CN106291623A - Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies - Google Patents

Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies Download PDF

Info

Publication number
CN106291623A
CN106291623A CN201510267780.0A CN201510267780A CN106291623A CN 106291623 A CN106291623 A CN 106291623A CN 201510267780 A CN201510267780 A CN 201510267780A CN 106291623 A CN106291623 A CN 106291623A
Authority
CN
China
Prior art keywords
antenna
frequency
ceramic medium
band
broadband
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
Application number
CN201510267780.0A
Other languages
Chinese (zh)
Inventor
张建城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510267780.0A priority Critical patent/CN106291623A/en
Publication of CN106291623A publication Critical patent/CN106291623A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/35Constructional details or hardware or software details of the signal processing chain
    • G01S19/36Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
    • GPHYSICS
    • G04HOROLOGY
    • G04RRADIO-CONTROLLED TIME-PIECES
    • G04R20/00Setting the time according to the time information carried or implied by the radio signal
    • G04R20/02Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
    • G04R20/04Tuning or receiving; Circuits therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies of the present invention includes broadband ceramic medium antenna, single-frequency ceramic medium antenna, and band-pass filter, double-sided printing copper-clad plate, it is characterized mainly in that broadband ceramic medium antenna is independently fabricated to cover wideband and the single-frequency reception antenna of three different frequency ranges according to GNSS frequency spectrum, realize multimode all-frequency-band by the organic assembling of obstructed band antenna to receive, fully taken into account satellite navigation time service antenna to band bandwidth and antenna gain two aspect requirement simultaneously, it is particularly conducive to meet the specific demand that circular polarized antenna is miniaturized by mobile navigation equipment.The invention belongs to satellite time transfer navigational communications field.

Description

Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies
Technical field
The present invention relates to a kind of big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies, the suitableeest Synchronize for the time service of mobile communication apparatus station, and apply in next-generation mobile communications and positioning navigation device. Belong to mobile communication and satellite positioning navigation field.
Background technology
Set up compatible satellite navigation and time service receives equipment and becomes common recognition at GNSS circle.I State specializes in the manufacturers of semiconductor devices of field of satellite navigation in QualCom and the Switzerland U-blox public affairs of continuing After department, the most in succession develop the radio frequency base of other GNSS compatible while be main with Beidou II Band integration demodulation chip, develops various satellite navigation application products for China and lays a good foundation.But, Make compatible satellite navigation time service reception device not only to need to realize multi-mode radio frequency base band integration solution aligning The breakthrough of sheet, also must solve being of coupled connections, especially of multi-mode satellite reception antenna and baseband chip simultaneously It is that mobile navigation equipment instantly needs miniaturization and the miniaturization solving multimode antenna badly.Before this, beautiful The compatible timing and navigation test equipment of company's exploitations such as state Trimble (Tian Bao) company and Sweden NovAtel The most independent GPS and the GLONASS single-band antenna of main employing is combined, or design all-in-one-piece is big Type multimode metal antenna couples with radio frequency amplifier.China's Beidou II passive navigation satellite is because launching in advance And preferentially occupy the civilian frequency of 1561.098MHz, and this frequency and GPS and GALILEO share Closely, then inventor takes the lead in using bimodal wide band radio-frequency record principle the civilian frequency of 1575.42MHz Miniature ceramic medium antenna is selected to achieve Beidou II and GPS dual-mode broadband reception, and in mobile base station Test successfully on time service antenna, this technology is write in patent documentation 200810080082.X, hereafter simultaneously Further by included for civilian for GLONASS frequency in patent 200910073942.1, but come from experiment See, be intended to the compatible all band GNSS satellite navigation system of high-quality realization and also need to further multimode antenna be entered Row is improved.The most why prioritizing selection ceramic medium antenna realizes multimode broadband to inventor connects Receiving, its reason is that ceramic medium antenna is compared other material and had high-k, high q-factor, temperature Drift about little, dielectric loss is low, circular polarisation technology maturation and be easy to miniaturization advantage, particularly moving Base station must assure that its high reliability as time service antenna, and therefore ceramic medium antenna just becomes only option. But, unavoidably run in using ceramic medium antenna compatibility all band GNSS system and take into account frequency band band The wide dilemma with antenna gain, if using the most compatible four kinds of GNSS system of integrated design to realize Multimode receives, and necessarily reduces antenna gain because frequency band is wide, especially as passive antenna at mobile terminal Middle direct-coupling radio frequency baseband circuit, antenna gain just becomes important option.Although existing a lot of manufacturers sound Claim to use layering superimposing technique to sinter out compatible system-wide broadband ceramic dielectric circular polarized antenna, but from institute The major parameter be given sees its performance not fully up to expectations.The most how to realize ceramic dielectric circle The miniaturization of poliarizing antenna and miniaturization.Obviously, ceramic dielectric circular polarized antenna in terms of miniaturization remote the most not As horizontally-polarized antenna easily makes, ceramic medium material is therefore used to make multimode miniature circular poliarizing antenna Realize multimode reception nature and become another technical task urgently to be resolved hurrily.
Summary of the invention
Subject matter to be solved by this invention be overall planning based on Beidou II, simultaneously compatible The multimode timing and navigation radio-frequency front-end Antenna Assemblies of four kinds of GNSS system, its objective is to evade complexity Design and processing technique, use manufacturing technology frequency-division section that is ripe and that be prone to processing to manufacture multimode antenna, and Realize multimode Whole frequency band by brand-new compound mode to receive.This Antenna Assemblies is particularly suitable for moving Navigation terminal is connected with radio frequency amplifier and base band demodulator direct-coupling as passive antenna.
Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies of the present invention includes that broadband pottery is situated between Matter antenna, single-frequency ceramic medium antenna, and band-pass filter, double-sided printing copper-clad plate, mainly It is characterised by: broadband ceramic medium antenna independently makes the width covering different frequency range according to GNSS frequency spectrum Band reception antenna, shares including 1561.098MHz and GPS, the Galileo covering " Beidou II " B1 The civil band broadband ceramic medium antenna of 1575.42MHz frequency;Cover Beidou II B2 B3, GPS L2 L5, Galileo E5A E5B, and L2 the army and the people's dual-purpose frequency range of GLONASS broadband pottery Diectric antenna;Also the GLONASS single-frequency ceramic medium antenna making frequency at 1602.56MHz is included; Described Antenna Assemblies refers to according to using environment broadband ceramic medium antenna or single-frequency to be made pottery selectively Ceramic dielectric antenna is combined, and the method using upper and lower superposition or plane to split is fixed, to guarantee High-quality multimode broadband receives, and connects band-pass filter input, output after antenna lead parallel connection End connects active antenna radio-frequency front-end low-noise amplifier or passive RF front-end low noise amplifier;Broadband Ceramic medium antenna and single-frequency ceramic medium antenna are arranged at double-sided printing copper-clad plate side, and by lead-in wire Connect band-pass filter input.
Above-mentioned broadband ceramic medium antenna and single-frequency ceramic medium antenna select planar structure or cylinder Body helical structure makes ceramic dielectric circular polarized antenna;Described cylinder spiral ceramic dielectric circular polarized antenna For single armed or two-arm or four arm spiral ceramic dielectric circular polarized antennas;
Above-mentioned band-pass filter is broadband band-pass filter, or also serve as bridge circuit be broadband pottery The Antenna Assemblies of diectric antenna and single-frequency ceramic medium antenna composition is balanced coupling;
Above-mentioned broadband ceramic medium antenna and the single-frequency ceramic medium antenna following compound mode of selection:
1) the independent planar broad band ceramic medium antenna made and plane single-frequency ceramic dielectric sky are used Line combines, or selects planar broad band ceramic medium antenna to combine with planar broad band ceramic medium antenna, then Use upper and lower laminated structure to fix, or use plane to fix side by side;Antenna lead connects preposition bandpass filtering Device input;This combination is suitable for mobile base station or vehicle-mounted, naval vessel or electric power timing and navigation active antenna Configuration;
2) planar broad band ceramic medium antenna and the combination of single-frequency spiral ceramic medium antenna, plane width Band ceramic medium antenna and single-frequency spiral ceramic medium antenna use upper and lower stacked system to fix, or use flat It is fixing that face splits arrangement, and antenna lead is all connected with band-pass filter input;
3) broadband helical ceramic medium antenna and single-frequency spiral ceramic medium antenna combine or two Broadband helical ceramic medium antenna combination or two broadband helical ceramic medium antenna and single-frequency spiral pottery Diectric antenna combines, and above-mentioned Antenna Assemblies splits in double-sided printing copper-clad plate side;Antenna lead is equal Connect band-pass filter input.
The invention have benefit that and fully taken into account satellite navigation time service antenna to band bandwidth With antenna gain two aspect requirement, the satellite frequency that frequency is low and close uses broadband to cover, and frequency is high GLONASS satellite carrier signal then use single-frequency to arrange, the particularly a width of 10MHz of its band, therefore will It is independently arranged and is i.e. conducive to antenna manufacture to be also beneficial to the overall radio-frequency technique parameter after ensureing combination.Adopt Combining with plane and helical antenna is based on the mobile device particular/special requirement to miniaturization, if application Target is time service or measurement equipment and be proposed with flat circle poliarizing antenna higher to required precision combines relatively Good.The advantage of this Antenna Assemblies maximum is can be the spirit of mobile communication navigation equipment according to target market Option and installment alive.Special needs to be pointed out is, the present invention incompatible Big Dipper generation aeronautical satellite duplexed antenna, This is the difference maximum with other multimodal satellite navigation device.The especially suitable civilian shifting of this antenna combination Dynamic communication navigation set and mobile base station time service and electric power time service equipment are used.
Accompanying drawing explanation
Fig. 1 is the present invention two multiband planar ceramic medium antenna stack combinations schematic diagram
Fig. 2 is the present invention two multiband planar and spiral ceramic medium antenna stack combinations schematic diagram
Fig. 3 is the present invention three multiband planar and spiral ceramic medium antenna stack combinations schematic diagram
Fig. 4 is that the present invention two wave band spiral ceramic medium antenna horizontal layout combines schematic diagram
Fig. 5 is that the present invention three wave band spiral ceramic medium antenna horizontal layout combines schematic diagram
Fig. 6 is plane of the present invention and spiral ceramic medium antenna horizontal layout combination schematic diagram
Wherein: 1 the army and the people's dual-purpose frequency range plane or spiral broadband ceramic medium antenna, 2 citizens' radio bands Plane or spiral broadband ceramic medium antenna, 3 single-frequency plane ceramic diectric antennas, 4 single-frequency spiral potteries are situated between Matter antenna, 5 low noise active antenna amplifiers, 6 double-sided printing copper-clad plates
Detailed description of the invention
Following example illustrate with mobile base station time-service active antenna.
Embodiment 1
Cover planar broad band ceramic medium antenna 2 and the plane single-frequency ceramic dielectric sky of citizens' radio band Line about 3 stack combinations, is fixed on double-sided printing copper-clad plate 6 side, and antenna lead is coaxially disposed and connects Connect the band-pass filter input of low noise active antenna amplifier 5.As shown in Figure 1.
Embodiment 2
Cover plane broadband ceramic medium antenna 2 and the single-frequency spiral ceramic dielectric sky of citizens' radio band Line about 4 stack combinations, is fixed on double-sided printing copper-clad plate 6 side, and antenna lead is coaxially disposed and connects Connect the band-pass filter input of low noise active antenna amplifier 5.As shown in Figure 2.
Embodiment 3
Cover the planar broad band ceramic medium antenna 1 of the army and the people's dual-purpose frequency range, cover the flat of citizens' radio band Face width band ceramic medium antenna 2 and single-frequency spiral ceramic medium antenna about 4 stack combinations, be fixed on double Copper-clad plate 6 side is printed in face, and antenna lead is coaxially disposed and connects low noise active antenna amplifier 5 Band-pass filter input.As shown in Figure 3.
Embodiment 4
Cover spiral broadband ceramic medium antenna 2 and the single-frequency spiral ceramic medium antenna of citizens' radio band 4 parallel combinations are fixed on double-sided printing copper-clad plate 6 side, the coaxially connected band-pass filter of antenna lead Input.As shown in Figure 4.
Embodiment 5
Cover the spiral broadband ceramic medium antenna 1 of the army and the people's dual-purpose frequency range, cover the spiral shell of citizens' radio band Rotation broadband ceramic medium antenna 2 and single-frequency spiral ceramic medium antenna 4 parallel combinations are fixed on double-sided printing Copper-clad plate 6 side, antenna lead connects band-pass filter input.As shown in Figure 5.
Embodiment 6
Cover planar broad band ceramic medium antenna 1 and the single-frequency spiral ceramic dielectric of the army and the people's dual-purpose frequency range Antenna 4 parallel combinations is fixed on double-sided printing copper-clad plate 6 side, and antenna lead connects preposition bandpass filtering Device input.
Embodiment 7
Cover the spiral broadband ceramic medium antenna 1 of military frequency range or cover the spiral of citizens' radio band Broadband ceramic medium antenna 2 and single-frequency spiral ceramic medium antenna 4 parallel combinations are fixed on mobile communication and set Standby double-sided printing copper-clad plate 6 two ends, connect antenna and band-pass filter input by lead-in wire.Should Combination priority is applied to individual soldier's nav-com installation.
Embodiment 8
Cover planar broad band ceramic medium antenna 2 and the single-frequency spiral ceramic medium antenna of citizens' radio band 4 parallel combinations are fixed on mobile communication equipment double-sided printing copper-clad plate 6 two ends, by lead-in wire connect antenna and Band-pass filter input.This combination suitable for movable communication equipment.
The present invention is the GNSS system multimode compatible antenna combination unit based on Beidou II, Therefore, all identical or equivalents with this technical implementation way and principle, its essence each falls within the present invention The row of protection, being engaged in these those skilled in the art should be with understanding.

Claims (4)

  1. Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies the most of the present invention includes broadband ceramic medium antenna, list Frequently ceramic medium antenna, and band-pass filter, double-sided printing copper-clad plate, be characterized mainly in that: wide Independently make the broad-band reception antenna of covering different frequency range, bag according to GNSS frequency spectrum with ceramic medium antenna Include the 1575.42MHz frequency that 1561.098MHz and GPS, the Galileo of covering " Beidou II " B1 share The civil band broadband ceramic medium antenna of point;Cover Beidou II B2 B3, GPS L2 L5, Galileo E5A E5B, and the broadband ceramic medium antenna of L2 the army and the people's dual-purpose wave band of GLONASS;Also system is included Make the frequency GLONASS single-frequency ceramic medium antenna at 1602.56MHz;Described Antenna Assemblies refers to root According to using environment broadband ceramic medium antenna or single-frequency ceramic medium antenna to be combined selectively, and adopt The method split with upper and lower superposition or plane is fixed, to guarantee that high-quality multimode broadband receives, and antenna Connecting band-pass filter input after lead-in wire parallel connection, outfan connects active antenna radio-frequency front-end low noise Amplifier or passive RF front-end low noise amplifier;Broadband ceramic medium antenna and single-frequency ceramic medium antenna It is arranged at double-sided printing copper-clad plate side, and connects band-pass filter input by lead-in wire.
  2. Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies the most according to claim 1, it is characterised in that: Above-mentioned broadband ceramic medium antenna and single-frequency ceramic medium antenna select planar structure or cylinder helical structure system Make ceramic dielectric circular polarized antenna;Described cylinder spiral ceramic dielectric circular polarized antenna be single armed or two-arm, Or four arm spiral ceramic dielectric circular polarized antennas.
  3. Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies the most according to claim 1, it is characterised in that: Above-mentioned band-pass filter is broadband band-pass filter, or also serve as bridge circuit be broadband ceramic medium antenna with And the Antenna Assemblies of single-frequency ceramic medium antenna composition is balanced coupling.
  4. Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies the most according to claim 1, it is characterised in that: Above-mentioned broadband ceramic medium antenna and the single-frequency ceramic medium antenna following compound mode of selection:
    1) the independent planar broad band ceramic medium antenna made and the combination of plane single-frequency ceramic medium antenna, or choosing are used Select planar broad band ceramic medium antenna to combine with planar broad band ceramic medium antenna, then use order up and down folded It is fixed, or uses plane to fix side by side;Antenna lead connects band-pass filter input;This combination It is suitable for mobile base station or vehicle-mounted, naval vessel or the configuration of electric power timing and navigation active antenna;
    2) planar broad band ceramic medium antenna and the combination of single-frequency spiral ceramic medium antenna, planar broad band ceramic dielectric sky Line and single-frequency spiral ceramic medium antenna use upper and lower stacked system to fix, or it is fixing to use plane to split arrangement, Antenna lead is all connected with band-pass filter input;
    3) broadband helical ceramic medium antenna and single-frequency spiral ceramic medium antenna combine or two broadband helical potteries Diectric antenna combination or two broadband helical ceramic medium antenna and single-frequency spiral ceramic medium antenna are combined, Above-mentioned Antenna Assemblies splits in double-sided printing copper-clad plate side;Antenna lead is all connected with preposition bandpass filtering Device input.
CN201510267780.0A 2015-05-25 2015-05-25 Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies Pending CN106291623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510267780.0A CN106291623A (en) 2015-05-25 2015-05-25 Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510267780.0A CN106291623A (en) 2015-05-25 2015-05-25 Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies

Publications (1)

Publication Number Publication Date
CN106291623A true CN106291623A (en) 2017-01-04

Family

ID=57633290

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510267780.0A Pending CN106291623A (en) 2015-05-25 2015-05-25 Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies

Country Status (1)

Country Link
CN (1) CN106291623A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109103587A (en) * 2018-08-06 2018-12-28 上海海积信息科技股份有限公司 A kind of new antenna
CN111077762A (en) * 2018-10-22 2020-04-28 张建城 Beidou multimode time service receiving device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7429952B2 (en) * 2005-12-23 2008-09-30 Hemisphere Gps Inc. Broadband aperture coupled GNSS microstrip patch antenna
CN101752653A (en) * 2008-12-12 2010-06-23 石家庄世纪森诺通讯有限公司 Double-mode time service active antenna
CN101800363A (en) * 2009-02-10 2010-08-11 石家庄世纪森诺通讯有限公司 Integrated double-mode time-service active antenna and double-mode analog-digital demodulation module
CN102932020A (en) * 2012-06-14 2013-02-13 张建城 Beidou multimode time service receiving device
CN204882876U (en) * 2015-05-25 2015-12-16 张建城 Big dipper multimode time service navigation radio frequency front end antenna composite set

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7429952B2 (en) * 2005-12-23 2008-09-30 Hemisphere Gps Inc. Broadband aperture coupled GNSS microstrip patch antenna
CN101752653A (en) * 2008-12-12 2010-06-23 石家庄世纪森诺通讯有限公司 Double-mode time service active antenna
CN101800363A (en) * 2009-02-10 2010-08-11 石家庄世纪森诺通讯有限公司 Integrated double-mode time-service active antenna and double-mode analog-digital demodulation module
CN102932020A (en) * 2012-06-14 2013-02-13 张建城 Beidou multimode time service receiving device
CN204882876U (en) * 2015-05-25 2015-12-16 张建城 Big dipper multimode time service navigation radio frequency front end antenna composite set

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐颖: "双频圆极化小型化天线的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109103587A (en) * 2018-08-06 2018-12-28 上海海积信息科技股份有限公司 A kind of new antenna
CN109103587B (en) * 2018-08-06 2024-01-05 上海海积信息科技股份有限公司 Four-arm spiral antenna
CN111077762A (en) * 2018-10-22 2020-04-28 张建城 Beidou multimode time service receiving device

Similar Documents

Publication Publication Date Title
EP3065219B1 (en) Dual-frequency patch antennas
CN103713294B (en) Whole frequency band GNSS receiver
US10509131B2 (en) Hardware front-end for a GNSS receiver
JP2024512360A (en) Polarization configurable GNSS smartphone antenna
US8442577B2 (en) Wireless communication apparatus with an antenna shared between a plurality of communication circuits
WO2013063922A1 (en) Radio frequency transceiver, terminal, and signal receiving method of the terminal
EP3086477B1 (en) Antenna system, integrated communication structure and terminal
US8868126B2 (en) Mobile apparatus with radio frequency architecture supporting simultaneous data and voice communications
CN104505599A (en) Satellite navigation positioning antenna
CN109659666B (en) Intelligent antenna
US9094098B2 (en) Multi-band radio frequency (RF) communication device using a single antenna
CN102394667A (en) Mobile terminal and GPS and 3G single-antenna realizing device
CN103779672A (en) Multiband antenna
CN104811217A (en) Semiconductor device, and transmission and reception circuit
CN101872010B (en) Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module
CN106291623A (en) Big dipper multi-mode timing and navigation radio-frequency front-end Antenna Assemblies
CN204882876U (en) Big dipper multimode time service navigation radio frequency front end antenna composite set
CN203747048U (en) Multiband antenna
US11757423B2 (en) High harmonic performance radio frequency filter
CN111077762A (en) Beidou multimode time service receiving device
CN117890937A (en) Radio frequency front end of satellite navigation system, receiver and electronic equipment
CN108155468B (en) Bimodulus double frequency round polarized antenna with CSRR distributed controll and set loop coupling ground
CN208444011U (en) The miniature navigational communications module of compatible Integrated Service Digital Network antenna
JP2020537419A (en) RF signal aggregator and antenna system that implements it
CN105024137A (en) Multi-frequency communication antenna device and GNSS receiver with multi-frequency communication antenna device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170104

WD01 Invention patent application deemed withdrawn after publication