CN110649381B - Trapezoidal multi-slot fractal split growth type array antenna - Google Patents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
Abstract
The invention relates to a trapezoidal multi-slot fractal split growth type array antenna which comprises a substrate, an antenna ground plate attached to the back of the substrate and a trapezoidal multi-slot fractal split growth type array radiation patch attached to the front of the substrate, wherein the trapezoidal multi-slot fractal split growth type array radiation patch is an antenna array formed by arranging 144 trapezoidal multi-slot fractal antennas according to a split growth type array structure. The invention can completely cover second-generation to fifth-generation mobile communication frequency bands, radio frequency identification frequency bands, ultra-wideband communication frequency bands and mobile digital television frequency bands, meets the requirements of small size and high radiation intensity, and has stable radiation characteristic and larger performance redundancy.
Description
Technical Field
The invention relates to the field of communication system antenna design, in particular to a trapezoidal multi-slot fractal split growth type array antenna.
Background
A plurality of wireless communication application systems working in different frequency bands are integrated together, wireless communication frequency band multiplexing and multi-band compatibility are achieved, a multi-network-in-one system with ultra-strong compatibility is formed, and the system is the most important trend of wireless communication development in the twenty-first century. The mobile communication system, the radio frequency identification system, the ultra-wideband communication system and the mobile digital television system are all wireless communication application systems working in a microwave frequency band, and if the mobile communication system, the radio frequency identification system, the ultra-wideband communication system and the mobile digital television system can be integrated together, the multi-network-in-one and multi-band compatibility of the microwave frequency band can be realized.
The second generation mobile communication frequency bands currently used in China are GSM standard frequency bands of 0.905-0.915 GHz, 0.950-0.960 GHz, 1.710-1.785 GHz and 1.805-1.880 GHz; the third generation mobile communication frequency band is a TD-SCDMA frequency band with 1.880-1.920 GHz, 2.010-2.025 GHz, 2.300-2.400 GHz and a WCDMA frequency band with 1.920-1.980 GHz and 2.110-2.170 GHz; the fourth generation mobile communication frequency band is a TD-LTE standard 2.570-2.620 GHz frequency band. The fifth generation mobile communication to be put into use has three candidate frequency bands, which are respectively: 3.300 to 3.400 GHz, 4.400 to 4.500 GHz and 4.800 to 4.990 GHz. The rfid system has three main operating frequency bands: 0.902 to 0.928 GHz, 2.400 to 2.4835 GHz and 5.725 to 5.875 GHz. The working frequency band of the ultra-wideband system is 3.100-10.600 GHz. The working frequency band of the mobile digital television system is 11.700-12.200 GHz. The multi-network-in-one and multi-band compatible system of the microwave frequency band needs to use a single ultra-wide working frequency band, completely covers all the working frequency bands, meets the requirements of small size and high radiation intensity, and has stable radiation characteristic and larger performance redundancy. There is then no antenna in the prior art that is capable of fulfilling the above requirements.
Disclosure of Invention
In view of the above, the present invention provides a trapezoidal multi-slot fractal splitting growth type array antenna, which can completely cover the second to fifth generation mobile communication frequency bands, the radio frequency identification frequency band, the ultra-wideband communication frequency band and the mobile digital television frequency band, meet the requirements of small size and high radiation intensity, and has stable radiation characteristics and greater performance redundancy.
The invention is realized by adopting the following scheme: a trapezoid multi-slot fractal split growth type array antenna comprises a substrate, an antenna ground plate attached to the back of the substrate and a trapezoid multi-slot fractal split growth type array radiation patch attached to the front of the substrate, wherein the trapezoid multi-slot fractal split growth type array radiation patch is an antenna array formed by 144 trapezoid multi-slot fractal antennas arranged according to a split growth type array structure.
Further, the antenna ground plate is a fully conductive ground structure.
Furthermore, each trapezoidal multi-slot fractal antenna is obtained by performing trapezoidal multi-slot fractal iteration in a rectangular area with the size of 2.0 mm +/-0.1 mm multiplied by 2.0 mm +/-0.1 mm.
Further, each trapezoidal multi-slot fractal antenna uses a trapezoidal multi-slot fractal structure of at least 2 steps.
Furthermore, an antenna feed point is arranged at the center of the bottom edge of each trapezoidal multi-slot fractal antenna.
Furthermore, the trapezoidal multi-slot fractal split growth type array radiation patch uses a split growth type array structure as a basic array arrangement structure, and a trapezoidal multi-slot fractal antenna is arranged at the center of each array element antenna area with the size of 2.4 mm +/-0.1 mm multiplied by 2.4 mm +/-0.1 mm of the split growth type array structure.
Furthermore, the split-growth array structure is a 2-stage split-growth array structure, and is a rectangular region composed of 400 square regions including 20 rows and 20 columns, wherein the rectangular region includes 10 th, 11 th, 9 th, 10 th, 11 th, 12 th, 7 th, 8 th, 9 th, 12 th, 13 th, 14 th rows of the 1 st row, 7 th, 8 th, 9 th, 12 th, 13 th, 14 th, 9 th, 12 th, 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 6 th, 10 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 16 th, 17 th, 8 th, 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 16 th, 17 th, 8 th, 4 th, 7 th, 8 th, 7 th, 9 th, 10 th, 11 th, 10 th, 11, 12 th column, 13 th column, 14 th column, 16 th column, 17 th column, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 16 th column, 17 th column, 18 th column of 9 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column of 10 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column of 11 th row, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 16 th column, 17 th column, 9 th column, 4 th column, 10 th column, 9 th column, 10 th column, 13 th column, 10 th column, 9 th column, 10 th column, The 12 th column, the 13 th column, the 14 th column, the 16 th column and the 17 th column of the 14 th row, the 4 th column, the 5 th column, the 7 th column, the 8 th column, the 9 th column, the 10 th column, the 11 th column, the 12 th column, the 13 th column, the 14 th column, the 16 th column and the 17 th column of the 14 th row, the 9 th column, the 10 th column, the 11 th column and the 12 th column of the 15 th row, the 7 th column, the 8 th column, the 9 th column, the 12 th column, the 13 th column and the 14 th column of the 16 th row, the 7 th column, the 8 th column, the 9 th column, the 12 th column, the 13 th column and the 14 th column of the 18 th row, the 9 th column, the 10 th column, the 11 th column, the 12 th column, the 10 th column, the 11 th column of the 19 th row, the 10 th column and the 11 th column of the 20 th row, and 144 square areas are placed.
Further, the substrate is a low-loss epoxy resin glass cloth substrate, and the relative dielectric constant of the substrate is 5.5-6.5.
Further, the substrate is rectangular, the size is 48 mm +/-0.1 mm multiplied by 48 mm +/-0.1 mm, and the thickness is 1 mm +/-0.1 mm.
Furthermore, the radiation patch and the antenna ground plate are made of copper, silver, gold or aluminum.
Compared with the prior art, the invention has the following beneficial effects: the antenna carries out 'embedded' slot fractal iteration based on the trapezoidal multi-slot structure to obtain the trapezoidal multi-slot fractal structure, and the trapezoidal multi-slot fractal structure is used as an array element antenna to realize single-frequency-band ultra-wideband work of the array element antenna; the array element antennas are arranged according to the split growth type array structure to form the antenna array, so that the antenna array has self-similarity similar to a fractal structure, the radiation intensity of the antenna is enhanced, and the antenna array can keep excellent broadband working capacity. Compared with the conventional antenna used for a mobile communication system, a radio frequency identification system, an ultra-wideband communication system and a mobile digital television system, the antenna has the size of 48 mm multiplied by 1 mm under the condition of 144 array element antennas, is better in the aspect of miniaturization design of the antenna, and can be put into various mobile terminal devices; the antenna uses a single ultra-wide working band with the bandwidth exceeding 17 GHz, realizes the simultaneous coverage of all working frequency bands, radio frequency identification frequency bands, ultra-wide band communication frequency bands and mobile digital television frequency bands of all systems of mobile communication from the second generation to the fifth generation, and has unique advantages in the aspect of stable working of the ultra-wide band; the return loss value of the antenna is low, the return loss values of most of areas in a working frequency band are lower than-40 dB, the antenna has high performance redundancy, and the transmission quality of a multi-network-in-one wireless communication signal can be guaranteed in a complex electromagnetic environment.
Drawings
Fig. 1 is a schematic view of an iteration rule of a trapezoidal multi-slot fractal structure according to an embodiment of the present invention. Wherein (a) is 0 stage, (b) is 1 stage, and (c) is 2 stage.
Fig. 2 is a schematic view of an iteration rule of a split-growth array structure according to an embodiment of the present invention. Wherein (a) is 0 stage, (b) is 1 stage, and (c) is 2 stage.
Fig. 3 is a schematic diagram of an antenna structure according to an embodiment of the present invention.
FIG. 4 shows the return loss (S) of the antenna according to the embodiment of the present invention11) And (6) performance graphs.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 3, this embodiment provides a trapezoidal multi-slot fractal split-growth type array antenna, which includes a substrate, an antenna ground plate attached to the back of the substrate, and a trapezoidal multi-slot fractal split-growth type array radiation patch attached to the front of the substrate, where the trapezoidal multi-slot fractal split-growth type array radiation patch is an antenna array formed by 144 trapezoidal multi-slot fractal antennas arranged according to a split-growth type array structure.
In this embodiment, the antenna ground plate is a fully conductive ground structure.
In this embodiment, each trapezoidal multi-slot fractal antenna is obtained by performing trapezoidal multi-slot fractal iteration on a rectangular area with the size of 2.0 mm ± 0.1 mm × 2.0 mm ± 0.1 mm.
In the present embodiment, each trapezoidal multi-slot fractal antenna uses a trapezoidal multi-slot fractal structure of at least 2 steps.
The iteration rule of the trapezoidal multi-slot fractal structure is shown in fig. 1. The initial structure of the trapezoidal multi-slit fractal structure is a square, the initial structure is divided into 10 rows, 10 columns and 100 small squares equally, 20 small squares in total are dug out of the 5 th column, the 6 th column, the 4 th row, the 4 th column, the 5 th column, the 6 th column and the 7 th column of the 2 nd row, the 3 rd column, the 5 th column, the 6 th column, the 7 th column and the 8 th column of the 6 th row, the 2 nd column, the 3 rd column, the 4 th column, the 5 th column, the 6 th column, the 7 th column, the 8 th column and the 9 th column of the 8 th row to form a trapezoidal multi-slit, and 80 equally divided square areas are remained to obtain the 1-step multi-slit fractal structure. And respectively carrying out trapezoidal multi-slot fractal iteration on 80 square areas of the 1-step multi-slot fractal structure to obtain the 2-step multi-slot fractal structure. And continuing iteration according to the method, obtaining the high-order trapezoidal multi-slot fractal structure.
The trapezoid multi-slit structure is provided with a plurality of linear slits with different lengths, the working frequencies of the linear slits are different, and a working frequency band with larger bandwidth can be obtained by radiation superposition of the plurality of slits. The trapezoid multi-gap fractal structure generated according to the 'embedded' gap fractal iteration mode has the broadband working capacity of the trapezoid multi-gap structure and the high self-similarity of the 'embedded' gap fractal structure, and can realize the ultra-wideband working of a single frequency band.
In this embodiment, an antenna feeding point is provided at the center of the bottom edge of each trapezoidal multi-slot fractal antenna.
In this embodiment, the trapezoidal multi-slot fractal split growth type array radiation patch uses a split growth type array structure as a basic array arrangement structure, and a trapezoidal multi-slot fractal antenna is placed at the center of each array element antenna area with the size of 2.4 mm ± 0.1 mm × 2.4 mm ± 0.1 mm in the split growth type array structure.
In this embodiment, the split-growth array structure is a 2-stage split-growth array structure, and is a rectangular region composed of 400 square regions including 20 rows and 20 columns, in which the 10 th column and the 11 th column of the 1 st row, the 10 th column and the 11 th column of the 2 nd row, the 9 th column, the 10 th column, the 11 th column and the 12 th column of the 3 rd row, the 7 th column, the 8 th column, the 9 th column, the 12 th column, the 13 th column and the 14 th column of the 4 th row, the 7 th column, the 8 th column, the 9 th column, the 12 th column, the 13 th column and the 14 th column of the 5 th row, the 9 th column, the 12 th column, the 13 th column and the 12 th column of the 6 th row, the 4 th column, the 5 th column, the 7 th column, the 8 th column, the 9 th column, the 10 th column, the 11 th column, the 12 th column, the 13 th column, the 14 th column, the 16 th column and the 17 th column of the 8 th row, the 4 th column, the 5 th column, the 7 th column, the 9 th column, the 10 th column, 11 th column, 12 th column, 13 th column, 14 th column, 16 th column, 17 th column, 9 th row, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 16 th column, 17 th column, 18 th column, 10 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column, 11 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column, 12 th row, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 9 th column, 17 th column, 9 th column, 10 th column, 9 th column, The array element antenna is placed in 144 th, fourth, fifth, sixth, seventh, ninth and tenth rows, including 11 th, 12 th, 13 th, 14 th, 16 th and 17 th columns, the 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 16 th and 17 th columns of the 14 th row, the 9 th, 10 th, 11 th and 12 th columns of the 15 th row, the 7 th, 8 th, 9 th, 12 th, 13 th and 14 th columns of the 16 th row, the 7 th, 8 th, 9 th, 12 th, 13 th and 14 th columns of the 17 th row, the 9 th, 10 th, 11 th and 12 th columns of the 18 th row, the 10 th, 11 th, 10 th and 11 th columns of the 20 th row, and the 11 th columns of the 19 th row.
Although the working bandwidth of a single trapezoid multi-slot fractal antenna is large, radiation is dispersed on a wide working frequency band, the radiation intensity is weak, and the radiation intensity of the antenna can be enhanced by arranging a plurality of trapezoid multi-slot fractal antennas to form an antenna array through a radiation superposition principle.
In this implementation, as shown in fig. 2, fig. 2 shows an iteration rule of the split-growth array structure. The initial structure of the split growth type array structure is a rectangular array consisting of 8 rows and 8 columns of 64 array element antennas, 4 rows and 4 columns of 16 array element antennas at the center of the rectangular array are dug, and a small rectangular array consisting of 4 rows and 4 columns of 16 array element antennas is respectively grown at the centers of four sides of the rectangular array, so that a 1-order split growth type array structure can be obtained. Four small rectangular arrays of the 1-order split growth type array structure are dug to remove 4 array element antennas in 2 rows and 2 columns in the center, and a micro rectangular array of 4 array element antennas in 2 rows and 2 columns is respectively grown in the centers of three sides outside the small rectangular arrays, so that the 2-order split growth type array structure can be obtained. The split growth type array structure adopted by the invention has self-similarity similar to a fractal structure, and can ensure that the array antenna has the same ultra-wideband working characteristics as an array element antenna while enhancing the radiation intensity of the antenna through array combination.
In this embodiment, the substrate is a low-loss epoxy resin glass cloth substrate, and the relative dielectric constant of the substrate is 5.5-6.5.
In the present embodiment, the substrate has a rectangular shape, a size of 48 mm ± 0.1 mm × 48 mm ± 0.1 mm, and a thickness of 1 mm ± 0.1 mm.
In this embodiment, the radiation patch and the antenna ground plate are made of copper, silver, gold, or aluminum.
FIG. 4 shows the return loss (S) of the antenna of this embodiment11) And (6) performance graphs. As can be seen from FIG. 4, the actual measurement result shows that the working frequency band range of the antenna is 0.386-17.442 GHz, the working bandwidth is 17.056 GHz, the bandwidth octave is 45.19, the return loss of the antenna in the whole working frequency band is lower than-10 dB, and the minimum value of the return loss is-43.22 dB. The antenna completely covers all working frequency bands, radio frequency identification frequency bands, ultra-wideband communication frequency bands and all mobile digital television frequency bands of all systems from second generation to fifth generation mobile communication, such as 0.902-0.928 GHz, 0.905-0.915 GHz, 0.950-0.960 GHz, 1.710-1.785 GHz, 1.805-1.880 GHz, 1.880-1.920 GHz, 1.920-1.980 GHz, 2.010-2.025 GHz, 2.110-2.170 GHz, 2.300-2.400 GHz, 2.400-2.4835 GHz, 2.570-2.620 GHz, 3.300-3.400 GHz, 4.400-4.500 GHz, 4.800-4.990, 5.725-5.875 GHz, 3.100-10.600 GHz, 11.700-12.200 GHz and the like. The antenna of the embodiment has a single ultra-wide working band, can completely cover second-generation to fifth-generation mobile communication frequency bands, radio frequency identification frequency bands, ultra-wideband communication frequency bands and mobile digital television frequency bands, meets the requirements of small size and high radiation intensity, has stable radiation characteristics and large performance redundancy, and can be applied in a microwave frequency band multi-network-in-one system on a large scale.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (7)
1. A trapezoid multi-slot fractal split growth type array antenna is characterized by comprising a substrate, an antenna ground plate attached to the back of the substrate and a trapezoid multi-slot fractal split growth type array radiation patch attached to the front of the substrate, wherein the trapezoid multi-slot fractal split growth type array radiation patch is an antenna array formed by arranging 144 trapezoid multi-slot fractal antennas according to a split growth type array structure;
each trapezoidal multi-slot fractal antenna is obtained by performing trapezoidal multi-slot fractal iteration in a rectangular area with the size of 2.0 mm +/-0.1 mm multiplied by 2.0 mm +/-0.1 mm;
wherein the split-growth array structure is a 2-stage split-growth array structure, and is formed by arranging 400 square regions in 20 rows and 20 columns in a rectangular region, wherein the rectangular region comprises 10 th and 11 th columns in a 1 row, 10 th and 11 th columns in a 2 nd row, 9 th, 10 th, 11 th and 12 th columns in a 3 rd row, 7 th, 8 th, 9 th, 12 th, 13 th and 14 th columns in a 4 th row, 7 th, 8 th, 9 th, 12 th, 13 th and 14 th columns in a 5 th row, 9 th, 10 th, 11 th and 12 th columns in a 6 th row, 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 16 th and 17 th columns in a 6 th row, 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 11 th, 12 th, 13 th, 14 th, 16 th and 17 th rows, 4 th, 5 th, 7 th, 8 th, 9 th, 10 th, 9 th, 10 th and 14 th columns in a 6 th, 12 th column, 13 th column, 14 th column, 16 th column, 17 th column, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 16 th column, 17 th column, 18 th column of 9 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column of 10 th row, 1 st column, 2 nd column, 3 rd column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 18 th column, 19 th column, 20 th column of 11 th row, 3 rd column, 4 th column, 5 th column, 6 th column, 7 th column, 8 th column, 13 th column, 14 th column, 15 th column, 16 th column, 17 th column, 9 th column, 4 th column, 10 th column, 9 th column, 10 th column, 13 th column, 10 th column, 9 th column, 10 th column, 144 square areas of 12 th column, 13 th column, 14 th column, 16 th column and 17 th column, 4 th column, 5 th column, 7 th column, 8 th column, 9 th column, 10 th column, 11 th column, 12 th column, 13 th column, 14 th column, 16 th column and 17 th column of 14 th row, 9 th column, 10 th column, 11 th column and 12 th column of 15 th row, 7 th column, 8 th column, 9 th column, 12 th column, 13 th column and 14 th column of 16 th row, 7 th column, 8 th column, 9 th column, 12 th column, 13 th column and 14 th column of 17 th row, 9 th column, 10 th column, 11 th column and 12 th column of 18 th row, 10 th column, 11 th column, 10 th column and 11 th column of 20 th row, and 144 square areas are placed with array element antenna;
wherein each trapezoidal multi-slot fractal antenna uses a trapezoidal multi-slot fractal structure of at least 2 steps.
2. The antenna of claim 1, wherein the antenna ground plane is a fully conductive ground structure.
3. The antenna of claim 1, wherein an antenna feed point is disposed at a center of a bottom edge of each trapezoidal multi-slot fractal antenna.
4. The antenna of claim 1, wherein the radiation patch uses a fractal growth array structure as a basic array layout structure, and one trapezoidal multi-slot fractal antenna is placed at the center of each array element antenna area with a size of 2.4 mm ± 0.1 mm × 2.4 mm ± 0.1 mm in the fractal growth array structure.
5. The antenna as claimed in any one of claims 1 to 4, wherein the substrate is a low-loss epoxy glass cloth substrate having a relative dielectric constant of 5.5-6.5.
6. The antenna as claimed in any one of claims 1 to 4, wherein the substrate is rectangular, with dimensions of 48 mm ± 0.1 mm x 48 mm ± 0.1 mm and a thickness of 1 mm ± 0.1 mm.
7. The antenna as claimed in any one of claims 1 to 4, wherein the radiating patch and the antenna ground plate are made of copper, silver, gold or aluminum.
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| CN204289698U (en) * | 2015-01-16 | 2015-04-22 | 厦门大学嘉庚学院 | Three frequency range merisis formula microstrip fractal patch antennas |
| CN207818887U (en) * | 2018-01-30 | 2018-09-04 | 厦门大学嘉庚学院 | Trapezoidal more compound ultra-wide band antennas of seam-hexagonal array |
| CN109728434A (en) * | 2019-01-24 | 2019-05-07 | 厦门大学嘉庚学院 | The more gap Fractal array ultra-wide band antennas of diamond shape |
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