CN215184551U - Reconfigurable reflection-type super-surface unit - Google Patents
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Abstract
The utility model discloses a reconfigurable reflection-type super-surface unit, which comprises a first medium substrate, a super-surface structure frequency selection unit printed on the front side of the first medium substrate, a metal floor printed on the back side of the first medium substrate, a second medium substrate and a direct current bias circuit; the super-surface structure unit is composed of a deformed H-shaped metal structure printed on the front surface of the first medium substrate, a grounding delay line and a PIN diode, and the PIN diode is connected between the deformed H-shaped metal structure and the grounding delay line; the direct current bias circuit is composed of a through hole penetrating through the first medium substrate, the metal floor and the second medium substrate, a microstrip line printed on the reverse side of the second medium substrate and a sector branch loaded on the microstrip line. The utility model discloses the super surface structure that adopts is the unit is selected about the polarization direction symmetry of incident wave frequently, can reduce cross polarization component effectively, and surpasses surface unit small, the section is low, has advantages such as the design is simple, with low costs, easily processing.
Description
Technical Field
The utility model belongs to the technical field of microwave millimeter wave antenna, concretely relates to super surface unit of restructural reflection-type.
Background
Due to the rapid development of radar, communication and other systems in recent decades, these fields have higher requirements on the self-adaptability and reconfigurable characteristics of the antenna. For the traditional parabolic antenna, the bulky reflecting surface of the traditional parabolic antenna causes the antenna to have large volume, the antenna cannot be randomly installed and tested in application, the beam scanning characteristic can be realized only by mechanical rotation, and the traditional parabolic antenna is bulky and inconvenient to use in practice. Compared with a parabolic antenna, the phased array antenna can achieve the purpose of beam scanning by adjusting the feed phase of each unit, and the operation mode is more flexible and convenient, but the complex feed circuit and control structure generated by the phased array antenna cause the defects of high manufacturing cost, large transmission loss, low efficiency and the like, and limit the application of the phased array antenna in various fields.
The reconfigurable reflection super-surface antenna can realize the adjustment of reflection phases by adjusting and controlling the reconfigurable reflection super-surface units forming the reflection super-surface, thereby realizing the characteristics of beam scanning, beam forming, multi-frequency work, multi-polarization work and the like. Compared with the traditional parabolic antenna and the phased array antenna, the reconfigurable reflection super-surface antenna does not need mechanical rotation and a complex feed circuit, and is simple in design, low in cost, easy to unfold and conformal. Therefore, the reconfigurable reflection super-surface antenna has wide application prospect in the future. The design of a reconfigurable reflection type super-surface unit to form the reconfigurable reflection super-surface antenna has great significance.
In order to Design a phase-reconfigurable reflection-type super-surface unit, Mathieu Riel et al disclose a slot-coupled reconfigurable reflection unit (m.riel and j. -j.laurin, "Design of an electronic beam scanning reflecting using-coupled elements," IEEE trans.antennas Propag, May 2007, vol.55, No.5, pp.1260-1266.), two varactors are loaded on the unit, the reflection phase of the unit can be adjusted by adjusting the bias voltage of the varactors, but the unit has a complex structure and too large reflection loss, and the relative bandwidth of normal operation is only 2.2%.
In order to further improve the working bandwidth of the reflection unit and reduce reflection loss, fang-Yi and the like disclose a 1-bit reconfigurable broadband multi-polarization reflection array unit (inventor: fang-Yi, Sunpong, Cao Jun and Populus tremula, the invention and creation name of the inventor is that the 1-bit reconfigurable broadband multi-polarization reflection array unit is a Chinese patent application No. 201811617374.2, and 12 and 28 of 2018), the polarization rotation and reflection phase adjustment performance is realized through four loaded switching diodes, but the structure of the unit is too complex, and the complex bias circuit design of the four switching diodes is not considered. Korean family et al discloses a 1-bit Reconfigurable reflecting unit (J.Han, L.Li, G.Y.Liu, et al. A Wideband 1bit 12 × 12Reconfigurable Beam-Scanning reflecting: Design, noise, and Measurement [ J ]. IEEE Antennas and Wireless presentation Letters, JUNE2019, vol.18: 1268-.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of above-mentioned prior art existence, provide a super surface unit of restructural reflection-type, when improving super surface unit work bandwidth, solve the problem that the unit structure is complicated and the size is big.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a reconfigurable reflection type super-surface unit comprises a first dielectric substrate (1), a frequency selection unit (2) printed on the front surface of the first dielectric substrate (1), a floor (3) printed on the back surface of the first dielectric substrate (1), a second dielectric substrate (4) and a circuit (5); the frequency selection unit (2) is composed of a structure (20) printed on the front surface of the first dielectric substrate (1), a grounding delay line (21) and a diode (22); the diode (22) is connected between the structure (20) and the grounded delay line (21); the structure (20) is a deformed H-shaped metal structure (20), two second gaps with the same size are etched in a cross arm of the deformed H-shaped metal structure (20), and the second gaps are rectangular gaps; the circuit (5) is composed of a through hole (50) penetrating through the first dielectric substrate (1), the floor (3) and the second dielectric substrate (4), a microstrip line (51) printed on the reverse side of the second dielectric substrate (4) and a branch (52) loaded on the microstrip line (51); a first gap (30) for penetrating through the through hole (50) is etched on the floor (3); the circuit (5) is a direct current bias circuit (5), the through hole (50) is a metal through hole (50), and the branch (52) is a fan-shaped branch (52); the diode (22) is a PIN diode (22), and the reconfigurable reflection type super surface unit adjusts the on-off of the PIN diode (22) through a direct current bias circuit (5).
Further, the length of the rectangular gap is 10mm, the width of the rectangular gap is 6.1mm, and the center distance of the rectangular gap is 8.6 mm.
Furthermore, the length of the longitudinal arm of the deformed H-shaped metal structure (20) is 22.4mm, the width of the longitudinal arm is 4.8mm, and the length of the transverse arm of the deformed H-shaped metal structure is 14mm, and the width of the transverse arm of the deformed H-shaped metal structure is 12 mm.
Furthermore, the floor (3) is a metal floor (3), and the first dielectric substrate (1), the metal floor (3) and the second dielectric substrate (4) in the reconfigurable reflection type super-surface unit all have square unit boundaries and have the same side length; the side length is 26mm, the thickness of the first dielectric substrate (1) is 2.032mm, and the thickness of the second dielectric substrate (4) is 0.4 mm.
Further, the ground delay line (21) is connected to the metal ground (3) by a metal via having a diameter of 0.8 mm.
Further, the length of a microstrip line (51) between the metal through hole (50) and the fan-shaped branch (52) in the direct current bias circuit (5) is 11 mm; the radius of the fan-shaped branch knot (52) is 8.05mm, and the opening angle is 85 degrees.
Further, the first gap (30) is a circular gap (30), and the diameter of the first gap (30) is larger than that of the metal through hole (50).
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model discloses a super surface unit has realized the controllable regulation of unit reflection phase place 1bit through the break-make of regulation and control PIN pipe, and phase adjustment mode and bias circuit design are simple, have fine application prospect in fields such as satellite communication, deep space exploration.
(2) The utility model discloses the super surface structure that adopts is the unit is selected about the polarization direction symmetry of incident wave frequently, can reduce cross polarization component effectively, and surpasses surface unit small, the section is low, has advantages such as miniaturization, design are simple, with low costs, easily manufacturing and processing.
The objects, features and advantages of the present invention will be described in more detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the general structure of a super-surface unit of the present invention;
FIG. 2 is a top view of the super-surface unit structure of the present invention;
FIG. 3 is a back cross-sectional view of a super-surface unit structure of the present invention;
FIG. 4 is a side view of the super-surface unit structure of the present invention;
FIG. 5 is a diagram showing the relationship between the reflection amplitude of the incident electromagnetic wave and the operating state of the PIN diode;
fig. 6 is a diagram showing the relationship between the reflection phase and the operating state of the PIN diode when the electromagnetic wave is incident.
Detailed Description
As shown in the general structural diagram of the super-surface unit in fig. 1, a reconfigurable reflection-type super-surface unit includes a first dielectric substrate 1 of Rogers RO4350B with a thickness of 2.032mm, a super-surface structure frequency selection unit 2 printed on the front surface of the first dielectric substrate 1, a metal floor 3 printed on the back surface of the first dielectric substrate 1, an FR4 second dielectric substrate 4 with a thickness of 0.4mm, and a dc bias circuit 5, wherein the first dielectric substrate 1, the metal floor 3, and the second dielectric substrate 4 of the reconfigurable reflection-type super-surface unit all have square unit boundaries with side lengths of 26mm, and the formed super-surface unit has the advantages of simple structure, small size, miniaturization, simple design, low cost, easy manufacturing and processing, and the like. As shown in the top view of the super-surface unit structure of fig. 2, the super-surface unit 2 is composed of a deformed H-shaped metal structure 20 printed on the front surface of the first dielectric substrate 1, a ground delay line 21 and a PIN diode 22; the PIN diode 22 is connected between the deformed H-shaped structure 20 and the grounding delay line 21; the cross arm of the deformed H-shaped metal structure 20 is etched with two second gaps with the same size, the second gaps are rectangular gaps, the length of each rectangular gap is 10mm, the width of each rectangular gap is 6.1mm, and the center distance of each rectangular gap is 8.6 mm. The length of the longitudinal arm of the deformed H-shaped metal structure 20 is 22.4mm, the width of the longitudinal arm is 4.8mm, and the length of the transverse arm of the deformed H-shaped metal structure is 14mm, and the width of the transverse arm of the deformed H-shaped metal structure is 12 mm.
Further, as shown in a back cross-sectional view of the super-surface unit structure in fig. 3, and as shown in a side view of the super-surface unit structure in fig. 4, the dc bias circuit 5 is composed of a metal through hole 50 with a diameter of 0.8mm penetrating through the first dielectric substrate 1, the metal floor 3 and the second dielectric substrate 4, a microstrip line 51 printed on the reverse side of the second dielectric substrate 4, and a segment 52 loaded on the microstrip line 51 and having a radius of 8.05mm and an opening angle of 85 °; the length of the microstrip line 51 between the metal through hole 50 and the sector branch 52 in the direct current bias circuit 5 is 11 mm; a first gap 30 with the diameter of 1.4mm and used for penetrating through the metal through hole 50 is etched on the metal floor 3, the first gap 30 is a circular gap 30, the diameter of the gap is larger than the diameter 50 of the metal through hole, and the metal floor 3 and the direct current bias circuit 5 can be isolated from each other; the ground delay line 21 is connected to the metal floor 3 by a metal via having a diameter of 0.8 mm.
Furthermore, the reconfigurable reflection type super-surface unit can realize 180-degree change of the reflection phase of the unit by adjusting the on-off state of the PIN diode 22 through the direct current bias circuit 5. As figure 5 the utility model discloses reflection phase place and PIN diode's operating condition relation graph in the incident electromagnetic wave is shown, is in when switching on and breaking off two kinds of states when PIN diode 22, and all within-1.8 dB to the reflection amplitude of incident electromagnetic wave, as figure 6 the utility model discloses reflection phase place and PIN diode's operating condition relation graph in the incident electromagnetic wave is shown, is in when switching on and breaking off two kinds of states when PIN diode 22, and the phase shift scope of 180 +/-30 can be realized in the frequency band of reflection phase place 3.39-3.64GHz, through the break-make of regulation PIN pipe, has realized the controllable regulation of unit reflection phase place 1bit, and phase adjustment mode and bias circuit design are simple.
The utility model discloses a super surface unit structure loss little, the work bandwidth of super surface unit has obtained further promotion.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations without departing from the invention in light of the teachings herein, and such variations and combinations are within the scope of the invention.
Claims (7)
1. A reconfigurable reflective super-surface unit, comprising: the floor board comprises a first dielectric substrate (1), a frequency selection unit (2) printed on the front surface of the first dielectric substrate (1), a floor board (3) printed on the back surface of the first dielectric substrate (1), a second dielectric substrate (4) and a circuit (5); the frequency selection unit (2) is composed of a structure (20) printed on the front surface of the first dielectric substrate (1), a grounding delay line (21) and a diode (22); the diode (22) is connected between the structure (20) and the grounded delay line (21); the structure (20) is a deformed H-shaped metal structure (20), two second gaps with the same size are etched in a cross arm of the deformed H-shaped metal structure (20), and the second gaps are rectangular gaps; the circuit (5) is composed of a through hole (50) penetrating through the first dielectric substrate (1), the floor (3) and the second dielectric substrate (4), a microstrip line (51) printed on the reverse side of the second dielectric substrate (4) and a branch (52) loaded on the microstrip line (51); a first gap (30) for penetrating through the through hole (50) is etched on the floor (3); the circuit (5) is a direct current bias circuit (5), the through hole (50) is a metal through hole (50), and the branch (52) is a fan-shaped branch (52); the diode (22) is a PIN diode (22), and the reconfigurable reflection type super surface unit adjusts the on-off of the PIN diode (22) through a direct current bias circuit (5).
2. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the rectangular gap is 10mm long, 6.1mm wide and 8.6mm center to center spacing.
3. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the length of the longitudinal arm of the deformed H-shaped metal structure (20) is 22.4mm, the width of the longitudinal arm is 4.8mm, and the length of the transverse arm of the deformed H-shaped metal structure is 14mm, and the width of the transverse arm of the deformed H-shaped metal structure is 12 mm.
4. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the floor (3) is a metal floor (3), and the first dielectric substrate (1), the metal floor (3) and the second dielectric substrate (4) in the reconfigurable reflection type super-surface unit all have square unit boundaries and have the same side length; the side length is 26mm, the thickness of the first dielectric substrate (1) is 2.032mm, and the thickness of the second dielectric substrate (4) is 0.4 mm.
5. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the ground delay line (21) is connected to the metal floor (3) by a metal via having a diameter of 0.8 mm.
6. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the length of a microstrip line (51) between a metal through hole (50) and a fan-shaped branch (52) in the direct current bias circuit (5) is 11 mm; the radius of the fan-shaped branch knot (52) is 8.05mm, and the opening angle is 85 degrees.
7. The super surface unit of a reconfigurable reflective type of claim 1, wherein: the first gap (30) is a circular gap (30), and the diameter of the first gap (30) is larger than that of the metal through hole (50).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121551772.6U CN215184551U (en) | 2021-07-08 | 2021-07-08 | Reconfigurable reflection-type super-surface unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121551772.6U CN215184551U (en) | 2021-07-08 | 2021-07-08 | Reconfigurable reflection-type super-surface unit |
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| CN215184551U true CN215184551U (en) | 2021-12-14 |
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Address after: 313000 room 601-1, 6 / F, building B1, Chengye intelligent center, 819 Xisaishan Road, Huzhou City, Zhejiang Province Patentee after: Jixin Micro Technology (Zhejiang) Co.,Ltd. Country or region after: China Patentee after: Nanjing Ruanhe Electronic Technology Co.,Ltd. Address before: 313000 room 601-1, 6 / F, building B1, Chengye intelligent center, 819 Xisaishan Road, Huzhou City, Zhejiang Province Patentee before: Jixin Micro Technology (Zhejiang) Co.,Ltd. Country or region before: China Patentee before: NANJING RUANHE BOYU ELECTRONIC TECHNOLOGY CO.,LTD. |
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