CN106711609B - Frequency conversion method of low-profile frequency conversion four-arm spiral antenna - Google Patents
Frequency conversion method of low-profile frequency conversion four-arm spiral antenna Download PDFInfo
- Publication number
- CN106711609B CN106711609B CN201710018072.2A CN201710018072A CN106711609B CN 106711609 B CN106711609 B CN 106711609B CN 201710018072 A CN201710018072 A CN 201710018072A CN 106711609 B CN106711609 B CN 106711609B
- Authority
- CN
- China
- Prior art keywords
- low
- antenna
- frequency
- spiral
- arm
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a low-profile variable-frequency four-arm spiral antenna which comprises a low-profile variable-frequency structure, a spiral arm radiation structure and a metal floor. The low-profile variable frequency structure consists of a dielectric plate and a zigzag metal strip printed on the dielectric plate; the zigzag metal strips are arranged along the spiral direction of the spiral arm radiation structure. The zigzag metal strip is provided with sawteeth for accurately adjusting the length of the metal strip. The frequency conversion method based on the four-arm spiral antenna is also disclosed, and the effect of accurately changing the resonant frequency of the antenna is realized by sequentially cutting saw teeth on the saw-tooth metal strip. The invention has simple structure, convenient adjustment and wide applicability, can not only improve the radiation performance of the four-arm spiral antenna through the low-profile variable frequency structure, but also change the resonance frequency of the four-arm spiral antenna, and make up for the influence of frequency imbalance of the antenna caused by engineering errors, processing technology, material parameter deviation and the like.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a low-profile variable-frequency four-arm spiral antenna and a frequency modulation method aiming at the antenna.
Background
The antenna is a key unit on the satellite navigation system terminal, the satellite navigation system terminal receives electromagnetic wave signals emitted by the navigation satellites through the antenna and provides the electromagnetic wave signals for the radio frequency front end on the terminal for processing so as to acquire the navigation satellite signals and related data information, and therefore, the normal working state of the satellite navigation system terminal can be directly influenced by the performance of the antenna.
The inherent orbit distribution characteristic of the navigation satellite requires that the navigation terminal for ground wide area application has a wider antenna beam width, and simultaneously, in order to reduce the polarization loss between the navigation satellite antenna and the navigation terminal antenna, the navigation terminal antenna is required to have good circular polarization performance.
After the four-arm helical antenna was proposed in 1968, the four-arm helical antenna is widely applied to a global satellite navigation system due to the fact that the four-arm helical antenna has a circularly polarized and heart-shaped wide beam radiation field in a far zone, and correlation analysis theory and design criteria are becoming perfect. The existing four-arm spiral antenna for a navigation terminal mainly adopts a four-arm spiral antenna with a printed structure and a four-arm spiral antenna wound by metal wires, for example, chinese patent publication No. CN205646139U discloses an omnidirectional four-arm spiral antenna device which comprises a four-arm spiral radiating unit, a reflecting plate and a phase-shifting feed network, wherein the four-arm spiral radiating unit consists of four spiral radiating arms on a flexible medium circuit board, the four spiral radiating arms are connected at the bottom through a matching wire, and the input ends of the four spiral radiating arms are connected with a phase-shifting feed network below through connecting probes. The omnidirectional four-arm spiral antenna belongs to a four-arm spiral antenna with a printed structure, and low profile is realized by printing a metal strip on a flexible circuit board, and the low profile realization method is not suitable for spiral arms wound by metal wires due to the adoption of the spiral arms with the printed structure, so that the omnidirectional four-arm spiral antenna has certain limitation, and meanwhile, the problems that the actual working frequency of the antenna deviates from a design value due to errors of relative dielectric constant and thickness of the flexible circuit board, circuit processing, assembly and the like on the flexible circuit board are not considered. Because of unavoidable practical engineering and process errors, these factors must be taken into account in the antenna design process to make the designed antenna have engineering and process feasibility and practical application value. Chinese patent with issued publication number CN205583136U discloses a circularly polarized microstrip antenna capable of precisely modulating frequency, comprising: the device comprises a microstrip medium substrate, a circularly polarized microstrip patch, a metal probe connector, a metallized via hole, a feed network medium substrate, a coaxial connector, a feed network and a grounding metal; the circularly polarized microstrip patch is fixed on the upper surface of the microstrip medium substrate, the upper surface and the lower surface of the circularly polarized microstrip patch are both provided with grounding metal, and the grounding metal on the upper surface is attached to the microstrip medium substrate; the feed network is positioned in the feed network dielectric substrate, and the metal probe connector is arranged in the microstrip dielectric substrate; the energy is fed to the power divider feed network of the bridge through the coaxial connector, and then is fed to the circularly polarized microstrip patch through the metal probe connector, and the 4 sides of the circularly polarized microstrip patch are respectively extended with an adjusting branch. The microstrip antenna modulates the frequency of the microstrip antenna by changing the area of the regulation branch knot through cutting, but the same principle cannot be adopted, namely, the four-arm spiral antenna wound by the metal wire is subjected to variable frequency regulation through cutting the spiral arm. At present, the low-profile implementation of the four-arm helical antenna wound by the metal wire and the corresponding frequency conversion problem still cannot be well solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a low-profile variable-frequency four-arm spiral antenna and a variable-frequency method thereof.
The technical scheme adopted by the invention is as follows:
a low profile variable frequency quadrifilar helix antenna comprising: the device comprises a low-profile variable frequency structure, a spiral arm radiation structure and a metal floor;
the low-profile variable frequency structure consists of a dielectric plate and a zigzag metal strip printed on the dielectric plate; the zigzag metal strips are arranged along the spiral direction of the spiral arm radiation structure;
rectangular saw teeth for accurately adjusting the length of the metal strip are arranged on the saw-tooth-shaped metal strip, the saw teeth have the same shape and structure and are uniformly distributed on the metal strip;
the spiral arm radiation structure consists of four spiral arms with the same strip-shaped structure; the metal floor 3 is used as a reference ground of the spiral arm radiation structure; the upper end of the spiral arm penetrates through a dielectric plate in the low-profile variable frequency structure to be connected with the zigzag metal strip.
Preferably, the serrations are 0.1mm by 0.2mm in size.
A frequency conversion method of a low-profile frequency conversion four-arm spiral antenna is characterized in that saw teeth on a saw-tooth metal strip in a low-profile frequency conversion structure are sequentially cut, the length of the saw-tooth metal strip is adjusted, and the effect of accurately changing the resonant frequency of the four-arm spiral antenna is achieved.
Compared with the prior art, the invention has the advantages that: the four-arm spiral antenna has the advantages of simple structure, convenient adjustment and wide applicability, improves the radiation performance of the four-arm spiral antenna by increasing the low-profile variable frequency structure, and can change the resonance frequency of the four-arm spiral antenna by accurately adjusting the length of the zigzag metal strip on the low-profile variable frequency structure so as to compensate the influence of frequency imbalance of the four-arm spiral antenna caused by engineering errors, processing technology, material parameter deviation and the like.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of a zigzag metal strip in a low-profile variable frequency structure according to an embodiment of the present invention;
FIG. 3 is a graph of the reflection coefficient of an antenna according to an embodiment of the present invention;
FIG. 4 is a diagram of radiation patterns of the x-z plane corresponding to the center frequency of an antenna according to an embodiment of the present invention;
FIG. 5 is a diagram of the radiation direction of the x-z plane corresponding to the center frequency of the antenna after the low-profile variable frequency structure is removed in an embodiment of the present invention;
FIG. 6 is a graph showing reflection coefficients of antennas with different numbers of saw teeth according to an embodiment of the present invention;
FIG. 7 is a graph showing the variation of maximum right-hand circular polarization gain with frequency for different numbers of saw teeth according to an embodiment of the present invention;
reference numerals illustrate: 1. the low-profile variable frequency structure, the spiral arm radiation structure, the metal floor, the dielectric plate, the zigzag metal strip and the zigzag metal strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and examples.
As shown in fig. 1, a low-profile variable frequency quadrifilar helix antenna comprising: a low-profile variable frequency structure 1, a spiral arm radiation structure 2 and a metal floor 3;
the low-profile variable frequency structure 1 consists of a dielectric plate 11 and a zigzag metal strip 12 printed on the dielectric plate; the zigzag metal strips 12 are arranged along the winding direction of the spiral arm radiation structure;
the spiral arm radiation structure 2 consists of four spiral arms with the same strip-shaped structure; the metal floor 3 is used as a reference ground of the spiral arm radiation structure 2; the upper ends of the spiral arms penetrate through a dielectric plate 11 in the low-profile variable frequency structure 1 and are connected with a zigzag metal strip 12.
As shown in fig. 2, the zigzag metal strip 12 is provided with rectangular zigzag 13 for precisely adjusting the length of the metal strip, and the zigzag 13 has the same shape and structure and is uniformly distributed on the metal strip;
in order to achieve both frequency conversion accuracy and cutting accuracy, the saw teeth are 0.1mm by 0.2mm in size.
A frequency conversion method of a low-profile frequency conversion four-arm spiral antenna is characterized in that saw teeth on a saw-tooth metal strip in a low-profile frequency conversion structure are sequentially cut, the length of the saw-tooth metal strip is adjusted, and the effect of accurately changing the resonant frequency of the four-arm spiral antenna is achieved.
The reflection coefficient curve of the antenna at the center frequency is shown in fig. 3, the reflection coefficient of the antenna is in the frequency band range from 1.263GHz to 1.274GHz, and the reflection coefficients are all below-10 dB, which indicates that the antenna port is well matched, and the fed electromagnetic wave signals can be absorbed by the antenna.
In the embodiment of the invention, the x-z plane radiation pattern curve corresponding to the antenna center frequency is shown in fig. 4, the right-hand circular polarization gain of the antenna in the normal direction is 3.8dB, the left-hand circular polarization gain is-50 dB, and the right-hand circular polarization gain is 53.8dB greater than the left-hand circular polarization gain, which indicates that the antenna circular polarization performance is excellent.
In the embodiment of the invention, the curve of the radiation pattern of the x-z plane corresponding to the center frequency of the antenna after the low-profile variable frequency structure is removed is shown as figure 5, the right-hand circular polarization gain of the antenna in the normal direction is 2.4dB, and the left-hand circular polarization gain is-49 dB; the radiation performance of the four-arm spiral antenna is improved by adding the low-profile variable frequency structure, the right-hand circular polarization gain of the antenna in the normal direction is 3.8dB, and the left-hand circular polarization gain is-50 dB, so that the right-hand circular polarization gain of the antenna can be improved and the left-hand circular polarization gain of the antenna can be reduced by adopting the low-profile variable frequency structure.
In the embodiment of the invention, the influence of different numbers of saw teeth on the reflection coefficient of the antenna is shown in fig. 6, when the number of saw teeth is not changed, the input impedance resonant frequency of the antenna is 1.2685GHz, when the number of saw teeth is increased by two, namely 0.2mm, the input impedance resonant frequency is changed to 1.263GHz, 5.5MHz is reduced, and when the number of saw teeth is reduced by two, the input impedance resonant frequency is shortened by 0.2mm, and is changed to 1.274GHz, and the input impedance resonant frequency is increased by 5.5MHz, so that the input impedance resonant frequency of the antenna can be accurately changed by adjusting the number of saw teeth.
In the embodiment of the invention, the influence of different numbers of saw teeth on the maximum right-hand circular polarization gain of the antenna is shown in fig. 7, when the number of saw teeth is not changed, the frequency of the antenna when the right-hand circular polarization gain is maximum is 1.2685GHz, and when the number of saw teeth is increased by two, namely, the frequency of the antenna when the right-hand circular polarization gain is maximum is 1.263GHz, the frequency is reduced by 5.5MHz, and similarly, when the number of saw teeth is reduced by two, namely, the frequency of the antenna is shortened by 0.2mm, the frequency of the antenna when the right-hand circular polarization gain is maximum is 1.274GHz, and the frequency is increased by 5.5MHz, so that the resonant frequency of the antenna radiation can be accurately changed by adjusting the number of the saw teeth.
Those of ordinary skill in the art will appreciate that the embodiments described herein are intended to aid the reader in understanding the practice of the invention and that the scope of the invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (2)
1. A frequency conversion method of a low-profile frequency conversion four-arm spiral antenna is characterized by comprising the following steps of: the frequency conversion method is realized on the basis of the low-profile frequency conversion four-arm spiral antenna;
the low-profile variable frequency quadrifilar helix antenna comprises: the device comprises a low-profile variable frequency structure, a spiral arm radiation structure and a metal floor;
the low-profile variable frequency structure consists of a dielectric plate and four zigzag metal strips printed on the dielectric plate; the four zigzag metal strips are respectively distributed along the winding direction of the four spiral arm radiation structures;
rectangular saw teeth for accurately adjusting the length of the metal strip are arranged on the saw-tooth-shaped metal strip, the saw teeth have the same shape and structure and are uniformly distributed on the metal strip;
the spiral arm radiation structure consists of four spiral arms with the same strip-shaped structure; the metal floor is used as a reference ground of the spiral arm radiation structure; the upper end of the spiral arm penetrates through a dielectric plate in the low-profile variable frequency structure to be connected with the zigzag metal strip;
the frequency conversion method comprises the following steps: the length of the zigzag metal strip is adjusted by sequentially cutting the zigzag metal strip in the low-profile variable frequency structure.
2. The method for frequency conversion of a low profile variable frequency quadrifilar helix antenna according to claim 1 wherein: the saw teeth are 0.1mm by 0.2mm in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018072.2A CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018072.2A CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106711609A CN106711609A (en) | 2017-05-24 |
| CN106711609B true CN106711609B (en) | 2023-05-09 |
Family
ID=58907212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018072.2A Active CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106711609B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482309B (en) * | 2017-08-04 | 2019-10-01 | 江苏宁光通信设备有限公司 | A kind of double V-shaped side hanging frequency modulation broadcasting circular polarized antenna |
| CN109301434B (en) * | 2018-10-09 | 2020-04-14 | 江苏三和欣创通信科技有限公司 | High-precision four-arm helical antenna |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6160516A (en) * | 1999-10-07 | 2000-12-12 | Motorola, Inc. | Dual pattern antenna for portable communications devices |
| US6545649B1 (en) * | 2001-10-31 | 2003-04-08 | Seavey Engineering Associates, Inc. | Low backlobe variable pitch quadrifilar helix antenna system for mobile satellite applications |
| US20060017649A1 (en) * | 2004-07-09 | 2006-01-26 | Sooliam Ooi | Helical antenna with integrated notch filter |
| KR20090001941U (en) * | 2007-08-25 | 2009-03-02 | 이명훈 | Resonance type helical mini DMB antenna |
| CN204991964U (en) * | 2015-05-21 | 2016-01-20 | 嘉善金昌电子有限公司 | Dipole helical antenna that feed end short circuit ring matches |
| CN105244606A (en) * | 2015-11-11 | 2016-01-13 | 上海海积信息科技股份有限公司 | Quadrifilar helix antenna |
| CN105870605B (en) * | 2016-04-20 | 2019-04-05 | 电子科技大学 | A kind of ultra wide band low section circular polarisation bifilar helical antenna |
| CN206364188U (en) * | 2017-01-10 | 2017-07-28 | 成都北斗天线工程技术有限公司 | A kind of low section frequency conversion four-arm spiral antenna |
-
2017
- 2017-01-10 CN CN201710018072.2A patent/CN106711609B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| design of a dual-band quadrifilar helix antenna using stepped-width arms;Gangil Byun 等;《IEEE Transactions on Antennas and Propagation》;第第63卷卷(第第4期期);全文 * |
| design of the top-loaded quadrifilar helix antenna for low profile applications;Huang,Xin;《2016 11th International Symposium on Antennas, Propagation and EM Theory》;全文 * |
| 一种用于UWB定位系统中的组合式天线研究;陈睿 等;《2015年全国天线年会论文集（上册）中国电子学会天线分会》;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106711609A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6606061B2 (en) | Broadband circularly polarized patch antenna | |
| Chen et al. | Microstrip-fed circularly polarized square-ring patch antenna for GPS applications | |
| EP1590857B1 (en) | Low profile dual frequency dipole antenna structure | |
| CN108598667B (en) | Compact broadband circularly polarized back cavity type RFID reader antenna | |
| CN106684543B (en) | Low-profile, broadband and circularly polarized cross dipole antenna | |
| CN107681258B (en) | Small-sized high-efficiency UHF frequency band low-profile broadband antenna adopting SPP structure | |
| US20090201212A1 (en) | Antenna system having electromagnetic bandgap | |
| US7554507B2 (en) | UWB antenna with unidirectional radiation pattern | |
| CN108155460B (en) | Double-frequency omni-directional coupling support-section loaded spiral antenna and manufacturing method thereof | |
| CN106711609B (en) | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna | |
| Chang et al. | Compact single-feed dual-mode antenna for active RFID tag application | |
| JP6456506B2 (en) | Antenna device | |
| CN206364188U (en) | A kind of low section frequency conversion four-arm spiral antenna | |
| Alam et al. | Design of array and circular polarization microstrip antenna for LTE communication | |
| Hanaoui et al. | Elliptical slot rectangular patch antenna array with dual band behaviour for future 5G wireless communication networks | |
| CN110718742A (en) | Miniaturized high-gain RFID reader-writer antenna | |
| Pardhan | Design of Extended Circular Patch with Rectangular Stub and Circular Slit Used For Ultra Wide Band Application (X-Band) | |
| CN116130974A (en) | Dual-frequency circularly polarized antenna based on polarization conversion super surface | |
| CN116191053A (en) | Novel RFID yagi antenna | |
| CN112350061B (en) | Broadband electrically small antenna based on interdigital capacitive ring | |
| US20230010074A1 (en) | Electromagnetic band-gap structure | |
| Wang et al. | Design of a simple circularly polarized antenna for millimeter-wave applications | |
| KR100861882B1 (en) | Multiple Band Antenna | |
| Kashyap et al. | Multiband slotted circular microstrip patch antenna with enhanced bandwidth for satellite applications | |
| Cheng et al. | Miniaturized Circularly Polarized Metal Antenna with a Shorting Pin for Low Cost RFID Application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |