CN209766635U - Planar equiangular spiral circularly polarized antenna - Google Patents
Planar equiangular spiral circularly polarized antenna Download PDFInfo
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- CN209766635U CN209766635U CN201920562979.XU CN201920562979U CN209766635U CN 209766635 U CN209766635 U CN 209766635U CN 201920562979 U CN201920562979 U CN 201920562979U CN 209766635 U CN209766635 U CN 209766635U
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Abstract
The utility model discloses an equiangular spiral circular polarized antenna of plane, include: the planar equiangular spiral oscillator, the oscillator feed board, the circularly polarized radiation baffle and the unidirectional radiation baffle; the circularly polarized radiation baffle is a cylindrical tube and is fixed on the upper surface of the unidirectional radiation baffle, the circularly polarized radiation baffle surrounds the planar equiangular spiral vibrator and the vibrator feed board in the middle, the upper end of the vibrator feed board is fixed with the planar equiangular spiral vibrator, and the lower end of the vibrator feed board is fixed with the unidirectional radiation baffle. The antenna has the characteristics of wide impedance, wide axial ratio, wide lobe and high gain, provides requirements for multi-band operation for high-precision navigation, positioning, time service and the like, can be applied to the satellite communication equipment, and meets the requirements for complex environment communication; in addition, the antenna unit adopts the printed board design, has simple structure and low cost, is beneficial to mass production, and provides cost advantage guarantee for the popularization of products.
Description
Technical Field
The utility model relates to a satellite communication technical field, concretely relates to planar equiangular spiral circular polarized antenna.
Background
With the development of information technology and the more and more wide application of satellite navigation services, and with the gradual maturity of unmanned technology, high-precision navigation services will have a great application market, and the application requirements of traditional precision positioning and mapping positioning in the fields of bridge construction, road construction, civil aviation, time service and the like are more and more. The current satellite navigation application frequency band is 1207 MHz-1278 MHz/1559 MHz-1605 MHz. In addition, the existing satellite communication of the heaven-earth satellite comprises a mobile handheld terminal, a shipborne satellite communication terminal and a vehicle-mounted satellite communication terminal, wherein the China has a wide coastline and developed fishery, while the maritime communication mainly depends on the satellite communication, and the satellite communication service is continuously increased along with the application of the heaven-earth satellite; besides marine communication, satellite communication is indispensable in forestry, desert, border, rescue and relief work. The main application frequency band of the satellite communication is 1980 MHz-2200 MHz, and the main services are high-precision navigation, measurement, position measurement, speed measurement, satellite communication, internet phase data transmission and the like. The main application terminals comprise a satellite navigation instrument, time service equipment, a satellite call handset, a mobile terminal, a fixed terminal and the like. With the continuous progress of intelligent communication, satellite communication needs to meet not only basic call service requirements but also various network services of internet communication.
However, in the prior art, GPS (L1/L2/L5), BDS (B1/B2/B3), GLONASS (L1/L2), and GALILEO (E1/E2/E5a/E5B) have a large navigation band coverage, which makes it difficult to design a full-band navigation antenna, and at the same time, makes it difficult to design a wide-lobe and wide-axis ratio of the communication quality of the satellite in the sky.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above prior art existence, provide a plane equiangular spiral circular polarized antenna.
The purpose of the utility model is realized through the following technical scheme:
A planar equiangular helical circularly polarized antenna comprising: the antenna comprises a planar equiangular spiral oscillator 01, an oscillator feed board 02, a circularly polarized radiation baffle 03 and a single-directional radiation baffle 04; the circularly polarized radiation baffle 03 is a cylindrical tube and is fixed on the upper surface of the unidirectional radiation baffle 04, the circularly polarized radiation baffle 03 surrounds the planar equiangular spiral vibrator 01 and the vibrator feed board 02 in the middle, the upper end of the vibrator feed board 02 is fixed with the planar equiangular spiral vibrator 01, and the lower end of the vibrator feed board 02 is fixed with the unidirectional radiation baffle 04.
Preferably, 2 equiangular spiral copper-clad vibrators 06 are symmetrically arranged on the planar equiangular spiral vibrator 01, and the tail end of each equiangular spiral copper-clad vibrator 06 is in a sharp knife shape; a rectangular feed hole 07 is formed in the middle of the planar equiangular spiral vibrator 01, and the rectangular feed hole 07 is located in the head end area of the equiangular spiral copper-clad vibrator (06).
Preferably, a raised ground pad 09 for welding with the planar equiangular spiral vibrator 01 is arranged at the upper end of the vibrator feed board 02, a reflector connection bayonet 22 is arranged at the lower end of the vibrator feed board 02, the raised ground pad 09 penetrates through the rectangular feed hole 07 and is welded with the planar equiangular spiral vibrator 01, a feed stub 12, an impedance transformation line 11 and a microstrip transmission line 13 which are connected with each other are sequentially arranged on the front surface of the vibrator feed board 02 from top to bottom, a transmission line ground pad 14 is further arranged below the microstrip transmission line 13, a hole-shaped direct current ground feed probe 10 is further arranged on the vibrator feed board 02, and the direct current ground feed probe 10 is located at one end of the feed stub 12; the other end of the feed stub 12 is vertically connected with the impedance conversion line 11, a balun slot 16 is arranged in the middle of the rear surface of the oscillator feed plate 02, and the area of the rear surface of the oscillator feed plate 02 except the balun slot 16 is coated with a grounding copper sheet 15.
Preferably, the circularly polarized radiation baffle 03 is provided with a grounding pin 17, and the circularly polarized radiation baffle 03 is clamped on the unidirectional radiation baffle 04 through the grounding pin 17.
Preferably, the upper surface of the unidirectional radiation baffle 04 is provided with a circular copper sheet reflection patch 18, the edge of the circular copper sheet reflection patch 18 is provided with a protrusion, the protrusion and the unidirectional radiation baffle 04 are provided with square metalized via holes 19 at corresponding positions, the ground pin 17 of the circular polarization radiation baffle 03 is clamped in the square metalized via holes 19, the middle of the unidirectional radiation baffle 04 is provided with an outlet hole 20, a feed board clamping rectangular hole 23 and a reflection board grounding pad 24, and the reflection board connecting bayonet 22 of the oscillator feed board 02 is clamped in the feed board clamping rectangular hole 23 and welded on the unidirectional radiation baffle 04 through the reflection board grounding pad 24.
Preferably, a circular stud mounting hole 08 is formed in the planar equiangular spiral vibrator 01, a stud fixing hole 21 is formed in the unidirectional radiation baffle 04, and a fixing stud screw 05 penetrates through the circular stud mounting hole 08 and the stud fixing hole 21 in sequence.
Preferably, the number of the circular stud mounting holes 08, the number of the stud fixing holes 21 and the number of the fixing stud screws 05 are all 4.
Preferably, the bump ground pads 09 are square and 2 in number.
The utility model discloses for prior art have following advantage:
The antenna has the advantages that the design is reasonable and novel, the broadband planar equiangular spiral oscillator is adopted, the oscillator feed board with the broadband balun slot is adopted, and the circularly polarized radiation baffle and the unidirectional radiation baffle are combined, so that the antenna has the characteristics of wide impedance, wide axial ratio, wide lobes and high gain, the requirement of multi-band operation is provided for high-precision navigation, positioning, time service and the like, meanwhile, the antenna can be applied to space satellite communication equipment, and the requirement of complex environment communication use is met; in addition, the antenna unit adopts the printed board design, has simple structure and low cost, is beneficial to mass production, and provides cost advantage guarantee for the popularization of products.
Drawings
Fig. 1 is a structural diagram of the planar equiangular helical circular polarized antenna of the present invention.
Fig. 2 is a vertical cross-sectional view of the planar equiangular helical circular polarized antenna of the present invention.
Fig. 3 is a plan view of the planar equiangular spiral vibrator of the present invention.
Fig. 4 is a front view of the oscillator feed board of the present invention.
Fig. 5 is a rear view of the vibrator feeding board of the present invention.
Fig. 6 is a structural diagram of the circularly polarized radiation shield of the present invention.
Fig. 7 is a top view of a uni-directional radiation shield of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1 to 7, a planar equiangular helical circularly polarized antenna includes: the antenna comprises a planar equiangular spiral oscillator 01, an oscillator feed board 02, a circularly polarized radiation baffle 03 and a single-directional radiation baffle 04; the circularly polarized radiation baffle 03 is a cylindrical tube and is fixed on the upper surface of the unidirectional radiation baffle 04, the circularly polarized radiation baffle 03 surrounds the planar equiangular spiral vibrator 01 and the vibrator feed board 02 in the middle, the upper end of the vibrator feed board 02 is fixed with the planar equiangular spiral vibrator 01, and the lower end of the vibrator feed board 02 is fixed with the unidirectional radiation baffle 04.
In this embodiment, a circular stud mounting hole 08 is formed in the planar equiangular spiral vibrator 01, a stud fixing hole 21 is formed in the unidirectional radiation baffle 04, and a fixing stud screw 05 sequentially penetrates through the circular stud mounting hole 08 and the stud fixing hole 21. The number of the round stud mounting holes 08, the number of the stud fixing holes 21 and the number of the fixing stud screws 05 are 4. Therefore, the planar equiangular spiral circular polarization antenna is formed by reasonably combining the planar equiangular spiral oscillator 01, the oscillator feed plate 02, the circular polarization radiation baffle 03 and the directional radiation plate 04.
In this embodiment, 2 equiangular spiral copper-clad vibrators 06 are symmetrically arranged on the planar equiangular spiral vibrator 01, and the tail end of each equiangular spiral copper-clad vibrator 06 is in a sharp-knife shape; a rectangular feed hole 07 is formed in the middle of the planar equiangular spiral vibrator 01, and the rectangular feed hole 07 is located in the head end area of the equiangular spiral copper-clad vibrator (06).
In this embodiment, a raised ground pad 09 for welding with a planar equiangular spiral vibrator 01 is disposed at an upper end of the vibrator feeding board 02, a reflection board connection bayonet 22 is disposed at a lower end of the vibrator feeding board 02, the raised ground pad 09 passes through a rectangular feeding hole 07 and is welded with the planar equiangular spiral vibrator 01, a feeding stub 12, an impedance transformation line 11 and a microstrip transmission line 13 which are connected with each other are sequentially disposed on a front surface of the vibrator feeding board 02 from top to bottom, a transmission line ground pad 14 is further disposed below the microstrip transmission line 13, a hole-shaped dc ground feeding probe 10 is further disposed on the vibrator feeding board 02, and the dc ground feeding probe 10 is located at one end of the feeding stub 12; the other end of the feed stub 12 is vertically connected with the impedance conversion line 11, a balun slot 16 is arranged in the middle of the rear surface of the oscillator feed plate 02, and the area of the rear surface of the oscillator feed plate 02 except the balun slot 16 is coated with a grounding copper sheet 15.
The direct-current ground feed probe 10 is a metalized through hole and is communicated with a feed stub 12 on the front surface of the oscillator feed board 02 and a ground copper sheet 15 of the oscillator feed board 02. The bump ground pads 09 are square and 2 in number. The feed stub 12 acts as a dc ground feed probe 10 to feed the equiangular helical copper-clad dipole 06 and has a 150 ohm input or output impedance.
In this embodiment, the circularly polarized radiation shield 03 is provided with a grounding pin 17, and the circularly polarized radiation shield 03 is clamped on the unidirectional radiation shield 04 through the grounding pin 17. The number of the ground pins 17 is 4.
In this embodiment, the upper surface of the unidirectional radiation baffle 04 is provided with a circular copper sheet reflection patch 18, the edge of the circular copper sheet reflection patch 18 is provided with a protrusion, the protrusion and the unidirectional radiation baffle 04 are provided with a square metalized via hole 19 at corresponding positions, the ground pin 17 of the circular polarization radiation baffle 03 is clamped in the square metalized via hole 19, the middle of the unidirectional radiation baffle 04 is provided with a wire outlet hole 20, a feed board clamping rectangular hole 23 and a reflection board grounding pad 24, the reflection board connecting bayonet 22 of the oscillator feed board 02 is clamped in the feed board clamping rectangular hole 23 and welded on the unidirectional radiation baffle 04 through the reflection board grounding pad 24, so that the oscillator feed board 02 can be firmly fixed on the unidirectional radiation baffle 04.
The number of the square metalized through holes 19 is 4, and the circular polarization radiation baffle 03 is welded to the unidirectional radiation baffle 04 by using soldering tin while the grounding pin 17 of the circular polarization radiation baffle 03 is clamped in the square metalized through hole 19. The counterpoise (outer conductor) at one end of the transmission line is connected to the transmission line ground pad 14, the core (inner conductor) at one end of the transmission line is connected to the end of the transmission line ground pad 14, the transmission line passes through the wire hole 20, and the other end of the transmission line is connected to the transmitter, receiver and other components.
The planar equiangular spiral vibrator 01 is provided with 2 symmetrical equiangular spiral copper-clad vibrators 06, and the tail end of each of the two vibrators is in a sharp knife shape, so that the capacitive reactance effect of a terminal can be effectively reduced, and the working bandwidth of the antenna is further improved; the oscillator feed board 02 can be directly connected with the symmetrical plane spiral oscillator 01 through 2 square convex grounding bonding pads 09 to excite the oscillator, and the direct-current grounding feed probe 10 on the oscillator feed board 02 has a direct-current grounding lightning protection effect. Since the output impedance of the planar equiangular helical vibrator 01 is 150 ohms and cannot be directly connected with a 50-ohm signal line (transmission line), the first step is converted into 50 ohms by a thin 1/4-wavelength microstrip line (impedance transformation line 11) and then is connected with a wide 50-ohm microstrip line (microstrip transmission line 13), so that the impedance transformation line 11 realizes the impedance transformation of the symmetric planar equiangular helical vibrator from 150 ohms to 50 ohms. The microstrip transmission line 13 can be directly connected with a coaxial cable (transmission line), the rectangular transmission line grounding pad 14, the grounding copper sheet 15 and the balun slot 16 realize the conversion from balance to unbalance transmission, and the reflecting plate connecting bayonet 22 is convenient for the installation and fixation of the feed plate 02; the circularly polarized radiation baffle 03 is provided with 4 grounding pins 17, the circularly polarized radiation baffle 03 is a cylindrical tube and surrounds the planar equiangular spiral oscillator 01 in the middle, so that the circular polarization axial ratio and the lobe width characteristics of the antenna can be effectively improved, and the circularly polarized radiation baffle 03 plays a key role.
The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.
Claims (8)
1. a planar equiangular helical circularly polarized antenna, comprising: the antenna comprises a planar equiangular spiral oscillator (01), an oscillator feed board (02), a circularly polarized radiation baffle (03) and a single-directional radiation baffle (04); the circularly polarized radiation baffle (03) is a cylindrical tube and is fixed on the upper surface of the unidirectional radiation baffle (04), the circularly polarized radiation baffle (03) surrounds the planar equiangular spiral vibrator (01) and the vibrator feed board (02) in the middle, the upper end of the vibrator feed board (02) is fixed with the planar equiangular spiral vibrator (01), and the lower end of the vibrator feed board (02) is fixed with the unidirectional radiation baffle (04).
2. The planar equiangular spiral circular polarization antenna according to claim 1, wherein 2 equiangular spiral copper-clad oscillators (06) are symmetrically arranged on the planar equiangular spiral oscillator (01), and the tail ends of the equiangular spiral copper-clad oscillators (06) are in a sharp knife shape; a rectangular feed hole (07) is formed in the middle of the planar equiangular spiral vibrator (01), and the rectangular feed hole (07) is located in the head end area of the equiangular spiral copper-clad vibrator (06).
3. The planar equiangular helical circularly polarized antenna according to claim 2, wherein the upper end of the element feed plate (02) is provided with a raised ground pad (09) for soldering to the planar equiangular helical element (01), the lower end of the vibrator feed board (02) is provided with a reflecting board connecting bayonet (22), a convex grounding pad (09) passes through the rectangular feed hole (07) and is welded with the planar equiangular spiral vibrator (01), the front surface of the oscillator feed board (02) is provided with a feed stub line (12), an impedance transformation line (11) and a micro-strip transmission line (13) which are connected with each other from top to bottom in sequence, a transmission line grounding pad (14) is arranged below the microstrip transmission line (13), a hole-shaped direct current ground feed probe (10) is also arranged on the oscillator feed board (02), and the direct current ground feed probe (10) is positioned at one end of the feed stub (12); the other end of the feed stub wire (12) is vertically connected with the impedance transformation wire (11), a balun gap slot (16) is formed in the middle of the rear surface of the oscillator feed plate (02), and the area, except for the balun gap slot (16), of the rear surface of the oscillator feed plate (02) is coated with a grounding copper sheet (15).
4. The planar equiangular helical circularly polarized antenna according to claim 1, wherein the circularly polarized radiation shield (03) is provided with a grounding pin (17), and the circularly polarized radiation shield (03) is clamped to the unidirectional radiation shield (04) by the grounding pin (17).
5. The planar equiangular helical circularly polarized antenna according to claim 4, wherein the upper surface of said mono-directional radiation shield (04) is provided with a circular copper sheet reflective patch (18), the edge of the round copper sheet reflection patch (18) is provided with a bulge, the bulge and the unidirectional radiation baffle (04) are provided with square metallized through holes (19) at corresponding positions, the grounding pin (17) of the circularly polarized radiation baffle (03) is clamped in the square metalized through hole (19), the middle of the unidirectional radiation baffle (04) is provided with an outlet hole (20), a feed board clamping rectangular hole (23) and a reflecting board grounding pad (24), the reflecting plate connecting bayonet (22) of the vibrator feed plate (02) is clamped in the feed plate clamping rectangular hole (23), and is welded on the unidirectional radiation baffle (04) through a reflector plate grounding pad (24).
6. The planar equiangular spiral circular polarization antenna according to claim 1, wherein a circular stud mounting hole (08) is formed in the planar equiangular spiral oscillator (01), a stud fixing hole (21) is formed in the unidirectional radiation baffle (04), and a fixing stud screw (05) penetrates through the circular stud mounting hole (08) and the stud fixing hole (21) in sequence.
7. The planar equiangular helical circularly polarized antenna according to claim 6, wherein the number of the circular stud mounting holes (08), the stud fixing holes (21) and the fixing stud screws (05) is 4.
8. A planar equiangular helical circularly polarized antenna according to claim 3 wherein said raised ground pads (09) are square and 2 in number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562979.XU CN209766635U (en) | 2019-04-24 | 2019-04-24 | Planar equiangular spiral circularly polarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920562979.XU CN209766635U (en) | 2019-04-24 | 2019-04-24 | Planar equiangular spiral circularly polarized antenna |
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| Publication Number | Publication Date |
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| CN209766635U true CN209766635U (en) | 2019-12-10 |
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| CN201920562979.XU Active CN209766635U (en) | 2019-04-24 | 2019-04-24 | Planar equiangular spiral circularly polarized antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115528421A (en) * | 2022-10-14 | 2022-12-27 | 博微太赫兹信息科技有限公司 | Millimeter wave broadband circularly polarized differential helical antenna |
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2019
- 2019-04-24 CN CN201920562979.XU patent/CN209766635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115528421A (en) * | 2022-10-14 | 2022-12-27 | 博微太赫兹信息科技有限公司 | Millimeter wave broadband circularly polarized differential helical antenna |
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