CN210576428U - S-band small four-arm helical antenna - Google Patents
S-band small four-arm helical antenna Download PDFInfo
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- CN210576428U CN210576428U CN201921851061.3U CN201921851061U CN210576428U CN 210576428 U CN210576428 U CN 210576428U CN 201921851061 U CN201921851061 U CN 201921851061U CN 210576428 U CN210576428 U CN 210576428U
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Abstract
The utility model discloses a small-size quadrifilar helix antenna of S wave band, include: the antenna radio frequency signal interface and the antenna structure are integrally formed; the antenna structure comprises a base, an outer conductor, an inner conductor, a sleeve core, a plug core, a first spiral arm, a protective cover plate, a second spiral arm, a first countersunk head screw and a second countersunk head screw; the base is connected with the inner conductor, the inner conductor is connected with the outer conductor, the outer conductor is connected with the sleeve core, the sleeve core is connected with the inserting core, the first spiral arm is connected with the outer conductor, the second spiral arm is connected with the outer conductor, the protecting cover plate is arranged at one end of the outer conductor, and the other end of the outer conductor is arranged on the base; first countersunk screw sets up in protection apron below, and second countersunk screw sets up on the base etc.. The utility model discloses under the little condition of size, realized 110 degrees beam width to and be greater than 2.25 dBi' S antenna gain, have the advantage that the size is little, the gain is big etc. at the S wave band.
Description
Technical Field
The utility model relates to an antenna technology field, more specifically relates to a small-size four-arm helical antenna of S wave band.
Background
At present, the prior antenna technical scheme has the following defects:
1. stable structure and reliability: at present, the structure adopted conventionally is that a flexible printing film, a flexible printing film circuit material, an FPC and the like are wrapped outside a medium cylinder, and the structure is also called as a film printing circuit and a flexible PCB. The satellite has high reliability requirements on various components because the four spiral arms of the four-arm spiral are printed on the flexible printed film circuit and can hardly be maintained in space, and the reliability is not high because flexible materials are easy to deform.
2. Big size and big mass: the conventional four-arm helical antenna has large size and heavy weight.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art 'S is not enough, provides a small-size quadrifilar helix antenna of S wave band, under the little condition of assurance size, has realized 110 degrees beam width to and be greater than 2.25 dBi' S antenna gain, have the advantage that the size is little, the gain is big etc. at the S wave band.
The purpose of the utility model is realized through the following technical scheme:
an S-band small-sized quadrifilar helix antenna, an antenna radio frequency signal interface and an antenna structure are integrally formed; the antenna structure comprises a base, an outer conductor, an inner conductor, a sleeve core, a plug core, a first spiral arm, a protective cover plate, a second spiral arm, a first countersunk head screw and a second countersunk head screw; the base is connected with the inner conductor, the inner conductor is connected with the outer conductor, the outer conductor is connected with the sleeve core, the sleeve core is connected with the inserting core, the first spiral arm is connected with the outer conductor, the second spiral arm is connected with the outer conductor, the protecting cover plate is arranged at one end of the outer conductor, and the other end of the outer conductor is arranged on the base; first countersunk screw sets up in the protection apron below, and second countersunk screw sets up on the base.
Further, the antenna radio frequency signal interface comprises an SMA female head.
Furthermore, the protective cover plate comprises a polyimide protective cover plate.
Furthermore, the bottom plate of the base is of a metal structure and is used for providing a reference ground for the antenna radiator.
Furthermore, a groove is formed in the outer conductor.
Furthermore, four circular through holes are formed in the base and are mounted on the satellite structure through screws, and the fixing effect is achieved.
Further, the first spiral arm comprises a bronze spiral arm, and the second spiral arm comprises a bronze spiral arm.
Further, the outer conductor comprises a brass outer conductor.
Further, the inner conductor comprises a brass inner conductor.
The utility model has the advantages that:
(1) the utility model discloses with littleer size, realized 110 degrees beam width to and be greater than 2.25 dBi' S antenna gain, have the advantage that the size is little, the gain is big etc. at the S wave band.
(2) The utility model discloses set up the groove on the outer conductor, improved four arm helical antenna's wide band characteristic etc..
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a side view of the present invention.
Fig. 2 is a bottom view of the present invention.
In the figure, a base 1, an outer conductor 2, an inner conductor 3, a sleeve core 4, a core insert 5, a first spiral arm 6, a protective cover plate 8, a second spiral arm 7, a first countersunk screw 9 and a second countersunk screw 10 are arranged.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description. Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Before describing the embodiments, some necessary terms need to be explained. For example:
if the terms "first," "second," etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a "first" element discussed below could also be termed a "second" element without departing from the teachings of the present invention. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
The various terms appearing in this application are used for the purpose of describing particular embodiments only and are not intended as limitations on the invention, except where the context clearly dictates otherwise, the singular is intended to include the plural as well.
When the terms "comprises" and/or "comprising" are used in this specification, these terms are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence and/or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
As shown in fig. 1 and 2, an S-band small quadrifilar helix antenna has an antenna rf signal interface integrally formed with an antenna structure; the antenna structure comprises a base 1, an outer conductor 2, an inner conductor 3, a sleeve core 4, a core insert 5, a first spiral arm 6, a protective cover plate 8, a second spiral arm 7, a first countersunk screw 9 and a second countersunk screw 10; the base 1 is connected with an inner conductor 3, the inner conductor 3 is connected with an outer conductor 2, the outer conductor 2 is connected with a sleeve core 4, the sleeve core 4 is connected with a plug core 5, a first spiral arm 6 is connected with the outer conductor 2, a second spiral arm 7 is connected with the outer conductor 2, a protective cover plate 8 is arranged at one end of the outer conductor 2, and the other end of the outer conductor 2 is arranged on the base 1; the first countersunk screw 9 is arranged below the protective cover plate 8, and the second countersunk screw 10 is arranged on the base 1.
Further, the antenna radio frequency signal interface comprises an SMA female head.
Further, the protective cover plate 8 comprises a polyimide protective cover plate.
Further, the bottom plate of the base 1 is a metal structure and is used for providing a reference ground for the antenna radiator.
Further, a groove is formed in the outer conductor 2.
Furthermore, four circular through holes are formed in the base 1 and are mounted on the satellite structure through screws, and the fixing effect is achieved.
Further, the first spiral arm 6 comprises a spiral arm made of bronze, and the second spiral arm 7 comprises a spiral arm made of bronze.
Further, the outer conductor 2 comprises a brass outer conductor.
Further, the inner conductor 3 comprises a brass inner conductor.
Example 1
As shown in fig. 1 and 2, those skilled in the art can use the present invention as an S-band small quadrifilar helical antenna, in which the antenna rf signal interface and the antenna structure are integrally formed; the antenna structure comprises a base 1, an outer conductor 2, an inner conductor 3, a sleeve core 4, a core insert 5, a first spiral arm 6, a protective cover plate 8, a second spiral arm 7, a first countersunk screw 9 and a second countersunk screw 10; the base 1 is connected with an inner conductor 3, the inner conductor 3 is connected with an outer conductor 2, the outer conductor 2 is connected with a sleeve core 4, the sleeve core 4 is connected with a plug core 5, a first spiral arm 6 is connected with the outer conductor 2, a second spiral arm 7 is connected with the outer conductor 2, a protective cover plate 8 is arranged at one end of the outer conductor 2, and the other end of the outer conductor 2 is arranged on the base 1; the first countersunk screw 9 is arranged below the protective cover plate 8, and the second countersunk screw 10 is arranged on the base 1. Wherein the first helical arm 6 comprises A, C turns, the second helical arm 7 comprises A, D turns, etc.
In this embodiment, for the stability and the reliability of structure, the utility model discloses with antenna radio frequency signal interface and antenna integration, antenna signal interface is the female head of standard SMA, joint design and antenna structure integrated into one piece can see from figure 1, 2. In this embodiment, the length of the antenna is set to 46.3mm, the maximum diameter of the circle projected to the base can be 30mm, the length of the antenna and the joint together can be 63.55mm, the maximum diameter of the projected circle to the bottom can be 35mm, and the occupied space volume is small.
Single port (SMA) output: in consideration of reliability and universality, a coaxial line feed self-common interface SMA (shape memory alloy) is adopted, and the interface and the antenna are integrated, so that the reliability is improved.
Stable in structure, the reliability is high: the antenna structure of the embodiment is a mechanical structure, the four spiral arms are made of beryllium bronze, the outer conductor of the antenna main body is made of brass, the inner conductor is made of lead brass and the like, the protective cover is made of polyimide, the polyimide is one of organic high polymer materials with the best comprehensive performance, the high temperature resistance reaches over 400 ℃, the long-term use temperature range is-200-300 ℃, no obvious melting point exists, the high insulation performance is realized, and the antenna belongs to F-H grade insulation materials.
On the basis of satisfying the biggest electrical property, this embodiment has still realized that the antenna size is miniaturized, the lightweight, and the base is little to antenna electrical property influence, and the performance is excellent.
In other technical features in this embodiment, those skilled in the art can flexibly select the technical features according to actual situations to meet different specific actual requirements. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known components, structures or parts are not described in detail in order to avoid obscuring the present invention, and the technical scope of the present invention is defined by the claims.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are used in a generic sense as is understood by those skilled in the art. For example, the components may be fixedly connected, movably connected, integrally connected, or partially connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected inside two elements, and the like, and for those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations, that is, the expression of the language and the implementation of the actual technology can flexibly correspond, and the expression of the language (including the drawings) of the specification of the present invention does not constitute any single restrictive interpretation of the claims.
Modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, which should be limited only by the claims appended hereto. In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known techniques, such as specific construction details, operating conditions, and other technical conditions, have not been described in detail in order to avoid obscuring the present invention.
Claims (9)
1. An S-band small-sized quadrifilar helix antenna is characterized in that an antenna radio frequency signal interface and an antenna structure are integrally formed; the antenna structure comprises a base (1), an outer conductor (2), an inner conductor (3), a sleeve core (4), a plug core (5), a first spiral arm (6), a protective cover plate (8), a second spiral arm (7), a first countersunk screw (9) and a second countersunk screw (10); the base (1) is connected with the inner conductor (3), the inner conductor (3) is connected with the outer conductor (2), the outer conductor (2) is connected with the sleeve core (4), the sleeve core (4) is connected with the insertion core (5), the first spiral arm (6) is connected with the outer conductor (2), the second spiral arm (7) is connected with the outer conductor (2), the protective cover plate (8) is arranged at one end of the outer conductor (2), and the other end of the outer conductor (2) is arranged on the base (1); the first countersunk head screw (9) is arranged below the protective cover plate (8), and the second countersunk head screw (10) is arranged on the base (1).
2. An S-band compact quadrifilar helix antenna according to claim 1, wherein the antenna radio frequency signal interface comprises a SMA female.
3. An S-band compact quadrifilar helix antenna according to claim 1, characterized in that the protective cover (8) comprises a protective cover of polyimide material.
4. An S-band compact quadrifilar helix antenna according to claim 1, characterized in that the base plate of the chassis (1) is of a metallic construction, which is used to provide a reference ground for the antenna radiator.
5. An S-band compact quadrifilar helix antenna according to claim 1, characterized in that the outer conductor (2) is slotted.
6. An S-band compact quadrifilar helix antenna according to claim 1, characterised in that four circular through holes are provided in the base (1) and are attached to the satellite structure by screws for fixation.
7. An S-band compact quadrifilar helix antenna according to claim 1, characterized in that the first helix arm (6) comprises a bronze helix arm and the second helix arm (7) comprises a bronze helix arm.
8. An S-band compact quadrifilar helix antenna according to claim 1, characterised in that the outer conductor (2) comprises a brass outer conductor.
9. An S-band compact quadrifilar helix antenna according to claim 1, characterised in that the inner conductor (3) comprises a brass inner conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851061.3U CN210576428U (en) | 2019-10-30 | 2019-10-30 | S-band small four-arm helical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921851061.3U CN210576428U (en) | 2019-10-30 | 2019-10-30 | S-band small four-arm helical antenna |
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| Publication Number | Publication Date |
|---|---|
| CN210576428U true CN210576428U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921851061.3U Active CN210576428U (en) | 2019-10-30 | 2019-10-30 | S-band small four-arm helical antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216949A (en) * | 2020-09-28 | 2021-01-12 | 深圳市禾电迅科技有限公司 | Ceramic four-wall spiral multi-frequency antenna |
-
2019
- 2019-10-30 CN CN201921851061.3U patent/CN210576428U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112216949A (en) * | 2020-09-28 | 2021-01-12 | 深圳市禾电迅科技有限公司 | Ceramic four-wall spiral multi-frequency antenna |
| CN112216949B (en) * | 2020-09-28 | 2024-05-28 | 深圳市禾电迅科技有限公司 | Ceramic four-wall spiral multi-frequency antenna |
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