CN103545602A - Ku-band circularly polarized dielectric resonator antenna - Google Patents
Ku-band circularly polarized dielectric resonator antenna Download PDFInfo
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- CN103545602A CN103545602A CN201310476314.4A CN201310476314A CN103545602A CN 103545602 A CN103545602 A CN 103545602A CN 201310476314 A CN201310476314 A CN 201310476314A CN 103545602 A CN103545602 A CN 103545602A
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Abstract
The invention relates to a Ku-band circularly polarized dielectric resonator antenna which comprises a metal grounding plate and a micro-strip feeder line. The metal grounding plate is arranged on the upper surface of a dielectric substrate, and the feeder line is arranged on the lower surface of the dielectric substrate. A three-tier dielectric resonator is arranged at the center of the upper surface of the metal grounding plate; a crisscrossed gap is formed in the center of the metal grounding plate; the inner end of the micro-strip feeder line is arranged right below the crisscrossed gap and forms a 45-degree angle with the same; two cascade-connection dumbbell-shaped groove gaps are formed in the grounding plate. Impedance bandwidth of the antenna is 27.67%, circularly polarized axial ratio bandwidth 6.56%. within working frequency, the maximum gain of the antenna is 8.2dB, the minimum gain is 6.0dB, and the antenna has wider coverage range. Axial ratio of the 12.2GHz position is approximately 0.09dB, and the antenna has good circularly polarized characteristics. The antenna covers commonly used working frequency bands of satellite television broadcasting in IT3, and is applicable to a satellite television broadcasting system within 11-14.5GHz frequency bands.
Description
Technical field
The present invention relates to a kind of Ku wave band circularly polarized dielectric resonator antenna.This antenna works in Ku wave band, and impedance bandwidth is 27.67%, and Circular polarization ratio bandwidth is 6.56%, gains as 6.0dB-8.2 dB, and front-to-back ratio is better.Therefore the conventional working frequency range of this antenna cover IT3 district's satellite television broadcasting, can be applicable to the satellite TV broadcast system of 11GHz-14.5GHz frequency range.
Background technology
Along with the development of Modern wireless communication technology and popularizing of wireless application product, people have higher requirement to the indispensable antenna of wireless communication system, such as circular polarization characteristics is good, it is high to gain, volume is little and quality is light, also to there is very high transmission rate, suppress misty rain interference and anti-multipath reflection etc.Particularly in satellite communication system, just higher to the requirement of antenna performance.What generally, satellite communication system was used is the higher reflector antenna that gains.This antenna has very high using value, but this antenna cost is higher, and volume is large, particularly, in mobile communication, uses very inconvenient.And medium resonator antenna is little because have dielectric loss, antenna size is little, surface wave loss does not exist and can be designed to various 3 dimensional coil geometries and feeding classification is easy and the outstanding advantages such as diversity, has caused people's common concern, is an international study hotspot at present.
According to the regulation of International Telecommunication Association, the whole world is divided into three regions, and China belongs to IT3 district, is positioned at Asia other countries and the South Pacific region in addition in this region.The conventional working band of this district's satellite broadcasting is Ku wave band (10GHz-18GHz), this is that frequency is high, wide frequency range because Ku wave band has, the features such as signal volume is large, but the phenomenon that Ku wave band exists rain to decline, be easily subject to the interference of sleety weather, therefore can use circularly polarized dielectric resonator antenna to reach at Ku wave band and suppress misty rain interference, improve the object of systematic function.
Summary of the invention
The object of the invention is to the defect existing for prior art, a kind of Ku wave band circularly polarized dielectric resonator antenna is provided, this operating frequency of antenna is 11GHz-14.5GHz, covers the conventional working frequency range of IT3 district satellite broadcasting, can be used for satellite TV broadcast system.
The technical solution used in the present invention is as follows:
A kind of Ku wave band circularly polarized dielectric resonator antenna, comprise that medium substrate upper surface has layer of metal ground plate and a microstrip feed line that is in medium substrate lower surface, is characterized in that: there is the dielectric resonator of a three level stack center on metal ground plate; In metal ground plate center, there is cross gap; The inner of described microstrip feed line be in described cross gap under, microstrip feed line and cross gap are 45 °; The dumbbell shape line of rabbet joint that has two cascades on metal ground plate, with broadening antenna impedance bandwidth.The dielectric resonator of described three level stack is layer dielectric cylinder, middle level dielectric cylinder, top dielectric cylinder is stacking forms, the radius of three layers of dielectric cylinder is identical, material and highly different, the dielectric constant of their height and material is the resonance frequency of antenna to the major effect of antenna, and its size is larger on the axial ratio bandwidth impact of antenna.The circularly polarized dielectric resonator of three level stack by microstrip feed line the cross gap by metal ground plate center to its feed that is coupled; Two arm lengths of cross gap are unequal, and width equates.By controlling the length in two gaps, realize left-handed or right-handed circular polarization.The dumbbell lever width of the described dumbbell shape line of rabbet joint is less, and the cut-off frequency of antenna is higher; Two dumbbell shape line of rabbet joint spacing are larger, and the gated nature of filter is stronger.
The present invention compared with prior art, has following apparent outstanding substantive distinguishing features and remarkable advantage:
1. this design has adopted the dielectric resonator structure of three level stack.Compare with traditional sucrose resonator, effectively improved the gain of medium resonator antenna, be up to 8.2dB.
2. on ground plate, the dielectric resonator of stacked structure has been realized less antenna size.
3. coordinating of microstrip feed line and cross gap on ground plate, microstrip feed line and cross gap are 45 °.The width of the length of microstrip feed line and width and cross gap has been realized the matched well of antenna.
4. on ground plate, increase by two cascades slot structure broadening antenna impedance bandwidth.
5. adopt the mode of cross gap coupling feed to realize circular polarization.Axial ratio at 12.2GHz place antenna is about 0.09dB, obtains very good circular polarization characteristics.
6. by controlling the length in two gaps, can realize easily left-handed or right-handed circular polarization ripple.Structure shown in Fig. 1 is left-hand circular polarization antenna.
Accompanying drawing explanation
Fig. 1 circularly polarized dielectric resonator antenna vertical view.
Fig. 2 circularly polarized dielectric resonator antenna side view.
Slot structure figure on Fig. 3 ground plate.
Fig. 4 antenna emulation S parameter.
Fig. 5 antenna axial ratio curve chart.
Fig. 6 antenna gain pattern.
Fig. 7 radiation pattern (12.2GHz).
Embodiment
Details are as follows by reference to the accompanying drawings for the preferred embodiments of the present invention:
Embodiment mono-:
Referring to Fig. 1 ~ Fig. 3, this Ku wave band circularly polarized dielectric resonator antenna, comprises that medium substrate (1) upper surface has layer of gold
Belong to ground plate (6) and a microstrip feed line (5) that is in medium substrate (1) lower surface, it is characterized in that:
1) on metal ground plate (6), there is the dielectric resonator (2) of a three level stack center;
2) in metal ground plate (6) center, there is cross gap (3);
3) the inner of described microstrip feed line (5) be in described cross gap (3) under, microstrip feed line and cross gap (3) are 45 °;
4) on metal ground plate (6), there is the dumbbell shape line of rabbet joint (4) of two cascades, with broadening antenna impedance bandwidth.
Embodiment bis-:
The present embodiment and embodiment mono-are basic identical, special feature is: the dielectric resonator of described three level stack (2) is layer dielectric cylinder (2-1), middle level dielectric cylinder (2-2) and stacking the forming of top dielectric cylinder (2-3), the radius of three layers of dielectric cylinder is identical, material and highly different, the dielectric constant of their height and material is the resonance frequency of antenna to the major effect of antenna, and its size is larger on the axial ratio bandwidth impact of antenna.The circularly polarized dielectric resonator of three level stack (2) by microstrip feed line (5) cross gap (3) by metal ground plate (6) center to its feed that is coupled; Two arm lengths of cross gap (3) are unequal, and width equates.By controlling the length in two gaps, realize left-handed or right-handed circular polarization.The dumbbell lever width of the described dumbbell shape line of rabbet joint (4) is less, and the cut-off frequency of antenna is higher; Two dumbbell shape lines of rabbet joint (4) spacing is larger, and the gated nature of filter is stronger.
Embodiment tri-:
The present embodiment and embodiment mono-are basic identical, and special feature is as follows:
1. as shown in Figure 1-2, lower floor is microstrip feed line (5) to the structure of antenna, and middle level is medium substrate (1), and characteristic impedance is that the microstrip feed line of 50 ohm is etched in this medium substrate layer; Upper strata is ground plate (6), and cross gap (3) and dumbbell shape short slot seam (4) are all slotted on this ground plate (6); Layer dielectric cylinder (2-1); Middle level dielectric cylinder (2-2); Top dielectric cylinder (2-3).
2. the dielectric resonator of three level stack (3) medium radius is identical, and material and highly different.Their height and the dielectric constant resonance frequency to antenna major effect antenna, its size is larger on the axial ratio bandwidth impact of antenna.
3. ground plate (6) and microstrip feed line (5) lay respectively at the upper and lower surface of medium substrate (1), cylindrical dielectric resonator (2) by microstrip line (5) cross gap (3) by center, floor (6) to its feed that is coupled.As shown in Figure 3, two arm lengths of cross gap (3) are unequal, and width is equal, and two arms of cross coupling slot and microstrip feed line (5) biasing miter angle, to form circular polarization, realize left-handed or right-handed circular polarization by controlling the length in two gaps.Regulate the length of gap width and microstrip feed line (5) can make microstrip antenna obtain good coupling.
4. as shown in Figure 3, it is upper that it is positioned at ground plate (6) to the dumbbell shape line of rabbet joint (4) structure of upper two cascades of ground plate (6), i.e. the opposite side of 50 Europe microstrip lines.The structure of multiple-grooved seam cascade has obvious effect to the impedance bandwidth of broadening antenna, can improve well the performance of antenna.The width of dumbbell lever and dumbbell radius change and have maximum effect the cut-off frequency of defect ground structure: lever width is less, and the cut-off frequency of antenna is just higher; When cut-off frequency uprises, the area of dumbbell is also just less.The change of cut-off frequency also can cause by the spacing on two defects ground and the change of lever length, and lever length is larger, and cut-off frequency is less; The spacing on two defect ground is larger, and the gated nature of filter is just stronger.
5. Fig. 4 is antenna emulation S parameter, as can be seen from Figure S
11it is antenna axial ratio curve chart that≤-10dB impedance bandwidth reaches 27.67%, Fig. 5, and the axial ratio bandwidth of AR≤3dB is 6.56% as can be seen from Figure, and is approximately 0.09dB in the axial ratio of 12.2GHz place antenna.
6. Fig. 6 is antenna gain pattern, and within the scope of operating frequency 11GHz-14.5GHz, the maximum gain of antenna is 8.2dB, and least gain is 6.0dB.
7. Fig. 7 is that antenna is at the directional diagram at 12.2GHz place.As can be seen from Figure, antenna sidelobe is lower, has good radiation characteristic.
Claims (4)
1. a Ku wave band circularly polarized dielectric resonator antenna, comprises that medium substrate (1) upper surface has layer of metal ground plate (6) and a microstrip feed line (5) that is in medium substrate (1) lower surface, is characterized in that:
1) on metal ground plate (6), there is the dielectric resonator (2) of a three level stack center;
2) in metal ground plate (6) center, there is cross gap (3);
3) the inner of described microstrip feed line (5) be in described cross gap (3) under, microstrip feed line and cross gap (3) are 45 °;
4) on metal ground plate (6), there is the dumbbell shape line of rabbet joint (4) of two cascades, with broadening antenna impedance bandwidth.
2. Ku wave band circularly polarized dielectric resonator antenna according to claim 1, it is characterized in that: the dielectric resonator of described three level stack (2) is layer dielectric cylinder (2-1), middle level dielectric cylinder (2-2) and stacking the forming of top dielectric cylinder (2-3), the radius of three layers of dielectric cylinder is identical, material and highly different, the dielectric constant of their height and material is the resonance frequency of antenna to the major effect of antenna, and its size is larger on the axial ratio bandwidth impact of antenna.
3. Ku wave band circularly polarized dielectric resonator antenna according to claim 1, is characterized in that: the circularly polarized dielectric resonator of three level stack (2) by microstrip feed line (5) cross gap (3) by metal ground plate (6) center to its feed that is coupled; Two arm lengths of cross gap (3) are unequal, and width equates.By controlling the length in two gaps, realize left-handed or right-handed circular polarization.
4. Ku wave band circularly polarized dielectric resonator antenna according to claim 1, is characterized in that: the dumbbell lever width of the described dumbbell shape line of rabbet joint (4) is less, and the cut-off frequency of antenna is higher; Two dumbbell shape lines of rabbet joint (4) spacing is larger, and the gated nature of filter is stronger.
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| CN104269608A (en) * | 2014-09-17 | 2015-01-07 | 电子科技大学 | Double-frequency circular polarization rectangular dielectric resonator antenna |
| CN106099360A (en) * | 2016-05-20 | 2016-11-09 | 华南理工大学 | Dielectric resonator filter antenna |
| CN106252879A (en) * | 2016-08-31 | 2016-12-21 | 安徽四创电子股份有限公司 | A kind of band wire feed cross seam double-circle polarization linear array |
| CN106876965A (en) * | 2016-12-30 | 2017-06-20 | 广东精点数据科技股份有限公司 | The feed method of circular polarisation spiral lamination microstrip antenna |
| CN106876964A (en) * | 2016-12-30 | 2017-06-20 | 广东精点数据科技股份有限公司 | A kind of circular polarisation spiral lamination microstrip antenna |
| WO2017107137A1 (en) * | 2015-12-24 | 2017-06-29 | 华为技术有限公司 | Slot antenna and terminal |
| CN107768825A (en) * | 2017-10-24 | 2018-03-06 | 华南理工大学 | A kind of cross circular polarisation slot antenna |
| CN107834186A (en) * | 2017-11-08 | 2018-03-23 | 中山大学 | A kind of broadband and wide wave beam circularly polarized dielectric resonator antenna and its design method |
| CN107871927A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of small-sized medium resonator antenna of circular polarisation |
| CN107871933A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of medium resonator antenna |
| CN107871926A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of cutler feed medium resonator antenna |
| CN108598696A (en) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | A kind of high-gain millimeter wave circular polarization medium resonator array antenna |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN111541025A (en) * | 2020-04-10 | 2020-08-14 | 华南理工大学 | Circularly polarized multi-input multi-output dielectric resonator antenna |
| CN111900542A (en) * | 2020-08-21 | 2020-11-06 | 南京信息工程大学 | High-frequency high-gain broadband dielectric resonator antenna |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN112054301A (en) * | 2020-09-16 | 2020-12-08 | 南京尤圣美电子科技有限公司 | Miniaturized linear polarization, dual polarization, circular polarization and triple polarization 5G antenna |
| CN112259958A (en) * | 2020-10-14 | 2021-01-22 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
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| CN104269608A (en) * | 2014-09-17 | 2015-01-07 | 电子科技大学 | Double-frequency circular polarization rectangular dielectric resonator antenna |
| CN104269608B (en) * | 2014-09-17 | 2017-10-17 | 电子科技大学 | A kind of double frequency round polarized Rectangular Enclosure with Participating Media resonant aerial |
| US10910726B2 (en) | 2015-12-24 | 2021-02-02 | Huawei Technologies Co., Ltd. | Slot antenna and terminal |
| WO2017107137A1 (en) * | 2015-12-24 | 2017-06-29 | 华为技术有限公司 | Slot antenna and terminal |
| CN106099360A (en) * | 2016-05-20 | 2016-11-09 | 华南理工大学 | Dielectric resonator filter antenna |
| CN106252879A (en) * | 2016-08-31 | 2016-12-21 | 安徽四创电子股份有限公司 | A kind of band wire feed cross seam double-circle polarization linear array |
| CN106252879B (en) * | 2016-08-31 | 2021-07-20 | 安徽四创电子股份有限公司 | Double-circular-polarization linear array with line-fed cross-shaped seam |
| CN107871927A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of small-sized medium resonator antenna of circular polarisation |
| CN107871933A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of medium resonator antenna |
| CN107871926A (en) * | 2016-09-23 | 2018-04-03 | 徐平芳 | A kind of cutler feed medium resonator antenna |
| CN106876964A (en) * | 2016-12-30 | 2017-06-20 | 广东精点数据科技股份有限公司 | A kind of circular polarisation spiral lamination microstrip antenna |
| CN106876965A (en) * | 2016-12-30 | 2017-06-20 | 广东精点数据科技股份有限公司 | The feed method of circular polarisation spiral lamination microstrip antenna |
| CN107768825A (en) * | 2017-10-24 | 2018-03-06 | 华南理工大学 | A kind of cross circular polarisation slot antenna |
| CN107768825B (en) * | 2017-10-24 | 2024-05-07 | 华南理工大学 | Cross circular polarization groove antenna |
| CN107834186A (en) * | 2017-11-08 | 2018-03-23 | 中山大学 | A kind of broadband and wide wave beam circularly polarized dielectric resonator antenna and its design method |
| CN108598696A (en) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | A kind of high-gain millimeter wave circular polarization medium resonator array antenna |
| CN110718770A (en) * | 2019-09-29 | 2020-01-21 | 山西大学 | Full-polarization reconfigurable MIMO antenna |
| CN111541025A (en) * | 2020-04-10 | 2020-08-14 | 华南理工大学 | Circularly polarized multi-input multi-output dielectric resonator antenna |
| CN111916899A (en) * | 2020-08-21 | 2020-11-10 | 南京信息工程大学 | Stacked high-gain round-table dielectric resonator antenna |
| CN111900542A (en) * | 2020-08-21 | 2020-11-06 | 南京信息工程大学 | High-frequency high-gain broadband dielectric resonator antenna |
| CN112054301A (en) * | 2020-09-16 | 2020-12-08 | 南京尤圣美电子科技有限公司 | Miniaturized linear polarization, dual polarization, circular polarization and triple polarization 5G antenna |
| CN112054301B (en) * | 2020-09-16 | 2024-01-30 | 南京尤圣美电子科技有限公司 | Miniaturized linear polarization, dual polarization, circular polarization and three-polarization 5G antenna |
| CN112259958A (en) * | 2020-10-14 | 2021-01-22 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
| CN112259958B (en) * | 2020-10-14 | 2022-03-08 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
| CN112271438A (en) * | 2020-10-23 | 2021-01-26 | 汕头大学 | Slot-fed circularly polarized omnidirectional dielectric resonator antenna |
| CN112271438B (en) * | 2020-10-23 | 2022-12-06 | 汕头大学 | Slot-fed circularly polarized omnidirectional dielectric resonator antenna |
| CN112835130A (en) * | 2020-12-29 | 2021-05-25 | 北京邮电大学 | Weather state detection method and device and electronic equipment |
| CN112928448A (en) * | 2021-01-20 | 2021-06-08 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
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Application publication date: 20140129 |