CN105811114A - Capacitor loaded semi-groove antenna - Google Patents
Capacitor loaded semi-groove antenna Download PDFInfo
- Publication number
- CN105811114A CN105811114A CN201610216977.6A CN201610216977A CN105811114A CN 105811114 A CN105811114 A CN 105811114A CN 201610216977 A CN201610216977 A CN 201610216977A CN 105811114 A CN105811114 A CN 105811114A
- Authority
- CN
- China
- Prior art keywords
- line
- rabbet joint
- radiation
- antenna
- 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.)
- Pending
Links
Classifications
-
- 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
- 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
-
- 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
- H01Q5/321—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 within a radiating element or between connected radiating elements
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention discloses a capacitor loaded semi-groove antenna, and relates to a slot antenna. The antenna comprises a dielectric substrate (1), metal ground (2), a radiation slot (3) and a microstrip feed line (4), wherein the metal ground (2) and the radiation slot (3) are arranged on the dielectric substrate (1), the radiation slot (3) is formed in the metal ground (2), one end of the radiation slot (3) is shorted-circuit, the other end (6) of the radiation slot (3) is opened-circuit, a plurality of capacitors (7) are bridged in parallel at the edge of the other part expect a part where the radiation slot (3) and the microstrip feed line (4) are crossed, an antenna port (10) is arranged at one end of the microstrip feed line (4), the other end of the microstrip feed line (4) is opened-circuit, crosses the radiation slot (3) and extends to a certain length. By the antenna, the antenna size, the cross polarization and the shielding can be reduced, and the isolation is improved.
Description
Technical field
The present invention relates to a kind of slot antenna, half slot antenna 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.Bigger metal ground can make slot antenna be not suitable for multiple-input and multiple-output (MIMO) application, causes that the cross polarization of antenna is deteriorated, 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 half slot antenna of a kind of capacitive load, this antenna can reduce the length of the radiation line of rabbet joint and the area on metal ground, and has the cross-polarized effect of suppression.
Technical scheme: half slot antenna of the capacitive load of the present invention includes medium substrate, the metal that is 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；The short at one end of the radiation line of rabbet joint, the other end is opened a way；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 half slot antenna 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.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, more half as large than the radiation slot length of 1/2nd wavelength of usual two terminal shortcircuits, therefore the overall dimensions of antenna also reduces accordingly, and occlusion effect reduces further.
Beneficial effect: half slot antenna of the capacitive load of the present invention provides the benefit that, this antenna can reduce the electric size of whole antenna, realize miniaturization, also has the cross-polarized effect suppressing antenna simultaneously.
Accompanying drawing explanation
Fig. 1 is half slot antenna overall structure figure of capacitive load.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, microstrip feed line 4, conduction band 5, the other end 6, electric capacity 7, the part 8 intersected, other parts 9, port 10, Part I conduction band 11 and Part II conduction band 12.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment of the present invention is: half slot antenna of capacitive load includes medium substrate 1, the metal ground 2 that is arranged on medium substrate 1 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；The short at one end of the radiation line of rabbet joint 3, the other end 6 is opened a way；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 half slot antenna 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.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, more half as large than the radiation slot length of 1/2nd wavelength of usual two terminal shortcircuits, therefore the overall dimensions of antenna also reduces accordingly, and occlusion effect reduces further.
In technique, half slot antenna 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.
In accordance with the above, the present invention can just be realized.
Claims (3)
1. half slot antenna of a capacitive load, it is characterised in that this antenna includes medium substrate (1), metal ground (2) that is arranged on medium substrate (1) 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)；The short at one end of the radiation line of rabbet joint (3), the other end (6) is opened a way；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. half slot antenna 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. half slot antenna of a kind of capacitive load according to claim 1, it is characterized in that described loading capacitance (7), change its quantity, capacitance and 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 |
|---|---|---|---|
| CN201610216977.6A CN105811114A (en) | 2016-04-08 | 2016-04-08 | Capacitor loaded semi-groove antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216977.6A CN105811114A (en) | 2016-04-08 | 2016-04-08 | Capacitor loaded semi-groove antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105811114A true CN105811114A (en) | 2016-07-27 |
Family
ID=56459678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216977.6A Pending CN105811114A (en) | 2016-04-08 | 2016-04-08 | Capacitor loaded semi-groove antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811114A (en) |
-
2016
- 2016-04-08 CN CN201610216977.6A patent/CN105811114A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105742822A (en) | Coplanar waveguide feed capacitor-loaded stepped impedance type half-slot antenna | |
| CN105896048A (en) | Three-polarization slot antenna with gate gap ground capacitor loading | |
| CN105703074A (en) | Gate slot ground coaxial feed capacitor loaded phase step impedance tri-polarization half-groove antenna | |
| CN105742823A (en) | Capacitance-loaded triple-polarized slot antenna | |
| CN105811114A (en) | Capacitor loaded semi-groove antenna | |
| CN105742804A (en) | Coaxial feed capacitance-loaded triple-polarized slot antenna | |
| CN105896040A (en) | Microstrip feed capacitor-loading semi-slot antenna | |
| CN105811094A (en) | Slot antenna with coplanar waveguide feed capacitance loading stepped impedance | |
| CN105742820A (en) | Coaxial feed capacitor-loaded stepped impedance type tri-polarization half-slot antenna | |
| CN105762524A (en) | Coaxial feed capacitor-loaded half slot antenna | |
| CN105762525A (en) | Grating slit ground coplanar waveguide-fed and capacitor-loaded stepped impedance half slot antenna | |
| CN105846064A (en) | Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna | |
| CN105742803A (en) | Capacitance-loaded step impedance slot antenna | |
| CN105846094A (en) | Capacitor loading slot antenna | |
| CN105896045A (en) | Three-polarization semi-slot antenna with coplanar waveguide feed capacitor-loaded step impedance | |
| CN105896051A (en) | Semi-slot antenna with coplanar waveguide feed capacitor loading | |
| CN105811093A (en) | Tri-polarization semi-slot antenna with coplanar waveguide feed capacitance loading | |
| CN105789874A (en) | Capacitor-loaded stepped-impedance triple-polarization slotted antenna | |
| CN105742821A (en) | Capacitor-loaded stepped impedance type tri-polarization half-slot antenna | |
| CN105896038A (en) | Capacity-loaded tri-polarization semi-slot antenna | |
| CN105826668A (en) | Tipple polarized semislotted antenna with coaxial feed capacitance loading | |
| CN105846085A (en) | Coplanar waveguide feed capacitor loading slot antenna | |
| CN105742805A (en) | Coplanar waveguide feed capacitance-loaded slot antenna with slits | |
| CN105896057A (en) | Slot antenna with coaxial feed capacitor loading | |
| CN105811091A (en) | Tri-polarization slot antenna with coaxial feed capacitance loading stepped impedance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |
|
| RJ01 | Rejection of invention patent application after publication |