CN117855843A - Ultra-wideband large-phase-shift-range transmission array unit - Google Patents
Ultra-wideband large-phase-shift-range transmission array unit Download PDFInfo
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- CN117855843A CN117855843A CN202410261533.9A CN202410261533A CN117855843A CN 117855843 A CN117855843 A CN 117855843A CN 202410261533 A CN202410261533 A CN 202410261533A CN 117855843 A CN117855843 A CN 117855843A
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Abstract
The application provides a transmission array unit of ultra wide band wide phase shift scope belongs to the antenna field for solve the problem that current transmission array unit's working bandwidth is narrow. The antenna comprises a receiving antenna assembly, a transmitting antenna assembly and a phase shifter assembly; the receiving antenna assembly and the transmitting antenna assembly are two symmetrically arranged double-layer tightly coupled dipole antennas, and the phase shifter assembly comprises a first phase shifter, a second phase shifter and a third phase shifter which are sequentially connected; one end of the first phase shift line is connected with the receiving antenna assembly, one end of the third phase shift line is connected with the transmitting antenna assembly, and the second phase shift line is positioned between the receiving metal floor of the receiving antenna assembly and the transmitting metal floor of the transmitting antenna assembly. The receiving antenna assembly and the transmitting antenna assembly adopt double-layer tightly-coupled dipole antennas, so that the working bandwidth of the transmission array unit is expanded within a limited size; the second phase shift line in the phase shifter assembly is sealed between the two metal floors, so that the folding times can be increased for many times, and the phase shift range is greatly enlarged.
Description
Technical Field
The invention relates to the field of antennas, in particular to a transmission array unit with ultra-wideband and large phase shift range.
Background
With the development of communication technology, wireless communication systems require greater bandwidth to meet data growth and user demands, and thus multiple antennas are required to cover the desired frequency and spatial range. A single ultra-wideband beam scanning antenna can replace a multi-antenna system, and simultaneously meets the working requirements of multiple frequency bands, for example, one ultra-wideband antenna with the frequency of 2-18GHz can cover an S-band (2-4 GHz), a C-band (4-8 GHz), an X-band (8-12 GHz) and a Ku-band (12-18 GHz). The ultra-wideband beam scanning antenna is realized by a path feed array and a space feed array. A typical representation of the feed-by approach is a phased array antenna, however, ultra wideband phased array antennas require hundreds of T/R components, which not only are complex in structural design and antenna testing, but also are extremely costly. The air feed antenna is composed of a feed source and an array, a complex feed network is not needed, mechanical beam scanning can be realized in a passive mode, the processing cost can be greatly reduced, and the air feed antenna has unique advantages in practical application. However, due to the limited operating bandwidth and phase shifting characteristics of the phase shifting element, the conventional mechanical beam scanning transmission array antenna has a very narrow operating bandwidth (typically below 30%), and the element design of the ultra wideband beam scanning transmission array antenna is currently under study. On the other hand, most transmissive array antennas have a relatively high focal diameter, resulting in a relatively high profile, and in order to reduce the focal diameter ratio without sacrificing bandwidth, the phase shift range of the transmissive array element needs to be increased.
Disclosure of Invention
The invention aims to provide a transmission array unit with ultra-wideband and large phase shift range. The method is used for solving the problem of narrow working bandwidth of the conventional transmission array unit in the prior art.
An ultra-wideband large phase-shift range transmission array unit comprises a receiving antenna assembly, a transmitting antenna assembly and a phase shifter assembly for connecting the receiving antenna assembly and the transmitting antenna assembly;
the receiving antenna assembly and the transmitting antenna assembly are two symmetrically arranged double-layer tightly coupled dipole antennas, the phase shifter assembly comprises a phase shift line module, and the phase shift line module comprises a first phase shift line, a second phase shift line and a third phase shift line which are sequentially connected;
one end of the first phase shift line is connected with the receiving antenna assembly, one end of the third phase shift line is connected with the transmitting antenna assembly, and the second phase shift line is positioned between a receiving metal floor of the receiving antenna assembly and a transmitting metal floor of the transmitting antenna assembly.
Optionally, the first phase shifting line, the second phase shifting line and the third phase shifting line are all planar winding folding structures with transverse edges and vertical edges connected end to end in sequence.
Optionally, the phase shifter assembly further comprises a first dielectric substrate arranged along a vertical direction, and the receiving antenna assembly and the transmitting antenna assembly are respectively installed at the lower end and the upper end of the first dielectric substrate;
first installation draw-in groove has all been seted up on the both sides wall of first medium base plate lower part, two the receipt metal floor is embedded respectively and is installed in the first installation draw-in groove of both sides, the second installation draw-in groove has all been seted up on the both sides wall on first medium base plate upper portion, two the transmission metal floor is embedded respectively and is installed in the second installation draw-in groove of both sides, receipt metal floor and transmission metal floor all with first medium base plate sets up perpendicularly, it is parallel to receive metal floor and transmission metal floor each other.
Optionally, the receiving antenna assembly includes a receiving dielectric substrate, and two pairs of receiving patch modules symmetrically disposed about the first dielectric substrate;
the receiving patch module comprises an upper receiving patch and a lower receiving patch which are respectively arranged on the upper end face and the lower end face of the receiving medium substrate, and a plurality of first metal through holes for connecting the upper receiving patch and the lower receiving patch are formed in the receiving medium substrate.
Optionally, the transmitting antenna assembly includes a transmitting dielectric substrate, and two sets of transmitting patch modules symmetrically disposed about the first dielectric substrate;
the transmitting patch module comprises an upper transmitting patch and a lower transmitting patch which are respectively arranged on the upper end face and the lower end face of the transmitting medium substrate, and a plurality of second metal through holes for connecting the upper transmitting patch and the lower transmitting patch are formed in the transmitting medium substrate.
Optionally, two groups of phase-shifting line modules are respectively arranged on two side end surfaces of the first dielectric substrate, and the two groups of receiving patch modules and the two groups of transmitting patch modules are respectively connected through the two groups of phase-shifting line modules;
one end of the first phase shift line penetrates through the receiving medium substrate to be connected with the lower layer receiving patch, and one end of the third phase shift line penetrates through the transmitting medium substrate to be connected with the upper layer transmitting patch.
Optionally, the upper layer receiving patch and the lower layer transmitting patch are rectangular patches, and the lower layer receiving patch and the upper layer transmitting patch are rectangular chamfer patches.
Optionally, the phase shift value of the transmissive array unit is:
φ TA = φ t + φ r + φ ps
in phi t Is the phase shift value of the transmitting antenna assembly, phi r Is the phase shift value of the receiving antenna assembly, phi ps Is the phase shift value of the phase shifter assembly;
φ ps =-k（L 1 +(N 1 +N 2 +N 3 )L 2 ）
wherein k is the propagation constant of electromagnetic wave in the medium with central frequency, N 1 、N 2 And N 3 The folding times of the winding folding structures of the first phase shift line, the second phase shift line and the third phase shift line are respectively L 1 Is the vertical height of the phase shifter assembly, L 2 Level for phase shifter assemblyThe length in the direction.
Optionally, the materials of the first dielectric substrate, the receiving dielectric substrate and the transmitting dielectric substrate are Rogers RO4003C, the dielectric constant is 3.55, and the loss tangent is 0.0027.
Due to the adoption of the technical scheme, the invention has the following advantages:
the receiving antenna assembly and the transmitting antenna assembly adopt double-layer tightly-coupled dipole antennas, and the working bandwidth of the transmission array unit is greatly expanded within a limited size. The phase shifter assembly adopts parallel double microstrip lines and is divided into three sections of phase shifting lines, and as the second phase shifting line in the middle is sealed between two metal floors, the folding times can be increased for many times, and the phase shifting range can be greatly enlarged. The ultra-wideband wide-phase-shift-range transmission array unit can be used for low-cost low-profile ultra-wideband beam scanning transmission array antenna design.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
The drawings of the present invention are described below.
Fig. 1 is a schematic diagram of a transmissive array unit according to the present invention.
Fig. 2 is a front view of a transmissive array unit according to the present invention.
Fig. 3 is a schematic diagram of a phase shifter assembly according to the present invention.
Fig. 4 is a top view of a transmitting antenna assembly of the present invention.
Fig. 5 is a schematic structural diagram of a receiving dielectric substrate according to the present invention.
Fig. 6 is a schematic structural diagram of an emission medium substrate according to the present invention.
Fig. 7 is an equivalent circuit diagram of a dual layer close-coupled dipole antenna of the present invention.
Fig. 8 is a graph of simulated S11 for a dipole antenna dielectric substrate of the present invention as it changes in size.
Fig. 9 is a graph of simulated S11 for a dipole antenna patch of the present invention with varying edge-to-edge distances.
Fig. 10 is a graph of simulated S11 for a dipole antenna port of the present invention with varying impedance.
Fig. 11 is a graph of simulated S11 for the optimal dimensions of a dual layer tightly coupled dipole antenna of the present invention.
FIG. 12 shows the transmission coefficient of the transmission array unit according to the line width w of the phase shifter f Graph of the variation.
FIG. 13 shows the amplitude of transmission coefficient of a transmissive array unit according to the present invention 2 Graph of the variation.
FIG. 14 shows the transmission coefficient phase of the transmission array unit according to the L 2 Graph of the variation.
In the figure: 1-a receiving antenna assembly; 101-receiving a metal floor; 102-receiving a dielectric substrate; 103-upper layer receiving patches; 104-a lower layer receiving patch; 105-a first metal via; 106-a first rectangular through hole; a 2-transmit antenna assembly; 201-emitting a metal floor; 202-an emissive dielectric substrate; 203-an upper layer transmit patch; 204-a lower layer transmit patch; 205-second metal vias; 206-a second rectangular through hole; a 3-phase shifter assembly; 301-a first phasing line; 302-second phasing line; 303-third phasing line; 304-a first dielectric substrate; 305-a first mounting slot; 306-a second mounting clip slot; 307-rectangular bosses; dy is the length of the receiving medium substrate and the transmitting medium substrate; dx is the width of the receiving medium substrate and the transmitting medium substrate; l (L) 1 Height in vertical direction of the phase shifter assembly; l (L) 2 Length in the horizontal direction of the phase shifter assembly; w (w) f Strip widths for the first, second and third phasing lines 303; h is a tg The distance between the receiving medium substrate and the receiving metal floor and the distance between the transmitting medium substrate and the transmitting metal floor are the same; dL is the rectangular part length of the lower layer receiving patch and the upper layer transmitting patch; fL is the distance between the rear side of the upper layer receiving patch and the side wall of the receiving medium substrate and the distance between the rear side of the upper layer transmitting patch and the side wall of the transmitting medium substrate; port is the port impedance value.
Detailed Description
The invention is further described below with reference to the drawings and examples.
An ultra-wideband large phase shift range transmission array unit as shown in fig. 1, 2 and 3 comprises a receiving antenna assembly 1 and a transmitting antenna assembly 2, and a phase shifter assembly 3 for connecting the receiving antenna assembly 1 and the transmitting antenna assembly 2;
the receiving antenna assembly 1 and the transmitting antenna assembly 2 are two symmetrically arranged double-layer tightly coupled dipole antennas, the phase shifter assembly 3 comprises a phase shifter module, and the phase shifter module comprises a first phase shifter 301, a second phase shifter 302 and a third phase shifter 303 which are sequentially connected;
one end of the first phase shift line 301 is connected to the receiving antenna assembly 1, one end of the third phase shift line 303 is connected to the transmitting antenna assembly 2, and the second phase shift line 302 is located between the receiving metal floor 101 of the receiving antenna assembly 1 and the transmitting metal floor 201 of the transmitting antenna assembly 2.
In this embodiment, the receiving antenna assembly 1 receives an incident electromagnetic wave of a feed source and converts it into an electromagnetic signal on a phase-shift line; similarly, the transmitting antenna component 2 converts electromagnetic signals on the phase-shift line into emergent electromagnetic waves in free space; the phase shifter assembly 3 is responsible for providing a sufficient phase shift.
As shown in fig. 1, 2, 3 and 4, the first phasing line 301, the second phasing line 302 and the third phasing line 303 are all planar serpentine folded structures with transverse edges and vertical edges connected end to end in sequence.
In the present embodiment, the first phasing line 301, the second phasing line 302 and the third phasing line 303 are all implemented by parallel double wires etched on the first dielectric substrate 304, and since the second phasing line 302 is enclosed between the receiving metal floor 101 and the transmitting metal floor 201, the number of folding times of the meandering folding of the second phasing line 302 can be increased infinitely, since it does not interfere with other structures.
In this embodiment, the phase shift value of the transmissive array unit is:
φ TA = φ t + φ r + φ ps
in phi t Is the phase shift value phi of the transmitting antenna assembly 2 r Is the phase shift value phi of the receiving antenna assembly 1 ps Is the phase shift value of the phase shifter assembly 3;
φ ps =-k（L 1 +(N 1 +N 2 +N 3 )L 2 ）
wherein k is the propagation constant of electromagnetic wave in the medium with central frequency, N 1 、N 2 And N 3 The number of folds, L, of the serpentine folded structure of first phasing line 301, second phasing line 302, and third phasing line 303, respectively 1 Is the vertical height of the phase shifter assembly 3, L 2 Is the length of the phase shifter assembly 3 in the horizontal direction; the strip widths of the first phasing line 301, the second phasing line 302, and the third phasing line 303 are each w f . From the above, it can be seen that by continuously adjusting the length L 2 The phase shifter assembly 3 can continuously change the path length of the electromagnetic wave transmission, thereby achieving continuous phase shifting.
As shown in fig. 1, 2 and 3, the phase shifter assembly 3 further includes a first dielectric substrate 304 disposed along a vertical direction, and the receiving antenna assembly 1 and the transmitting antenna assembly 2 are respectively mounted at lower and upper ends of the first dielectric substrate 304;
first installation draw-in grooves 305 have all been seted up on the both sides wall of first dielectric substrate 304 lower part, two the receipt metal floor 101 is embedded respectively and is installed in the first installation draw-in groove 305 of both sides, second installation draw-in groove 306 has all been seted up on the both sides wall of first dielectric substrate 304 upper portion, two the transmission metal floor 201 is embedded respectively and is installed in the second installation draw-in groove 306 of both sides, receipt metal floor 101 and transmission metal floor 201 all with first dielectric substrate 304 sets up perpendicularly, receipt metal floor 101 is parallel to each other with transmission metal floor 201.
As shown in fig. 1, 2, 3, 4 and 5, the receiving antenna assembly 1 includes a receiving dielectric substrate 102, and two sets of receiving patch modules symmetrically disposed about the first dielectric substrate 304;
the receiving patch module comprises an upper receiving patch 103 and a lower receiving patch 104 which are respectively arranged on the upper end face and the lower end face of the receiving medium substrate 102, and a plurality of first metal through holes 105 for connecting the upper receiving patch 103 and the lower receiving patch 104 are formed in the receiving medium substrate 102.
As shown in fig. 1, 2, 3, 4 and 6, the transmitting antenna assembly 2 includes a transmitting dielectric substrate 202, and two sets of transmitting patch modules symmetrically disposed about the first dielectric substrate 304;
the transmitting patch module comprises an upper transmitting patch 203 and a lower transmitting patch 204 which are respectively arranged on the upper end face and the lower end face of the transmitting medium substrate 202, and a plurality of second metal through holes 205 for connecting the upper transmitting patch 203 and the lower transmitting patch 204 are formed in the transmitting medium substrate 202.
In this embodiment, the dipoles of the receiving antenna assembly 1 and the transmitting antenna assembly 2 are designed in a folded structure, that is, the upper layer receiving patch 103 and the lower layer receiving patch 104 are connected through the first metal through hole 105, and the upper layer transmitting patch 203 and the lower layer transmitting patch 204 are connected through the second metal through hole 205, so that the path length of the current is prolonged, and the working frequency is reduced within a limited size.
In this embodiment, the receiving antenna assembly 1 and the transmitting antenna assembly 2 are identical in size and symmetrically arranged, and two symmetrically arranged double-layer tightly coupled dipole antennas need to be designed under the cycle boundary, so that it is very important to determine the appropriate cycle size; in this embodiment, the lengths dy of the receiving dielectric substrate 102 and the transmitting dielectric substrate 202 are designed to be large in order to provide a space for the subsequent design of the phase shifter assembly 3, and the widths dx of the receiving dielectric substrate 102 and the transmitting dielectric substrate 202 are designed to be small in order to improve the oblique incidence performance.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, two sets of phase shift line modules are respectively disposed on two side end surfaces of the first dielectric substrate 304, and two sets of receiving patch modules and two sets of transmitting patch modules are respectively connected through two sets of phase shift line modules;
the front side of the upper layer receiving patch 103, the lower layer receiving patch 104, the upper layer transmitting patch 203 and the lower layer transmitting patch 204 near the first dielectric substrate 304 is defined, one end of the first phase shift line 301 passes through the receiving dielectric substrate 102 and is connected with the front side of the lower layer receiving patch 104, and one end of the third phase shift line 303 passes through the transmitting dielectric substrate 202 and is connected with the front side of the upper layer transmitting patch 203.
In this embodiment, rectangular bosses 307 are disposed on the upper and lower sidewalls of the first dielectric substrate 304, and a first rectangular through hole 106 and a second rectangular through hole 206 are respectively formed in the middle of the receiving dielectric substrate 102 and the transmitting dielectric substrate 202, and during installation, the rectangular bosses 307 on two sides are respectively inserted into the first rectangular through hole 106 and the second rectangular through hole 206, so as to implement installation of the first dielectric substrate 304, the receiving dielectric substrate 102 and the transmitting dielectric substrate 202.
In this embodiment, the materials of the first dielectric substrate 304, the receiving dielectric substrate 102 and the transmitting dielectric substrate 202 are Rogers RO4003C, the dielectric constant is 3.55, and the loss tangent is 0.0027.
In the present embodiment, the distances between the receiving dielectric substrate 102 and the receiving metal floor 101 and the distances between the transmitting dielectric substrate 202 and the transmitting metal floor 201 are all h tg Taking into account the distance h tg Limited, as shown in FIG. 1, the number of folds N of the first phasing line 301 is set 1 And the number N of folds of the third phasing line 303 2 Are all 2; setting the number of folds N of second phasing line 302 2 4.
As shown in fig. 1, 2, 3, 4, 5 and 6, the upper receiving patch 103 and the lower transmitting patch 204 are rectangular patches, and the lower receiving patch 104 and the upper transmitting patch 203 are rectangular chamfer patches.
In this embodiment, the front ends of the rectangular patches of the lower receiving patch 104 and the upper transmitting patch 203 are both provided with chamfers to form rectangular chamfer patches composed of front trapezoids and rear rectangles, the trapezoids of the lower receiving patch 104 are used for realizing the transition and matching between the lower receiving patch 104 and the port at one end of the first phase shift line 301, the trapezoids of the upper transmitting patch 203 are used for realizing the transition and matching between the upper transmitting patch 203 and the port at one end of the third phase shift line 303, and the rectangular parts of the rectangular chamfer patches are used for adjusting the working frequency and bandwidth of the antenna.
In this embodiment, the distances between the rear sides of the upper layer receiving patch 103 and the lower layer receiving patch 104 and the side wall of the receiving medium substrate 102 and the distances between the rear sides of the upper layer transmitting patch 203 and the lower layer transmitting patch 204 and the side wall of the transmitting medium substrate 202 are all equal to fL.
Simulation is carried out on the transmission array unit:
s1: the equivalent circuit of the double-layer tightly coupled dipole antenna of the receiving antenna assembly 1 and the transmitting antenna assembly 2 is as shown in fig. 7, the port 2 and the transmission line 1 represent free space, and the impedance is 377Ω; the transmission line 2 represents a distance h tg Typically 1/4 wavelength; the short road surface represents the receiving metal floor 101 or the transmitting metal floor 201, which can block the propagation of electromagnetic waves in this direction, and the radiation of the antenna can be equivalently the transmission of electromagnetic waves between the port 1 and the port 2.
The two lower receiving patches 104 of the receiving antenna assembly 1 or the two upper transmitting patches 203 of the transmitting antenna assembly 2 are equivalent to the inductance L 1 And L 2 The upper layer receiving patch 103 of the receiving antenna assembly 1 or the lower layer transmitting patch 204 of the transmitting antenna assembly 2 is equivalent to L 4 The first metal via 105 or the second metal via 205 is equivalent to L 3 Capacitance C 2 Representing the coupling between the upper and lower patches, capacitance C 1 And C 3 Representing the coupling between adjacent cells. As can be seen from the equivalent circuit, the key of the design of the double-layer tightly coupled dipole antenna is to adjust the inductance L 1 ~L 4 And capacitor C 1 ~C 3 The corresponding structures are sized so that the capacitance and inductance cancel each other, thereby achieving impedance matching in the ultra-wideband operating range.
As shown in fig. 8, the double-layer close-coupled dipole antenna has two resonance points, and the high-frequency resonance point becomes gradually lower when the lengths dy of the receiving dielectric substrate 102 and the transmitting dielectric substrate 202 are changed from 16mm to 20 mm; thus, the length dy affects the high frequency resonance point of the dual-layer tightly coupled dipole antenna.
As shown in fig. 9, the fixed length dy is unchanged, and when the distance fL increases from 0.2mm to 0.6mm, that is, the rectangular portion length dL of the rectangular chamfer patch of the double-layer tightly coupled dipole antenna decreases from 4.75 to 4.35, the low-frequency resonance point of the double-layer tightly coupled dipole antenna becomes high. Therefore, the length dL affects the low frequency resonance point.
As shown in fig. 10, when the port impedance port of the dual-layer close-coupled dipole antenna is changed from 50 ohms to 150 ohms, the bandwidth and reflection coefficient of the dual-layer close-coupled dipole antenna are greatly changed. Therefore, the optimal port impedance of the double-layer tightly coupled dipole antenna is 100 omega, and the optimal size of the dipole antenna is as follows after a plurality of rounds of iterative optimization: dy=16 mm, dx=12 mm, fl=0.4 mm. As shown in fig. 11, at the optimal size, the dipole antenna has S11 below-10 dB in the frequency range of 3.8ghz to 13.7ghz with respect to 113% of the bandwidth.
S2: to determine the linewidth w of the phase shifter f First, the case where the phase shifter is not folded in a straight line (the phase shifter assembly in fig. 1 is replaced with a straight line stripe for simulation) is simulated, and the simulation result is shown in fig. 12, when w f Since the transmission coefficient in the operating band gradually increases when the frequency is changed from 0.25mm to 0.65mm, the line width of the phase shifter is selected to be 0.65mm, and the impedance of the phase shifter is substantially equal to the impedance of the transmitting/receiving antenna.
From the phase-shift value phi of the transmissive array unit TA It can be seen that phi t And phi r Is fixed and does not have any effect on the performance of the array. The design of the transmission array unit mainly concerns the variable phase shift value, and the phase phi of the phase shifter needs to be adjusted in order to realize continuous phase regulation ps . According to phi ps As can be seen from the calculation formula of (2), the transverse length L of the phase shifter is continuously adjusted 2 Can realize the phase phi of the phase shifter ps Thereby realizing continuous regulation and control of the phase of the transmission array unit.
As shown in fig. 13, the frequency range of 4.68GHz~13.58 GHz relative bandwidth 97.5% is for different lengths L 2 The transmission coefficient of the transmission array unit is larger than-2 dB.
As shown in fig. 14, at a center frequency of 9GHz, the phase shift range of the transmissive array unit reaches 1051 °, and at a frequency range of 4.68GHz~13.58 GHz, the transmissive array unit can realize a linear phase shift characteristic.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (9)
1. The ultra-wideband large-phase-shift-range transmission array unit is characterized by comprising a receiving antenna assembly (1) and a transmitting antenna assembly (2), and a phase shifter assembly (3) for connecting the receiving antenna assembly (1) and the transmitting antenna assembly (2);
the receiving antenna assembly (1) and the transmitting antenna assembly (2) are two symmetrically arranged double-layer tightly-coupled dipole antennas, the phase shifter assembly (3) comprises a phase shifter module, and the phase shifter module comprises a first phase shifter (301), a second phase shifter (302) and a third phase shifter (303) which are sequentially connected;
one end of the first phase shift line (301) is connected with the receiving antenna assembly (1), one end of the third phase shift line (303) is connected with the transmitting antenna assembly (2), and the second phase shift line (302) is located between the receiving metal floor (101) of the receiving antenna assembly (1) and the transmitting metal floor (201) of the transmitting antenna assembly (2).
2. The ultra-wideband large phase shift range transmission array unit according to claim 1, wherein the first phase shift line (301), the second phase shift line (302) and the third phase shift line (303) are all planar serpentine folded structures with transverse edges and vertical edges connected end to end in sequence.
3. The ultra-wideband large phase shift range transmission array unit according to claim 1, wherein the phase shifter assembly (3) further comprises a first dielectric substrate (304) arranged along a vertical direction, and the receiving antenna assembly (1) and the transmitting antenna assembly (2) are respectively mounted at the lower and upper ends of the first dielectric substrate (304);
first installation draw-in groove (305) have all been seted up on the both sides wall of first dielectric substrate (304) lower part, two in first installation draw-in groove (305) of both sides are installed in the embedding respectively to receiving metal floor (101), second installation draw-in groove (306) have all been seted up on the both sides wall on first dielectric substrate (304) upper portion, two in second installation draw-in groove (306) of both sides are installed in the embedding respectively to transmitting metal floor (201), receiving metal floor (101) and transmitting metal floor (201) all with first dielectric substrate (304) set up perpendicularly, receiving metal floor (101) and transmitting metal floor (201) are parallel to each other.
4. A transmission array unit of ultra wideband large phase shift range according to claim 3, characterized in that the receiving antenna assembly (1) comprises a receiving dielectric substrate (102), and two sets of receiving patch modules symmetrically arranged about the first dielectric substrate (304);
the receiving patch module comprises an upper layer receiving patch (103) and a lower layer receiving patch (104) which are respectively arranged on the upper end face and the lower end face of the receiving medium substrate (102), and a plurality of first metal through holes (105) used for connecting the upper layer receiving patch (103) and the lower layer receiving patch (104) are formed in the receiving medium substrate (102).
5. The ultra-wideband large phase shift range transmission array unit of claim 4, wherein the transmitting antenna assembly (2) comprises a transmitting dielectric substrate (202) and two sets of transmitting patch modules symmetrically arranged about the first dielectric substrate (304);
the transmitting patch module comprises an upper transmitting patch (203) and a lower transmitting patch (204) which are respectively arranged on the upper end face and the lower end face of the transmitting medium substrate (202), and a plurality of second metal through holes (205) used for connecting the upper transmitting patch (203) and the lower transmitting patch (204) are formed in the transmitting medium substrate (202).
6. The ultra-wideband large-phase-shift-range transmission array unit according to claim 5, wherein two groups of phase shift line modules are respectively arranged on two side end surfaces of the first dielectric substrate (304), and two groups of receiving patch modules and two groups of transmitting patch modules are respectively connected through the two groups of phase shift line modules;
one end of the first phase shifting line (301) penetrates through the receiving medium substrate (102) to be connected with the lower layer receiving patch (104), and one end of the third phase shifting line (303) penetrates through the transmitting medium substrate (202) to be connected with the upper layer transmitting patch (203).
7. The ultra-wideband large phase shift range transmissive array unit of claim 6, wherein the upper layer receiving patch (103) and the lower layer transmitting patch (204) are rectangular patches, and the lower layer receiving patch (104) and the upper layer transmitting patch (203) are rectangular chamfer patches.
8. The ultra-wideband large phase shift range transmission array unit of claim 2, wherein the phase shift value of the transmission array unit is:
φ TA = φ t + φ r + φ ps
in phi t Is the phase shift value phi of the transmitting antenna component (2) r Is the phase shift value phi of the receiving antenna assembly (1) ps Is a phase shift value of the phase shifter assembly (3);
φ ps =-k（L 1 +(N 1 +N 2 +N 3 )L 2 ）
wherein k is the propagation constant of electromagnetic wave in the medium with central frequency, N 1 、N 2 And N 3 The folding times of the winding folding structure of the first phase shifter (301), the second phase shifter (302) and the third phase shifter (303) are respectively L 1 Is vertically high of the phase shifter assembly (3)Degree, L 2 Is the length of the phase shifter assembly (3) in the horizontal direction.
9. The ultra-wideband large phase shift range transmissive array unit of claim 6, wherein the first dielectric substrate (304), the receiving dielectric substrate (102) and the transmitting dielectric substrate (202) are all Rogers RO4003C, have a dielectric constant of 3.55, and have a loss tangent of 0.0027.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410261533.9A CN117855843A (en) | 2024-03-07 | 2024-03-07 | Ultra-wideband large-phase-shift-range transmission array unit |
Applications Claiming Priority (1)
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| CN113224525A (en) * | 2021-05-31 | 2021-08-06 | 浙江嘉科电子有限公司 | High-gain dual-frequency omnidirectional antenna for 5G communication |
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| CN220341510U (en) * | 2023-07-21 | 2024-01-12 | 重庆两江卫星移动通信有限公司 | Broadband polarized tightly-coupled dipole transmission array antenna |
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| CN113224525A (en) * | 2021-05-31 | 2021-08-06 | 浙江嘉科电子有限公司 | High-gain dual-frequency omnidirectional antenna for 5G communication |
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| CN116315659A (en) * | 2023-03-29 | 2023-06-23 | 西安电子科技大学 | Ultra-wideband tight coupling wide-angle scanning transmission array antenna |
| CN220341510U (en) * | 2023-07-21 | 2024-01-12 | 重庆两江卫星移动通信有限公司 | Broadband polarized tightly-coupled dipole transmission array antenna |
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