CN212162077U - S-band miniaturized ultra-wideband omnidirectional radiation vertical polarization antenna - Google Patents
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Abstract
The utility model provides a miniaturized ultra wide band omnidirectional radiation vertical polarization antenna of S wave band, include: an antenna base; the main radiation unit is arranged on the antenna base body and used for radiating electromagnetic waves; the parasitic radiation unit is arranged in the main radiation unit and is used for coupling with the main radiation unit to widen the frequency band of the radiated electromagnetic wave; the feed balance unit is arranged on the antenna substrate and used for impedance matching; and the radio frequency plug-in unit is arranged on the antenna base body and is connected with the main radiation unit. The utility model discloses a method of multiple parasitic loading and coplanar waveguide feed, the effectual size that has reduced the antenna has expanded the operating band of antenna and has reached 37.5% ultra wide band beneficial effect.
Description
Technical Field
The utility model relates to the technical field of antennas, concretely relates to miniaturized ultra wide band omnidirectional radiation vertical polarization antenna of S wave band.
Background
At present, the high-speed mobile platform industry in China develops rapidly, large-scale industrialization and rapid growth of various unmanned aerial vehicles, human-computer, motor cars and the like in various industries and technical fields such as military industry, civil industry, traffic industry, agriculture, geological survey and the like are realized, and the application field is continuously expanded towards a wider application field. In these applications, with the increasing demands for high-speed, medium-high speed mobile platforms, the demands for various special measurement and control communication antennas suitable for the above mobile platforms are also increasing gradually, and measurement and control communication antennas that are integrally mounted in a conformal manner with various mobile platforms to meet the requirements for pneumatic structure layout, miniaturization, low cost, and reliable operation of the platforms are widely applied to various systems. The communication measurement and control antenna in the commonly used mobile platform system mainly comprises a dipole antenna, a PIFA antenna, a "knife" type dipole antenna, a spiral antenna working in a normal mode and the like. In various mobile terminals, the antennas often have low gain (less than 0 dB) and narrow working band bandwidth (less than 2%), and meanwhile, antenna beams are influenced by the shielding of an organism and hardly meet the requirement of 360-degree omnidirectional radiation coverage on the horizontal plane. For half-wavelength dipole antennas such as "J" dipole antennas, W.B.Freely was originally proposed in the article "A Two meter J Antenna" (W.B.Freely, A Two meter J Antenna [ J ] QST, April, 1977). The J-shaped dipole antenna has the characteristics of simple structure, easiness in tuning and the like, but the J-shaped dipole antenna is usually narrow in working frequency band bandwidth (less than 5 percent), generally works in dot frequency, is difficult to achieve the effect through common bandwidth increasing measures, is large in size and cannot meet the requirement of miniaturization and installation. Both the PIFA Antenna and the "knife" type Antenna are monopole Antenna types, such as those described In TOKIO TAGA et al (Performance Analysis of a build-In Planar invoked F Antenna for 800MHz Band Portable Radio Unit [ J ] IEEE juournal SELECED AREAS IN communi antennas, vol.sac-5, No.5, JUNE 1987, pp.921-929.) suitable for Portable devices, and the "knife" type Antenna have the advantages of significant miniaturization feature and high integration, but such antennas have poor radiation pattern Performance and cannot meet the requirements of high-precision measurement and control and conformal concealed installation. In addition, when the spiral diameter of the spiral antenna is less than 0.18 times of the working wavelength, various normal mode spiral polar sub-antennas are formed, and the radiation pattern of the normal mode spiral polar sub-antennas is similar to a dipole pattern. Hiroi and K.Fujimoto conducted accurate computational studies on normal mode helical antennas at the end of the seventies of the last century (Y.Hiroi, K.Fujimoto.practical use of normal mode helical antenna, IEEE, AP-S International symposium Japan,1976, 238-241.). The physical installation size of the antenna is reduced due to the winding of the spiral line, the weight of the antenna system is reduced, and the installation requirement of the system is greatly simplified. However, due to the limitation of the working frequency band and the radiation aperture of each type of helical antenna, the longitudinal size of the antenna is compressed, the transverse size of the system is widened, the working bandwidth of the antenna system is reduced, the antenna presents the spot frequency working characteristic, a set of relatively complex LC broadband matching network needs to be added in the system for widening the working frequency band of the system, and the overall layout and the research and development cost of the equipment are relatively high. At present, various high-speed, medium-high speed mobile terminal system terminal antennas, especially various miniaturized and ultra-miniaturized broadband measurement and control antennas are developing towards low cost, miniaturization, compactness and light weight installation. Especially under the installation conditions of severe high-speed rolling, high-speed movement and large aerodynamic influence such as unmanned aerial vehicles, manned vehicles, high-speed vehicles and the like, the requirements of system cost, installation position, installation space and weight of the antenna, radiation direction of the antenna and the like are strict, and the shape of a radiation pattern is generally required to require omnidirectional radiation similar to that of an ideal half-wave oscillator antenna, so that various mobile platforms can still stably transmit/receive measurement and control signals in the working process.
Disclosure of Invention
The utility model discloses the main technical problem who solves provides a miniaturized ultra wide band omnidirectional radiation vertical polarization antenna of S wave band, solves the unable work demand that satisfies all kinds of unmanned aerial vehicle, have high-speed removal hidden installation environment such as motor and motor car of current antenna.
The utility model provides a miniaturized ultra wide band omnidirectional radiation vertical polarization antenna of S wave band, include:
an antenna base;
the radio frequency patch unit is arranged on the antenna substrate, is connected with the main radiation unit and is used for feeding in an antenna radio frequency signal;
the main radiation unit is arranged on the antenna base body, is connected with the radio frequency plug-in unit and is used for converting the radio frequency signal of the antenna into electromagnetic waves and radiating the electromagnetic waves;
the parasitic radiation unit is arranged in the main radiation unit and is used for coupling with the main radiation unit to widen the frequency band of the radiated electromagnetic wave;
and the feed balance unit is arranged on the antenna substrate and used for impedance matching.
Further, the antenna base body comprises a first base body surface and a second base body surface arranged opposite to the first base body surface.
Further, the feeding balance unit includes a first feeding balance unit, a second feeding balance unit, a third feeding balance unit, and a fourth feeding balance unit, the first feeding balance unit and the second feeding balance unit are disposed on the first substrate surface, the third feeding balance unit and the fourth feeding balance unit are disposed on the second substrate surface, and the first feeding balance unit, the second feeding balance unit, the third feeding balance unit, and the fourth feeding balance unit are connected to each other.
Further, the main radiation unit is disposed on the first substrate surface, and the main radiation unit includes: the feed extension unit, the feed coupling unit, the radiation unit and the spread spectrum unit;
the feed extension unit is of a rectangular structure, the lower short edge of the feed extension unit of the rectangular structure is connected with the radio frequency patch unit, the upper short edge of the feed extension unit of the rectangular structure is connected with the feed coupling unit, and the feed extension unit is used for connecting the radio frequency patch unit to the feed coupling unit;
the feed coupling unit is of an inverted isosceles trapezoid structure, the lower bottom edge of the inverted isosceles trapezoid structure is connected with the upper short edge of the feed extension unit, the upper bottom edge of the inverted isosceles trapezoid structure is connected with the radiation unit, and the feed coupling unit is used for expanding the frequency band of radiated electromagnetic waves;
the radiation unit is of a Y-shaped structure, the bottom of the radiation unit of the Y-shaped structure is connected with the upper bottom edge of the feed coupling unit, the top of the radiation unit of the Y-shaped structure is connected with the spread spectrum unit, the radiation unit of the Y-shaped structure comprises two radiation parts, each radiation part is of a parallelogram structure, and the radiation unit is used for radiating electromagnetic waves;
the spread spectrum unit is square font structure, the lower base of square font structure is the opening form, square font structure includes two vertical portions, the tip of two vertical portions respectively with the end connection of two radiation portions of "Y" font structure, the spread spectrum unit is used for the frequency band of the wide spread radiation electromagnetic wave.
Furthermore, the parasitic radiation unit is arranged on the first substrate surface, the parasitic radiation unit is of a rectangular structure, and the parasitic radiation unit is arranged in the spread spectrum unit of the square structure.
Furthermore, the radiating device also comprises a parasitic strip arranged on the first base body surface and used for widening the frequency band of the radiation battery wave, wherein the parasitic strip is of a square structure with an opening at the lower bottom edge, and the parasitic strip surrounds the outside of the frequency spreading unit.
Further, the first feed balancing unit comprises a first module and a second module, the first module is of a rectangular structure, the lower long edge of the first module of the rectangular structure is tangent to the bottom edge of part of the first substrate surface, the second module is of a right trapezoid structure, the lower bottom edge of the second module of the right trapezoid structure is tangent to the upper long edge of the first module of the rectangular structure, the oblique waist line of the second module of the right trapezoid structure is tangent to the radiation part on the corresponding side of the radiation unit of the Y-shaped structure and is tangent to the waist line on the corresponding side of the feed coupling unit of the inverted isosceles trapezoid structure;
the second feed balance unit, the third feed balance unit, the fourth feed balance unit and the first feed balance unit are the same in shape.
Furthermore, the outer sides of the two waist lines of the feed coupling unit of the inverted isosceles trapezoid structure are provided with toothed bars;
and the oblique waist line of the second module is connected with the outer side toothed strip of the waist line on the corresponding side of the feed coupling unit of the inverted isosceles trapezoid structure in a matching manner.
Compared with the prior art, the utility model discloses following technological effect has:
the utility model discloses fully considered unmanned aerial vehicle, someone machine, on-vehicle and high-speed railway etc. communication measurement and control antenna' S installation environment and position, through the radiating element size of design antenna, various composite methods such as parasitic radiating element size, parasitic strip size and feed balance unit size have realized S wave band low cost, ultra wide band, miniaturization, portable concealed installation, the omnidirectional radiation of vertical polarization, the half-wave power angle of antenna is greater than 60, and antenna gain >2dBi simultaneously; and by means of multiple parasitic loading and coplanar waveguide feeding, the size of the antenna is effectively reduced, and the beneficial effect of an ultra-wideband of which the working frequency band reaches 37.5% is expanded.
Drawings
Fig. 1 is a schematic diagram of an S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna of the present invention;
fig. 2 is a rear view of an S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna of the present invention;
fig. 3 is a side view of an S-band miniaturized ultra-wideband omni-directional radiation vertical polarized antenna of the present invention;
fig. 4 is a bottom view of the S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna of the present invention;
fig. 5 is an S11 parameter curve of the S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna of the present invention;
fig. 6 is an E-plane directional pattern of an S-band miniaturized ultra-wideband omni-directional radiation vertical polarized antenna of the present invention;
fig. 7 is the utility model discloses a miniaturized ultra wide band omnidirectional radiation vertical polarization antenna' S of S wave band H face directional diagram.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna provided by the present invention, including: the antenna comprises an antenna base body 10, a main radiation unit 20, a parasitic radiation unit 30, a feed balance unit 40 and a video plug-in unit 50.
The antenna substrate 10 is manufactured by processing an FR4 circuit board with a dielectric constant of 3.8-4.4 and a thickness of 0.0088 times wavelength, wherein the antenna substrate 10 is a rectangular structure, the length of the bottom side is 0.24 times wavelength, and the length of the vertical side is 0.465 times wavelength.
In the present embodiment, the main radiating element 20, the parasitic radiating element 30 and the feed balance element 40 are all processed on the FR4 double-sided copper-clad circuit board by a laser etching process.
The antenna base 10 includes a first base surface 101 and a second base surface 102 disposed opposite to the first base surface 101, that is, the front and back surfaces of the antenna base 10.
The radio frequency patch unit 50 is disposed on the antenna substrate, and is connected to the main radiation unit for feeding in the antenna radio frequency signal.
The main radiation unit 20 in this embodiment is disposed on the antenna base body, and is configured to convert an antenna radio frequency signal into an electromagnetic wave and radiate the electromagnetic wave.
Referring to fig. 2, the main radiating element 20 is disposed on the first substrate surface 101, and the main radiating element 20 includes: feed extension element 201, feed coupling element 202, radiating element 203 and spread spectrum element 204.
The feed extension unit 201 is a rectangular structure, the lower short side of the feed extension unit 201 of the rectangular structure is connected with the radio frequency patch unit 50, the upper short side of the feed extension unit 201 of the rectangular structure is tangentially connected with the feed coupling unit 202, and the feed extension unit 201 is used for connecting the radio frequency patch unit to the feed coupling unit. The rectangular feed extension element 201 has a short side length of 0.0154 times the wavelength and a long side length of 0.12 times the wavelength.
The feed coupling unit 202 is an inverted isosceles trapezoid structure, the lower bottom edge of the inverted isosceles trapezoid structure is connected to the upper short side of the feed extension unit 201, that is, the lower bottom edge of the inverted isosceles trapezoid structure is tangent to the upper short side of the feed extension unit 201, and the lengths of the two are the same, the upper bottom edge of the inverted isosceles trapezoid structure is connected to the radiation unit 203, and the feed coupling unit is used for expanding the frequency band of the radiated electromagnetic wave, that is, widening the operating frequency band of the antenna. The length of the upper base edge (upper edge) of the inverted isosceles trapezoid structure is 0.06 times of the wavelength, the included angle between the waist line and the upper base edge is 45-70 degrees, and the length is 0.033 times of the wavelength. In addition, the outsides of two stringways of feed coupling unit 202 of the structure of falling isosceles trapezoid are equipped with the dentate strip, specifically for use the stringway of falling isosceles trapezoid to be provided with three the same in order as the extending direction, and the contained angle is 45 isosceles right triangle's dentate arch, and two right-angle sides length of triangle-shaped is 0.008 wavelength.
The radiation unit 203 is in a Y-shaped structure, the bottom of the radiation unit 203 in the Y-shaped structure is connected with the upper bottom edge of the feed coupling unit 202, the top of the radiation unit 203 in the Y-shaped structure is connected with the spread spectrum unit 204, the radiation unit in the Y-shaped structure comprises two radiation parts (2031 and 2032), each radiation part is in a parallelogram structure, and the radiation unit is used for radiating electromagnetic waves. The outer edge of the long side of the outer side of each radiation part is formed by extending the waist line of the adjacent inverted isosceles trapezoid, the length of the outer edge is 0.106 times of the wavelength, and the distance between the outer edge of the inner side of each radiation part and the outer edge of the outer side of each radiation part is kept at 0.024 times of the wavelength. The bottom end of each radiation part is tangent and connected with the upper bottom edge of the inverted isosceles trapezoid structure and the adjacent waist line, the length of the bottom end is 0.024 times of wavelength, and the length of the top end side is 0.024 times of wavelength.
The spread spectrum unit 204 is a square structure, the lower bottom edge of the square structure is open, the square structure comprises two vertical parts (2041 and 2042), the end parts of the two vertical parts are respectively connected with the end parts of two radiation parts (2031 and 2032) of the Y-shaped structure, and the spread spectrum unit 204 is used for widening the frequency band of the radiated electromagnetic waves. The two side vertical parts (vertical sides) of the open square-shaped structure spread spectrum unit are of long strip rectangular structures, the length of the long side of each long strip rectangular structure is 0.1384 times of wavelength, the width of the short side of each long strip rectangular structure is 0.024 times of wavelength, and the lower bottom sides of the long strip rectangular structures are tangent and terminated with the upper bottom sides of the radiation parts of the adjacent Y-shaped structures. The top connecting strip 2043 of the spread spectrum unit with the open-mouth-shaped structure is a rectangular radiating strip with the length of 0.164 time wavelength and the width of 0.024 time wavelength, and the rectangular radiating strip and the two side vertical edges are connected and transited by a 90-degree semicircle with the intersection point of the two edges at the inner side as the center and the radius of 0.024 time wavelength.
The parasitic radiation element 30 is disposed in the main radiation element 20, and is configured to couple with the main radiation element 20 to widen a frequency band of the radiated electromagnetic wave.
The parasitic radiation unit 30 in this embodiment is disposed on the first substrate surface 101, the parasitic radiation unit 20 has a rectangular structure, and the parasitic radiation unit 20 is disposed in the spread spectrum unit 204 having a square structure. The length of the side adjacent to the inner side edge of the top rectangular strip of the open-mouthed structure of the spread spectrum unit 204 is 0.113 times of the wavelength, and the length of the side adjacent to the inner side edges of the vertical sides at two sides of the open-mouthed structure of the spread spectrum unit 204 is 0.1304 times of the wavelength. The sides of the rectangular structure of the parasitic radiating element 30 are spaced from the adjacent sides of the main radiating element 20 by 0.00176 wavelengths.
The antenna provided by this embodiment further includes a parasitic strip 60 disposed on the first substrate surface 101, the parasitic strip is used to widen the frequency band of the radiation battery wave, the parasitic strip 60 is a square structure with an open bottom edge, and the parasitic strip 60 surrounds the outside of the frequency spreading unit 204. Two vertical edges (601, 602) of the parasitic strip of the square structure are parallel to the vertical edges at two sides of the square structure of the spread spectrum unit 204, the vertical edges of the parasitic strip of the square structure are rectangular structures, the length of the long edge is 0.2 times of wavelength, and the width is 0.016 times of wavelength. The rectangular radiating strip 603 of the parasitic strip of the square-shaped structure is parallel to the rectangular strip at the top end of the square-shaped structure of the spread spectrum unit 204, the length of the rectangular radiating strip 603 of the parasitic strip is 0.209 times of the wavelength, and the width of the rectangular radiating strip is 0.016 times of the wavelength. The rectangular radiation strip and the two side vertical edges of the parasitic strip are connected and transited by a 90-degree semicircular ring which takes the intersection point of the inner side vertical edge of the main radiation unit and the two edges of the top rectangular strip as the circle center, the outer diameter of the semicircular ring is 0.048 times of wavelength, and the inner diameter of the semicircular ring is 0.032 times of wavelength. The distance between the inner edge of the parasitic strip-shaped structure and the outer edge of the spreading unit 204-shaped structure is kept at 0.0063 times of wavelength.
The feed balance unit 40 is disposed on the antenna base body for impedance matching.
The feed balance unit 40 includes a first feed balance unit 401, a second feed balance unit 402, a third feed balance unit 403, and a fourth feed balance unit 404, the first feed balance unit 401 and the second feed balance unit 402 are provided on a first substrate surface, the third feed balance unit 402 and the fourth feed balance unit 404 are provided on a second substrate surface, and the first feed balance unit 401, the second feed balance unit 402, the third feed balance unit 403, and the fourth feed balance unit 404 are connected to each other.
The first feed balancing unit 401 includes a first module and a second module, the first module is a rectangular structure, the lower long edge of the first module of the rectangular structure is tangent to the bottom edge of a part of the first substrate surface, the bottom edge of the rectangular structure is tangent to and coincides with the bottom edge of the antenna substrate, the length of the first module is 0.109 times of wavelength, the vertical edge is tangent to and coincides with the vertical edge of the antenna substrate, the length of the first module is 0.12 times of wavelength, the vertical edge of the long edge close to the feed extension unit 201 is parallel to the vertical edge, and the distance between the vertical edge and the vertical edge is 0.00328 times. The second module is of a right trapezoid structure, the lower bottom edge of the second module of the right trapezoid structure is tangent to the upper long edge of the first module of the rectangular structure, and the oblique waist line of the second module of the right trapezoid structure is tangent to the radiation part on the corresponding side of the radiation unit of the Y-shaped structure and is tangent to the waist line on the corresponding side of the feed coupling unit of the inverted isosceles trapezoid structure. The lower bottom edge of the right trapezoid is tangent to, coincided with and equal to the upper bottom edge of the first module rectangular structure. The length of the upper bottom edge of the right trapezoid is 0.068 times of wavelength, the length of the right-angle edge is 0.0576 times of wavelength, the length of the waist line of the oblique edge is 0.071 times of wavelength, the waist line of the oblique edge is parallel to the outer edge of the long edge of the Y-shaped structure of the adjacent radiation unit, and the distance between the waist line of the oblique edge and the outer edge of the long edge of the Y-shaped structure is 35.
The oblique waist line of the second module is connected with the outside toothed strip of the waist line at the corresponding side of the feed coupling unit of the inverted isosceles trapezoid structure in a matching manner. The method specifically comprises the steps that three 45-degree isosceles triangle grooves corresponding to the convex tooth-shaped structures of the adjacent main radiation array second part feed coupling unit in a coupling embedding relationship are sequentially recessed and etched from the joint of the hypotenuse waist line of the right trapezoid and the bottom side of the trapezoid along the hypotenuse waist line direction, and the distance between each side of each groove and each edge of the tooth-shaped protrusion is kept at 0.00328 times of wavelength.
The second feeding balance unit 402, the third feeding balance unit 403, and the fourth feeding balance unit 404 are the same in shape as the first feeding balance unit 401. The first feed balance element 401, the third feed balance element 403, the second feed balance element 402, and the fourth feed balance element 404 are distributed in mirror symmetry with respect to the vertical direction of the thickness of the antenna base 10.
The first row of 7 metallized connecting and conducting through holes are sequentially arranged between the first feed balancing unit 401 and the third feed balancing unit 403 from the bottom end edge of the first feed balancing unit 401 at a distance of 0.024 times of wavelength from the bottom end edge of the first feed balancing unit, and at a distance of 0.008 times of wavelength from the outermost long side of the first feed balancing unit as an initial center to extend at a distance of 0.016 times of wavelength towards the top end direction of the antenna base body 10, the diameter of each metallized connecting and conducting through hole is 1mm, and the second row, the third row and the fourth row of metallized connecting and conducting through holes are sequentially arranged along the inward extending direction of the bottom end of the first feed balancing unit 401, so that the same row spacing and column spacing between the rows of through holes are ensured to be 0.016 times of wavelength. The second row and the first row are placed in the same form and number, the third row is sequentially provided with 5 through holes from the bottom end of the antenna base body, and the fourth row only retains the tail and the penultimate through hole of the third row. The size, the distance and the arrangement position of the metalized connection through holes between the feed balance ground 2 and the feed balance ground 4 are similar to those of the metalized connection through holes between the first feed balance unit 401 and the third feed balance unit 403, and the metalized connection through holes between the second feed balance unit 402 and the fourth feed balance unit 404 and those between the first feed balance unit 401 and the third feed balance unit 403 are distributed in a mirror symmetry manner with respect to the central axis of the long side of the antenna base.
Referring to fig. 3 and 4, the rf connector in this embodiment is an interface for converting energy transmission between the antenna and the back-end circuit, and a standard commercially available sma-kfd27 rf connector is used to be inserted into the lower end of the antenna base body, and ensure that its inner conductor is parallel to, tangent to, and intersected with the first part of the feed extension line of the main radiating array, and is soldered firmly. And in the sma-kfd27 radio frequency connector, four grounded pins are respectively and firmly soldered with the first feed balance unit, the second feed balance unit, the third feed balance unit and the fourth feed balance unit which are correspondingly clamped.
Fig. 5 is a graph of the S11 parameter of the antenna of the present invention. Fig. 6 is an E-plane pattern of the antenna of the present invention. Fig. 7 is an H-plane pattern of the antenna of the present invention. It can be seen from the above figures that the S-band low-cost, ultra-wideband, miniaturized, portable and concealed installation is realized, the vertical polarization omnidirectional radiation is realized, the half-wave power angle of the antenna is more than 60 degrees, and the antenna gain is more than 2 dBi; and by means of multiple parasitic loading and coplanar waveguide feeding, the size of the antenna is effectively reduced, and the beneficial effect of an ultra-wideband of which the working frequency band reaches 37.5% is expanded.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (8)
1. An S-band miniaturized ultra-wideband omni-directional radiation vertical polarization antenna, comprising:
an antenna base;
the radio frequency patch unit is arranged on the antenna substrate, is connected with the main radiation unit and is used for feeding in an antenna radio frequency signal;
the main radiation unit is arranged on the antenna base body, is connected with the radio frequency plug-in unit and is used for converting the radio frequency signal of the antenna into electromagnetic waves and radiating the electromagnetic waves;
the parasitic radiation unit is arranged in the main radiation unit and is used for coupling with the main radiation unit to widen the frequency band of the radiated electromagnetic wave;
and the feed balance unit is arranged on the antenna substrate and used for impedance matching.
2. The antenna of claim 1, wherein the antenna substrate includes a first substrate face and a second substrate face disposed opposite the first substrate face.
3. The antenna according to claim 2, wherein the feed balance element includes a first feed balance element, a second feed balance element, a third feed balance element, and a fourth feed balance element, the first and second feed balance elements are provided on the first substrate surface, the third and fourth feed balance elements are provided on the second substrate surface, and the first, second, third, and fourth feed balance elements are connected to each other.
4. The antenna of claim 3, wherein the main radiating element is disposed on the first substrate surface, the main radiating element comprising: the feed extension unit, the feed coupling unit, the radiation unit and the spread spectrum unit;
the feed extension unit is of a rectangular structure, the lower short edge of the feed extension unit of the rectangular structure is connected with the radio frequency patch unit, the upper short edge of the feed extension unit of the rectangular structure is connected with the feed coupling unit, and the feed extension unit is used for connecting the radio frequency patch unit to the feed coupling unit;
the feed coupling unit is of an inverted isosceles trapezoid structure, the lower bottom edge of the inverted isosceles trapezoid structure is connected with the upper short edge of the feed extension unit, the upper bottom edge of the inverted isosceles trapezoid structure is connected with the radiation unit, and the feed coupling unit is used for expanding the frequency band of radiated electromagnetic waves;
the radiation unit is of a Y-shaped structure, the bottom of the radiation unit of the Y-shaped structure is connected with the upper bottom edge of the feed coupling unit, the top of the radiation unit of the Y-shaped structure is connected with the spread spectrum unit, the radiation unit of the Y-shaped structure comprises two radiation parts, each radiation part is of a parallelogram structure, and the radiation unit is used for radiating electromagnetic waves;
the spread spectrum unit is square font structure, the lower base of square font structure is the opening form, square font structure includes two vertical portions, the tip of two vertical portions respectively with the end connection of two radiation portions of "Y" font structure, the spread spectrum unit is used for the frequency band of the wide spread radiation electromagnetic wave.
5. The antenna of claim 4, wherein the parasitic radiation element is disposed on the first substrate surface, the parasitic radiation element has a rectangular structure, and the parasitic radiation element is disposed in the spread spectrum element of the square-shaped structure.
6. The antenna according to claim 5, further comprising a parasitic strip provided on the first base surface for broadening a frequency band of the radiation battery wave, the parasitic strip having a square-shaped structure with an open lower edge, the parasitic strip surrounding the outside of the frequency spreading unit.
7. The antenna according to claim 6, wherein the first feeding balance unit comprises a first module and a second module, the first module is in a rectangular structure, the lower long side of the first module in the rectangular structure is tangent to the bottom side of a part of the first substrate surface, the second module is in a right trapezoid structure, the lower bottom side of the second module in the right trapezoid structure is tangent to the upper long side of the first module in the rectangular structure, the oblique waist line of the second module in the right trapezoid structure is tangent to the radiation part on the corresponding side of the radiation element in the "Y" shaped structure and is tangent to the waist line on the corresponding side of the feeding coupling element in the inverted isosceles trapezoid structure;
the second feed balance unit, the third feed balance unit, the fourth feed balance unit and the first feed balance unit are the same in shape.
8. The antenna as claimed in claim 7, wherein the feed coupling element of the inverted isosceles trapezoid structure has teeth at outer sides of two waistlines;
and the oblique waist line of the second module is connected with the outer side toothed strip of the waist line on the corresponding side of the feed coupling unit of the inverted isosceles trapezoid structure in a matching manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020894974.XU CN212162077U (en) | 2020-05-25 | 2020-05-25 | S-band miniaturized ultra-wideband omnidirectional radiation vertical polarization antenna |
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| CN111478037A (en) * | 2020-05-25 | 2020-07-31 | 常熟正昊电子科技有限公司 | S-band miniaturized ultra-wideband omnidirectional radiation vertical polarization antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111478037A (en) * | 2020-05-25 | 2020-07-31 | 常熟正昊电子科技有限公司 | S-band miniaturized ultra-wideband omnidirectional radiation vertical polarization antenna |
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Effective date of registration: 20240110 Address after: 210012 First Floor, South Building, Chuangzhi Building, No.1 Xichun Road, Yuhuatai District, Nanjing City, Jiangsu Province, China -046 Patentee after: Nanjing Vigila Intelligent Technology Co.,Ltd. Address before: 215505 Building 1, No.2, Jianye Road, high tech Industrial Park, Changshu Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: CHANGSHU ZHENGHAO ELECTRONIC TECHNOLOGY CO.,LTD. |