CN106299705A - A kind of planar broad band filter antenna - Google Patents

A kind of planar broad band filter antenna Download PDF

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Publication number
CN106299705A
CN106299705A CN201610913535.7A CN201610913535A CN106299705A CN 106299705 A CN106299705 A CN 106299705A CN 201610913535 A CN201610913535 A CN 201610913535A CN 106299705 A CN106299705 A CN 106299705A
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line
micro
transmission line
microstrip transmission
oscillator arms
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CN201610913535.7A
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Chinese (zh)
Inventor
尹航
王道雨
汪敏
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Priority to CN201610913535.7A priority Critical patent/CN106299705A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50Feeding or matching arrangements for broad-band or multi-band operation

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  • Waveguide Aerials (AREA)

Abstract

The open a kind of planar broad band filter antenna of the present invention, Rectangular Enclosure with Participating Media substrate (1) including lower surface metal clad earth plate (2), upper surface at described medium substrate (1) is provided with metal patch (3) and feed mouth (4), described feed mouth (4) is placed on a narrow limit of medium substrate (1), metal patch (3) is placed in medium substrate (1), metal patch (3) is connected with feed mouth (4), and described metal patch (3) is connected with metal ground plate (2) by plated-through hole (5).The planar broad band filter antenna of the present invention, simple in construction, broader bandwidth, gain is higher, can realize filtering and directed radiation simultaneously.

Description

A kind of planar broad band filter antenna
Technical field
The invention belongs to radio antenna technical field, particularly a kind of simple in construction, broader bandwidth, gain is higher, Realize filtering and the planar broad band filter antenna of directed radiation.
Background technology
The radio-frequency front-end of radio communication is respectively equipped with antenna and wave filter, antenna and wave filter and is connected by matching network. In order to meet Modern communications terminals miniature requirement, need to antenna be carried out integrated with wave filter, constitute and there is radiation and filter simultaneously The single device of wave energy, i.e. filter antenna (filtering antenna, filtenna).
Currently, the main design thought of filter antenna can be summarized as two kinds: one is cascade filtering structure in antennas, makes Antenna has filtering characteristic.Another kind is that wave filter and antenna are carried out comprehensive Design, from the comprehensive reason of classical band filter Opinion is set out, and antenna equivalence becomes the rlc circuit of serial or parallel connection, is rising while radiation effects, also function as wave filter last Level resonator and load.
But, said method the most inevitably increases the physical dimension of antenna so that the complexity of antenna increases, It is not easy to processing and uses;The most also being easy to increase loss, the gain causing antenna is the highest or unstable, and bandwidth is relatively Narrow, apply limited.
Summary of the invention
It is an object of the invention to provide a kind of planar broad band filter antenna, simple in construction, broader bandwidth, gain is higher, Filtering and directed radiation can be realized simultaneously.
The technical solution realizing the object of the invention is:
A kind of planar broad band filter antenna, including the Rectangular Enclosure with Participating Media substrate of lower surface metal clad earth plate, is being given an account of The upper surface of matter substrate is provided with metal patch and feed mouth, and described feed mouth is placed on a narrow limit of medium substrate, and metal pastes Sheet is placed in medium substrate, and metal patch is connected with feed mouth, and described metal patch passes through plated-through hole and metal ground plate It is connected.
Compared with prior art, its remarkable advantage is the present invention:
1, simple in construction: connect upper strata oscillator and lower floor's reflector by metal throuth hole, broken away from double layer design, it is not necessary to single Solely design balun, reduce antenna size and design complexities, more with practical value.By adding on 50 ohm microstrip transmission lines Load compacts micro-band resonance unit to realize filtering, the most effectively, compact conformation, it is achieved that miniaturization.
2, broader bandwidth: the present invention abandons tradition balun, uses metal throuth hole feed and microstrip line direct feed, to realize Differential feed, solves the problem that traditional antenna frequency band is narrow,
3, gain is higher, it is achieved filtering and directed radiation: uses yagi aerial as radiating element, has gain relatively Height, the feature of one-way radiation.
The present invention is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of planar broad band filter antenna one embodiment of the present invention.
Fig. 2 is the structural representation of planar broad band another embodiment of filter antenna of the present invention.
Fig. 3 is the structural representation of micro-band resonance unit of compacting in Fig. 2.
Fig. 4 is the physical dimension exemplary plot of planar broad band filter antenna shown in Fig. 2.
Fig. 5 is the physical dimension exemplary plot of micro-band resonance unit of compacting in Fig. 3.
Fig. 6 is the HFSS emulation S11 figure of planar broad band filter antenna shown in Fig. 1.
Fig. 7 is the HFSS emulation S11 figure of planar broad band filter antenna shown in Fig. 2.
Fig. 8 is the simulated radiation gain diagram at 7.5GHz of the planar broad band filter antenna shown in Fig. 2.
Fig. 9 is the electric current distribution diagram under 3.2GHz frequency of the planar broad band filter antenna shown in Fig. 2.
Figure 10 is the electric current distribution diagram under 7.5GHz frequency of the planar broad band filter antenna shown in Fig. 2.
In figure, medium substrate 1, metal ground plate 2, metal patch 3, feed mouth 4, plated-through hole 5,
First microstrip transmission line 31, the second microstrip transmission line 32, the 3rd microstrip transmission line 33, the first oscillator arms 34, second Oscillator arms 35, the first director 36, the second director 37,
Compact micro-band resonance unit 6, the first transversely narrow band wire 61, the second transversely narrow band wire 62, the 3rd transversely narrow band wire 63, Longitudinal narrowband line 64, micro-strip right angled triangle 65,66,67,68,
Reflector 21, feeding microstrip line 22.
Detailed description of the invention
As it is shown in figure 1, planar broad band filter antenna of the present invention, including the Rectangular Enclosure with Participating Media of lower surface metal clad earth plate 2 Substrate 1, the upper surface at described medium substrate 1 is provided with metal patch 3 and feed mouth 4, and described feed mouth 4 is placed in medium substrate 1 A narrow limit on, metal patch 3 is placed in medium substrate 1, and metal patch 3 is connected with feed mouth 4, and described metal patch 3 is logical Cross plated-through hole 5 to be connected with metal ground plate 2.
As it is shown in figure 1, described metal patch 3 includes first microstrip transmission line the 31, second microstrip transmission line the 32, the 3rd micro-strip Transmission line the 33, first oscillator arms the 34, second oscillator arms the 35, first director 36 and the second director 37;
The width of described second microstrip transmission line 32 is more than the width of the first microstrip transmission line 31, less than the 3rd micro-strip transmission The width of line 33, one end of described second microstrip transmission line 32 is connected with one end of the first microstrip transmission line 31, the other end and One end of the width of three microstrip transmission lines 33 is connected, and the other end of the first microstrip transmission line 31 is connected with feed mouth 4.
Described feed mouth 4, compact micro-band resonance unit the 6, first microstrip transmission line the 31, second microstrip transmission line the 32, the 3rd Microstrip transmission line 33 is along the long axis longitudinal arrangement successively of Rectangular Enclosure with Participating Media substrate 1 upper surface.
Described first oscillator arms 34 and the second oscillator arms 35 are the most L-shaped, and the first oscillator arms 34 and the second oscillator arms 35 are along square The long axis of shape medium substrate 1 upper surface is arranged symmetrically with, and its one end is respectively placed on two broadsides of medium substrate 1, and second shakes The other end plated-through hole 5 of sub-arm 35 is connected with metal ground plate 2, the other end of the first oscillator arms 34 and the transmission of the 3rd micro-strip The other end of line 33 is connected, and is provided with gap between the first oscillator arms 34 and the second oscillator arms 35.
Described first director 36 is placed on medium substrate 1 another narrow limit relative with feed mouth 4, and puts down with this narrow limit OK, the second director 37 is parallel with the first director 36, is placed between the first director 36 and the first oscillator arms 34, and first guides into The midpoint of device 36 and the second director 37 is respectively positioned on the long axis of Rectangular Enclosure with Participating Media substrate 1 upper surface.
Described first oscillator arms 34 and the second oscillator arms 35 are the most L-shaped, have employed bending form, to realize miniaturization;
Described oscillator arms 34,35 have employed different feeding classifications, and oscillator arms 34 is microstrip transmission line direct feed, oscillator Arm 35 utilizes plated-through hole to feed, and forms 180 degree of phase contrasts with oscillator arms 35, it is achieved thereby that microstrip line is to coplanar strip The conversion of shape line.
In described metal patch 3 36,37 are yagi aerial director, and the length of 36,37 is less than 1/2 mid frequency medium Wavelength, 36,37 pairs of antenna gains have considerable influence.
The impedance of described power feed inputs mouth 4 is 50 ohm, and the characteristic impedance of described microstrip transmission line 31 is 50 ohm.
In described metal patch 3 36,37 are yagi aerial director, and the length of 36,37 is less than 1/2 mid frequency medium Wavelength, 36,37 pairs of antenna gains have considerable influence.
As shown in Figure 2,4, described first microstrip transmission line 31 is etched formation one and compacts micro-band resonance unit 6, described tightly Cause first transversely narrow band wire the 61, second transversely narrow band wire of transversely narrow band wire the 62, the 3rd that micro-band resonance unit 6 includes being parallel to each other 63 and longitudinal narrowband line 64 normal thereto and four micro-strip right angled triangles 65,66,67,68, described first transversely narrow band wire The midpoint of 61 is connected with one end of longitudinal narrowband line 64, the midpoint of the 3rd transversely narrow band wire 63 and the other end of longitudinal narrowband line 64 Being connected, the midpoint of the second transversely narrow band wire 62 is connected with the midpoint of longitudinal narrowband line 64;
The first transversely narrow band wire 61, second that described first micro-strip right angled triangle 65 is positioned at longitudinal narrowband line 64 side is horizontal Between narrowband line 62, one right-angle side is parallel with longitudinal narrowband line 64 and away from longitudinal narrowband line 64, its another right angle While parallel and close to the first transversely narrow band wire 61, it is away from the top of the first transversely narrow band wire 61 and the second transversely narrow band wire 62 Outer end is connected, and all there is gap between the first micro-strip right angled triangle 65 and the first transversely narrow band wire 61, longitudinal narrowband line 64;
Described second micro-strip right angled triangle 66 and the first micro-strip right angled triangle 65 are symmetrical about longitudinal narrowband line 64, the Three micro-strip right angled triangles 67 and the first micro-strip right angled triangle 65 are symmetrical about the second transversely narrow band wire 62, the 4th micro-strip right angle Triangle 68 and the 3rd micro-strip right angled triangle 67 are symmetrical about longitudinal narrowband line 64.
The described micro-band resonance unit CMRC6 that compacts, for symmetrical structure up and down, is symmetrical two-port network structure.
The micro-band resonance unit CMRC6 that compacts described in as it is shown on figure 3, is symmetrical structure up and down, is symmetrical Two-port netwerk net Network structure.
The micro-band resonance unit 6 that compacts described in as it is shown on figure 3, is a kind of by micro-strip lithography corrosion technology, in standard 50 Europe The special microstrip circuit structure of the special pattern formed in nurse microstrip transmission line 31, due in normal 50 ohm microstrip 31 Having etched away a part of metal, the narrower microstrip line being connected up and down of formation will increase the series inductance of its equivalence.On the contrary, erosion Two gaps carved then add its equivalent parallel electric capacity, so the micro-band resonance unit 6 that compacts can be equivalent to RLC resonance electricity Road, presents band-stop response.By the size of gap s1, s2, s3 in regulation length lc of unit and etched figure, then may be used To obtain Slow-wave effect in different frequency ranges.
Preferably, the characteristic impedance of described first microstrip transmission line 31 is 50 ohm.
As shown in Figure 1, 2, described metal ground plate 2 is positioned at the lower surface of Rectangular Enclosure with Participating Media substrate 1, including square reflector 21 With rectangle feeding microstrip line 22, square reflector 21 and rectangle feeding microstrip line 22 are along the major axis of Rectangular Enclosure with Participating Media substrate 1 lower surface Line longitudinal arrangement successively, and its midpoint is respectively positioned on the long axis of Rectangular Enclosure with Participating Media substrate 1 lower surface;
One end of square reflector 21 is connected with the narrow limit at feed mouth 4 place, its a length of three sections of microstrip transmission lines 31, 32, the total length of 33, width is identical with the width of medium substrate 1, and the other end is connected with rectangle feeding microstrip line 22, and rectangle is presented The length of electricity microstrip line 22 is more than the upper edge distance to square reflector 21 of plated-through hole 5, and less than in oscillator arms 34 Being parallel to the length of the part of lower surface long axis, width is slightly less than the width of microstrip line 33, and feeding microstrip line 22 passes through metal Change through hole 5 to be connected with oscillator arms 35.
In metal patch 3 35 are connected with 22 in metal ground plate 2 by described plated-through hole 5 through medium substrate 1 Connect.
The present invention utilizes the mode loading the micro-band resonance unit that compacts on micro-strip Quasi-Yagi antenna to realize filtering, and radiation is single Unit uses micro-strip Quasi-Yagi antenna to obtain directional radiation properties, utilizes special feed structure to realize broadband character, thus End form becomes a planar broad band filter antenna.
Below in conjunction with instantiation, the present invention is described in further detail.
Embodiment 1:
A kind of planar broad band filter antenna structure as in figure 2 it is shown, relevant dimensions as shown in Figure 4, the medium used Plate is the FR4 sheet material of dielectric constant 4.4, thickness 0.8mm.In conjunction with Fig. 2 and Fig. 4, the key dimension of this planar broad band filter antenna Parameter is as follows: W=25mm, L=39mm, w1=1.5mm, d1=4.5mm, w2=2.6mm, d2=5mm, w3=4.5mm, d3= 4.5mm, w4=3.5mm, d4=8.5mm, w5=2mm, d5=5.8mm, w6=2mm, d6=3mm, w7=4mm, d7=3mm, l 1=10mm, l2=9mm, l3=8mm, g=1mm, r=0.4mm, lc=4mm, wc1=0.2mm, wc2=0.2mm, wc3= 0.2mm, s1=0.2mm, s2=0.2mm, s3=0.1mm.
This example flat wideband filtered antenna modeling and simulating in electromagnetic simulation software HFSS.11.Fig. 7 is this example In reflection coefficient analogous diagram, it can be seen from figure 7 that the bandwidth of antenna can cover the frequency band of 5.6~9.1GHz, impedance bandwidth Being 46.7%, bandwidth significantly increases compared with general paster antenna.
For the micro-strip Quasi-Yagi antenna without the micro-band resonance unit (CMRC) that compacts, Fig. 6 is its reflection coefficient analogous diagram.From It can be seen that the bandwidth of antenna can cover the frequency band of 5.8~9.2GHz in Fig. 6, at 3.2GHz, there is an obvious resonance point, And this resonance point can introduce clutter and reduce radiation efficiency.
Comparison diagram 6 and Fig. 7, it can be seen that the micro-band resonance unit 6 that compacts to micro-strip Quasi-Yagi antenna at about 3.2GHz Clutter has obvious inhibition, it is achieved that the effect of filtering.Meanwhile, the micro-band resonance unit 6 that compacts changes the most to a certain extent It is apt to the beamwidth of antenna.
It can be seen that compact, micro-band resonance unit 6 the most additionally increases antenna size, compact conformation, it is achieved that miniaturization.
As shown in Figure 9 and Figure 10, the planar broad band filter antenna the most of the present invention electricity under 3.2GHz, 7.5GHz frequency Flow point figure, it can be seen that the micro-band resonance unit that compacts at 3.2GHz has obvious inhibitory action for electric current, thus plays The effect of filtering.
Antenna pattern about center of antenna frequency 7.5GHz is as shown in Figure 8.From figure 8, it is seen that at mid frequency The maximum gain locating planar broad band filter antenna of the present invention is 4.3dB, can obtain good orientation spoke at Theat=90 ° Penetrate performance.
In sum, one of the present invention loads the planar broad band filter antenna of the micro-band resonance unit (CMRC) that compacts, and uses Micro-strip Quasi-Yagi antenna, to obtain directional radiation properties, utilizes special feed structure to realize broadband character, by 50 ohm The mode loading the micro-band resonance unit that compacts on microstrip line realizes filtering, thus ultimately forms a planar broad band filtering sky Line, has that simple in construction, production cost be low, filter antenna with the characteristic such as wide, miniaturization, directed radiation, is highly suitable for Modern wireless communication systems.

Claims (5)

1. a planar broad band filter antenna, it is characterised in that:
Including the Rectangular Enclosure with Participating Media substrate (1) of lower surface metal clad earth plate (2), the upper surface at described medium substrate (1) sets Having metal patch (3) and feed mouth (4), described feed mouth (4) is placed on a narrow limit of medium substrate (1), metal patch (3) Being placed in medium substrate (1), metal patch (3) is connected with feed mouth (4), and described metal patch (3) passes through plated-through hole (5) It is connected with metal ground plate (2).
Filter antenna the most according to claim 1, it is characterised in that:
Described metal patch (3) includes the first microstrip transmission line (31), the second microstrip transmission line (32), the 3rd microstrip transmission line (33), the first oscillator arms (34), the second oscillator arms (35), the first director (36) and the second director (37);
The width of described second microstrip transmission line (32) is more than the width of the first microstrip transmission line (31), less than the 3rd micro-strip transmission The width of line (33), one end of described second microstrip transmission line (32) is connected with one end of the first microstrip transmission line (31), another End is connected with one end of the width of the 3rd microstrip transmission line (33), the other end of the first microstrip transmission line (31) and feed mouth (4) It is connected;
Described feed mouth (4), the first microstrip transmission line (31), the second microstrip transmission line (32), the 3rd microstrip transmission line (33) edge The long axis longitudinal arrangement successively of Rectangular Enclosure with Participating Media substrate (1) upper surface;
Described first oscillator arms (34) and the second oscillator arms (35) are the most L-shaped, the first oscillator arms (34) and the second oscillator arms (35) Long axis along Rectangular Enclosure with Participating Media substrate (1) upper surface is arranged symmetrically with, and its one end is respectively placed in two broadsides of medium substrate (1) On, the other end of the second oscillator arms (35) is connected with metal ground plate (2) by plated-through hole (5), the first oscillator arms (34) The other end and the 3rd microstrip transmission line (33) the other end be connected, set between the first oscillator arms (34) and the second oscillator arms (35) There is gap;
Described first director (36) is placed in upper another the narrow limit relative with feed mouth (4) of medium substrate (1), and puts down with this narrow limit OK, the second director (37) is parallel with the first director (36), is placed between the first director (36) and the first oscillator arms (34), The midpoint of the first director (36) and the second director (37) is respectively positioned on the long axis of Rectangular Enclosure with Participating Media substrate (1) upper surface.
Filter antenna the most according to claim 2, it is characterised in that:
Described first microstrip transmission line (31) is etched formation one and compacts micro-band resonance unit (6), described in compact micro-band resonance list The first transversely narrow band wire (61) that unit (6) includes being parallel to each other, the second transversely narrow band wire (62), the 3rd transversely narrow band wire (63) and Longitudinal narrowband line (64) normal thereto and four micro-strip right angled triangles (65,66,67,68), described first transversely narrow band wire (61) midpoint is connected with one end of longitudinal narrowband line (64), the midpoint of the 3rd transversely narrow band wire (63) and longitudinal narrowband line (64) The other end be connected, the midpoint of the second transversely narrow band wire (62) with longitudinal direction narrowband line (64) midpoint be connected;
Described first micro-strip right angled triangle (65) be positioned at the first transversely narrow band wire (61) of longitudinal narrowband line (64) side, second Between transversely narrow band wire (62), one right-angle side is parallel with longitudinal narrowband line (64) and away from longitudinal narrowband line (64), and it is another One right-angle side is parallel and close to the first transversely narrow band wire (61), and it is horizontal with second away from the top of the first transversely narrow band wire (61) It is connected to the outer end of narrowband line (62), the first micro-strip right angled triangle (63) and the first transversely narrow band wire (61), longitudinal narrowband line (64) all there is gap between;
Described second micro-strip right angled triangle (66) and the first micro-strip right angled triangle (65) are symmetrical about longitudinal narrowband line (64), 3rd micro-strip right angled triangle (67) and the first micro-strip right angled triangle (65) are symmetrical about the second transversely narrow band wire (62), and the 4th Micro-strip right angled triangle (68) and the 3rd micro-strip right angled triangle (67) are symmetrical about longitudinal narrowband line (64).
Filter antenna the most according to claim 2, it is characterised in that: the characteristic impedance of described first microstrip transmission line (31) It it is 50 ohm.
Filter antenna the most according to claim 2, it is characterised in that:
Described metal ground plate (2) includes square reflector (21) and rectangle feeding microstrip line (22), square reflector (21) with Rectangle feeding microstrip line (22) is along the long axis longitudinal arrangement successively of Rectangular Enclosure with Participating Media substrate (1) lower surface, and its midpoint is respectively positioned on On the long axis of Rectangular Enclosure with Participating Media substrate (1) lower surface;
One end of square reflector (21) is connected with the narrow limit at feed mouth (4) place, its a length of three sections of microstrip transmission lines (31, 32,33) total length, width is identical with the width of medium substrate (1), and the other end is connected with rectangle feeding microstrip line (22), The length of rectangle feeding microstrip line (22) is more than the upper edge distance to square reflector (21) of plated-through hole (5), and little Being parallel to the length of the part of lower surface long axis in oscillator arms (34), its width is slightly less than the width of microstrip line (33), feedback Electricity microstrip line (22) is connected with oscillator arms (35) by plated-through hole (5).
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CN106898869A (en) * 2017-03-22 2017-06-27 中国人民解放军国防科学技术大学 High-gain directed radiation medium resonator antenna
CN110085989A (en) * 2019-05-05 2019-08-02 南京邮电大学 A kind of Yagi spark gap leaky-wave antenna based on artificial surface phasmon
CN110676554A (en) * 2019-08-02 2020-01-10 杭州法动科技有限公司 Low-profile ultra-wideband indoor communication plane structure antenna
CN110829013A (en) * 2019-11-19 2020-02-21 榆林学院 C-band planar MIMO antenna based on interdigital coupling structure
CN110829038A (en) * 2019-11-27 2020-02-21 南通大学 Broadband quasi-yagi antenna based on dielectric resonator
CN110828997A (en) * 2019-11-19 2020-02-21 榆林学院 Double-layer dielectric substrate multi-frequency high-gain microstrip slot antenna
CN111180879A (en) * 2020-02-10 2020-05-19 西安交通大学 Single-zero-point compensation dipole antenna
CN112582807A (en) * 2019-09-27 2021-03-30 华为技术有限公司 Directional antenna and communication equipment
CN113745837A (en) * 2021-09-13 2021-12-03 重庆大学 Omnidirectional, vertical polarization and electric small filtering antenna
CN113794045A (en) * 2021-09-16 2021-12-14 天津大学 Vivaldi antenna of loading director
CN113889754A (en) * 2021-09-29 2022-01-04 重庆大学 Compact single-layer differential feed filtering transparent antenna
CN116780175A (en) * 2023-07-18 2023-09-19 南通至晟微电子技术有限公司 Broadband millimeter wave end-fire antenna

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CN106785401A (en) * 2017-01-05 2017-05-31 华侨大学 A kind of miniaturization Quasi-Yagi antenna based on capacitive loading
CN106785401B (en) * 2017-01-05 2022-12-06 华侨大学 Miniaturized quasi-yagi antenna based on capacitive loading
CN106898869A (en) * 2017-03-22 2017-06-27 中国人民解放军国防科学技术大学 High-gain directed radiation medium resonator antenna
CN106898869B (en) * 2017-03-22 2022-10-04 中国人民解放军国防科学技术大学 High-gain directional radiation dielectric resonator antenna
CN110085989A (en) * 2019-05-05 2019-08-02 南京邮电大学 A kind of Yagi spark gap leaky-wave antenna based on artificial surface phasmon
CN110676554B (en) * 2019-08-02 2021-04-30 杭州法动科技有限公司 Low-profile ultra-wideband indoor communication plane structure antenna
CN110676554A (en) * 2019-08-02 2020-01-10 杭州法动科技有限公司 Low-profile ultra-wideband indoor communication plane structure antenna
CN112582807A (en) * 2019-09-27 2021-03-30 华为技术有限公司 Directional antenna and communication equipment
WO2021057627A1 (en) * 2019-09-27 2021-04-01 华为技术有限公司 Directional antenna and communication device
CN112582807B (en) * 2019-09-27 2021-12-28 华为技术有限公司 Directional antenna and communication equipment
CN110828997A (en) * 2019-11-19 2020-02-21 榆林学院 Double-layer dielectric substrate multi-frequency high-gain microstrip slot antenna
CN110829013A (en) * 2019-11-19 2020-02-21 榆林学院 C-band planar MIMO antenna based on interdigital coupling structure
CN110829038A (en) * 2019-11-27 2020-02-21 南通大学 Broadband quasi-yagi antenna based on dielectric resonator
CN111180879A (en) * 2020-02-10 2020-05-19 西安交通大学 Single-zero-point compensation dipole antenna
CN113745837B (en) * 2021-09-13 2024-04-19 重庆大学 Omnidirectional, vertical polarization and electric small filter antenna
CN113745837A (en) * 2021-09-13 2021-12-03 重庆大学 Omnidirectional, vertical polarization and electric small filtering antenna
CN113794045A (en) * 2021-09-16 2021-12-14 天津大学 Vivaldi antenna of loading director
CN113794045B (en) * 2021-09-16 2023-09-15 天津大学 Vivaldi antenna for loading director
CN113889754A (en) * 2021-09-29 2022-01-04 重庆大学 Compact single-layer differential feed filtering transparent antenna
CN113889754B (en) * 2021-09-29 2023-12-19 重庆大学 Compact single-layer differential feed filtering transparent antenna
CN116780175B (en) * 2023-07-18 2024-04-16 南通至晟微电子技术有限公司 Broadband millimeter wave end-fire antenna
CN116780175A (en) * 2023-07-18 2023-09-19 南通至晟微电子技术有限公司 Broadband millimeter wave end-fire antenna

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