CN102496783A - Wideband satellite positioning micro-band receiving antenna based on multiband and multisystem - Google Patents
Wideband satellite positioning micro-band receiving antenna based on multiband and multisystem Download PDFInfo
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- CN102496783A CN102496783A CN2011103932644A CN201110393264A CN102496783A CN 102496783 A CN102496783 A CN 102496783A CN 2011103932644 A CN2011103932644 A CN 2011103932644A CN 201110393264 A CN201110393264 A CN 201110393264A CN 102496783 A CN102496783 A CN 102496783A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
Abstract
The invention discloses a multiband and multisystem satellite positioning wideband receiving antenna adopting polytetrafluoroethylene as medium, comprising an upper-layer micro-band antenna, a lower-layer micro-band antenna and a feed network printing circuit board, wherein the upper-layer micro-band antenna is provided with an upper-layer electrode piece; the lower-layer micro-band antenna is provided with a lower-layer electrode piece; and the feed network printing circuit board is arranged at a bottom layer. The multi-band and multi-system satellite positioning wideband receiving antenna is characterized in that the feed network printing circuit board comprises a first bridge coupler, a second bridge coupler, a third bridge coupler, a fourth bridge coupler, a fifth bridge coupler, a sixth bridge coupler, a first filter, a second filter, a first low-noise amplifier, a second low-noise amplifier, a third low-noise amplifier, a fourth low-noise amplifier, a synthesizer and a fifth low-noise amplifier. The three-star multifrequency micro-band receiving antenna is used as a multi-star multifrequency wideband antenna which can cover GPSL1/L2/L5, GLONASSL1/L2, big dipper L/B1/B2/B3 and GALILEO L1/E1/E2/E5/E6.
Description
Technical field:
The present invention relates to a kind of reception antenna, particularly a kind of polytetrafluoroethylene that adopts is the broadband satellite fix Microstrip Receiving Antenna based on the multiband multisystem of medium.
Background technology:
As everyone knows; Existing double-frequency micro-strip antenna is as measurement type antenna; Usually can only receive from GPS (Global Positioning System global positioning system) L1 frequency band signals with from GLONASS (Global Navigation Satellite System GLONASS) signal of L1 frequency range or the signal of two above successive bands, like the L1 frequency range of the L1 frequency range of gps system, GLONASS system and the Chinese Big Dipper two generations system navigation frequency range etc.
Development along with multimodal satellite navigation, location technology; Need multisystem that navigation, positioning service are provided simultaneously; Therefore, the user can select to accept needed satellite-signal as required voluntarily in actual use, and the performance of antenna is directly connected to the height of final certainty of measurement; The variation of antenna phase center and multipath effect are to influence the topmost source of error of precision, and the antenna low elevation gain influences the sensitivity of receiver.The navigation of using is at present accepted in the antenna, and its frequency coverage, radiation beam width etc. are difficult to reach simultaneously practical requirement.
The phase center of antenna and its geometric center should be consistent in theory.Yet; The phase center of antenna is actually that intensity with signal input is different with direction to be changed; Instantaneous position of phase center when promptly observing (generally claiming phase center) and theoretic phase center are with inconsistent, and this deviation is called the antenna phase center position deviation.The influence of this deviation can reach several millimeters to several centimetres, is a major issue in the Antenna Design so how to reduce the antenna phase center position deviation.Common antenna all is to have only a distributing point, the phase center poor stability of this kind antenna, and ability of anti-multipath is poor.
Summary of the invention:
In view of above-mentioned technical problem, the invention provides a kind of polytetrafluoroethylene that adopts is the broadband satellite fix Microstrip Receiving Antenna based on the multiband multisystem of medium.This Antenna Design is that a plurality of feeds are accepted the RF signal, through optimizing the arrangement of of feed, makes that physics phase place and the electric phase center of accepting a plurality of frequency band signals can be coaxial; Make the deviation that receives signal be almost 0; Reach the purpose that suppresses the multipath interference signal, simultaneously, because multi-band signal has stable same phase center; Therefore, adopt this antenna also to possess the characteristics of phase center stability preferably.This antenna can receive L1 from GPS (1575+/-12MHZ); L2 (1227+/-12MHZ) and L5 (1176MHZ) frequency band signals and from the L1 of GLONASS (1609+/-7MHZ) and L2 (1252+/-7MHZ) frequency range signal with from GALILEOL1 (1575+/-12MHZ); E1 (1602+/-7MHZ); E2 (1560+/-1MHZ); E5B (1200+/-7MHZ); E6 (1278+/-12MHZ) and from Big Dipper L (1616MHZ); B1 (1561+/-2MHZ); B2 (1207+/-10MHZ) and B3 (1268+/-10MHZ) signal of frequency range.This antenna structure is simple relatively simultaneously, and it is very high to receive precision.
Concrete technical scheme of the present invention is following:
Based on the broadband satellite fix Microstrip Receiving Antenna of multiband multisystem, comprise upper strata microstrip antenna, lower floor's microstrip antenna and place the feeding network printed circuit board (PCB) of bottom;
It is 4mm's that said upper strata microstrip antenna adopts long 75mm, wide 75mm, thickness; With dielectric constant is that 2.62 ± 0.2 polytetrafluoroethylene is the polygon antenna of medium; It is 4mm's that said lower floor microstrip antenna adopts long 90mm, wide 90mm, thickness; With dielectric constant is that 2.62 ± 0.2 polytetrafluoroethylene is the polygon antenna of medium, and said upper strata microstrip antenna is connected with the feeding network printed circuit board (PCB) through many modes with the feedback pin with the lower floor microstrip antenna;
The said feeding network of stating on the printed circuit board (PCB) comprises the first electric bridge coupler, the second electric bridge coupler, the 3rd electric bridge coupler, the 4th electric bridge coupler, the 5th electric bridge coupler, the 6th electric bridge coupler, first filter, second filter, the 3rd filter, the 4th filter, first low noise amplifier, second low noise amplifier, the 3rd low noise amplifier, the 4th low noise amplifier, the 5th noise amplifier and synthesizer; Wherein the signal of the feedback point of two adjacent said upper strata microstrip antennas inputs to the 5th electric bridge coupler after the said first electric bridge coupler is coupled into one road signal; The signal of the feedback point of two adjacent said upper strata microstrip antennas inputs to the 5th electric bridge coupler after the said second electric bridge coupler is coupled into one road signal in addition; Wherein the signal of the feedback point of two adjacent said lower floor microstrip antennas inputs to the 6th electric bridge coupler after said the 3rd electric bridge coupler is coupled into one road signal; The signal of the feedback point of two adjacent said lower floor microstrip antennas inputs to the 6th electric bridge coupler after said the 4th electric bridge coupler is coupled into one road signal in addition;
Said the 5th electric bridge coupler is coupled into one road signal with the two paths of signals by said first electric bridge coupler and the input of the said second electric bridge coupler that is received, and this signal inputs to synthesizer through said first filter filtering, the amplification of said first low noise amplifier, said the 3rd filter filtering, said second low noise amplifier after amplifying successively; Said the 6th electric bridge coupler is coupled into one road signal with the two paths of signals by said the 3rd electric bridge coupler and the input of said the 4th electric bridge coupler that is received; This signal inputs to synthesizer through said second filter filtering, the amplification of said the 3rd low noise amplifier, said the 4th filter filtering, said the 4th low noise amplifier after amplifying successively, and is by said synthesizer that the two paths of signals of said second low noise amplifier and the input of said the 4th low noise amplifier is synthetic after the 5th low noise amplifier is input to the radiofrequency signal receiving device after amplifying.
In the such scheme; The geometric center place of said upper strata microstrip antenna is provided with the upper strata centre bore; The geometric center place of said lower floor microstrip antenna is provided with lower floor's centre bore; Said antenna also is provided with the feed-in probe; This feed-in probe is connected with the electric bridge of said feeding network printed circuit board (PCB) after said upper strata central hole penetrates said upper strata microstrip antenna and penetrates said lower floor microstrip antenna from said lower floor central hole successively, and said feed-in probe is realized being connected of electric property with said upper strata microstrip antenna and the said lower floor microstrip antenna mode through the physics welding respectively.
In the such scheme, said upper strata microstrip antenna is provided with four upper stratas feedback points of arranging on the circumference of circle that five equilibrium is radius with 8mm, and the center of circle of the circle of four said upper strata feedback points overlaps with the center of circle of said upper strata centre bore; Said lower floor microstrip antenna be provided with four lower floors' feedback points of arranging on the circumference of circle that five equilibrium is radius with 15mm with four with the corresponding via hole of said upper strata feedback point, and the center of circle of the circle of four said lower floors feedback overlaps with the center of circle of said lower floor centre bore.
In the such scheme; Said antenna also is provided with four first coaxial probes and four second coaxial probes; The feedback point penetrates said upper strata microstrip antenna and after said via hole penetrates said lower floor microstrip antenna, is electrically connected with said feeding network printed circuit board (PCB) said first coaxial probe from said upper strata, and said second coaxial probe is electrically connected with said feeding network printed circuit board (PCB) after said lower floor feedback point penetrates said lower floor microstrip antenna; Said feeding network printed circuit board (PCB) is given upper strata microstrip antenna feed through four said first coaxial probes, gives lower floor's microstrip antenna feed through four said second coaxial probes.
In the such scheme, said in order better to guarantee the phase center and the anti-multipath effect of antenna, except above-described four separately vertical feed pin feeds to feeding network; Carry out ground connection connection through penetrating microstrip antenna centre bore to bottom feeding network simultaneously after drawing four coaxial probe bendings aloft respectively from four upper strata feedback points.
In the such scheme, the edge, four limits of said upper strata microstrip antenna and said lower floor microstrip antenna is respectively arranged with the line apart from shape Great Wall.
In the such scheme, said upper strata microstrip antenna and said lower floor microstrip antenna are regular polygon microstrip antenna.
In the such scheme, be furnished with the impedance line that impedance is 50 Ω in the said feeding network printed circuit board (PCB).
Many stars multifrequency Microstrip Receiving Antenna of the present invention; As can contain GPS L1/L2/L5, GLONASS L1/L2, GALILEO E1 and many stars of multifrequency wide frequency antenna of Big Dipper L/B1/B2/B3, can be widely used in the earth mapping, Ocean Surveying, water course survey, dredge and complete occasions such as measurement, seismic monitoring, bridge deformation monitoring, landslide monitoring, dock container operation.It compared with prior art has the following advantages:
1. antenna part adopts and how present a little design, and through two-layer eight set complete symmetrical antenna feed point up and down, the realization phase center overlaps with geometric center, and antenna is reduced to minimum to influence of measurement error;
2. through the size that goes up microstrip antenna and following microstrip antenna in the antenna is set; And to adopt polytetrafluoroethylene be medium, thus can guarantee the antenna receive frequency can contain GPS L1/L2/L5, GLONASS L1/L2, GALILEO E1 and many stars of multifrequency wide frequency antenna of Big Dipper L/B1/B2/B3.
Description of drawings:
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 a is the general structure sketch map of the embodiment of the invention one;
Fig. 1 b is the general structure sketch map of the embodiment of the invention two;
Fig. 2 is the upper strata microstrip antenna structure sketch map of the embodiment of the invention;
Fig. 3 is lower floor's microstrip antenna structure sketch map of the embodiment of the invention;
Fig. 4 is the schematic block circuit diagram of the feeding network printed circuit board (PCB) of the embodiment of the invention.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1 a, Fig. 1 b, Fig. 2 and Fig. 3; Reception antenna of the present invention, whole physical structure comprises the upper strata paster 10 with upper strata microstrip antenna 11, the lower floor's paster 20 with lower floor's microstrip antenna 21 and the feeding network printed circuit board (PCB) 30 that places bottom.
Wherein, The upper strata microstrip antenna adopt dielectric constant be 2.62 ± 0.2 polytetrafluoroethylene be medium to be of a size of long 75mm, wide 75mm, thickness be the polygon antenna of 4mm, it is that 2.62 ± 0.2 polytetrafluoroethylene is that to be of a size of long 90mm, wide 90mm, thickness be the polygon antenna of 4mm to medium that lower floor's microstrip antenna adopts dielectric constant equally.Can reach the demand of high accuracy, high stable like this.
Owing to the PTFE medium material that with dielectric constant is 2.62 ± 0.2 just can reach broadband; Thereby cover fully GPS L1/L2/L5, GLONASS L1/L2, GALILEO E1 and the Big Dipper two generations B1/B2/B3; The electrical property needs of high precision high stability positioning system antenna have been satisfied simultaneously again; In conjunction with in the time more than a year through our many-sided research GPS L1/L2/L5, GLONASS L1/L2, GALILEO E1 and the dielectric material of the levels microstrip antenna of the B1/B2/B3 multisystem multiband in two generations of the Big Dipper; Discovery have only employing with above-mentioned size (like the size (mm) that Fig. 2 and Fig. 3 were marked) be that the mode that plates regular metal (like copper facing, gold-plated) above 2.62 ± 0.2 the polytetrafluoroethylene could realize with dielectric constant, thereby and the levels microstrip antenna is combined to have realized high-level multisystem multiband microstrip antenna effect cleverly through the engineering staff.
In addition; The geometric center place of said upper strata microstrip antenna 11 is provided with upper strata centre bore 111; The geometric center place of said lower floor microstrip antenna 21 is provided with lower floor's centre bore 211; Said double-frequency micro-strip antenna also is provided with feed-in probe 40; This feed-in probe 40 is connected with the electric bridge of said feeding network printed circuit board (PCB) 30 after centre bore 111 penetrates said upper strata microstrip antenna 10 and penetrates said lower floor microstrip antenna 20 from said lower floor centre bore 211 from said upper strata successively, and said feed-in probe 40 is electrically connected with said upper strata microstrip antenna 11 and said lower floor microstrip antenna 21 respectively.
Referring to Fig. 1 a, upper strata microstrip antenna 10 comprises top dielectric plate 12, and it simultaneously encloses thin metal layer as upper strata ground plate 13, and another side sticks laminating sheet 11.Lower floor's microstrip antenna 20 comprises layer dielectric plate 22, and it simultaneously encloses thin metal layer as lower floor's ground plate 23, and another side pastes lower floor's paster 21.Top dielectric plate 12, upper strata ground plate 13, layer dielectric plate 22 and lower floor's ground plate 23 are respectively arranged with corresponding via hole, supply feed-in probe 40 to wear.It is to be noted; Upper strata microstrip antenna 11 can receive the signal of L1 frequency range, GLONASS L1 frequency range and the Big Dipper two generations B1 frequency range, Big Dipper generation L frequency range and GALILEOE1/E2/L1 frequency range from GPS, and lower floor's microstrip antenna 21 receives L2 frequency range, GALILEO E5B/E6, the Big Dipper two generations B2 of L2/L5 frequency range from GPS, GLONASS, the signal of B3.
The geometric center of upper strata microstrip antenna 11 and the geometric center of lower floor's microstrip antenna 21 are fixed together through feed-in probe 40 for entire antenna, and upper strata microstrip antenna 11 are connected with feeding network printed circuit board (PCB) 30 with lower floor microstrip antenna 21 through feed-in probe 40.Can the electric phase center of upper strata microstrip antenna 11 and lower floor's microstrip antenna 21 be overlapped in the geometric center of every laminating sheet with when the electric phase center of this layer overlaps.So; Many stars multifrequency Microstrip Receiving Antenna of the present invention can be avoided moving of antenna phase center; Stablize the phase center of two frequency band signals of multifrequency microstrip antenna reception, thereby can reduce the signal errors of multifrequency microstrip antenna, improve the precision that the multifrequency microstrip antenna signal receives.
Certainly, it is the upper strata feedback point 112 of arranging on the circumference of circle of radius with 8mm that upper strata microstrip antenna 11 is provided with five equilibrium, and the geometric center of four said upper strata feedback points 112 overlaps with said upper strata centre bore 111; It is 212 and four of lower floor's feedback points of arranging on the circumference of circle of radius and said upper strata feedback 112 a corresponding via hole 221 with 15mm that said lower floor microstrip antenna 21 is provided with five equilibrium; And the geometric center of four said lower floor feedback points 212 overlaps with said lower floor centre bore 211, and microstrip antenna adopts the feedback point of this radius distribution can guarantee that deviation does not take place the phase center that receives signal up and down.Said multifrequency microstrip antenna also is provided with four first coaxial probes 113 and four second coaxial probes 213; Feedback point 112 penetrates said upper strata microstrip antenna 10 and penetrates said lower floor microstrip antenna 20 backs from said via hole 221 and is electrically connected with said feeding network printed circuit board (PCB) 30 said first coaxial probe 113 from said upper strata, and said second coaxial probe 213 is electrically connected with said feeding network printed circuit board (PCB) 30 after said lower floor feedback 212 penetrates said lower floor microstrip antenna 20; Said feeding network printed circuit board (PCB) 30 is given upper strata microstrip antenna 11 feeds through four said first coaxial probes 113, gives lower floor's microstrip antenna 21 feeds through four said second coaxial probes 213.
Referring to Fig. 1 b, in order better to guarantee the phase center and the anti-multipath effect of antenna, except above-described four separately vertical feed pin feeds to feeding network; Carry out ground connection connection through penetrating microstrip antenna centre bore to bottom feeding network simultaneously after drawing four coaxial probe 114 bendings aloft respectively from four upper strata feedback points.
As shown in Figures 2 and 3, upper strata feedback point 112 is respectively upper strata feedback point a, upper strata feedback point b, upper strata feedback point c, upper strata feedback point d; Lower floor's feedback point 212 is respectively the feedback point e of lower floor, the feedback point f of lower floor, the feedback point g of lower floor, the feedback point h of lower floor.
Antenna of the present invention adopts every layer of four distributing point, and eight coaxial probes are respectively to upper strata microstrip antenna 11 and lower floor's microstrip antenna 21 feeds.Since multifrequency microstrip antenna the satellite-signal that will receive be the right-handed circular polarization electric wave; Therefore can confirm the position of eight feedback points through the Electromagnetic Simulation technology; Thereby the signal that every adjacent two upper stratas feedback point 112 is received differs 90 degree; The signal that every adjacent two lower floors feedback point 212 receives differs 90 degree, make each feedback point scattering parameter S 11＜-20dB, axial ratio AR＜3dB angular range is about 120 °.It is 50 Ω that an adjusting feedback point position can make the input impedance of antenna, thereby omits the match circuit between low noise amplifier and the microstrip antenna.
Therefore; Every laminating sheet is carried out four even feeds; And making every adjacent feedback point signal phase difference is 90 degree; Can make microstrip antenna realize the symmetry of antenna pattern more easily, make axial ratio adopt the axial ratio of single-point feedback or 2 feeds good, can be easy to receive the circular polarization electric wave of satellite in wider angle than prior art.
Four even feeds of every layer of microstrip antenna of antenna of the present invention; Or two feedback points single with the general employing of prior art are compared; Can make the phase center of double-frequency micro-strip antenna more stable; Make it can large-sized deviation not take place, thereby can further improve the certainty of measurement of double-frequency micro-strip antenna with moving of satellite or double-frequency micro-strip antenna.
The close coupling that forms between the feed-in probe 40 and first coaxial probe 113 is equivalent to and has loaded an electric capacity; Make upper strata microstrip antenna 10 be lower than the impedance matching that the resonance frequency position reaches upper strata microstrip antenna 10; Thereby increased the frequency bandwidth of upper strata microstrip antenna 10; Thereby guarantee that the frequency bandwidth of upper strata microstrip antenna 10 can cover the frequency bandwidth of L1 frequency range; Thereby can contain the influence of multipath effect, and then improve the reliability and the precision of the reception signal of upper strata microstrip antenna 10 double-frequency micro-strip antenna of the present invention.In like manner; The close coupling that forms between the feed-in probe 40 and second coaxial probe 213 is equivalent to and has loaded an electric capacity; Make lower floor's microstrip antenna 20 be lower than the impedance matching that the resonance frequency position reaches lower floor's microstrip antenna 20; Thereby increased the frequency bandwidth of lower floor's microstrip antenna 20; Thereby guarantee that the frequency bandwidth of lower floor's microstrip antenna 20 can cover the frequency bandwidth of L2 frequency range, thereby can contain the influence of multipath effect, and then improve the reliability and the precision of the reception signal of lower floor's microstrip antenna 20 antenna of the present invention.
In addition, top dielectric plate 12, upper strata ground plate 13, layer dielectric plate 22 and lower floor's ground plate 23 are respectively arranged with corresponding via hole, supply first coaxial probe 113 to wear.Layer dielectric plate 22 is respectively arranged with corresponding via hole with lower floor's ground plate 23 and supplies second coaxial probe 213 to wear.
Referring to Fig. 2 and Fig. 3, upper strata microstrip antenna 11 is square paster with said lower floor microstrip antenna 21 usually.The square paster can realize more easily that paster designs symmetrically, and square processing and manufacturing more easily.Can certainly adopt other symmetrical structures of prior art, similar round as shown in Figure 3 or the like.
Referring to Fig. 3, four jiaos of lower floor's microstrip antenna 21 have corner cut 24.Four jiaos of symmetry corner cuts 24 can guarantee the symmetry of lower floor's microstrip antenna 21 structures.To 11 4 jiaos of corner cuts 24 of upper strata microstrip antenna, help the assembling of double-frequency micro-strip antenna.And corner cut 24 can play the effect that degenerate mode separates.Promptly make square microstrip antenna increase a degenerate mode separative element, make the resonance frequency of degenerate mode produce separation, operating frequency is between two resonance frequencys.When the degenerate mode separative element is selected when suitable, as far as operating frequency, the equiva lent impedance phase angular advance of a mould, and the equiva lent impedance phase angular lag of another mould when differing 90 when spending between them, have just formed circular polarization.Certainly, corner cut 24 is an isosceles right triangle.Isosceles right triangle is realized the symmetrical structure of lower floor's microstrip antenna 21 more easily, and helps making and processing.
Referring to Fig. 2 and Fig. 3, the edge, four limits of said upper strata microstrip antenna 11 and said lower floor microstrip antenna 21 is respectively arranged with Great Wall line 15 and Great Wall line 25.Particularly, Great Wall line 15 can be rectangular flange with Great Wall line 25, and Great Wall line 15 and Great Wall line 25 can also adopt other shape of prior art certainly, and the number of Great Wall line 15 and Great Wall line 25 can be confirmed according to actual conditions.
Referring to the label among Fig. 2 and Fig. 3 34 is the fixing screw hole of upper strata microstrip antenna, lower floor's microstrip antenna and hardboard PCB.
Because the reception signal of microstrip antenna is to realize through the edge of paster and the coupling between the ground plate; Therefore; The edge, four limits of microstrip antenna 11 and said lower floor microstrip antenna 21 is provided with Great Wall line 15 and Great Wall line 25 respectively on said upper strata; Can increase the path of patch edges; Make the electric current labyrinth lengthening flow through upper strata microstrip antenna 11 and lower floor's microstrip antenna 21, thus can be in the size that satisfy reduction double-frequency micro-strip antenna under the condition of receiving satellite signal, and the impedance that can regulate antenna better make double-frequency micro-strip antenna more be prone to the coupling receiving satellite signal.
Referring to Fig. 4; Feeding network printed circuit board (PCB) 30 comprises the first electric bridge coupler, the second electric bridge coupler, the 3rd electric bridge coupler, the 4th electric bridge coupler, the 5th electric bridge coupler, the 6th electric bridge coupler (above-mentioned 6 electric bridge couplers can be the 3dB electric bridge), and first filter, second filter, the 3rd filter, the 4th filter, first low noise amplifier, second low noise amplifier, the 3rd low noise amplifier, the 4th low noise amplifier, the 5th noise amplifier and synthesizer; Wherein two adjacent said upper stratas are presented the signal of putting a and upper strata feedback point b and after the said first electric bridge coupler is coupled into one road signal, are inputed to the 5th electric bridge coupler; The signal that some c and upper strata feedback point d are presented in other two adjacent said upper stratas inputs to the 5th electric bridge coupler after the said second electric bridge coupler is coupled into one road signal; Wherein two adjacent said lower floors present the signal of putting e and the feedback point f of lower floor and after said the 3rd electric bridge coupler is coupled into one road signal, input to the 6th electric bridge coupler; The signal that other two adjacent said lower floors present some g and the feedback point h of lower floor inputs to the 6th electric bridge coupler after the said second electric bridge coupler is coupled into one road signal.Through foregoing circuit, respectively four upper strata feedback point signals and four lower floor's feedback point signals are coupled into the output of one road signal like this.
Said the 5th electric bridge coupler is coupled into one road signal with the two paths of signals by said first electric bridge coupler and the input of the said second electric bridge coupler that is received, and this signal inputs to synthesizer through said first filter filtering, the amplification of said first low noise amplifier, said the 3rd filter filtering, said second low noise amplifier after amplifying successively; Said the 6th electric bridge coupler is coupled into one road signal with the two paths of signals by said the 3rd electric bridge coupler and the input of said the 4th electric bridge coupler that is received; This signal inputs to synthesizer through said second filter filtering, the amplification of said the 3rd low noise amplifier, said the 4th filter filtering, said the 4th low noise amplifier after amplifying successively, and is by said synthesizer that the two paths of signals of said second low noise amplifier and the input of said the 4th low noise amplifier is synthetic after the 5th low noise amplifier is input to the radiofrequency signal receiving device after amplifying.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.
Claims (8)
1. based on the broadband satellite fix Microstrip Receiving Antenna of multiband multisystem, comprise upper strata microstrip antenna, lower floor's microstrip antenna and place the feeding network printed circuit board (PCB) of bottom; It is characterized in that,
It is 4mm's that said upper strata microstrip antenna adopts long 75mm, wide 75mm, thickness; With dielectric constant is that 2.62 ± 0.2 polytetrafluoroethylene is the polygon antenna of medium; It is 4mm's that said lower floor microstrip antenna adopts long 90mm, wide 90mm, thickness; With dielectric constant is that 2.62 ± 0.2 polytetrafluoroethylene is the polygon antenna of medium, and said upper strata microstrip antenna is connected with the feeding network printed circuit board (PCB) through many modes with the feedback pin with the lower floor microstrip antenna;
The said feeding network of stating on the printed circuit board (PCB) comprises the first electric bridge coupler, the second electric bridge coupler, the 3rd electric bridge coupler, the 4th electric bridge coupler, the 5th electric bridge coupler, the 6th electric bridge coupler, first filter, second filter, the 3rd filter, the 4th filter, first low noise amplifier, second low noise amplifier, the 3rd low noise amplifier, the 4th low noise amplifier, the 5th noise amplifier and synthesizer; Wherein the signal of the feedback point of two adjacent said upper strata microstrip antennas inputs to the 5th electric bridge coupler after the said first electric bridge coupler is coupled into one road signal; The signal of the feedback point of two adjacent said upper strata microstrip antennas inputs to the 5th electric bridge coupler after the said second electric bridge coupler is coupled into one road signal in addition; Wherein the signal of the feedback point of two adjacent said lower floor microstrip antennas inputs to the 6th electric bridge coupler after said the 3rd electric bridge coupler is coupled into one road signal; The signal of the feedback point of two adjacent said lower floor microstrip antennas inputs to the 6th electric bridge coupler after said the 4th electric bridge coupler is coupled into one road signal in addition;
Said the 5th electric bridge coupler is coupled into one road signal with the two paths of signals by said first electric bridge coupler and the input of the said second electric bridge coupler that is received, and this signal inputs to synthesizer through said first filter filtering, the amplification of said first low noise amplifier, said the 3rd filter filtering, said second low noise amplifier after amplifying successively; Said the 6th electric bridge coupler is coupled into one road signal with the two paths of signals by said the 3rd electric bridge coupler and the input of said the 4th electric bridge coupler that is received; This signal inputs to synthesizer through said second filter filtering, the amplification of said the 3rd low noise amplifier, said the 4th filter filtering, said the 4th low noise amplifier after amplifying successively, and is by said synthesizer that the two paths of signals of said second low noise amplifier and the input of said the 4th low noise amplifier is synthetic after the 5th low noise amplifier is input to the radiofrequency signal receiving device after amplifying.
2. according to the reception antenna of claim 1; It is characterized in that; The geometric center place of said upper strata microstrip antenna is provided with the upper strata centre bore; The geometric center place of said lower floor microstrip antenna is provided with lower floor's centre bore; Said double-frequency micro-strip antenna also is provided with the feed-in probe, and this feed-in probe is connected with the electric bridge of said feeding network printed circuit board (PCB) after said upper strata central hole penetrates said upper strata microstrip antenna and penetrates said lower floor microstrip antenna from said lower floor central hole successively, and said feed-in probe is realized being connected of electric property with said upper strata microstrip antenna and the said lower floor microstrip antenna mode through the physics welding respectively.
3. according to the reception antenna of claim 2; It is characterized in that; Said upper strata microstrip antenna is provided with four upper stratas feedback points of arranging on the circumference of circle that five equilibrium is radius with 8mm, and the center of circle of the circle of four said upper strata feedback points overlaps with the center of circle of said upper strata centre bore; Said lower floor microstrip antenna be provided with four lower floors' feedback points of arranging on the circumference of circle that five equilibrium is radius with 15mm with four with the corresponding via hole of said upper strata feedback point, and the center of circle of the circle of four said lower floors feedback overlaps with the center of circle of said lower floor centre bore.
4. according to the reception antenna of claim 3; It is characterized in that; Said antenna also is provided with four first coaxial probes and four second coaxial probes; The feedback point penetrates said upper strata microstrip antenna and after said via hole penetrates said lower floor microstrip antenna, is electrically connected with said feeding network printed circuit board (PCB) said first coaxial probe from said upper strata, and said second coaxial probe is electrically connected with said feeding network printed circuit board (PCB) after said lower floor feedback point penetrates said lower floor microstrip antenna; Said feeding network printed circuit board (PCB) is given upper strata microstrip antenna feed through four said first coaxial probes, gives lower floor's microstrip antenna feed through four said second coaxial probes.
5. according to the reception antenna of claim 3, it is characterized in that the edge, four limits of said upper strata microstrip antenna and said lower floor microstrip antenna is respectively arranged with the line apart from shape Great Wall.
6. according to the reception antenna of claim 4, it is characterized in that said upper strata microstrip antenna and said lower floor microstrip antenna are regular polygon microstrip antenna.
7. according to the reception antenna of claim 5, it is characterized in that said four upper stratas feedback point is drawn respectively and penetrated microstrip antenna centre bore to bottom feeding network simultaneously after four coaxial probe bendings aloft and carry out ground connection connection.
8. according to the reception antenna of claim 4, it is characterized in that, be furnished with the impedance line that impedance is 50 Ω in the said feeding network printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103932644A CN102496783A (en) | 2011-06-21 | 2011-12-02 | Wideband satellite positioning micro-band receiving antenna based on multiband and multisystem |
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| CN2011103932644A CN102496783A (en) | 2011-06-21 | 2011-12-02 | Wideband satellite positioning micro-band receiving antenna based on multiband and multisystem |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738575A (en) * | 2012-06-28 | 2012-10-17 | 上海海积信息科技有限公司 | Ultra-wideband four-arm spiral antenna and signal processing method |
| CN106848589A (en) * | 2017-01-10 | 2017-06-13 | 赵翔 | A kind of full range measurement type GNSS antenna |
| CN107946757A (en) * | 2017-11-14 | 2018-04-20 | 西安天通电子科技有限公司 | Broadband high stability phase center anti-multipath antenna |
| CN107966720A (en) * | 2017-12-27 | 2018-04-27 | 深圳华大北斗科技有限公司 | Satellite signal receiver and global position system |
| CN109638431A (en) * | 2019-01-29 | 2019-04-16 | 深圳市集众思创科技有限公司 | Multifunctional combination antenna |
| EP3671956A1 (en) * | 2015-03-02 | 2020-06-24 | Trimble Inc. | Dual-frequency patch antennas |
| CN113917494A (en) * | 2021-12-10 | 2022-01-11 | 河北晶禾电子技术股份有限公司 | Automatic gain control's big dipper antenna |
| RU2788433C1 (en) * | 2022-08-16 | 2023-01-19 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" | Multi-band compact microstrip antenna |
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| CN101916901A (en) * | 2010-08-05 | 2010-12-15 | 广州市中海达测绘仪器有限公司 | Double-frequency microstrip antenna |
| CN201797041U (en) * | 2010-08-05 | 2011-04-13 | 广州中海达卫星导航技术股份有限公司 | Measurement type double-frequency microstrip antenna |
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| CN101916901A (en) * | 2010-08-05 | 2010-12-15 | 广州市中海达测绘仪器有限公司 | Double-frequency microstrip antenna |
| CN201797041U (en) * | 2010-08-05 | 2011-04-13 | 广州中海达卫星导航技术股份有限公司 | Measurement type double-frequency microstrip antenna |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738575A (en) * | 2012-06-28 | 2012-10-17 | 上海海积信息科技有限公司 | Ultra-wideband four-arm spiral antenna and signal processing method |
| CN102738575B (en) * | 2012-06-28 | 2016-10-19 | 上海海积信息科技股份有限公司 | A kind of ultra-wideband four-arm spiral antenna and signal processing method |
| EP3671956A1 (en) * | 2015-03-02 | 2020-06-24 | Trimble Inc. | Dual-frequency patch antennas |
| CN106848589A (en) * | 2017-01-10 | 2017-06-13 | 赵翔 | A kind of full range measurement type GNSS antenna |
| CN107946757A (en) * | 2017-11-14 | 2018-04-20 | 西安天通电子科技有限公司 | Broadband high stability phase center anti-multipath antenna |
| CN107966720A (en) * | 2017-12-27 | 2018-04-27 | 深圳华大北斗科技有限公司 | Satellite signal receiver and global position system |
| CN107966720B (en) * | 2017-12-27 | 2024-02-20 | 深圳华大北斗科技股份有限公司 | Satellite signal receiver and satellite positioning system |
| CN109638431A (en) * | 2019-01-29 | 2019-04-16 | 深圳市集众思创科技有限公司 | Multifunctional combination antenna |
| CN113917494A (en) * | 2021-12-10 | 2022-01-11 | 河北晶禾电子技术股份有限公司 | Automatic gain control's big dipper antenna |
| RU2788433C1 (en) * | 2022-08-16 | 2023-01-19 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" | Multi-band compact microstrip antenna |
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Application publication date: 20120613 |