CN203103499U - Ultra wide band printed antenna - Google Patents

Ultra wide band printed antenna Download PDF

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Publication number
CN203103499U
CN203103499U CN 201220689988 CN201220689988U CN203103499U CN 203103499 U CN203103499 U CN 203103499U CN 201220689988 CN201220689988 CN 201220689988 CN 201220689988 U CN201220689988 U CN 201220689988U CN 203103499 U CN203103499 U CN 203103499U
Authority
CN
China
Prior art keywords
antenna
layer metal
double dipole
dipole antenna
ultra
Prior art date
Application number
CN 201220689988
Other languages
Chinese (zh)
Inventor
周占伟
丁勇飞
徐丁海
朱丽军
刘国梁
Original Assignee
中国航空无线电电子研究所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中国航空无线电电子研究所 filed Critical 中国航空无线电电子研究所
Priority to CN 201220689988 priority Critical patent/CN203103499U/en
Application granted granted Critical
Publication of CN203103499U publication Critical patent/CN203103499U/en

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Abstract

Provided is an ultra wide band printed antenna, comprising an upper layer metal printing double dipole antenna and a lower layer metal printing double dipole antenna, an intermediate feed network and two layers of medium substrates. An upper layer metal and a lower layer metal of the medium substrate are respectively symmetrically photoetched with double dipole antennas with same length, width, thickness, coupling slots and earth plates. A distance of the upper layer metal and the lower layer metal is a center frequency half-wavelength. A microstrip balun and power divider integrated feed network is printed in the middle. A metal baffle-board which is vertical to the substrates, symmetric to the substrates, and is provided with a hole in the center is disposed on an edge of the medium substrate which is on a lower end of the double dipole antenna earth plate. The antenna is easy to integrate with a circuit, and is characterized by ultra wide band, low cross-polarization, low cost, and good performance. The antenna can not only be used independently, but also is an ideal radiating element of low sidelobe or ultra-low sidelobe of a large-scale antenna array.

Description

Ultra-wideband printed antenna

Technical field

The utility model relates to and is used for radio communication receive-transmit system ultra-wideband antenna plane integrated technology, belongs to the wireless communication system antenna technical field.

Background technology

Printed antenna is to paste the antenna that adds conductor sheet and form on the dielectric substrate that has the conductor ground plate.It utilizes little band or coaxial feeding, has encouraged electromagnetic field between conductor patch and ground plate, and by around the paster and the slit between ground plate to external radiation.Printed antenna obtains extensive studies and application owing to section is low, in light weight, volume is little, be convenient to integrated and form advantage such as array.The major defect of printed antenna is that frequency band is narrow, although existing number of ways is come the frequency band of this class antenna of broadening, as increasing substrate thickness, reduces substrate relative dielectric constant etc.But the substrate thickness increase can cause the obvious excitation of surface wave, changes the directivity of antenna; The potentiality that reduce dielectric constant are also very limited, and minimum value is 1, and reduce the increase that dielectric constant is followed the paster area usually.In addition, the additional impedance matching network, adopt the electromagnetic coupled feeding classification, take the little band forms of multilayer, utilize row ripple battle array, logarithm period battle array or adopt the structures such as special shape such as Vivaldi antenna also can widening frequency band, but the broadening of these printed antenna frequency bands be often with the cost that is reduced to of the increase of volume and complexity and efficient.For example, multi-sheet printed antenna structure complexity, manufacture craft is loaded down with trivial details; Though U type groove printed antenna band performance is good, cross polarization is serious, and radiation characteristic is impaired.

At present, can accomplish simultaneously that the printed antenna of ultra broadband, low-cross polarization characteristic is also very rare.

Summary of the invention

At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of integrated, ultra-wideband printed antenna of the double-deck double dipole of miniaturization that is used for the wireless communication system antenna, and this antenna has ultra broadband, low-cross polarization characteristic.

The technical scheme that realizes the present utility model purpose is:

The ultra-wideband printed antenna of this novel double-layer double dipole is by double layer of metal printing double dipole antenna, centre feed network and two layer medium substrate are formed up and down.This antenna is at the double layer of metal up and down of dielectric substrate symmetrical photoetching length and width, thick, coupling slot and all identical double dipole antenna of ground plate respectively, and unit interval is the centre frequency half-wavelength; Middle printed microstrip Ba Lun and the incorporate feeding network of power splitter; On the dielectric substrate edge of double dipole antenna ground plate lower end, be provided with one perpendicular to substrate and about the metallic reflection plate of the center drilling of substrate symmetry.

Beneficial effect of the present invention:

1. special type: the BW>50%(VSWR of ultra broadband<2.0).

This novel double-layer double dipole beamwidth of antenna is much wideer than common printed antenna bandwidth.Common printed antenna frequency band is very narrow only 1~5%; On identical dielectric substrate, the bandwidth of this bilayer double dipole antenna is 5 times of common printed dipole antenna bandwidth, and the bandwidth of common printed dipole antenna is about 10%, and the bandwidth of this bilayer double dipole antenna can reach more than 50%.

2. the special type of low-cross polarization: cross polarization level<-45dB.

This novel double-layer double dipole antenna is because adopt symmetrical structure, and two-layer cross-polarized electric field component is cancelled out each other about making, and has reduced the cross polarization level of antenna, has the low-cross polarization characteristic.Common printed antenna cross-polarization level is-10dB~-20dB, the cross polarization level of individual layer printed dipole sub antenna is-25dB about, and be better than-40dB with this bilayer double dipole antenna cross-polarization level of spline structure.

3. simple in structure, consistency of performance is good, and impedance matching is easy, and debugging is convenient, and integrated feeding network is suitable for making with the antenna array structure, is easy to print production in batches, and cost is low, and is economical and practical.

This new antenna is the planographic structure, is easy to circuit integratedly, and has ultra broadband, low-cross polarization characteristic, and cost is low, and performance is good, not only can use separately, also is a kind of ideal radiation unit of large-scale antenna battle array Low Sidelobe or ultralow secondary lobe.

Description of drawings

Fig. 1 is the general structure schematic diagram of the utility model antenna.

Fig. 2 is the cutaway view of Fig. 1.

Fig. 3 is the end view of Fig. 1.

The number in the figure explanation

1-dipole antenna, 2-feed Ba Lun, 3-power splitter, 4-coupling slot

5-ground plate, 6-metallic reflection plate, 7-dielectric substrate

Embodiment

How further specify the utility model below in conjunction with accompanying drawing 1~Fig. 3 realizes.

Embodiment

Adopt the manufacture craft of the two-sided printed substrate of multilayer, the lower metal layer symmetry is made dipole antenna 1, coupling slot 4 and ground plate 5 on dielectric substrate 7, makes feed Ba Lun 2 and power splitter 3 at intermediate metal layer; Then, on edge below the dielectric substrate 7, establish one perpendicular to dielectric substrate 7 and about the metallic reflection plate 6 of dielectric substrate 7 symmetries, and establish a through hole at the center of this metallic reflection plate 6, the feeder line of being convenient to antenna is drawn, and so promptly can be made into this novel ultra-wideband printed antenna.With the centre frequency is that 3.25GHz Phased Array Radar Antenna unit is an example, and selected antenna unit structure parameters is:

Substrate dielectric constant: 2.2; Substrate thickness: 0.78mm;

Dielectric substrate size: 92mm * 40mm;

Dipole antenna: length 18mm, width W=5mm;

Dipole antenna spacing: 46mm; The coupling slot degree of depth: 13mm, width 1mm;

Feed Ba Lun live width: 2mm;

Metallic reflection board size: 92mm * 60mm;

Test result

It is as follows to record this new antenna unit performance at microwave dark room:

Bandwidth: BW=55%, (2.68GHz~4.71GHz, VSWR<2);

Cross polarization level :-46dB; Gain: 9.6dBi;

E ground roll beam width is 42 degree, and H ground roll beam width is 104 degree.

In the present embodiment, utilize the typical media substrate, need not special material, adopt the ripe manufacture craft of the two-sided printed substrate of multilayer, program is simple, and is with low cost.Test result meets this new antenna ultra broadband, low-cross polarization characteristic.

More than, only provide description of the invention, so that their easy to understand and utilization the present invention to those skilled in the art that.For those skilled in the art that, be conspicuous to the various changes of embodiment, and need not performing creative labour.

Claims (2)

1. ultra-wideband printed antenna, by double layer of metal printing double dipole antenna, centre feed network and two layer medium substrate are formed up and down, it is characterized in that: the double layer of metal up and down of dielectric substrate respectively symmetrical beam be carved with length and width, thick, coupling slot and all identical double dipole antenna of ground plate, intermediate metal layer is manufactured with feed Ba Lun and the incorporate feeding network of power splitter; On the dielectric substrate edge of double dipole antenna ground plate lower end, be provided with one perpendicular to substrate and about the metallic reflection plate of the center drilling of substrate symmetry.
2. a kind of ultra-wideband printed antenna according to claim 1 is characterized in that: the unit interval of described double dipole antenna is the centre frequency half-wavelength.
CN 201220689988 2012-12-13 2012-12-13 Ultra wide band printed antenna CN203103499U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220689988 CN203103499U (en) 2012-12-13 2012-12-13 Ultra wide band printed antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220689988 CN203103499U (en) 2012-12-13 2012-12-13 Ultra wide band printed antenna

Publications (1)

Publication Number Publication Date
CN203103499U true CN203103499U (en) 2013-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220689988 CN203103499U (en) 2012-12-13 2012-12-13 Ultra wide band printed antenna

Country Status (1)

Country Link
CN (1) CN203103499U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103414017A (en) * 2013-08-23 2013-11-27 电子科技大学 Double dipole directional antenna based on same-phase power divider feeding
CN103825091A (en) * 2014-03-19 2014-05-28 电子科技大学 Ultra-wideband beam antenna
CN104505586A (en) * 2014-12-12 2015-04-08 上海大学 Dual-frequency screen-printed triangular gap array antenna
CN105305076A (en) * 2015-11-30 2016-02-03 上海航天测控通信研究所 Antenna structure integrated with monitoring network
CN106104920A (en) * 2014-03-26 2016-11-09 莱尔德技术股份有限公司 Antenna module
CN107623181A (en) * 2017-08-15 2018-01-23 中国人民解放军空军工程大学 A kind of broadband low-cross polarization Antipodal Vivaldi antennas
US9972886B2 (en) 2014-03-26 2018-05-15 Laird Technologies, Inc. Antenna assemblies

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103414017A (en) * 2013-08-23 2013-11-27 电子科技大学 Double dipole directional antenna based on same-phase power divider feeding
CN103414017B (en) * 2013-08-23 2015-09-09 电子科技大学 Based on the double dipole directional antenna of homophase power splitter feed
CN103825091A (en) * 2014-03-19 2014-05-28 电子科技大学 Ultra-wideband beam antenna
CN103825091B (en) * 2014-03-19 2016-08-10 电子科技大学 Ultra broadband beam antenna
US9972886B2 (en) 2014-03-26 2018-05-15 Laird Technologies, Inc. Antenna assemblies
CN106104920A (en) * 2014-03-26 2016-11-09 莱尔德技术股份有限公司 Antenna module
CN106104920B (en) * 2014-03-26 2018-03-23 莱尔德无线技术(上海)有限公司 Antenna module
CN104505586A (en) * 2014-12-12 2015-04-08 上海大学 Dual-frequency screen-printed triangular gap array antenna
CN104505586B (en) * 2014-12-12 2017-07-25 上海大学 A kind of double frequency plane prints triangle slot array antenna
CN105305076A (en) * 2015-11-30 2016-02-03 上海航天测控通信研究所 Antenna structure integrated with monitoring network
CN105305076B (en) * 2015-11-30 2018-10-12 上海航天测控通信研究所 The antenna structure of integrated monitor network
CN107623181A (en) * 2017-08-15 2018-01-23 中国人民解放军空军工程大学 A kind of broadband low-cross polarization Antipodal Vivaldi antennas

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