CN102117962A - Double-frequency antenna - Google Patents
Double-frequency antenna Download PDFInfo
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- CN102117962A CN102117962A CN2011100590857A CN201110059085A CN102117962A CN 102117962 A CN102117962 A CN 102117962A CN 2011100590857 A CN2011100590857 A CN 2011100590857A CN 201110059085 A CN201110059085 A CN 201110059085A CN 102117962 A CN102117962 A CN 102117962A
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Abstract
The invention relates to a double-frequency antenna comprising an upper-layer microstrip antenna, a lower-layer microstrip antenna, a baffle board and a phase shift feeding network, wherein the upper-layer microstrip antenna and the lower-layer microstrip antenna are fixed on the front of the baffle board through screws after being overlapped; the phase shift feeding network is positioned at the back of the baffle board; the upper-layer microstrip antenna carries out feeding through a double-feeding needle; the lower-layer microstrip antenna carries out coupled feeding through a via hole corresponding to the feeding needle of the upper-layer microstrip antenna on a radiating patch of the lower-layer microstrip antenna; and the feeding needle of the upper-layer microstrip antenna passes through the via hole to reach to the phase shift feeding network. The double-frequency antenna has a small size, a firm structure and a simple process and also has favorable axis ratio bandwidth and low elevation gain.
Description
Technical field
The present invention relates to field of antenna, relate in particular to a kind of dual-band antenna.
Background technology
Along with the high speed development of satellite navigation technology with in the extensive use of every field, the antenna performance of the hand-held receiving equipment in the satellite navigation and location system of high-acruracy survey has also been proposed more and more higher requirement, mainly show:
1, good circular polarization performance
In satellite communication, because circularly polarised wave rain, snow decay are little, it is strong to penetrate the ionosphere ability, is not subjected to the farad ground effects of terrestrial pole magnetic field outbreak, and satellite communication is general, and what use is the signal of circular polarization.So also should being operated in good circular polarization state accordingly, antenna could mate preferably with system.
2, can accept multiple-frequency signal
Ionosphere delay is to influence global positioning system (Global Positioning System, GPS) the main factor of absolute fix utilize to receive two-frequency signal and carry out difference processing, can effectively slacken ionospheric influence, promote positioning accuracy.
3, miniaturization, simple and reliable for structure
Because handheld device all has miniaturization, lightening trend, the space that is used to hold antenna is also more and more littler, thus antenna need can be under the prerequisite of guaranteed performance reliability, strict CONTROL VOLUME.
4, low elevation gain
In satellite communication, require antenna can when the elevation angle that is not less than 5 °, can be good at receiving satellite-signal, this just requires the gain of antenna when hanging down the elevation angle to want enough high.
Summary of the invention
The purpose of this invention is to provide a kind of dual-band antenna, to satisfy hand-held receiving equipment in the satellite navigation and location system to the requirement of antenna.Volume of the present invention is little, and is firm in structure and technology is simple, also has good axial ratio bandwidth and low elevation gain.
The present invention proposes a kind of dual-band antenna, above-mentioned antenna comprises upper strata microstrip antenna, lower floor's microstrip antenna, reflecting plate and phase shift feeding network;
Be fixed on the front of said reflection plate after above-mentioned upper strata microstrip antenna and above-mentioned lower floor microstrip antenna are overlapping by screw, above-mentioned phase shift feeding network is positioned at the back side of said reflection plate; Above-mentioned upper strata microstrip antenna is by double-fed pin feed, above-mentioned lower floor microstrip antenna is by the corresponding via hole coupling in the feedback pin position of position on its radiation patch and above-mentioned upper strata microstrip antenna feed, and the feedback pin of above-mentioned upper strata microstrip antenna passes above-mentioned perforate and arrives above-mentioned phase shift feeding network.
Preferably, above-mentioned antenna above-mentioned lower floor microstrip antenna and on say and also comprise dielectric layer between the reflecting plate.
Preferably, above-mentioned antenna also comprises a shielding box, above-mentioned shielding box be arranged on the said reflection plate back side under.
Preferably, the working frequency range of above-mentioned upper strata microstrip antenna is greater than the working frequency range of above-mentioned lower floor microstrip antenna.
Preferably, above-mentioned center of antenna is provided with the metallization via hole.
The present invention adopts the mode of upper strata microstrip antenna direct feed, lower floor's microstrip antenna coupling feed to realize two-frequency operation, the corresponding high band of upper strata microstrip antenna, the corresponding low-frequency range of lower floor's microstrip antenna; The present invention only needs a mold when producing, but and common media, reduced cost; Adopt the phase shift feeding network simultaneously the feedback pin was carried out 90 degree phase shift feeds, realized circular polarization work; Center of antenna of the present invention is provided with the metallization via hole, makes antenna possess good earth; Emulation and measured result show that all antenna of the present invention has good axial ratio bandwidth and low elevation gain, are applicable to the hand-held receiving equipment in the satellite navigation and location system of high-acruracy survey.
Description of drawings
Fig. 1 is the tangent plane schematic diagram of the preferred embodiment of dual-band antenna of the present invention;
Fig. 2 is the front schematic view of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1;
Fig. 3 is the front schematic view of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1;
Fig. 4 is the schematic rear view of the reflecting plate of the described dual-band antenna of Fig. 1;
Fig. 5 is the gain analogous diagram of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1;
Fig. 6 is the gain analogous diagram of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1;
Fig. 7 is the axial ratio analogous diagram of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1;
Fig. 8 is the axial ratio analogous diagram of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Further specify technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, be the tangent plane schematic diagram of the preferred embodiment of dual-band antenna of the present invention; Present embodiment comprises upper strata microstrip antenna 1, lower floor's microstrip antenna 2, dielectric layer 3, reflecting plate 4, be positioned at the phase shift feeding network 5 at reflecting plate 4 back sides and be positioned at shielding box 6 under reflecting plate 4 back sides; Among the figure, 11 is the radiation patch of upper strata microstrip antenna 1, and 12 is the dielectric substrate of upper strata microstrip antenna 1, and 13 is the feedback pin of upper strata microstrip antenna 1; 21 is the radiation patch of lower floor's microstrip antenna 2, and 22 is the dielectric substrate of lower floor's microstrip antenna 2, and 23 is the corresponding via hole in feedback pin 13 positions of position and upper strata microstrip antenna 1 on the radiation patch 21 of lower floor's microstrip antenna 2; 7 is the metallization via hole of above-mentioned center of antenna, and metallization via hole 7 makes that antenna integral body can good earth; 8 is screw hole; Present embodiment respectively is provided with a screw hole in the centre position, four limits of antenna, and the overlapping successively back of upper strata microstrip antenna 1, lower floor's microstrip antenna 2 and dielectric layer 3 is fixed on the reflecting plate 4 through screw hole 8 by screw; Shielding box 6 is used for isolated antennas and other circuit boards; Upper strata microstrip antenna 1 is by 13 direct feeds of two feedback pins, and two via holes 23 that two feedback pins 13 of upper strata microstrip antenna 1 pass respectively on the radiation patch 21 of lower floor's microstrip antenna 2 arrive phase shift feeding networks 5; Lower floor's microstrip antenna 2 is by the feedback pin 13 coupling feeds of via hole 23 with upper strata microstrip antenna 1.
In the present embodiment, dielectric layer 3 between lower floor's microstrip antenna 2 and the reflecting plate 4 is made up of a dielectric substrate, in other embodiments, according to the bandwidth requirement of dual-band antenna, can there be dielectric layer 3, also can be that two or more the dielectric substrate that fits together forms dielectric layer 3, such as, in actual applications, if dielectric substrate 22 thickness of lower floor's microstrip antenna 2 can satisfy the requirement of dual-band antenna to bandwidth, then can there be dielectric layer 3; If can not satisfy bandwidth requirement, then need to increase dielectric layer 3, suppose to need to increase the dielectric layer 3 of 6 millimeters thickness, the dielectric substrate that can select one 6 millimeters so is as dielectric layer 3, also can select the dielectric substrate of one 2 millimeters dielectric substrate and 4 millimeters to fit together and form dielectric layer 3.
As shown in Figure 2, be the front schematic view of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1; Among the figure, 14 is the signal hole, feedback pin 13 positions of upper strata microstrip antenna 1; Upper strata microstrip antenna 1 is by 13 direct feeds of double-fed pin; Comprise radiation patch 11, dielectric substrate 12, by metallic vias 7 ground connection; The gain analogous diagram of upper strata microstrip antenna 1 and axial ratio analogous diagram are referring to Fig. 5, Fig. 7.
As shown in Figure 3, be the front schematic view of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1; Lower floor's microstrip antenna 2 comprises radiation patch 21, dielectric substrate 22, by metallization via hole 7 ground connection at dual-band antenna of the present invention center.Among the figure, 23 is the corresponding via hole in feedback pin 13 positions of position and upper strata microstrip antenna 1 on the radiation patch 21 of lower floor's microstrip antenna 2, and lower floor's microstrip antenna 2 is by the feedback pin 13 coupling feeds of above-mentioned via hole 23 with upper strata microstrip antenna 1; The gain analogous diagram of lower floor's microstrip antenna 2 and axial ratio analogous diagram are referring to Fig. 6, Fig. 8.
As shown in Figure 4, be the schematic rear view of the reflecting plate of the described dual-band antenna of Fig. 1, phase shift feeding network 5 is positioned at the back side of reflecting plate 4, and upper and lower layer microstrip antenna utilizes phase shift feeding network 5 to produce 90 degree phase differences and realizes circular polarization.
As shown in Figure 5, be the gain analogous diagram of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1, wherein transverse axis (X-axis) is represented elevation angle angle, the longitudinal axis (Y-axis) expression antenna gain.
As shown in Figure 6, be the gain analogous diagram of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1, wherein transverse axis (X-axis) is represented elevation angle angle, the longitudinal axis (Y-axis) expression antenna gain.
As shown in Figure 7, be the axial ratio analogous diagram of the upper strata microstrip antenna of the described dual-band antenna of Fig. 1, wherein transverse axis (X-axis) is represented elevation angle angle, the longitudinal axis (Y-axis) expression axial ratio.
As shown in Figure 8, be the axial ratio analogous diagram of lower floor's microstrip antenna of the described dual-band antenna of Fig. 1, wherein transverse axis (X-axis) is represented elevation angle angle, the longitudinal axis (Y-axis) expression axial ratio.
Among the present invention, lower floor's microstrip antenna 2 as radiant body the time relative upper strata microstrip antenna 1 also play the effect of upper strata microstrip antenna 1 of serving as with reference to ground, under all identical prerequisite of the dielectric constant of the dielectric substrate of upper and lower layer microstrip antenna, the working frequency range of upper strata microstrip antenna 1 is greater than the working frequency range of lower floor's microstrip antenna 2.
Among the present invention, dielectric layer adopts the low-loss dielectric substrate of high-k, makes antenna possess good impedance bandwidth and axial ratio bandwidth on the working frequency points that requires, and is applicable in the hand-held receiving equipment of satellite navigation system of high-acruracy survey.
Below only be the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent transformation that utilizes content of the present invention to do, or with the present invention directly/be used in concrete equipment or other relevant technical fields indirectly, include in scope of patent protection of the present invention.
Claims (5)
1. a dual-band antenna is characterized in that, described antenna comprises upper strata microstrip antenna, lower floor's microstrip antenna, reflecting plate and phase shift feeding network;
Be fixed on the front of described reflecting plate after described upper strata microstrip antenna and described lower floor microstrip antenna are overlapping by screw, described phase shift feeding network is positioned at the back side of described reflecting plate; Described upper strata microstrip antenna is by double-fed pin feed, described lower floor microstrip antenna is by the corresponding via hole coupling in the feedback pin position of position on its radiation patch and described upper strata microstrip antenna feed, and the feedback pin of described upper strata microstrip antenna passes described perforate and arrives described phase shift feeding network.
2. dual-band antenna according to claim 1 is characterized in that, described antenna also comprises dielectric layer between described lower floor microstrip antenna and said reflecting plate.
3. dual-band antenna according to claim 1 and 2 is characterized in that described antenna also comprises a shielding box, described shielding box be arranged on the described reflecting plate back side under.
4. dual-band antenna according to claim 1 is characterized in that, the working frequency range of described upper strata microstrip antenna is greater than the working frequency range of described lower floor microstrip antenna.
5. dual-band antenna according to claim 1 and 2 is characterized in that described center of antenna is provided with the metallization via hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110059085A CN102117962B (en) | 2011-03-11 | 2011-03-11 | Double-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110059085A CN102117962B (en) | 2011-03-11 | 2011-03-11 | Double-frequency antenna |
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| CN102117962A true CN102117962A (en) | 2011-07-06 |
| CN102117962B CN102117962B (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110059085A Expired - Fee Related CN102117962B (en) | 2011-03-11 | 2011-03-11 | Double-frequency antenna |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610909A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Single-fed dual-bandwidth wave beam circular polarization antenna |
| CN102882013A (en) * | 2012-09-26 | 2013-01-16 | 华为技术有限公司 | Low-profile broadband antenna array and antenna |
| CN103094678A (en) * | 2012-12-31 | 2013-05-08 | 西安电子科技大学 | Active wide band miniaturized navigation antenna |
| CN103457029A (en) * | 2013-09-04 | 2013-12-18 | 北京合众思壮科技股份有限公司 | Dual-band antenna |
| WO2014176868A1 (en) * | 2013-05-02 | 2014-11-06 | 深圳市华信天线技术有限公司 | Combined antenna and handheld antenna device |
| CN106384887A (en) * | 2016-11-01 | 2017-02-08 | 李燕如 | LNB module with metal shielding cover |
| CN108615687A (en) * | 2012-05-04 | 2018-10-02 | 日月光半导体制造股份有限公司 | Integrate the semiconductor package part of screened film and antenna |
| CN109066055A (en) * | 2018-09-28 | 2018-12-21 | 维沃移动通信有限公司 | A kind of terminal device |
| CN110896165A (en) * | 2018-09-13 | 2020-03-20 | Tdk株式会社 | On-chip antenna |
| CN111725622A (en) * | 2019-03-21 | 2020-09-29 | 三星电机株式会社 | Antenna device |
| CN114069218A (en) * | 2021-10-28 | 2022-02-18 | 荣耀终端有限公司 | Dual-port microstrip antenna, antenna decoupling method and electronic equipment |
| CN115101930A (en) * | 2022-07-15 | 2022-09-23 | 广东工业大学 | Dual-frequency satellite navigation antenna with edge-loaded resonant branches |
| CN115764270A (en) * | 2022-11-09 | 2023-03-07 | 上海尚远通讯科技有限公司 | Double-feed-point laminated circular polarization GNSS antenna |
| US11791569B2 (en) | 2018-09-30 | 2023-10-17 | Huawei Technologies Co., Ltd. | Antenna and terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311670A (en) * | 2013-05-30 | 2013-09-18 | 深圳市华信天线技术有限公司 | Satellite positioning antenna device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689486Y (en) * | 2004-04-07 | 2005-03-30 | 顾志忠 | Antenna of radiating array telecommunicating base station with high-power microwave |
-
2011
- 2011-03-11 CN CN201110059085A patent/CN102117962B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689486Y (en) * | 2004-04-07 | 2005-03-30 | 顾志忠 | Antenna of radiating array telecommunicating base station with high-power microwave |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610909A (en) * | 2012-03-01 | 2012-07-25 | 西安电子科技大学 | Single-fed dual-bandwidth wave beam circular polarization antenna |
| CN108615687A (en) * | 2012-05-04 | 2018-10-02 | 日月光半导体制造股份有限公司 | Integrate the semiconductor package part of screened film and antenna |
| CN102882013A (en) * | 2012-09-26 | 2013-01-16 | 华为技术有限公司 | Low-profile broadband antenna array and antenna |
| CN103094678A (en) * | 2012-12-31 | 2013-05-08 | 西安电子科技大学 | Active wide band miniaturized navigation antenna |
| WO2014176868A1 (en) * | 2013-05-02 | 2014-11-06 | 深圳市华信天线技术有限公司 | Combined antenna and handheld antenna device |
| CN103457029A (en) * | 2013-09-04 | 2013-12-18 | 北京合众思壮科技股份有限公司 | Dual-band antenna |
| CN106384887A (en) * | 2016-11-01 | 2017-02-08 | 李燕如 | LNB module with metal shielding cover |
| CN110896165A (en) * | 2018-09-13 | 2020-03-20 | Tdk株式会社 | On-chip antenna |
| CN109066055A (en) * | 2018-09-28 | 2018-12-21 | 维沃移动通信有限公司 | A kind of terminal device |
| EP3859880A4 (en) * | 2018-09-28 | 2021-11-17 | Vivo Mobile Communication Co., Ltd. | Terminal device |
| US11688953B2 (en) | 2018-09-28 | 2023-06-27 | Vivo Mobile Communication Co., Ltd. | Terminal device |
| US11791569B2 (en) | 2018-09-30 | 2023-10-17 | Huawei Technologies Co., Ltd. | Antenna and terminal |
| CN111725622A (en) * | 2019-03-21 | 2020-09-29 | 三星电机株式会社 | Antenna device |
| CN114069218A (en) * | 2021-10-28 | 2022-02-18 | 荣耀终端有限公司 | Dual-port microstrip antenna, antenna decoupling method and electronic equipment |
| CN114069218B (en) * | 2021-10-28 | 2023-09-29 | 荣耀终端有限公司 | Dual-port microstrip antenna, antenna decoupling method and electronic equipment |
| CN115101930A (en) * | 2022-07-15 | 2022-09-23 | 广东工业大学 | Dual-frequency satellite navigation antenna with edge-loaded resonant branches |
| CN115101930B (en) * | 2022-07-15 | 2022-11-15 | 广东工业大学 | Dual-frequency satellite navigation antenna with edge-loaded resonant branches |
| CN115764270A (en) * | 2022-11-09 | 2023-03-07 | 上海尚远通讯科技有限公司 | Double-feed-point laminated circular polarization GNSS antenna |
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| CN102117962B (en) | 2012-08-29 |
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Granted publication date: 20120829 Termination date: 20170311 |