CN201725865U - High-gain broadband antenna based on impedance matching principle - Google Patents

High-gain broadband antenna based on impedance matching principle Download PDF

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Publication number
CN201725865U
CN201725865U CN200920319249.3U CN200920319249U CN201725865U CN 201725865 U CN201725865 U CN 201725865U CN 200920319249 U CN200920319249 U CN 200920319249U CN 201725865 U CN201725865 U CN 201725865U
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CN
China
Prior art keywords
antenna
radio frequency
impedance matching
impedance
conversion device
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Expired - Lifetime
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CN200920319249.3U
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Chinese (zh)
Inventor
邱扬
刘海宁
李国正
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Xi'an Kairong Electronic Technologies Co Ltd
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Xi'an Kairong Electronic Technologies Co Ltd
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Priority to CN200920319249.3U priority Critical patent/CN201725865U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

本实用新型属于电子测试与测量技术领域,涉及一种基于阻抗匹配原理的高增益宽频带天线,其特征是:它包括圆锥形天线振子、阻抗变换装置、天线馈电回路、天线支杆、N型射频连接器以及螺纹内导体;两个圆锥形天线振子通过端部的螺纹内导体与阻抗变换装置的螺纹孔相连,两个圆锥形天线振子对称分布在阻抗变换装置两侧,阻抗变换装置整体与天线支杆连接;天线馈电回路内置于天线支杆内,N型射频连接器外嵌于天线支杆底端。它适用于电磁场辐射发射的测量,而且也用于辐射敏感度或抗扰度的测量,以及屏蔽室、屏蔽方舱、机柜的屏蔽效能以及大型电子设备和系统的辐射干扰检漏测试。

The utility model belongs to the technical field of electronic testing and measurement, and relates to a high-gain broadband antenna based on the principle of impedance matching. Type RF connector and threaded inner conductor; two conical antenna elements are connected to the threaded holes of the impedance transformation device through the threaded inner conductor at the end, and the two conical antenna elements are symmetrically distributed on both sides of the impedance transformation device. It is connected with the antenna pole; the antenna feed circuit is built in the antenna pole, and the N-type radio frequency connector is embedded in the bottom of the antenna pole. It is suitable for the measurement of electromagnetic field radiation emission, and also for the measurement of radiation sensitivity or immunity, as well as the shielding effectiveness of shielded rooms, shielded shelters, cabinets, and radiation interference leak detection tests for large electronic equipment and systems.

Description

High-gain broadband antenna based on impedance matching principle
Technical field
The utility model belongs to Electronic Testing and field of measuring technique, relates to a kind of high-gain broadband antenna based on impedance matching principle.
Background technology
In the electromagnetic compatibility field, the electric field and the ambient electromagnetic field that leak when being used to receive equipment under test work are especially measured in the frequency range at 30MHz~200MHz, often use biconical antenna.And himself impedance of present employed antenna and test macro can not finely mate, thereby have strengthened self reflection, make its standing-wave ratio very big.This just can't improve the sensitivity that signal receives, and needs a kind of high-gain broadband antenna based on impedance matching principle on the engineering for this reason, the antenna of promptly low standing-wave ratio, high radiated emission efficient.
Summary of the invention
The purpose of this utility model is to provide a kind of high-gain broadband antenna based on impedance matching principle, to be applicable to the measurement of electromagnetic field radiation emission, and be used for the measurement of radiated susceptibility or immunity to interference, and shielded enclosure, shielding shelter, the screening effectiveness of rack and the radiated interference leak detection test of large scale electronic equipment and system.
To achieve these goals, the technical solution of the utility model is: the high-gain broadband antenna based on impedance matching principle is characterized in that: it comprises conical antenna oscillator, impedance conversion device, antenna feed loop, antenna pole, N type radio frequency connector and screw thread inner wire; Two conical antenna oscillators link to each other with the screwed hole of impedance conversion device by the screw thread inner wire of end, and two conical antenna oscillators are symmetrically distributed in the impedance conversion device both sides, and impedance conversion device integral body is connected with antenna pole; The antenna feed loop is built in the antenna pole, and N type radio frequency connector is embedded in antenna pole bottom outward.
Described antenna feed loop is to be made of N type radio frequency connector and radio frequency coaxial-cable and one group of ferrite bead.
Described conical antenna oscillator is made up of six roots of sensation metal cylinder, and is 60 ° of angles mutually and evenly distributes, with strengthen antenna with regard to receptivity.
Described impedance conversion device is to constitute the balance/imbalance converting means by the form concentric spirals inductance, and its effect is that the impedance transition with 120 Ω is 50 Ω, so that antenna impedance and feeder line coupling.
Described antenna feed loop is formed by one 50 Ω coaxial radio frequency cable, and it links to each other with N type radio frequency connector.
The utility model advantage: the utility model relates to a kind of test antenna of calibration test and electromagnetic compatibility radiated interference test macro, and it not only can be used for the measurement of electromagnetic field radiation emission, and can be used for the measurement of radiated susceptibility or immunity to interference.It need not be tuning, for convenience detach, have characteristics such as high-gain, broadband, be fit to cooperate with receiver, thereby the composition Auto-Test System carried out sweep check to system.
Description of drawings
Below in conjunction with the specific embodiment accompanying drawing the utility model is described in detail.
Fig. 1 is based on the high-gain broadband antenna structural representation of impedance matching principle;
Among the figure: 1, conical antenna oscillator; 2, impedance conversion device; 3, antenna feed loop; 4, antenna pole; 5, N type radio frequency connector; 6, screw thread inner wire.
Embodiment
Shown in the structural representation of the high-gain wide frequency antenna of Fig. 1 impedance matching principle, based on the high-gain broadband antenna of impedance matching principle, comprise conical antenna oscillator 1, impedance conversion device 2, antenna feed loop 3, antenna pole 4, N type radio frequency connector 5 and screw thread inner wire 6; Two conical antenna oscillators 1 link to each other with the screwed hole of impedance conversion device 2 by the screw thread inner wire 6 of end, and two conical antenna oscillators 1 are symmetrically distributed in impedance conversion device 2 both sides, and impedance conversion device 2 integral body are connected (welding) with antenna pole 4; Antenna feed loop 3 is built in the antenna pole 4, N type radio frequency connector 5 outer antenna pole 4 bottoms that are embedded in.Antenna feed loop 3 is to be made of N type radio frequency connector 5 and radio frequency coaxial-cable and one group of ferrite bead.Conical antenna oscillator 1 is made up of six roots of sensation metal cylinder, and is 60 ° of angles mutually and evenly distributes, with strengthen antenna with regard to receptivity.Impedance conversion device 2 is to constitute the balance/imbalance converting means by the form concentric spirals inductance, and its effect is that the impedance transition with 120 Ω is 50 Ω, so that antenna impedance and feeder line coupling.Antenna feed loop 3 is formed by one 50 Ω coaxial radio frequency cable, and it links to each other with N type radio frequency connector 5.In the antenna feed loop 3, one group of ferrite bead is fixed on the 50 Ω coaxial radio frequency cables, to eliminate the high-frequency coupling of cable and antenna body, the input impedance that can regulate simultaneously feeding circuit reaches 50 Ω, make the antenna overall impedance reach 50 Ω, with the fine coupling of test macro, reach very little antenna standing wave ratio.

Claims (5)

1. based on the high-gain broadband antenna of impedance matching principle, it is characterized in that: it comprises conical antenna oscillator (1), impedance conversion device (2), antenna feed loop (3), antenna pole (4), N type radio frequency connector (5) and screw thread inner wire (6); Two conical antenna oscillators (1) link to each other with the screwed hole of impedance conversion device (2) by the screw thread inner wire (6) of end, two conical antenna oscillators (1) are symmetrically distributed in impedance conversion device (2) both sides, and impedance conversion device (2) is whole to be connected with antenna pole (4); Antenna feed loop (3) is built in the antenna pole (4), outer antenna pole (4) bottom that is embedded in of N type radio frequency connector (5).
2. the high-gain broadband antenna based on impedance matching principle according to claim 1 is characterized in that: described antenna feed loop (3) is by N type radio frequency connector (5) and radio frequency coaxial-cable and one group of ferrite bead formation.
3. the high-gain broadband antenna based on impedance matching principle according to claim 1 is characterized in that: described conical antenna oscillator (1) is made up of six roots of sensation metal cylinder, and is 60 ° of angles mutually and evenly distributes.
4. the high-gain broadband antenna based on impedance matching principle according to claim 1 is characterized in that: described impedance conversion device (2) is to constitute the balance/imbalance converting means by the form concentric spirals inductance.
5. the high-gain broadband antenna based on impedance matching principle according to claim 1 is characterized in that: described antenna feed loop (3) is formed by one 50 Ω coaxial radio frequency cable, and it links to each other with N type radio frequency connector (5).
CN200920319249.3U 2009-12-31 2009-12-31 High-gain broadband antenna based on impedance matching principle Expired - Lifetime CN201725865U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920319249.3U CN201725865U (en) 2009-12-31 2009-12-31 High-gain broadband antenna based on impedance matching principle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920319249.3U CN201725865U (en) 2009-12-31 2009-12-31 High-gain broadband antenna based on impedance matching principle

Publications (1)

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CN201725865U true CN201725865U (en) 2011-01-26

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CN200920319249.3U Expired - Lifetime CN201725865U (en) 2009-12-31 2009-12-31 High-gain broadband antenna based on impedance matching principle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102955091A (en) * 2012-11-29 2013-03-06 西安开容电子技术有限责任公司 Method for testing and evaluating low frequency shielding efficiency of shielding square cabin under condition of complete cabin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102955091A (en) * 2012-11-29 2013-03-06 西安开容电子技术有限责任公司 Method for testing and evaluating low frequency shielding efficiency of shielding square cabin under condition of complete cabin
CN102955091B (en) * 2012-11-29 2015-10-21 西安开容电子技术有限责任公司 Shielding shelter low frequency shield effectiveness test and evaluation method under the condition of whole cabin

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Granted publication date: 20110126