CN209217204U - A kind of back chamber slot-coupled paster antenna - Google Patents
A kind of back chamber slot-coupled paster antenna Download PDFInfo
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- CN209217204U CN209217204U CN201920245637.5U CN201920245637U CN209217204U CN 209217204 U CN209217204 U CN 209217204U CN 201920245637 U CN201920245637 U CN 201920245637U CN 209217204 U CN209217204 U CN 209217204U
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Abstract
The utility model discloses a kind of back chamber slot-coupled paster antennas, are related to communication, observing and controlling and Radar Technology field.It includes radiating layer, transmission network network layers, back cavity layer and radio frequency connector；Quarter is applied in radiating layer upper surface, and there are two round coupled patch, there are rectangular aperture and two selenodont gaps on the metal copper-clad of transmission network network layers, the lower surface of microwave-medium plate is equipped with microstrip feed line, one end of microstrip feed line and the inner conductor of radio frequency connector connect, the other end passes through view field of the rectangular aperture on microwave-medium plate lower surface, constitutes the lossless open-circuit line of open-end；It is set in back cavity layer there are two elliptical table shape cavity, the upper bottom surface of elliptical table shape cavity is greater than bottom surface, and the groove for radiofrequency signal on shielded microstrip line feeder line is equipped between two elliptical table shape cavitys.The utility model has the characteristics that standing wave band is wide, axial ratio bandwidth is wide, can be used for communicating, in TT&C system aircraft carrier high-performance low profile circular polarized antenna.
Description
Technical field
The utility model relates to communicate, observing and controlling and Radar Technology field, particularly relate to a kind of back chamber slot-coupled patch day
Line.
Background technique
Currently, circular polarized antenna is widely applied in overocean communications, TT&C system, with anti-interference, inhibition electromagnetic wave
The characteristics of multipath effect.Circular polarized antenna is mainly the following structure type, though respectively there is feature in performance, there is certain
It is a little insufficient:
1, corner cut circular polarization microstrip antenna, the form antenna structure is simple, and profile is low, but antenna axial ratio, standing wave bandwidth are small
In 2%.
2, the circular polarization microstrip antenna form of external circular polarisation electric bridge, the microstrip antenna axis ratio of the form, standing wave bandwidth compared with
Wide usually it is less than 3dB axial ratio bandwidth greater than 15%, and the standing wave band less than 2 is wider than 20%, but external circular polarisation electric bridge occupies sky
Between it is larger, feeder line is tediously long, differential loss is larger, be unfavorable for antenna, network integration design.
3, waveguiding structure circular polarized antenna, the radiation efficiency of the form is high, axis than the band less than 3dB is wider than 20%, still
Feeding network occupied space is larger, structure bulky, is unfavorable for antenna low profile design.
Utility model content
The utility model aim is to avoid the shortcoming in above-mentioned background technique and provide a kind of back chamber slot-coupled
Paster antenna, the antenna are designed using network integration, have the characteristics that axial ratio bandwidth is wide, compact-sized, radiation efficiency is high.
To achieve the goals above, the technical solution adopted in the utility model is as follows:
A kind of back chamber slot-coupled paster antenna, including be arranged from top to bottom radiating layer 1, transmission network network layers 2, back cavity layer
3 and radio frequency connector 4；The radiating layer 1 is microwave printed board of the lower surface without copper-clad, the upper surface of the microwave printed board
Apply round coupled patch 5 there are two carving；The transmission network network layers 2 are including microwave-medium plate 6 and are set to table on microwave-medium plate
The metal copper-clad 7 in face, with rectangular aperture 8 and corresponding to two of two round coupled patch 5 on the metal copper-clad 7
Selenodont gap 9, two selenodont gaps 9 are centrosymmetric relative to the center of transmission network network layers 2, the selenodont gap 9
Profile constituted by being convex to two circular arcs of identical size, the center weight of the center of the rectangular aperture 8 and transmission network network layers 2
Close, one end of rectangular aperture 8 is connected to a tip in a selenodont gap just, the other end just with another selenodont
One tip in gap is connected to；The lower surface of the microwave-medium plate 6 is equipped with microstrip feed line 10, the extending direction of microstrip feed line 10
Orthogonal with the extending direction of rectangular aperture 8, one end of microstrip feed line 10 is connect with the inner conductor of radio frequency connector 4, and the other end is worn
View field of the rectangular aperture 8 on 6 lower surface of microwave-medium plate is crossed, the lossless open-circuit line of open-end is constituted；The back chamber
Two elliptical table shape cavitys 11 for corresponding to two round coupled patch 5 are equipped in layer 3, the upper bottom surface of elliptical table shape cavity 11 is big
The groove 12 for radiofrequency signal on shielded microstrip line feeder line 10 is equipped between bottom surface, two elliptical table shape cavitys.
Specifically, circular diameter where the orthodrome in the selenodont gap 9 is, circular diameter where small arc-shaped is, the line in two selenodont gaps, the 9 orthodrome center of circle is parallel with the extending direction of the rectangular aperture 8, transmission network network layers
It is acute angle, two 9 orthodrome of selenodont gap circles that center, the orthodrome center of circle and the small arc-shaped center of circle, which are sequentially connected with constituted angle,
The distance between heart is,For the corresponding wavelength of center of antenna frequency.
Specifically, the elliptical table shape cavity 11 is a height of, upper bottom surface long axis is, short axle is,
Bottom surface long axis is, short axle is, the bottom surface long axis of elliptical table shape cavity 11 and the extending direction of rectangular aperture 8 are flat
Row, the orthodrome center of circle and corresponding round coupled patch 5 of the central axes of elliptical table shape cavity 11 by corresponding selenodont gap 9
The center of circle, the groove depth of the groove 12 is less than or equal to 3mm and is greater than or equal to 2mm.
The utility model has the following advantages compared with the background art:
1, the utility model antenna includes radiating layer, transmission network network layers, carries on the back cavity layer and radio frequency connector, transmission network network layers
There is rectangular aperture and selenodont gap on metal copper-clad, be equipped with elliptical table shape cavity in back cavity layer.Antenna structure novelty,
Simply, compact, it can satisfy broadband circle polarized emission requirements.
2, the utility model antenna is designed using antenna and network integration, can be used as the subarray of array antenna, is applicable in
In the communication system for requiring circular polarized antenna.
3, the utility model antenna is circular polarized antenna form, and the circular polarisation guided wave of high quality can be generated in broadband
Beam.By the special setting to antenna structure parameter, this antenna can be made to be less than 3dB axial ratio bandwidth and be greater than 27.5%, less than 2dB's
Standing wave band is wider than 30%.
In short, this antenna realizes the technical problems such as high efficiency, broadening circular polarization radiation bandwidth, for a kind of new dwi hastasana
Formula is suitably applied the overocean communications for requiring circular polarization radiation antenna, in TT&C system.
Detailed description of the invention
Fig. 1 is the layered structure schematic diagram of antenna in the utility model embodiment；
Fig. 2 is the structural schematic diagram of transmission network network layers in Fig. 1；
Fig. 3 is the structural schematic diagram that cavity layer is carried on the back in Fig. 1；
Fig. 4 is the structural schematic diagram in " selenodont " gap in Fig. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of back chamber slot-coupled paster antenna, including radiating layer 1, the feed being arranged from top to bottom
Network layer 2, back cavity layer 3 and radio frequency connector 4；The radiating layer 1 is microwave printed board of the lower surface without copper-clad, the microwave
Quarter is applied in the upper surface of printed board, and there are two round coupled patch 5；The transmission network network layers 2 include microwave-medium plate 6 and are set to
The metal copper-clad 7 of microwave-medium plate upper surface has rectangular aperture 8 on the metal copper-clad 7 and corresponds to two circles
Two selenodont gaps 9 of coupled patch 5, two selenodont gaps 9 are centrosymmetric relative to the center of transmission network network layers 2,
The profile in the selenodont gap 9 constituted by being convex to two circular arcs of identical size (structure as shown in figure 4, orthodrome be great circle
13 a part, small arc-shaped are a part of roundlet 14), the center of the rectangular aperture 8 and the center weight of transmission network network layers 2
Close, one end of rectangular aperture 8 is connected to a tip in a selenodont gap just, the other end just with another selenodont
One tip in gap is connected to；The lower surface of the microwave-medium plate 6 is equipped with microstrip feed line 10, the extending direction of microstrip feed line 10
Orthogonal with the extending direction of rectangular aperture 8, one end of microstrip feed line 10 is connect with the inner conductor of radio frequency connector 4, and the other end is worn
View field of the rectangular aperture 8 on 6 lower surface of microwave-medium plate is crossed, the lossless open-circuit line of open-end is constituted；The back chamber
Two elliptical table shape cavitys 11 for corresponding to two round coupled patch 5 are equipped in layer 3, the upper bottom surface of elliptical table shape cavity 11 is big
The groove 12 for radiofrequency signal on shielded microstrip line feeder line 10 is equipped between bottom surface, two elliptical table shape cavitys.
Specifically, circular diameter where the orthodrome in the selenodont gap 9 is, circular diameter where small arc-shaped is, the line in two selenodont gaps, the 9 orthodrome center of circle is parallel with the extending direction of the rectangular aperture 8, transmission network network layers
It is acute angle theta (as shown in Figure 4), two selenodonts that center, the orthodrome center of circle and the small arc-shaped center of circle, which are sequentially connected with constituted angle,
The distance between 9 orthodrome center of circle of gap is,For the corresponding wavelength of center of antenna frequency.
Specifically, the elliptical table shape cavity 11 is a height of, upper bottom surface long axis is, short axle is,
Bottom surface long axis is, short axle is, the bottom surface long axis of elliptical table shape cavity 11 and the extending direction of rectangular aperture 8 are flat
Row, the orthodrome center of circle and corresponding round coupled patch 5 of the central axes of elliptical table shape cavity 11 by corresponding selenodont gap 9
The center of circle, the groove depth of the groove 12 is less than or equal to 3mm and is greater than or equal to 2mm, for example, the groove depth of groove 12 can be
2mm, 2.5mm or 3mm.
In above-described embodiment, radiating layer 1 is the hardened structure of single layer microwave-medium, and the hardened structure of single layer microwave-medium is by transmission network
Supporting Media column between network layers 2 and radiating layer 1 is supported that (support construction is the common knowledge of this field, is not shown in Fig. 1
Out), it is filled between radiating layer 1 and transmission network network layers 2 for air dielectric, round coupled patch 5 is through air dielectric coupling gap
Electromagnetic signal to broaden the impedance bandwidth of antenna, and is radiated free space by energy.The effect in " selenodont " gap 9 is
Circular polarisation electromagnetic wave is motivated in gap structure, centrosymmetric set-up mode can make the rotating field quadrature component in cavity
Phase difference tends to be constant in comparatively wide frequency band, to realize wider axial ratio bandwidth, it is special to reach preferable circular polarization radiation
Property.The lower surface of microwave-medium plate 6 is provided with microstrip feed line 10, characteristic impedance is 50 Ω, the extending direction of feeder line 10 with
The extending direction of rectangular aperture 8 is orthogonal, and the two is respectively placed in the upper and lower surfaces of microwave-medium plate 6, and effect is in rectangular aperture
Motivated electromagnetic signal on 8, and by two " selenodont " gaps 9 that are transported to of electromagnetic energy constant power, one end of feeder line with penetrate
The inner conductor of frequency connector realizes by welding manner and is in electrical contact that the other end extends past always rectangular aperture 8 in microwave-medium
The view field of 6 lower surface of plate, formed open-ended line, by optimize the adjustable electromagnetic signal of its electrical length frequency point it is humorous
Shake position, and antenna is made to reach optimal designing impedance matching.The lower section of transmission network network layers 2 is provided with back cavity layer 3, and back cavity layer can adopt
With aluminium rectangular parallelepiped structure, two elliptical table shape cavity body structures are provided with, are provided with groove between two elliptical table shape cavitys
12, groove 12 is located at the underface of microstrip feed line 10, plays electromagnetic shielding.The effect of back cavity layer 3 is that antenna is made to realize height
Performance directed radiation broadens the impedance bandwidth of antenna, inhibits the backward radiation of antenna, while ensure that the electromagnetic compatibility of antenna is special
Property, installation by adhering can be achieved on special carrier.Back cavity layer lower surface is fixed with radio frequency connector 4, inner conductor and feedback
Line 10 connects, and outer conductor and back cavity layer are altogether.
The working principle of the utility model is as follows:
When antenna emits signal, transmitter emits signal, input radio frequency connector 4, and signal exists via microstrip feed line 10
Electromagnetic signal has been motivated on rectangular aperture 8, and electromagnetic energy constant power is transported to two " selenodont " gaps 9, " crescent moon
Circular polarisation electromagnetic wave has been motivated in type " gap 9 in gap structure, which passes through Air Coupling to coupled patch 5, and by it
It is radiated free space.
When the antennas receive signals, circular polarisation electromagnetic wave generates resonance in coupled patch 5, and by Air Coupling to two
On " selenodont " gap 9, energy work rate synthesis is realized via rectangular aperture 8, last energy centralization is on microstrip feed line 10, by penetrating
Frequency connector 4 is conveyed to receiver.
In short, the utility model is circular polarized antenna structure, according to communication and measurement and control area to polarization purity and installation
The requirement in space is specifically designed, and has the spy that standing wave band is wide, axial ratio bandwidth is wide, profile is low, size is small, easily conformal
Point, can be used for communicating, in TT&C system aircraft carrier high-performance low profile circular polarized antenna.
Claims (3)
1. a kind of back chamber slot-coupled paster antenna, including radiating layer (1), transmission network network layers (2), the back chamber being arranged from top to bottom
Layer (3) and radio frequency connector (4)；It is characterized in that, the radiating layer (1) is microwave printed board of the lower surface without copper-clad, institute
Round coupled patch (5) there are two quarters is applied in the upper surface for stating microwave printed board；The transmission network network layers (2) include microwave-medium plate
(6) and the metal copper-clad (7) set on microwave-medium plate upper surface, there are rectangular aperture (8) on the metal copper-clad (7)
With two selenodont gaps (9) for corresponding to two round coupled patch (5), two selenodont gaps (9) are relative to transmission network
The center of network layers (2) is centrosymmetric, and the profile of the selenodont gap (9) is constituted by being convex to two circular arcs of identical size,
The center of the rectangular aperture (8) is overlapped with the center of transmission network network layers (2), one end of rectangular aperture (8) just with one month
One tip in tooth form gap is connected to, and the other end is connected to a tip in another selenodont gap just；The microwave is situated between
The lower surface of scutum (6) is equipped with microstrip feed line (10), the extending direction of microstrip feed line (10) and the extending direction of rectangular aperture (8)
Orthogonal, one end of microstrip feed line (10) is connect with the inner conductor of radio frequency connector (4), and the other end passes through rectangular aperture (8) micro-
View field on wave dielectric-slab (6) lower surface, constitutes the lossless open-circuit line of open-end；It is equipped in the back cavity layer (3) pair
It should be in two elliptical table shape cavitys (11) of two round coupled patch (5), under the upper bottom surface of elliptical table shape cavity (11) is greater than
Bottom surface is equipped with the groove (12) for radiofrequency signal on shielded microstrip line feeder line (10) between two elliptical table shape cavitys.
2. back chamber slot-coupled paster antenna according to claim 1, which is characterized in that the selenodont gap (9)
Circular diameter where orthodrome is, circular diameter where small arc-shaped is, two selenodont gap (9) orthodrome centers of circle
Line is parallel with the extending direction of the rectangular aperture (8), and transmission network network layers center, the orthodrome center of circle and the small arc-shaped center of circle are sequentially
Connecting constituted angle is acute angle, and the distance between two selenodont gap (9) orthodrome centers of circle are,For antenna
The corresponding wavelength of centre frequency.
3. back chamber slot-coupled paster antenna according to claim 2, which is characterized in that the elliptical table shape cavity
(11) a height of, upper bottom surface long axis is, short axle is, bottom surface long axis is, short axle is, ellipse
The bottom surface long axis of truncated cone-shaped cavity (11) is parallel with the extending direction of rectangular aperture (8), the central axes of elliptical table shape cavity (11)
By corresponding to the orthodrome center of circle of selenodont gap (9) and the center of circle of corresponding round coupled patch (5), the groove (12)
Groove depth is less than or equal to 3mm and is greater than or equal to 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920245637.5U CN209217204U (en) | 2019-02-27 | 2019-02-27 | A kind of back chamber slot-coupled paster antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920245637.5U CN209217204U (en) | 2019-02-27 | 2019-02-27 | A kind of back chamber slot-coupled paster antenna |
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| CN209217204U true CN209217204U (en) | 2019-08-06 |
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| CN201920245637.5U Active CN209217204U (en) | 2019-02-27 | 2019-02-27 | A kind of back chamber slot-coupled paster antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672021A (en) * | 2019-02-27 | 2019-04-23 | 中国电子科技集团公司第五十四研究所 | A kind of back chamber slot-coupled paster antenna |
| CN118174031A (en) * | 2024-05-15 | 2024-06-11 | 微网优联科技(成都)有限公司 | Ultralow-profile double-frequency omnidirectional WiFi antenna |
-
2019
- 2019-02-27 CN CN201920245637.5U patent/CN209217204U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672021A (en) * | 2019-02-27 | 2019-04-23 | 中国电子科技集团公司第五十四研究所 | A kind of back chamber slot-coupled paster antenna |
| CN109672021B (en) * | 2019-02-27 | 2024-04-09 | 中国电子科技集团公司第五十四研究所 | Back cavity gap coupling patch antenna |
| CN118174031A (en) * | 2024-05-15 | 2024-06-11 | 微网优联科技(成都)有限公司 | Ultralow-profile double-frequency omnidirectional WiFi antenna |
| CN118174031B (en) * | 2024-05-15 | 2024-07-23 | 微网优联科技(成都)有限公司 | Ultralow-profile double-frequency omnidirectional WiFi antenna |
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