CN208723088U

CN208723088U - A kind of spiral high-precision antenna

Info

Publication number: CN208723088U
Application number: CN201821299245.9U
Authority: CN
Inventors: 吴家俊
Original assignee: Shenzhen Tiandi Star Union Communication Technology Co Ltd
Current assignee: Shenzhen Tiandi Star Union Communication Technology Co Ltd
Priority date: 2018-08-13
Filing date: 2018-08-13
Publication date: 2019-04-09
Anticipated expiration: 2028-08-13

Abstract

The utility model discloses a kind of spiral high-precision antennas, including pcb board, the pcb board upper center is equipped with antenna dielectric body, it is aerial radiation face on the outside of antenna dielectric body, four groups of radiators are equipped on the outside of aerial radiation face, every group of radiator includes two high-frequency short arm helical antennas and the long arm helical antenna of low frequency, and aerial radiation face bottom end is electrically connected with 4 feeding points.The utility model, it is structurally reasonable, it is novel in design, the FPC scheme of four arm spirals is on the one hand used, the weight of integrated antenna is reduced；On the other hand, due to using four-arm spiral antenna form, antenna realizes antenna height radio-frequency radiation, the lobe width of antenna broadens, and ensure that receipts star effect in the presence of a harsh environment by intercoupling between low-and high-frequency two-arm.

Description

A kind of spiral high-precision antenna

Technical field

The utility model relates to satellite communication and mobile communication field, specifically a kind of spiral high-precision antenna.

Background technique

Technique of Satellite Navigation and Positioning is at present substantially instead of ground based radio navigation, traditional geodesic survey and astronomical surveing Navigator fix technology, and pushed the completely new development of geodesic survey Yu navigator fix field.

Now, GNSS system is not only national security and economic infrastructure, and embody modernization big country status and The important symbol of national overall national strength.Due to its politics, economy, in terms of have great importance, main army, the world Thing big country and economy are all competitively developing independent satellite navigation system.

On April 14th, 2007, China have succeeded in sending up first big-dipper satellite, indicate the 4th GNSS system in the world Into the substantive running stage, GPS of America, Russian GLONASS, European Union GALILEO and Chinese Beidou before the year two thousand twenty are estimated Modernization restructuring will be built up or be completed to the big GNSS system of satellite navigation system etc. 4.

Currently, traditional high-precision satellite antenna generally uses microstrip antenna form, size is bigger, and weight ratio is heavier, And be generally used for above vehicle-mounted, it is not used on the Miniature Terminals such as hand-held, unmanned plane.

Utility model content

The purpose of this utility model is to provide a kind of spiral high-precision antennas, to solve to propose in above-mentioned background technique The problem of.

To achieve the above object, the utility model provides the following technical solutions:

A kind of spiral high-precision antenna, including pcb board, the pcb board upper center are equipped with antenna dielectric body, antenna It is aerial radiation face on the outside of dielectric, four groups of radiators is equipped on the outside of aerial radiation face, every group of radiator includes that two high frequencies are short Arm helical antenna and the long arm helical antenna of low frequency, aerial radiation face bottom end are electrically connected with 4 feeding points.

As a further solution of the present invention: the antenna dielectric body is made of FPC material.

As a further solution of the present invention: the feeding point is identical apart from aerial radiation face center spacing.

The high-frequency short arm helical antenna and the long arm helical antenna of low frequency are equal as a further solution of the present invention, For quarter-wave length.

Compared with prior art, the utility model has the beneficial effects that

A kind of spiral high-precision antenna, it is structurally reasonable, it is novel in design, on the one hand using four-arm spiral antenna FPC scheme reduces the weight of integrated antenna；On the other hand, due to using four-arm spiral antenna form, antenna passes through low-and high-frequency Intercoupling between two-arm, realizes antenna height radio-frequency radiation, and the lobe width of antenna broadens, ensure that in the presence of a harsh environment Receipts star effect.

Detailed description of the invention

Fig. 1 is a kind of positive structure schematic of spiral high-precision antenna.

Fig. 2 is a kind of directional diagram that spiral high-precision antenna is radiated in low frequency band.

Fig. 3 is a kind of directional diagram that spiral high-precision antenna is radiated in high-frequency band.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result, Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another It is described, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition State the concrete meaning of term in the present invention.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Refering to fig. 1, in the utility model embodiment, a kind of spiral high-precision antenna, including pcb board 5, the pcb board 5 Upper center is equipped with antenna dielectric body 1, and the antenna dielectric body 1 is made of FPC material, is antenna on the outside of antenna dielectric body 1 Radiating surface 2, is equipped with four groups of radiators on the outside of aerial radiation face 2, and every group of radiator includes two high-frequency short arm helical antennas 4 and low Frequently long arm helical antenna 3, the high-frequency short arm helical antenna 4 and the long arm helical antenna 3 of low frequency are quarter-wave length Degree, 2 bottom end of aerial radiation face are electrically connected with 4 feeding points 6, and the feeding point 6 is apart from 2 center spacing of aerial radiation face It is identical.

Refering to Fig. 2 and Fig. 3, in actual emulation, 2 outer diameter 25mm of aerial radiation face, height 64mm, 1 thickness of antenna dielectric body Spend 0.04mm, the high 60mm of high-frequency short arm helical antenna, the long arm helical antenna of low frequency high 51mm, slope 50deg, low-frequency gain energy Reach 5dB or more, the general 4.5dB of high-frequency gain fully meets the performance indicator of high-precision satellite antenna.

Antenna dielectric body 1 described in the utility model is using cylinder, and using FPC material, the aerial radiation face has 4 groups Radiator, every group of radiator includes two high-frequency short arm helical antennas 4 and the long arm helical antenna 3 of low frequency, is all wound on antenna medium 1 material surface of body, aerial radiation face 2 use four-arm spiral antenna form, and four feeding points 6 motivate high and low frequency two simultaneously Frequency range, four feeding points 6 of bottom direct feed, spacing is equal, and the amplitude of excitation is equal, and the phase of excitation successively differs 90 °, The high-frequency short arm helical antenna 4 and the long arm helical antenna 3 of low frequency are quarter-wave length, therefore directional diagram lobe Width is wider, and antenna realizes day by intercoupling between frequency galianconism helical antenna 4 and the long arm helical antenna 3 of low frequency Line height radio-frequency radiation, the antenna of more feeding points of more common micro-strip form, largely reduces antenna volume.

Antenna described in the utility model passes through the phase between high-frequency short arm helical antenna 4 and the long arm helical antenna 3 of low frequency Mutual coupling, realizes antenna height radio-frequency radiation, and the antenna of more feeding points of more common micro-strip form largely reduces Antenna volume.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims

1. a kind of spiral high-precision antenna, including pcb board (5), which is characterized in that pcb board (5) upper center is equipped with Antenna dielectric body (1), antenna dielectric body (1) outside are aerial radiation face (2), and four groups of radiation are equipped on the outside of aerial radiation face (2) Body, every group of radiator include two high-frequency short arm helical antennas (4) and the long arm helical antenna of low frequency (3), the aerial radiation face (2) bottom end is electrically connected with 4 feeding points (6).

2. a kind of spiral high-precision antenna according to claim 1, which is characterized in that the antenna dielectric body (1) is FPC material is made.

3. a kind of spiral high-precision antenna according to claim 2, which is characterized in that the feeding point (6) is apart from day Beta radiation face (2) center spacing is identical.

4. a kind of spiral high-precision antenna according to claim 1 to 3, which is characterized in that the high frequency is short Arm helical antenna (4) and the long arm helical antenna of low frequency (3) are quarter-wave length.