LS waveband broadband wide-beam miniaturized antenna

Abstract

The utility model belongs to the technical field of antennas, and provides an LS wave band broadband wide beam miniaturized antenna, which comprises a floor, baffle plates, a fixed support plate, a folding oscillator arm, a metal oscillator arm and a coupling disc, the baffle plates are vertically arranged at two ends of the floor, the fixed support plate is vertically arranged on the floor, the folding oscillator arm is connected with the fixed support plate, and the metal oscillator arm is connected with the coupling disc. The metal oscillator arm is connected with the folding oscillator arm, the metal oscillator arm and the folding oscillator arm are vertically arranged, and the coupling disc is arranged on the metal oscillator arm. According to the utility model, the floor and the oscillator arms are vertically arranged to form folding, so that the size of the antenna is reduced, the radiation performance of the antenna is ensured, the wide beam performance of the antenna in the range of 1.5 GHz-5GHz can be realized, and the wide beam performance of the antenna in the whole frequency band is good.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to an LS band wide bandwidth beam miniaturized antenna. Background Art

[0002] As mobile communication standards become increasingly stringent around the world, spectrum resources are becoming increasingly scarce, and users are constantly demanding new requirements for transmission speeds and operating bandwidth. Antennas need to develop broadband to avoid the electromagnetic compatibility and interference associated with placing multiple antennas in a limited space. Therefore, broadband technology has become a research hotspot for over a decade. Furthermore, both civilian wireless communication equipment and military communication systems require miniaturization and compactness while ensuring high-quality communication or signal transmission. In communication systems, demands for positioning, reconnaissance, and detection accuracy continue to increase. Because the location of detected or reconnaissance targets is random in space, achieving more precise positioning accuracy or higher communication quality requires antennas with wider beamwidths to more quickly acquire targets. Furthermore, achieving wide-angle scanning in large phased array antenna systems also places higher demands on the antenna's beamwidth. Utility Model Content

[0003] In view of the defects in the prior art, the present invention provides a LS band wide bandwidth beam miniaturized antenna to solve the problem of large antenna size.

[0004] The utility model provides an LS band wide bandwidth beam miniaturized antenna, comprising:

[0005] floor;

[0006] baffles, vertically arranged at both ends of the floor;

[0007] A fixed support plate is vertically arranged on the floor;

[0008] A folding vibrator arm connected to the fixed support plate;

[0009] A metal vibrator arm is connected to the folding vibrator arm, and the metal vibrator arm and the folding vibrator arm are arranged vertically;

[0010] The coupling disk is arranged on the metal vibrator arm.

[0011] It can be seen from the above technical solution that the utility model provides an LS band wide bandwidth beam miniaturized antenna, which reduces the antenna size and realizes antenna miniaturization by folding the dipole arm and the floor.

[0012] Optionally, the antenna further includes a coaxial connector and a metal post, wherein the coaxial connector is provided through one of the two folded dipole arms, and the metal post is provided through the other one. By adjusting the distance between the feeding point and the metal post, the input impedance of the antenna is adjusted to achieve impedance matching of the antenna.

[0013] Optionally, a metal sheet is connected between the coaxial connector and the metal column, one end of the metal sheet is connected to the inner core of the coaxial connector, and the other end of the metal sheet is connected to the metal column.

[0014] Optionally, a nylon column is further included, which is arranged on the metal vibrator arm and is used to fix and support the coupling disk.

[0015] Optionally, the width of the metal vibrator arm gradually increases from both ends to the inside.

[0016] Optionally, weight-reducing holes are provided on the floor, the baffle and the metal vibrator arm.

[0017] By adopting the above technical solution, this application has at least the following technical effects:

[0018] The utility model provides a LS band wide bandwidth beam miniaturized antenna, which reduces the size of the antenna by folding the dipole arm and the floor, thereby achieving antenna miniaturization;

[0019] The LS band wide-band beam miniaturized antenna provided by the utility model can achieve wide-beam performance in the range of 1.5GHz to 4GHz while ensuring the antenna radiation performance. The antenna beam width in the azimuth plane is 91° to 124° in the entire frequency band, and the antenna beam width in the elevation plane is 103° to 168°. The antenna wide beam performance is good.

[0020] The vibrator arm of the utility model is made of metal and has good power resistance performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0022] Figure 1 A three-dimensional schematic diagram of a LS-band wide-bandwidth beam miniaturized antenna provided by an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A front view of a LS-band wide bandwidth beam miniaturized antenna is shown;

[0024] Figure 3 for Figure 1 A top view of a LS-band wide bandwidth beam miniaturized antenna is shown;

[0025] Figure 4 A standing wave curve diagram of a LS-band wide-bandwidth beam miniaturized antenna provided by an embodiment of the present utility model;

[0026] Figure 5 The gain pattern of a miniaturized LS-band wide-bandwidth beam antenna at each frequency point in the elevation plane provided by an embodiment of the present utility model;

[0027] Figure 6 The present invention provides an embodiment of an LS band wide bandwidth beam miniaturized antenna with gain patterns at various frequency points in the azimuth plane.

[0028] Reference numerals:

[0029] 1-floor; 2-baffle; 3-fixed support plate; 4-folding vibrator arm; 5-metal vibrator arm; 6-coupling disc; 7-coaxial connector; 8-metal column; 9-metal sheet; 10-nylon column; 11-weight reduction hole. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] like Figure 1-3As shown, this embodiment provides an LS-band wide-bandwidth beam miniaturized antenna, including a floor 1, a baffle 2, a fixed support plate 3, a folded dipole arm 4, a metal dipole arm 5 and a coupling disk 6. The baffle 2 is vertically arranged at both ends of the floor 1, the fixed support plate 3 is vertically arranged on the floor 1, the folded dipole arm 4 is connected to the fixed support plate 3, the metal dipole arm 5 is connected to the folded dipole arm 4, the metal dipole arm 5 and the folded dipole arm 4 are vertically arranged, and the coupling disk 6 is arranged on the metal dipole arm 5.

[0034] This embodiment provides a miniaturized LS-band wide-bandwidth antenna with a vertically folded base plate and dipole arms, minimizing the antenna size. While maintaining excellent radiation performance, it also achieves wide-beam performance in the 1.5 GHz to 4 GHz range. Across the entire frequency band, the antenna's azimuth beamwidth is 91°-124°, and its elevation beamwidth is 103°-16°. The antenna exhibits excellent wide-beam performance. The dipole arms are made of metal, offering excellent power handling.

[0035] When the height of the baffle 2 is increased, the low-frequency standing wave is optimized; when the distance between the baffle 2 and the metal vibrator arm 5 is increased, the standing wave and the directivity pattern are improved.

[0036] In one embodiment, the dimensions a1 and a2 of the floor 1 are 40 mm x 45.5 mm, and the height of the baffle 2 is b = 22.1 mm. The floor 1 and baffle 2 together constitute the antenna floor 1. The folding support arm and metal dipole arm 5 are fixed at a height of d1 = 17.7 mm above the floor 1 via a fixed support plate 3. The antenna's impedance matching is adjusted by adjusting the length and width of the dipole arm. By adjusting the distance c between the baffle 2 and the folding dipole arm 4 and the height of the baffle 2, the antenna's input impedance and resonant frequency can be adjusted without changing the dipole arm length. This adjustment is particularly effective at low frequencies, increasing design flexibility.

[0037] In one embodiment, a coaxial connector 7 and a metal column 8 are further included. The coaxial connector 7 is arranged through one of the two folded dipole arms 4, and the metal column 8 is arranged through the other. By adjusting the distance between the feeding point and the metal column 8, the input impedance of the antenna is adjusted to achieve impedance matching of the antenna. A metal sheet 9 is also connected between the coaxial connector 7 and the metal column 8. One end of the metal sheet 9 is connected to the inner core of the coaxial connector 7, and the other end of the metal sheet 9 is connected to the metal column 8. By adjusting the distance between the feeding point and the metal column 8, the input impedance of the antenna is adjusted to achieve broadband impedance matching of the antenna.

[0038] A coaxial probe feeding form is adopted. The inner core of the coaxial connector 7 is connected to one of the dipole arms through the metal sheet 9, and the outer skin of the coaxial connector 7 is connected to the other dipole arm. Then, by adjusting the position of the feeding point, the size of the coupling disk, etc., the input impedance of the antenna can be adjusted to achieve a standing wave of less than 1.5 in the range of 1.5GHz-4GHz and an impedance bandwidth greater than 2.67 octaves.

[0039] See also Figure 2 , also includes a nylon post 10, which is set on the metal dipole arm 5 and is used to fix and support the coupling disc 6. The nylon post 10 fixes the coupling disc 6 at a position e = 3.8 mm above the metal dipole arm 5. The coupling disc 6 has a diameter of 21.6 mm. By adjusting the size of the coupling disc 6 and its height relative to the dipole arm, the antenna beam width is adjusted, and the impedance matching of the antenna is further adjusted to achieve broadband and wideband beam performance.

[0040] like Figure 1 、 3 As shown, the width of the metal dipole arm 5 gradually increases from both ends inward. The metal dipole arm 5 is narrow at the feed point and gradually widens. The dipole arm width d2 = 36.7mm, the total length of a pair of metal dipole arms 5 d3 = 31.2mm, and the length of the folded dipole arm 4 d4 = 11.2mm. By adjusting the dipole arm length and width, the antenna impedance matching is adjusted.

[0041] like Figure 1 As shown, weight-reducing holes 11 are provided on the floor 1 , the baffle 2 and the metal vibrator arm 5 .

[0042] See also Figure 4 , shows the standing wave curve of an LS-band wide-bandwidth beam miniaturized antenna provided in this embodiment. The bandwidth covers 1.5GHz-4GHz, the relative bandwidth is 90.9%, and the bandwidth is 2.67 times the frequency, achieving good wide-band impedance matching performance. At the same time, the antenna size is 40mm×45.5mm×22.1mm, which is greatly reduced compared to the traditional vibrator antenna, realizing antenna miniaturization.

[0043] See also Figure 5 , showing the gain radiation pattern of an LS-band wide bandwidth beam miniaturized antenna provided by this embodiment at each frequency point in the elevation plane. The beam width at each frequency point in the elevation plane in the range of 1.5GHz-4GHz is greater than 103°, which is wider than the beam width of traditional antennas, achieving wide beam performance over a wider frequency band.

[0044] See also Figure 6, showing the gain radiation pattern of an LS-band wide-bandwidth beam miniaturized antenna provided by this embodiment at each frequency point in the azimuth plane. The beam width at each frequency point in the azimuth plane in the range of 1.5GHz-4GHz is greater than 91°, which is wider than the beam width of traditional antennas, achieving wide-beam performance over a wider frequency band.

[0045] In the specification of the present invention, a large number of specific details are described. However, it is understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A LS band wide bandwidth beam miniaturized antenna, characterized in that: include: floor; baffles, vertically arranged at both ends of the floor; A fixed support plate is vertically arranged on the floor; A folding vibrator arm connected to the fixed support plate; A metal vibrator arm is connected to the folding vibrator arm, and the metal vibrator arm and the folding vibrator arm are arranged vertically; The coupling disk is arranged on the metal vibrator arm.

2. The LS band wide bandwidth beam miniaturized antenna according to claim 1, characterized in that: It also includes a coaxial connector and a metal column. The coaxial connector is arranged through one of the two folded dipole arms, and the metal column is arranged through the other one.

3. The LS band wide bandwidth beam miniaturized antenna according to claim 2, characterized in that: A metal sheet is further connected between the coaxial connector and the metal column, one end of the metal sheet is connected to the inner core of the coaxial connector, and the other end of the metal sheet is connected to the metal column.

4. The LS band wide bandwidth beam miniaturized antenna according to claim 3, characterized in that: It also includes a nylon column, which is arranged on the metal vibrator arm and is used to fix and support the coupling disk.

5. The LS band wide bandwidth beam miniaturized antenna according to claim 1, characterized in that: The width of the metal vibrator arm gradually increases from both ends toward the inside.

6. The LS band wide bandwidth beam miniaturized antenna according to claim 1, characterized in that: The floor, the baffle and the metal vibrator arm are all provided with weight-reducing holes.

Images