CN210778974U

CN210778974U - L frequency channel multi-element antenna

Info

Publication number: CN210778974U
Application number: CN201922415271.4U
Authority: CN
Inventors: 曲新波; 牛自豪; 肖旭
Original assignee: Nanjing Yixin Aerospace Technology Co ltd
Current assignee: Nanjing Yixin Aerospace Technology Co ltd
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-06-16
Anticipated expiration: 2029-12-29

Abstract

The utility model discloses a L frequency channel multiple-element antenna, including the oscillator pipe be provided with the feed network in the oscillator pipe be provided with a plurality of vertical oscillators of arranging in proper order through the supporting component on the oscillator pipe, the feed network stretches out and is used for connecting the feed line of oscillator the bottom of oscillator pipe is provided with the support the base of oscillator pipe. The L-frequency band multi-oscillator antenna is small in size and light in weight, ensures high radiation performance on a horizontal plane, and has high gain in the horizontal direction.

Description

L frequency channel multi-element antenna

Technical Field

The utility model belongs to the satellite antenna field especially relates to a L frequency channel multiple element antenna.

Background

The antenna gain refers to the ratio of the power densities of signals generated by an actual antenna and an ideal radiating unit at the same point in space under the condition of equal input power, the antenna gain is used for measuring the capacity of the antenna for receiving and transmitting signals towards a specific direction, the conventional L-band multi-element antenna cannot ensure high radiation performance on a horizontal plane, the horizontal gain is low, the coverage area is small, the application scene is single, and the situations of large volume and heavy weight exist.

Therefore, how to make an L-band multi-element antenna have a high level of gain while being small and light is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a L frequency channel multiple element antenna, and L frequency channel antenna is bulky among the solution prior art, weight is heavy, and the lower problem of horizontal direction gain.

For solving the technical problem, the utility model provides a technical scheme provides a L frequency channel multiple-element antenna, including the oscillator pipe be provided with the feed network in the oscillator pipe be provided with a plurality of vertical oscillators of arranging in proper order through supporting component on the oscillator pipe, the feed network stretches out and is used for connecting the feed line of oscillator the bottom of oscillator pipe is provided with the support the base of oscillator pipe.

The utility model discloses another embodiment of L frequency channel multiple element antenna, the oscillator includes first oscillator, second oscillator and third oscillator, wherein, an oscillator unit is constituteed to first oscillator and second oscillator, just first oscillator is located second oscillator below the equidistant a plurality of from the bottom up is provided with on the oscillator pipe the oscillator unit is adjacent be provided with between the oscillator unit the third oscillator.

The utility model discloses another embodiment of L frequency channel multiple element antenna, first oscillator, second oscillator and third oscillator are all offered the first opening and the second opening that switch on from top to bottom, first open-ended diameter is less than the diameter of second opening, the oscillator pipe passes first opening and second opening will each the oscillator is connected.

In another embodiment of the L-band multiple-element antenna of the present invention, a feeding hole is opened on the first element, the feeding line passes through the feeding hole and connects to the second element, wherein the outer shell of the feeding line is electrically connected to the first element, and the inner core of the feeding line is electrically connected to the second element.

In another embodiment of the L-band multiple element antenna of the present invention, the base is provided with a first flange and a second flange, the first flange is adapted to the oscillator tube, the oscillator tube can be inserted into the first flange and fixed, the first flange is provided with a via hole for connecting the feed connector, the second flange is provided with a vertical plate extending upward, the vertical plate is provided with a through hole for fixing the feed connector, and the feed network passes through the connecting line and is electrically connected to the via hole.

The utility model discloses in another embodiment of L frequency channel multiple element antenna, supporting component includes the locator card be provided with the first supporting disk rather than the looks adaptation on the locator card, be provided with on the first supporting disk first oscillator be provided with the becket on the first opening of first oscillator be provided with the tubular metal resonator on the becket the outside cover of tubular metal resonator is equipped with the second oscillator be provided with the second supporting disk above the tubular metal resonator be provided with on the second supporting disk and be used for fixing and the screens sleeve of third oscillator.

In another embodiment of the L-band multiple-element antenna of the present invention, the oscillator tube is further provided with a support ring for supporting the inner wall of the second oscillator.

In the utility model discloses another embodiment of L frequency channel multiple element antenna, adjacent in the oscillator unit the arrangement direction of feeder is staggered arrangement, and staggered angle is 90 degrees.

In another embodiment of the L-band multiple-element antenna of the present invention, the oscillator tube is provided with an opening for the feeder line to extend out.

In another embodiment of the L-band multi-element antenna of the present invention, the feeding network is a power divider.

The utility model has the advantages that: the utility model discloses a L frequency channel multiple-element antenna, including the oscillator pipe be provided with the feed network in the oscillator pipe be provided with a plurality of vertical oscillators of arranging in proper order through the supporting component on the oscillator pipe, the feed network stretches out and is used for connecting the feed line of oscillator the bottom of oscillator pipe is provided with the support the base of oscillator pipe. The L-frequency band multi-oscillator antenna is small in size and light in weight, ensures high radiation performance on a horizontal plane, and has high gain in the horizontal direction.

Drawings

Fig. 1 is a schematic view of an embodiment of the L-band multi-element antenna of the present invention;

FIG. 2 is a partially exploded view of embodiment A of FIG. 1;

FIG. 3 is a partial cross-sectional view of embodiment A shown in FIG. 1;

FIG. 4 is a partially exploded view of embodiment B of FIG. 1;

FIG. 5 is a partial cross-sectional view of embodiment B of FIG. 1;

fig. 6 is a schematic view illustrating the connection between the oscillator tube and the base in another embodiment of the L-band multiple-element antenna of the present invention;

fig. 7 is a schematic view illustrating connection between an antenna cover and a base in another embodiment of the L-band multi-element antenna of the present invention;

fig. 8 is a radiation characteristic diagram of another embodiment of the L-band multiple element antenna of the present invention;

fig. 9 is a radiation characteristic diagram of another embodiment of the L-band multiple element antenna of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Fig. 1 is a schematic view of an embodiment of an L-band multiple element antenna of the present invention, fig. 2 is a schematic view of a partial exploded view of a portion of an embodiment a shown in fig. 1, fig. 3 is a schematic view of a partial exploded view of an embodiment a shown in fig. 1, fig. 4 is a schematic view of a partial exploded view of an embodiment B shown in fig. 1, fig. 5 is a schematic view of a partial exploded view of an embodiment B shown in fig. 1, fig. 6 is a schematic view of a resonator tube and a base in another embodiment of an L-band multiple element antenna of the present invention, fig. 7 is a schematic view of an antenna housing and a base in another embodiment of an L-band multiple element antenna of the present invention, which is combined with fig. 1 to fig. 7, the L-band multiple element antenna includes an oscillator tube 1, a feeding network is disposed in the oscillator tube 1, a plurality of vertically arranged elements are disposed on the, the bottom end of the oscillator tube 1 is provided with a base 4 for supporting the oscillator tube 1.

Preferably, the oscillator includes first oscillator 5, second oscillator 6 and third oscillator 7, wherein, an oscillator unit is constituteed to first oscillator 5 and second oscillator 6, just first oscillator 5 is located second oscillator 6 below be provided with a plurality ofly from the bottom up equidistant on oscillator pipe 1 the oscillator unit is adjacent be provided with between the oscillator unit third oscillator 7.

Further preferably, the form of the superposed oscillators may form an array in the vertical direction, so that the width of the beam in the direction becomes narrow, the gain in the lateral direction becomes large, and signals far away in the horizontal direction can be received.

Further preferably, the first oscillator 5 and the second oscillator 6 form a dipole antenna, the third oscillator 7 is an isolation oscillator, the isolation oscillator can remove mutual coupling between oscillators, and the gain of an array formed by the oscillators cannot be improved in the absence of the isolation oscillator.

Further preferably, in this embodiment, four oscillator units are provided, the third oscillator 7 is not provided above the uppermost oscillator unit of the oscillator tube 1 (no dipole antenna is provided, so that an isolation oscillator is not required), and the top end of the oscillator tube 1 is exposed, thereby facilitating welding.

Preferably, the first vibrator 5, the second vibrator 6 and the third vibrator 7 are respectively provided with a first opening 8 and a second opening 9 which are communicated up and down, the diameter of the first opening 8 is smaller than that of the second opening 9, and the vibrator tube 1 penetrates through the first opening 8 and the second opening 9 to connect the vibrators.

Further preferably, the first opening 8 of the first oscillator 5 faces upward, the first opening 8 of the second oscillator 6 faces downward, that is, the small-caliber opening of the first oscillator 5 corresponds to the small-caliber opening of the second oscillator 6, so that the first oscillator 5 and the second oscillator 6 form a dipole antenna, and the opening of the third oscillator 7 faces upward or downward without specific requirements.

Preferably, the first oscillator 5 has a feeding hole, and the feeding line 3 passes through the feeding hole and is connected to the second oscillator 6, wherein the outer shell 31 of the feeding line 3 is electrically connected to the first oscillator 5, and the inner core 32 of the feeding line 3 is electrically connected to the second oscillator 6.

Preferably, the feed network is a power divider, and in this embodiment, the feed network is a four-to-four power divider, and is placed in the oscillator tube 1, and extends out four feeder lines 3 corresponding to the four feeder holes one by one, the four feeder lines 3 pass through the corresponding feeder holes, the outer shell 31 of each feeder line 3 is connected to the corresponding first oscillator 5 by welding, and the inner core 32 of each feeder line 3 is connected to the corresponding second oscillator 6 by welding.

Further preferably, the oscillator tube 1 is provided with an opening 12 through which the feeder line 3 extends, the opening 12 facilitates the connection of the feeder line 3 extending from the oscillator tube 1 by the feeder network and the corresponding first oscillator 5 and second oscillator 6, and the positions of the opening 12 are respectively close to the positions of the corresponding first oscillator 5 and second oscillator 6. In the present embodiment, there are four openings 12 in total.

Further preferably, the opening 12 is square in shape, so that the feed line 3 extends out of the oscillator tube 1 to feed the antenna.

Further preferably, the arrangement directions of the feeder lines 3 in the adjacent oscillator units are staggered, and the staggered angles are 90 degrees, that is, the feeder lines 3 in different oscillator units are not arranged at the same position, for example, in this embodiment, there are four oscillator units, which are, from bottom to top, a first oscillator unit, a second oscillator unit, a third oscillator unit and a fourth oscillator unit, in sequence, the feeder line of the first oscillator unit and the feeder line of the second oscillator unit have an angle of 90 degrees with respect to the line connecting the centers of the oscillator tubes on the horizontal plane, the feeder line of the second oscillator unit and the feeder line of the third oscillator unit have an angle of 90 degrees with respect to the line connecting the centers of the oscillator tubes on the horizontal plane, the feeder line of the third oscillator unit and the feeder line of the fourth oscillator unit have an angle of 90 degrees with respect to the line connecting the centers of the oscillator tubes on the horizontal plane, and the feeder line of the fourth oscillator unit and the feeder line connecting the center of the first oscillator unit and the center of the oscillator tubes have, and the four feeder lines are sequentially arranged along the corresponding vibrator units from bottom to top along the clockwise direction or the anticlockwise direction. The arrangement mode of 90 degrees of phase difference can enable the antenna directional diagram to be symmetrical, the directional diagram of a single element is obviously deviated to the feeding point, and the feeding point positions of four elements are rotationally symmetrical, so that the directional diagram of the array is symmetrical.

In a top view, four feed lines 3 are connected to four points of a circle with the vibrators, and the four points bisect the circle,

preferably, the base 4 is provided with a first flange 41 and a second flange 42, the first flange 41 is adapted to the oscillator tube 1, the oscillator tube 1 can be inserted into and fixed to the first flange 41, the first flange 41 is provided with a through hole 411 for connecting a feed connector, the second flange 42 is provided with an upward extending vertical plate 43, the vertical plate 43 is provided with a through hole 431 for fixing the feed connector, and the feed network passes through the through hole 411 through a connection line to be electrically connected with the feed connector.

Preferably, the first flange 41 is provided with a fixing hole 412, the lower end of the oscillator tube 1 is provided with a fixing hole 13, and a rivet is inserted through the fixing hole 412 and the fixing hole 13 to fixedly connect the oscillator tube 1 and the base 4.

Preferably, the base 4 is further provided with a screw hole L1 through which a screw passes. The antenna is integrally fixed to a certain plane by passing a screw through the screw hole L1.

Preferably, the supporting component 2 includes the locator card 21 be provided with on the locator card 21 rather than the first supporting disk 22 of looks adaptation, be provided with on the first supporting disk 22 first oscillator 5 be provided with becket 23 on the first opening 8 of first oscillator 5 be provided with tubular metal resonator 24 on the becket 23 tubular metal resonator 24 outside cover is equipped with second oscillator 6 tubular metal resonator 24 top is provided with second supporting disk 25 be provided with on the second supporting disk 25 and be used for fixing and screens the screens sleeve 26 of third oscillator 7.

Preferably, the first supporting disk 22, the positioning clip 21 and the second supporting disk 25 play roles of supporting, positioning and isolating, support and fix the vibrator, and isolate the upper vibrator and the lower vibrator, one end of the metal ring 23 is connected with the metal tube 24, and the other end is connected with the vibrator tube 1, so that the vibrator can be grounded through the metal tube 24.

Preferably, the oscillator tube 1 is further provided with a support ring 11 for supporting an inner wall of the second oscillator 6. The support ring 11 is provided to support and fix the second vibrator 6 to the vibrator tube 1, thereby preventing the second vibrator from loosening.

Preferably, the antenna is provided with a radome Z1, the antenna system can be protected from the external environment, the antenna system has good electromagnetic wave penetration characteristics in electrical performance, and the antenna system can withstand the external severe environment in mechanical performance.

Preferably, in fig. 7, a feed connector J1 is fixed to the through hole 431, and a connector opening K1 through which the feed connector J1 is exposed is opened at the lower portion of the radome Z1.

As can be seen from fig. 8, the antenna gain diagram of the antenna at the azimuth angle Φ of 0 degree shows that at frequencies of 1.43GHz, 1.565GHz and 1.7GHz, the maximum values of the corresponding antenna gains are 7.5105dBi, 7.9609dBi and 6.5741dBi, respectively, which are all greater than 6.5 dBi. As can be seen from fig. 9, when the meridional angle θ is 90 degrees, the antenna horizontal pattern is observed, and it can be seen that the out-of-roundness of the antenna in the horizontal plane is less than 0.4dB, and the radiation in the horizontal direction is uniform.

Based on above embodiment, the utility model discloses a L frequency channel multiple element antenna, including the oscillator pipe be provided with the feed network in the oscillator pipe be provided with a plurality of vertical oscillators of arranging in proper order through supporting component on the oscillator pipe, the feed network stretches out and is used for connecting the feed line of oscillator the bottom of oscillator pipe is provided with the support the base of oscillator pipe. The L-frequency band multi-oscillator antenna is small in size and light in weight, ensures high radiation performance on a horizontal plane, and has high gain in the horizontal direction.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the protection scope of the present invention.

Claims

1. The L-band multi-element antenna is characterized by comprising an oscillator tube, wherein a feed network is arranged in the oscillator tube, a plurality of vertical elements which are sequentially arranged are arranged on the oscillator tube through a supporting assembly, the feed network extends out of a feed line used for connecting the elements, and a base used for supporting the oscillator tube is arranged at the bottom end of the oscillator tube.

2. The L-band multi-element antenna according to claim 1, wherein the element comprises a first element, a second element and a third element, wherein the first element and the second element form an element unit, the first element is located below the second element, the element pipe is provided with a plurality of element units at equal intervals from bottom to top, and the third element is arranged between the adjacent element units.

3. The L-band multi-element antenna according to claim 2, wherein the first element, the second element and the third element are provided with a first opening and a second opening which are communicated up and down, the diameter of the first opening is smaller than that of the second opening, and the oscillator tube penetrates through the first opening and the second opening to connect the elements.

4. The L-band multi-element antenna according to claim 3, wherein a feed hole is formed in the first element, the feed line penetrates through the feed hole and is connected with the second element, a shell of the feed line is electrically connected with the first element, and an inner core of the feed line is electrically connected with the second element.

5. The L-band multi-element antenna according to claim 4, wherein the base is provided with a first flange and a second flange, the first flange is matched with the oscillator tube, the oscillator tube can be inserted into and fixed to the first flange, the first flange is provided with a through hole for connecting a feed connector, the second flange is provided with an upward extending vertical plate, the vertical plate is provided with a through hole for fixing the feed connector, and the feed network passes through the through hole through a connecting line and is electrically connected with the feed connector.

6. The L-band multi-element antenna according to claim 5, wherein the supporting component comprises a positioning card, a first supporting disc matched with the positioning card is arranged on the positioning card, the first supporting disc is provided with the first element, a metal ring is arranged on a first opening of the first element, a metal pipe is arranged on the metal ring, the second element is sleeved outside the metal pipe, a second supporting disc is arranged above the metal pipe, and a clamping sleeve used for fixing and clamping the third element is arranged on the second supporting disc.

7. The L-band multi-element antenna according to claim 6, wherein a support ring for supporting the inner wall of the second element is further arranged on the oscillator tube.

8. The L-band multi-element antenna according to claim 7, wherein the feeder lines in adjacent element units are arranged in a staggered manner, and the staggered angle is 90 degrees.

9. The L-band multiple-element antenna according to claim 8, wherein the oscillator tube is provided with an opening through which the feeder line extends.

10. The L-band group antenna according to claim 9, wherein the feed network is a power divider.