circuit is followed closely, the secondary parasitic element of 7-.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples, its object is only better understand content of the present invention but not limit the scope of the invention.
Embodiment 1
As depicted in figs. 1 and 2, a kind of ultra-wideband antenna, comprise medium substrate 1, radiant body 2, two main parasitic elements 3, microstrip feed line 4 and coaxial connector 5, described medium substrate has first surface and second surface corresponding thereto, described radiant body comprises feeding portion 201 and two radiation arms 202, described radiant body 2 and two described main parasitic elements 3 are located on described first surface, microstrip feed line 4 is L-shaped to be located on described second surface, described coaxial connector 5 is installed in the bottom of described medium substrate 1, and the feeding portion 201 of described radiant body 2, the vertical part 402 of described microstrip feed line is electrically connected with described coaxial connector 5 simultaneously.
Two radiation arm 202 overall lengths are 0.4 λ
0~ 0.7 λ
0; Width is 0.15 λ
0~ 0.3 λ
0(λ
0centre frequency for working band); Two described radiation arms 202 are symmetrical, and be formed with the bottom-up gradual change gap 203 increased gradually of width between two described radiation arms 202, namely the width of upper end, gradual change gap 203 is greater than the width of its lower end; The length in gradual change gap 203 is 0.15 λ
0~ 0.3 λ
0, width is 0.005 λ
0~ 0.02 λ
0; Preferably, the end of two described radiation arms 202 is formed with a groove 2021 respectively, and groove 2021 can be U-shaped groove or v-depression or arc groove or irregularly shaped groove, and the present embodiment 1 is U-shaped groove.
Two described main parasitic elements 3 are located at the top of two described radiation arms 202, and have gap between two described main parasitic elements 3; Preferably, two described main parasitic elements are elongated, and the distance between the radiation arm 202 that each main parasitic element 3 is corresponding with it is 0.01 λ
0~ 0.025 λ
0, length is 0.15 λ
0~ 0.32 λ
0, width is 0.015 λ
0~ 0.03 λ
0.
The center of the lateral part 401 of described microstrip feed line is relative up and down with the center of two described radiation arms 202, follows closely 6 be electrically connected between described microstrip feed line 4 and two described radiation arms 202 by short circuit; Preferably, the impedance of the lateral part 401 of microstrip feed line is variable between 30 Ω ~ 67 Ω, and the impedance of the longitudinal component 402 of microstrip feed line is variable between 50 Ω ~ 67 Ω, and from up to down impedance diminishes gradually; Microstrip feed line 4 overall length is not less than 0.2 λ
0, the lower terminal impedance of microstrip feed line is 50 Ω.The lower terminal impedance of microstrip feed line is not limited to 50 Ω, converts other impedance to by modes such as impedance transformations.
Coaxial connector 5 comprises inner wire 501 and outer conductor 502, and described inner wire 501 is electrically connected the vertical part 402 of described microstrip feed line, and described outer conductor 502 is electrically connected the feeding portion 201 of described radiant body 2.
In said structure, under the acting in conjunction of two main parasitic elements 3 and two radiation arms 202, more CURRENT DISTRIBUTION can be made in main parasitic element 3 with on radiation arm 202, thus the radiation characteristic and bandwidth characteristic of improving antenna can be reached; By arranging two symmetrical radiation arms 202, and forming gradual change gap 203 between two radiation arms 202, the impedance operator of antenna can be improved, the impedance bandwidth of broadening antenna; By forming a groove 2021 at the end of two radiation arms 202, the standing-wave ratio characteristic of high frequency can be improved, and be convenient to the distribution of many group radiation arm circumferences.
See Fig. 7, the ultra-wideband antenna of the embodiment of the present invention 1 can realize broadband at 1.43GHz ~ 4.1774GHz, and standing-wave ratio is below 2, and impedance bandwidth is more than 96%.
See Fig. 8 a, 8b and 8c, the ultra-wideband antenna horizontal radiation pattern deviation in roundness of the embodiment of the present invention 1, in 3dB, has good omni-directional.
Embodiment 2
See Fig. 3 and Fig. 4, the present embodiment 2 comprises all technical characteristic of embodiment 1, and its difference is, the end of two described radiation arms 202 is formed with two U-shaped grooves 2021 respectively; And the top and bottom impedance of microstrip feed line 4 is identical.
Embodiment 3
See Fig. 5, the present embodiment 3 comprises all technical characteristic of embodiment 1, its difference is, also be provided with the secondary parasitic element 7 of two bar shapeds, these two secondary parasitic elements 7 are located at two described main parasitic element 3 both sides dorsad, and main parasitic element 3 setpoint distance apart that each secondary parasitic element 7 is corresponding with it.Namely with the addition of short secondary parasitic element 7 at main parasitic element 3 place.Secondary parasitic element 7 can produce multi-resonant frequency, thus the frequency bandwidth of broadening antenna.
Embodiment 4
See Fig. 6, the present embodiment 4 comprises all technical characteristic of embodiment 1, and its difference is, is provided with the secondary parasitic element 7 of two L shapes, these two secondary parasitic element 7 intervals back to being arranged at above two described main parasitic elements 3, and are connected to two described main parasitic elements 3.
Above embodiment is with reference to accompanying drawing, to a preferred embodiment of the present invention will be described in detail.Those skilled in the art, by carrying out amendment on various forms or change to above-described embodiment, when not deviating from essence of the present invention, drops within protection scope of the present invention.
Claims (8)
1. a ultra-wideband antenna, it is characterized in that: comprise medium substrate (1), radiant body (2), two main parasitic elements (3), microstrip feed line (4) and coaxial connector (5), described medium substrate has first surface and second surface corresponding thereto, described radiant body comprises feeding portion (201) and two radiation arms (202), described radiant body and two described main parasitic elements are located on described first surface, two described main parasitic elements are located at the top of two described radiation arms, and between two described main parasitic elements, there is gap, two described radiation arms are symmetrical, are formed with the bottom-up gradual change gap (203) increased gradually of width between two described radiation arms, described microstrip feed line is L-shaped, described microstrip feed line is located on described second surface, and the center of the lateral part of described microstrip feed line (401) is relative up and down with the center of two described radiation arms, follows closely (6) be electrically connected between described microstrip feed line and two described radiation arms by short circuit, described coaxial connector is installed in the bottom of described medium substrate, and the vertical part of the feeding portion of described radiant body, described microstrip feed line is electrically connected with described coaxial connector simultaneously.
2. ultra-wideband antenna according to claim 1, is characterized in that: the end of two described radiation arms is formed with at least one groove (2021) respectively.
3. ultra-wideband antenna according to claim 2, is characterized in that: described groove is U-shaped groove or v-depression or arc groove or irregularly shaped groove.
4. ultra-wideband antenna according to claim 1, is characterized in that: two described main parasitic elements are elongated, and the distance between the radiation arm that each main parasitic element is corresponding with it is 0.01 λ
0~ 0.025 λ
0, λ
0for the centre frequency of working band.
5. ultra-wideband antenna according to claim 1, is characterized in that: from up to down gradual change is little gradually in the impedance of described microstrip feed line.
6. ultra-wideband antenna according to claim 1, it is characterized in that: described coaxial connector comprises inner wire (501) and outer conductor (502), described inner wire is electrically connected the vertical part (402) of described microstrip feed line, and described outer conductor is electrically connected the feeding portion of described radiant body.
7. ultra-wideband antenna according to claim 1, it is characterized in that: the secondary parasitic element (7) being provided with two bar shapeds, these two secondary parasitic elements are located at two described main parasitic element both sides dorsad, and the main parasitic element setpoint distance apart that each secondary parasitic element is corresponding with it.
8. ultra-wideband antenna according to claim 1, it is characterized in that: the secondary parasitic element (7) being provided with two L shapes, these two secondary parasitic element intervals back to being arranged at above two described main parasitic elements, and are connected to two described main parasitic elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236119.3A CN104821435B (en) | 2015-05-11 | 2015-05-11 | Ultra-wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236119.3A CN104821435B (en) | 2015-05-11 | 2015-05-11 | Ultra-wideband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104821435A true CN104821435A (en) | 2015-08-05 |
| CN104821435B CN104821435B (en) | 2018-02-06 |
Family
ID=53731660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510236119.3A Active CN104821435B (en) | 2015-05-11 | 2015-05-11 | Ultra-wideband antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104821435B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112164872A (en) * | 2020-08-31 | 2021-01-01 | 西安朗普达通信科技有限公司 | 5G multifrequency antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595705A (en) * | 1982-07-01 | 1984-01-12 | Fujitsu Ltd | Microwave antenna circuit |
| CN101217216A (en) * | 2008-01-08 | 2008-07-09 | 东南大学 | An ultra-wideband shaped aerial based on manual electromagnetic structure |
| CN201345417Y (en) * | 2009-01-08 | 2009-11-11 | 中国人民解放军空军工程大学导弹学院 | Small-sized ultra wide band plane antenna |
| CN101777691A (en) * | 2010-02-23 | 2010-07-14 | 厦门大学 | Slot printing monopole ultra-wideband antenna |
| CN102916246A (en) * | 2012-10-09 | 2013-02-06 | 西南交通大学 | Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system |
| CN204706645U (en) * | 2015-05-11 | 2015-10-14 | 昆山恩电开通信设备有限公司 | Ultra-wideband antenna |
-
2015
- 2015-05-11 CN CN201510236119.3A patent/CN104821435B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595705A (en) * | 1982-07-01 | 1984-01-12 | Fujitsu Ltd | Microwave antenna circuit |
| CN101217216A (en) * | 2008-01-08 | 2008-07-09 | 东南大学 | An ultra-wideband shaped aerial based on manual electromagnetic structure |
| CN201345417Y (en) * | 2009-01-08 | 2009-11-11 | 中国人民解放军空军工程大学导弹学院 | Small-sized ultra wide band plane antenna |
| CN101777691A (en) * | 2010-02-23 | 2010-07-14 | 厦门大学 | Slot printing monopole ultra-wideband antenna |
| CN102916246A (en) * | 2012-10-09 | 2013-02-06 | 西南交通大学 | Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system |
| CN204706645U (en) * | 2015-05-11 | 2015-10-14 | 昆山恩电开通信设备有限公司 | Ultra-wideband antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112164872A (en) * | 2020-08-31 | 2021-01-01 | 西安朗普达通信科技有限公司 | 5G multifrequency antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104821435B (en) | 2018-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101711150B1 (en) | Dual-polarized antenna for mobile communication base station and multi-band antenna system | |
| CN103066376B (en) | A kind of broadband high-isolation dual polarization antenna and radiating element thereof | |
| CN204706645U (en) | Ultra-wideband antenna | |
| CN102468531B (en) | Multi-frequency antenna | |
| EP3201986B1 (en) | Antenna device for a base station antenna system | |
| CN204497377U (en) | A kind of GSM/LTE dual-band antenna radiating element and antenna | |
| CN104733861A (en) | Antenna structure and wireless communication device with same | |
| KR20150089509A (en) | Dual-polarized dipole antenna | |
| CN103956564A (en) | Bandwidth dual-polarization radiating element and antenna | |
| CN203826542U (en) | Broadband dual polarization radiation unit and antenna | |
| CN107634322A (en) | Double frequency high-gain omni-directional antenna | |
| CN106450706A (en) | Broadband dual-polarized magnetoelectric dipole base station antenna | |
| CN112467364B (en) | Dual-frequency fusion antenna array, common mode rejection method and communication equipment | |
| CN207116688U (en) | Double frequency high-gain omni-directional antenna | |
| KR101630674B1 (en) | Double dipole quasi-yagi antenna using stepped slotline structure | |
| KR20120068273A (en) | Wideband single resonance antenna | |
| CN203039094U (en) | Broad band and high isolation dual-polarized antenna and radiation unit thereof | |
| CN104993245A (en) | S-waveband communication-in-motion double-frequency circularly polarized micro-strip antenna and array thereof | |
| CN210111029U (en) | Dual-band antenna and aircraft | |
| CN102280702A (en) | Very broadband multiterminal feed printing one pole antenna | |
| CN105161831B (en) | A kind of double five frequency-band antennas of inverted L-shaped slot in defect ground | |
| US8077097B2 (en) | Dual-band antenna and electronic device employing the same | |
| CN107591614B (en) | High-gain omnidirectional array antenna | |
| CN203826548U (en) | Multi-frequency plate-shaped WLAN antenna with metal wire and plastic part | |
| CN104821435A (en) | Ultra-wideband antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |