Radiating unit suitable for multi-frequency circularly polarized antenna

Abstract

A radiation unit suitable for a multi-frequency circularly polarized antenna comprises two orthogonally arranged substrates, the front surface of each substrate is provided with two symmetrical L-shaped oscillator arms, the transverse line parts of the L-shaped oscillator arms are provided with U-shaped high-resistance lines, the far ends of the two L-shaped oscillator arms are provided with drooping segments, the lower sides of the near ends of the two L-shaped oscillator arms are connected with a balun structure, and the lower sides of the near ends of the two L-shaped oscillator arms are connected with the balun structure. The outer side of the balun structure is provided with an open-circuit line, the reverse side of the substrate is provided with feeder lines, the two feeder lines are linear and S linear respectively, and the phase difference of the two feeder lines is 90 degrees. According to the utility model, the radiation aperture of the radiation unit is reduced through the droop section, thereby reducing the coupling degree between the units; a spatial filter is formed by using a U-shaped high-resistance line and an L-shaped oscillator arm, and an open-circuit line is arranged on the outer side of a balun structure; good circular polarization radiation is formed by using the two feeder lines with the phase difference of 90 degrees. Finally, the radiation unit which is small in coupling between same frequency bands, excellent in radiation pattern, capable of achieving the wave-transparent function for the high-frequency band radiation unit and the like is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to antenna engineering technical field, especially relate to a radiation unit suitable for multi -frequency circularly polarized antenna. BACKGROUND

[0002] In the information age of the 21st century, satellite communication technology as the bridge connecting every corner of the earth, is developing at an unprecedented speed. With the diversification and complexity of communication demand, the traditional single frequency band satellite antenna has been difficult to meet the growing demand for communication. Therefore, multi -frequency low -orbit satellite antenna technology arises at the historic moment, becomes the important research direction in satellite communication field.

[0003] However, the coupling degree between the radiation units of the multi -frequency antenna used at present is big, and the high frequency radiation unit in it is easy to produce parasitic current at the low frequency radiation unit, which has great influence on the performance of the antenna.

[0004] Therefore, in view of the deficiencies existing in the prior art, a radiation unit suitable for multi -frequency circularly polarized antenna is designed to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the utility model, and for the convenience of understanding by the person skilled in the art, and the above content cannot be considered as known by the person skilled in the art because the above content is described in the background of the utility model. CONTENT OF THE UTILITY MODEL

[0006] In order to overcome the deficiencies in the prior art, the utility model aims at disclosing a radiation unit suitable for multi -frequency circularly polarized antenna, which is used to solve the problems of large coupling degree between the radiation units of multi -frequency antenna and parasitic current produced by high frequency radiation unit at low frequency radiation unit.

[0007] The utility model discloses a kind of radiation units suitable for multi -frequency circularly polarized antenna, including two orthogonal settings substrate, the front of substrate is equipped with two symmetrical L-type vibrator arm, the horizontal line part of L-type vibrator arm is equipped with U-shaped high resistance line, the distal end of two L-type vibrator arms is equipped with sag section, the proximal end lower side of two L-type vibrator arms is connected with Barun structure, the outside of Barun structure is equipped with open circuit line, the back of two substrates is equipped with feed line, two feed lines are straight line type and S line type respectively, and the phase difference of two feed lines is 90 °.

[0008] Preferred technical scheme: the length of the horizontal line part of L-type vibrator arm is 0.3-0.4 λ, the length of the sag section of L-type vibrator arm is 0.2-0.3 λ, and λ is the wavelength of high frequency band. Reduce the radiation aperture of radiation unit, and then reduce the coupling degree between unit.

[0009] The length of the U-shaped high-resistance line is 0.25 lambda, and the parasitic current generated by the high-frequency radiation unit is inhibited.

[0010] The open circuit line is arranged at the position of 3 / 4 of the height of the balun structure, and the length of the open circuit line is 0.25 lambda, and the parasitic current generated by the high-frequency radiation unit is inhibited.

[0011] The substrate is any one of a dielectric substrate, a plastic electroplating substrate and a sheet metal forming substrate.

[0012] The clamping grooves at the upper end and the lower end are clamped and fixed to each other, and the two substrates are conveniently assembled and positioned.

[0013] The utility model discloses a kind of radiation units suitable for multi-frequency circularly polarized antenna technology, and the beneficial effects compared with prior art are as follows:

[0014] The utility model discloses a kind of radiation units suitable for multi-frequency circularly polarized antenna technology, and the beneficial effects compared with prior art are as follows: BRIEF DESCRIPTION OF DRAWINGS

[0015] To more clearly illustrate the specific embodiment of the utility model or the technical scheme in prior art, the following will be briefly introduced to the drawing needed to be used in specific embodiment or prior art description, and obviously, the drawing in the following description is some embodiments of the utility model, and for ordinary skilled person in the art, other drawings can be obtained according to these drawings without creative labor.

[0016] Figure 1 It is an isometric view of the radiation unit suitable for multi-frequency circularly polarized antenna of the utility model;

[0017] Figure 2 It is an explosion view of the radiation unit suitable for multi-frequency circularly polarized antenna of the utility model;

[0018] Figure 3 It is a front view of the radiation unit suitable for multi-frequency circularly polarized antenna of the utility model;

[0019] Figure 4This is a rear view of a radiating element suitable for a multi-frequency circularly polarized antenna according to the present invention.

[0020] Figure 5 This is a right view of a radiating element suitable for a multi-frequency circularly polarized antenna according to the present invention;

[0021] Figure 6 This is a left view of a radiating element of a multi-frequency circularly polarized antenna according to the present invention.

[0022] In the above attached diagrams, 1 is the substrate; 11 is the snap-fit ​​groove; 2 is the L-shaped vibrator arm; 3 is the U-shaped high-resistance line; 4 is the drooping section; 5 is the balun structure; 6 is the open circuit line; and 7 is the feed line. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0027] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example:

[0030] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this utility model discloses a radiating element suitable for a multi-frequency circularly polarized antenna, comprising two orthogonally arranged substrates 1. Each substrate 1 has two symmetrical L-shaped dipole arms 2 on its front side. Each L-shaped dipole arm 2 has a U-shaped high-impedance line 3 on its horizontal part. The U-shaped high-impedance line 3 and the L-shaped dipole arm 2 form a spatial filter to reduce parasitic currents caused by the influence of high-frequency radiating elements and improve antenna performance. The ends of the two symmetrical L-shaped dipole arms 2 that are far apart from each other are provided with a drooping section 4. The radiating element uses the drooping section 4 to reduce the radiating aperture, thereby reducing the coupling between radiating elements. A balun structure 5 is connected to the lower side of the ends of the two symmetrical L-shaped dipole arms 2 that are close to each other. An open line 6 is provided on the outside of the balun structure 5 to suppress the parasitic currents generated by the high-frequency radiating element on the low-frequency radiating element balun structure 5. The reverse side of both substrates 1 is provided with feed lines 7. The two feed lines 7 are linear and S-shaped, respectively, and the phase difference between the two feed lines 7 is 90° to form good circularly polarized radiation.

[0031] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in order to reduce the coupling between radiating elements, the length of the horizontal part of the L-shaped oscillator arm 2 is 0.3-0.4λ, and the length of the drooping section 4 of the L-shaped oscillator arm 2 is 0.2-0.3λ, where λ is the wavelength of the high-frequency band.

[0032] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, to ensure the suppression effect on parasitic current, the length of the U-shaped high-resistivity line 3 is 0.25λ, and the open line 6 is set at 3 / 4 of the height of the balun structure 5, with a length of 0.25λ.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, to ensure the stability of the antenna radiating element, substrate 1 can be any one of dielectric substrate, plastic electroplated substrate, and sheet metal forming substrate.

[0034] like Figure 1 and Figure 2 As shown, to facilitate the assembly and disassembly of the radiation unit, the two substrates 1 have snap-fit ​​grooves 11 in the middle of the upper and lower ends, respectively, and the snap-fit ​​grooves 11 at the upper and lower ends are snapped together and fixed.

[0035] The radiating element designed in this invention has the function of suppressing high-frequency parasitic radiation, and has the characteristics of small shape, low inter-array coupling, and excellent array non-circularity; it is particularly suitable for multi-frequency circularly polarized antenna systems.

[0036] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radiating element suitable for a multi-frequency circularly polarized antenna, comprising two orthogonally arranged substrates (1), characterized in that: The front surface of the substrate (1) is provided with two symmetrical L-shaped vibrator arms (2), the horizontal line part of the L-shaped vibrator arm (2) is provided with a U-shaped high resistance line (3), the distal end of the two L-shaped vibrator arms (2) is provided with a drooping section (4), the proximal end of the two L-shaped vibrator arms (2) is connected with a balun structure (5) on the lower side, the outer side of the balun structure (5) is provided with an open circuit line (6), the back surface of the two substrates (1) is provided with a feed line (7), the two feed lines (7) are linear and S-shaped respectively, and the phase difference of the two feed lines (7) is 90°.

2. The radiating element according to claim 1, adapted for use in a multi-frequency circularly polarized antenna, characterized in that: The length of the horizontal line part of the L-shaped vibrator arm (2) is 0.3-0.4λ, the length of the drooping section (4) of the L-shaped vibrator arm (2) is 0.2-0.3λ, and λ is the wavelength of the high frequency band.

3. The radiating element of claim 2, wherein: The length of the U-shaped high resistance line (3) is 0.25λ.

4. The radiating element of claim 3, wherein: The open circuit line (6) is arranged at the position of 3 / 4 of the height of the balun structure (5), and the length of the open circuit line (6) is 0.25λ.

5. The radiating element suitable for a multi-frequency circularly polarized antenna according to claim 1, characterized in that: The substrate (1) is any one of a dielectric substrate, a plastic electroplated substrate and a sheet metal formed substrate.

6. The radiating element suitable for use in a multi-frequency circularly polarized antenna according to claim 1, characterized in that: The two substrates (1) are respectively provided with clamping grooves (11) in the middle of the upper end and the lower end, and the clamping grooves (11) at the upper end and the lower end are clamped and fixed to each other.

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