CN105742823A - Capacitance-loaded triple-polarized slot antenna - Google Patents
Capacitance-loaded triple-polarized slot antenna Download PDFInfo
- Publication number
- CN105742823A CN105742823A CN201610218710.0A CN201610218710A CN105742823A CN 105742823 A CN105742823 A CN 105742823A CN 201610218710 A CN201610218710 A CN 201610218710A CN 105742823 A CN105742823 A CN 105742823A
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- CN
- China
- Prior art keywords
- line
- rabbet joint
- antenna
- radiation
- microstrip feed
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- Waveguide Aerials (AREA)
Abstract
The invention provides a capacitance-loaded triple-polarized slot antenna, and relates to a slot antenna. The antenna comprises three single-polarized antennas (11), which are perpendicular to one another, wherein each antenna (11) comprises a dielectric substrate (1), a metal ground plane (2), a radiation slot (3) and a microstrip feeder line (4); each metal ground plane (2) and each radiation slot (3) are arranged on the corresponding dielectric substrate (1); each radiation slot (3) is formed in the corresponding metal ground plane (2); two ends of each radiation slot (3) are short-circuited; a plurality of capacitors (7) are arranged at the other part (9), except for the part (8) which intersects with the corresponding microstrip feeder line (4), of each radiation slot (3) and are bridged to the edge of the radiation slot (3) in parallel; an antenna port (10) is arranged at one end of each microstrip feeder line (4); and the other end of each microstrip feeder line (4) is open, strides across the corresponding radiation slot (3) and extends a period of length. According to the antenna, the antenna dimension, cross polarization and shielding can be reduced, and isolation can be improved.
Description
Technical field
The present invention relates to a kind of slot antenna, three polarization slot antennas of especially a kind of capacitive load.
Background technology
Slot antenna is the antithesis antenna of element antenna, has a wide range of applications.But, common slot antenna not only radiates the length of the line of rabbet joint itself 1/2nd wavelength, and radiate and also need to bigger Metal ground around the line of rabbet joint and amass, big 1/2nd wavelength of length of the length ratio line of rabbet joint on usual metal ground, big 1/2nd wavelength of width of the width ratio line of rabbet joint on metal ground.Multipolarization MIMO can effectively improve spectrum efficiency and channel capacity, in order to MIMO technology may apply to the terminal that volume is little, it is necessary to the not like-polarized co-located placement of antenna.The radiation of antenna can be produced occlusion effect by bigger metal ground, slot antenna is made to be not suitable for co-located multiple-input and multiple-output (MIMO) application, when using in particular as multi-polarization antenna, the isolation caused between the cross polarization variation of antenna, antenna port is deteriorated by big metal ground, and these all will cause the decline of spectrum efficiency and channel capacity.The impedance of the line of rabbet joint is very big simultaneously, and the impedance matching also making slot antenna feeding transmission line is relatively difficult.
Summary of the invention
Technical problem: the purpose of the present invention is to propose to the three of a kind of capacitive load polarization slot antenna, this antenna can reduce the length of the radiation line of rabbet joint and the area on metal ground, and have and suppress cross polarization, improvement to isolate, reduce the effect blocked.
Technical scheme: three polarization slot antennas of the capacitive load of the present invention include the capacitive load antenna of three single polarizations being mutually perpendicular to placement；The metal that the capacitive load antenna of each single polarization includes medium substrate, be arranged on medium substrate and the radiation line of rabbet joint, microstrip feed line；The one side of medium substrate is metal ground, and the another side of medium substrate is the conduction band of microstrip feed line；Metal has the radiation line of rabbet joint on the ground, and the shape of the radiation line of rabbet joint is rectangle, and the radiation line of rabbet joint is positioned at the center on metal ground；Two terminal shortcircuits of the radiation line of rabbet joint；Remove, at the radiation line of rabbet joint, the part intersected with microstrip feed line, have several Capacitance parallel connection to be connected across two edges of the radiation line of rabbet joint so that the characteristic impedance step-down of the radiation line of rabbet joint；Also being the ground plane of described microstrip feed line, one end of microstrip feed line is the port of antenna metal, and the other end of the conduction band of microstrip feed line strides across the radiation line of rabbet joint and stretches a segment length to terminal, the open-end of microstrip feed line；The conduction band of microstrip feed line has two parts to constitute, and Part I conduction band is the position just having crossed over the radiation line of rabbet joint from the port of antenna to it, and the remainder of the conduction band of microstrip feed line is Part II conduction band.
Change Part II conduction band length and width, thus it is possible to vary the operating frequency of antenna, working band width and radiation the line of rabbet joint electrical length.
Change the quantity of loading capacitance, capacitance and spacing, change the spacing of adjacent metal via, it is possible to regulate the characteristic impedance of the radiation line of rabbet joint, thus it is possible to vary the electrical length of the operating frequency of antenna, the width of working band and the radiation line of rabbet joint.
Capacitance parallel connection is loaded into two edges of the radiation line of rabbet joint, the characteristic impedance not only making line of rabbet joint transmission line is reduced to and is prone to and feeding transmission lines matching volume, but also reducing the phase velocity of line of rabbet joint transmission line so that the length of the half-wavelength radiation line of rabbet joint reduces, it is achieved the miniaturization of the radiation line of rabbet joint and then antenna.The operating frequency of three polarization slot antennas of capacitive load is mainly determined by the resonant frequency of the radiation line of rabbet joint, but the operating frequency of antenna and matching degree can also be adjusted by the length and width that the size on metal ground, microstrip feed line conduction band are in the radiation position of the line of rabbet joint, Part II conduction band.
Beneficial effect: three polarization slot antennas of the capacitive load of the present invention provide the benefit that, this antenna can reduce the electric size of whole antenna, realize miniaturization, also there is the cross polarization of suppression antenna simultaneously, improve and isolate between port, and reduce the effect blocked on metal ground.
Accompanying drawing explanation
Fig. 1 is three polarization slot antenna overall structure schematic diagrams of capacitive load.
Fig. 2 be capacitive load three polarization slot antennas in the structural representation of capacitive load antenna of single polarization.
Figure has: the capacitive load antenna 13 of medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, microstrip feed line 4, conduction band 5, two ends 6, electric capacity 7, the part 8 intersected, other parts 9, port 10, Part I conduction band 11, Part II conduction band 12 and single polarization.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment of the present invention is: three polarization slot antennas of capacitive load include the capacitive load antenna 13 of three single polarizations being mutually perpendicular to placement；The capacitive load antenna 13 of each single polarization includes medium substrate 1, be arranged on medium substrate 1 metal ground 2 and the radiation line of rabbet joint 3, microstrip feed line 4；The one side of medium substrate 1 is metal ground 2, and the another side of medium substrate 1 is the conduction band 5 of microstrip feed line 4；Having the radiation line of rabbet joint 3 on metal ground 2, the shape of the radiation line of rabbet joint 3 is rectangle, and the radiation line of rabbet joint 3 is positioned at the center on metal ground 2；Two ends 6 short circuit of the radiation line of rabbet joint 3；Remove, at the radiation line of rabbet joint 3, the part 8 intersected with microstrip feed line 4, have several electric capacity 7 to be connected in parallel across two edges of the radiation line of rabbet joint 3 so that the characteristic impedance step-down of the radiation line of rabbet joint 3；Metal ground 2 is also the ground plane of described microstrip feed line 4, and one end of microstrip feed line 4 is the port 10 of antenna, and the other end of the conduction band 5 of microstrip feed line 4 strides across the radiation line of rabbet joint 3 and stretches a segment length to terminal, the open-end of microstrip feed line 4；The conduction band 5 of microstrip feed line has two parts to constitute, and Part I conduction band 11 is the position just having crossed over the radiation line of rabbet joint 3 from the port 10 of antenna to it, and the remainder of the conduction band of microstrip feed line is Part II conduction band 12.
Change Part II conduction band 12 length and width, thus it is possible to vary the operating frequency of antenna, working band width and radiation the line of rabbet joint 3 electrical length.
Change the quantity of loading capacitance 7, capacitance and spacing, it is possible to regulate the characteristic impedance of the radiation line of rabbet joint 3, thus it is possible to vary the electrical length of the operating frequency of antenna, the width of working band and the radiation line of rabbet joint 3.
The operating frequency of three polarization slot antennas of capacitive load is mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but the operating frequency of antenna and matching degree can also be adjusted by the metal ground size of 2, the conduction band 5 of microstrip feed line 4 length and width in the radiation position of the line of rabbet joint 3, Part II conduction band 12.
In technique, three polarization slot antennas of capacitive load both can adopt common printed circuit board (PCB) (PCB) technique, it would however also be possible to employ the integrated circuit technologies such as LTCC (LTCC) technique or CMOS, Si substrate realize.Electric capacity 7 can select the patch capacitor 7 of corresponding encapsulation the distance according to electric capacity 7 two pins electrode, the width of the selective radiation line of rabbet joint 3 according to operating frequency.On manufacturing, the capacitive load antenna 13 of three single polarizations can be mutually perpendicular to by draw-in groove and be installed together, or is mutually perpendicular to by binding agent and is bonded together, or two kinds of methods use together.
In accordance with the above, the present invention can just be realized.
Claims (3)
1. three polarization slot antennas of a capacitive load, it is characterised in that this antenna includes the capacitive load antenna (13) of three single polarizations being mutually perpendicular to placement；The capacitive load antenna (13) of each single polarization includes medium substrate (1), be arranged on medium substrate (1) metal ground (2) and radiate the line of rabbet joint (3), microstrip feed line (4)；The one side of medium substrate (1) is metal ground (2), and the another side of medium substrate (1) is the conduction band (5) of microstrip feed line (4)；Having the radiation line of rabbet joint (3) on metal ground (2), the shape of the radiation line of rabbet joint (3) is rectangle, the center of the radiation line of rabbet joint (3) with being positioned at metal (2)；Two ends (6) short circuit of the radiation line of rabbet joint (3)；The part (8) intersected with microstrip feed line (4) is removed in the radiation line of rabbet joint (3), several electric capacity (7) is had to be connected in parallel across two edges of the radiation line of rabbet joint (3) so that the characteristic impedance step-down of the radiation line of rabbet joint (3)；Metal ground (2) is also the ground plane of described microstrip feed line (4), one end of microstrip feed line (4) is the port (10) of antenna, the other end of the conduction band (5) of microstrip feed line (4) strides across the radiation line of rabbet joint (3) and stretches a segment length to terminal, the open-end of microstrip feed line (4)；The conduction band (5) of microstrip feed line has two parts to constitute, Part I conduction band (11) is the position that the port (10) from antenna has just crossed over the radiation line of rabbet joint (3) to it, and the remainder of the conduction band of microstrip feed line is Part II conduction band (12).
2. three polarization slot antennas of a kind of capacitive load according to claim 1, it is characterized in that described Part II conduction band (12), change its length and width, can change the operating frequency of antenna, working band width and radiation the line of rabbet joint (3) electrical length.
3. three polarization slot antennas of a kind of capacitive load according to claim 1, it is characterized in that described loading capacitance (7), change its quantity, capacitance or spacing, can regulate radiation the line of rabbet joint (3) characteristic impedance, change the operating frequency of antenna, working band width and radiation the line of rabbet joint (3) electrical length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218710.0A CN105742823A (en) | 2016-04-08 | 2016-04-08 | Capacitance-loaded triple-polarized slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218710.0A CN105742823A (en) | 2016-04-08 | 2016-04-08 | Capacitance-loaded triple-polarized slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105742823A true CN105742823A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218710.0A Pending CN105742823A (en) | 2016-04-08 | 2016-04-08 | Capacitance-loaded triple-polarized slot antenna |
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| CN (1) | CN105742823A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10629990B2 (en) | 2016-09-29 | 2020-04-21 | Compal Electronics, Inc. | Antenna structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| CN101714698A (en) * | 2008-09-05 | 2010-05-26 | 索尼爱立信移动通信股份公司 | Notch antenna and wireless device |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
-
2016
- 2016-04-08 CN CN201610218710.0A patent/CN105742823A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| CN101714698A (en) * | 2008-09-05 | 2010-05-26 | 索尼爱立信移动通信股份公司 | Notch antenna and wireless device |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10629990B2 (en) | 2016-09-29 | 2020-04-21 | Compal Electronics, Inc. | Antenna structure |
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Application publication date: 20160706 |
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