Dual-polarized dual-frequency full-duplex Fabry-Perot antenna

Abstract

The invention discloses a dual-polarization dual-frequency full-duplex Fabry-Perot antenna which comprises a supporting mechanism, a partial reflection mechanism and a feed source mechanism. The partial reflection mechanism comprises a liquid metal container and a middle reflection medium substrate, and a microfluid channel array is arranged in the liquid metal container; the microfluid channel array comprises a first liquid metal channel arranged in the first direction and a second liquid metal channel arranged in the second direction, and liquid metal is injected into different areas of the first liquid metal channel and the second liquid metal channel respectively, so that the signal transmitting direction and the signal receiving direction of the full-duplex antenna are changed. According to the invention, independent wave beam reconfiguration under two polarization modes of dual-band vertical polarization and horizontal polarization is realized in the same aperture by injecting / emptying the liquid metal in different areas, the integration of full-duplex antenna functions is improved, and the temperature application range of the liquid metal is far beyond that of other liquid antennas. The method is suitable for detection and communication in high-latitude areas or deserts and other areas.

Description

Technical Field

[0001] The present invention relates to the technical field of full-duplex reconfigurable antennas, and particularly to a dual-polarization dual-frequency full-duplex Fabry-Perot antenna. Background Art

[0002] Full-duplex antennas usually use two antennas operating at the same frequency, one for transmission and the other for reception. After the transmitting antenna sends out a signal, the signal will be reflected back and thus received by the receiving antenna. To avoid interference between the transmitted signal and the received signal, full-duplex antennas usually adopt the reverse polarization technique, that is, the polarization directions of the transmitting antenna and the receiving antenna are opposite.

[0003] Currently, for traditional full-duplex antennas, to separately control the directions of the transmitted signal and the received signal, generally, each element in the antenna array needs to be configured with an independent feeding channel, and then a power divider is used to distribute the input signal to each element, and a phase shifter is used to adjust the phase to control the wave velocity direction.

[0004] However, the above-mentioned method of separately controlling the directions of the transmitted signal and the received signal requires the introduction of a complex feeding structure, resulting in a more complex processing procedure. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a dual-polarization dual-frequency full-duplex Fabry-Perot antenna, aiming to solve the problem that in current traditional full-duplex antennas, the method of separately controlling the directions of the transmitted signal and the received signal requires the introduction of a complex feeding structure, resulting in a more complex processing procedure.

[0006] To achieve the above purpose, the present invention is realized through the following technical solutions: A dual-polarization dual-frequency full-duplex Fabry-Perot antenna, characterized in that the dual-polarization dual-frequency full-duplex Fabry-Perot antenna includes a support mechanism, a partial reflection mechanism and a feed source mechanism respectively arranged at both ends of the support assembly;

[0007] The partial reflection mechanism includes a liquid metal container and an intermediate reflection dielectric substrate attached to the liquid metal container, and a microfluidic channel array is provided in the liquid metal container;

[0008] Wherein, the microfluidic channel array includes a first liquid metal channel arranged along a first direction and a second liquid metal channel arranged along a second direction, the first direction and the second direction are perpendicular to each other, and liquid metal is injected into different regions of the first liquid metal channel and the second liquid metal channel respectively to change the directions of the transmitted signal and the received signal of the full-duplex antenna.

[0009] According to one aspect of the above technical solution, the liquid metal container includes a packaging upper cover plate, a packaging lower cover plate, and a groove stereotype container disposed between the packaging upper cover plate and the packaging lower cover plate, and the microfluidic channel array is disposed on the upper and lower end faces of the groove stereotype container.

[0010] According to one aspect of the above technical solution, the first liquid metal channel and the second liquid metal channel are respectively disposed on the upper and lower end faces of the groove stereotype container, and both the first liquid metal channel and the second liquid metal channel include an equal number of independent channels;

[0011] Any independent channel of the first liquid metal channel includes a plurality of annular first flow units, and any independent channel of the second liquid metal channel includes a plurality of rectangular second flow units, and the number of the first flow units and the second flow units is equal.

[0012] According to one aspect of the above technical solution, the intermediate reflection medium substrate is disposed on a side of the packaging lower cover plate away from the groove stereotype container, and partial upper reflection metal surfaces and partial lower reflection metal surfaces are respectively disposed on the upper and lower end faces of the intermediate reflection medium substrate, and the partial upper reflection metal surface is disposed between the intermediate reflection medium substrate and the groove stereotype container.

[0013] According to one aspect of the above technical solution, the partial upper reflection metal surface includes a first patch and a second patch arranged in a periodic alternating manner, and a plurality of the second patches surround any first patch, and the same number of the first patches surround any second patch.

[0014] According to one aspect of the above technical solution, the feed mechanism includes a feed carrier assembly, a dual-polarization feed disposed on the feed carrier assembly, and a parasitic component disposed on the dual-polarization feed.

[0015] According to one aspect of the above technical solution, the feed carrier assembly includes a feed upper dielectric substrate, a feed lower dielectric substrate, and an intermediate metal floor disposed between the feed upper dielectric substrate and the feed lower dielectric substrate, and two "I"-shaped slots are etched on the intermediate metal floor.

[0016] According to one aspect of the above technical solution, the dual-polarization feed includes a microstrip patch antenna disposed between the feed upper dielectric substrate and the parasitic component, and a microstrip slot reflection antenna disposed on a side of the feed lower dielectric substrate away from the intermediate metal floor, the microstrip patch antenna is arranged along a first direction, and the microstrip slot reflection antenna is arranged along a second direction.

[0017] According to one aspect of the above technical solution, the parasitic component is arranged between the microstrip patch antenna and a partial lower reflective metal surface, and the parasitic component includes a parasitic patch arranged on the microstrip patch antenna and a coupled reflective dielectric plate arranged on the parasitic patch.

[0018] According to one aspect of the above technical solution, the packaging upper cover plate, the groove plate container, the packaging lower cover plate, the intermediate reflective dielectric substrate, the feed upper dielectric substrate, the intermediate metal floor, and the feed lower dielectric substrate are all square dielectric plates with the same side lengths.

[0019] In summary, according to a dual-polarization dual-frequency full-duplex Fabry-Perot antenna proposed by the present invention, when liquid metal is injected or extracted into different areas of the first liquid metal channel or the second liquid metal channel, the reflected signal forms a phase difference, thereby realizing independent beam reconfiguration in two polarization modes of dual-band vertical polarization and horizontal polarization. Due to symmetry, the two polarization states of the antenna have differences in phase response to the first liquid metal channel and the second liquid metal channel, which leads to changes in the direction of the full-duplex antenna receiving and transmitting signals, and realizes independent regulation of beams of different polarizations. In addition, the dual-polarization feed source shares the middle metal floor and the parasitic component, and two "I"-shaped gaps are etched on the middle metal floor. The electromagnetic energy is radiated through the feeder short-circuit port, resonates with the "I"-shaped gap, and couples with the parasitic patch and the coupling reflective dielectric plate above, producing dual-frequency and high isolation characteristics. In addition, the support mechanism uses a low dielectric constant nylon column to form a Fabry-Perot resonant cavity between the middle reflective dielectric substrate and the middle metal floor to achieve multiple oscillations of electromagnetic waves. The present invention realizes independent beam reconfiguration in dual-band vertical polarization and horizontal polarization within the same aperture by injecting / draining liquid metal in different areas, thereby improving the integration of full-duplex antenna functions. The temperature application range of liquid metal far exceeds that of other liquid antennas, and is suitable for detection and communication in high-latitude areas or deserts.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or may be learned through practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a dual-polarization dual-frequency full-duplex Fabry-Perot antenna in Embodiment 1 of the present invention;

[0022] Figure 2 An exploded schematic diagram of a dual-polarization dual-frequency full-duplex Fabry-Perot antenna in Embodiment 1 of the present invention;

[0023] Figure 3Schematic diagram of the structure of the first liquid metal channel in Embodiment 1 of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the second liquid metal channel in Embodiment 1 of the present invention;

[0025] Figure 5 Schematic diagram of the structure of a partial upper reflective metal surface in Embodiment 1 of the present invention;

[0026] Figure 6 Schematic diagram of the structure of a partial lower reflective metal surface in Embodiment 1 of the present invention;

[0027] Figure 7 Schematic diagram of the structure of a parasitic component in Embodiment 1 of the present invention;

[0028] Figure 8 Assembly schematic diagram of the microstrip slot reflective antenna and the upper dielectric substrate of the feed in Embodiment 1 of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the intermediate metal floor in Embodiment 1 of the present invention;

[0030] Figure 10 Assembly schematic diagram of the microstrip slot reflective antenna and the lower dielectric substrate of the feed in Embodiment 1 of the present invention;

[0031] Figure 11 Simulated reflection coefficient curve generated at a simulation frequency of 4 GHz - 6 GHz in Embodiment 2 of the present invention;

[0032] Figure 12 Actual gain - angle broken line graph of the second liquid metal channel filled with liquid metal at 4.6 GHz in Embodiment 2 of the present invention;

[0033] Figure 13 Actual gain - angle broken line graph of the second liquid metal channel filled with liquid metal at 5.4 GHz in Embodiment 2 of the present invention;

[0034] Figure 14 Actual gain - angle broken line graph of the first liquid metal channel filled with liquid metal at 4.6 GHz in Embodiment 2 of the present invention;

[0035] Figure 15 Actual gain - angle broken line graph of the first liquid metal channel filled with liquid metal at 5.4 GHz in Embodiment 2 of the present invention.

[0036] Explanation of the symbols of the components in the drawings:

[0037] Upper cover plate 1 of the package, first liquid metal channel 2, grooved stereotype container 3, second liquid metal channel 4, lower cover plate 5 of the package, partial upper reflective metal surface 6, intermediate reflective dielectric substrate 7, partial lower reflective metal surface 8, coupled reflective dielectric plate 9, parasitic patch 10, microstrip patch antenna 11, upper dielectric substrate 12 of the feeder, intermediate metal floor 13, lower dielectric substrate 14 of the feeder, microstrip slot reflective antenna 15, first support member 16, second support member 17. Detailed implementation mode

[0038] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0039] It should be noted that when an element is referred to as being "fixed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0041] Embodiment 1

[0042] Please refer to Figures 1-10 , which shows a schematic structural diagram of a dual-polarization dual-frequency full-duplex Fabry-Perot antenna provided in Embodiment 1 of the present invention. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna includes a support mechanism, partial reflection mechanisms and a feeder mechanism respectively arranged at both ends of the support assembly, wherein:

[0043] With the continuous innovation and progress in the material field, a liquid metal - gallium indium tin alloy with a melting point as low as minus 28 degrees Celsius has been developed. With its fluidity and low melting point characteristics, it can meet the vast majority of application scenarios of antennas and has become a candidate material for constructing reconfigurable antennas. Different from traditional full-duplex antennas, the present invention combines a liquid-based structure and enriches the reconfigurable functions of full-duplex antennas.

[0044] In this embodiment, the partial reflection mechanism includes a liquid metal container and an intermediate reflection medium substrate 7 attached to the liquid metal container. A microfluidic channel array is provided in the liquid metal container. The liquid metal container includes a packaging upper cover plate 1, a packaging lower cover plate 5, and a grooved stereotype container 3 disposed between the packaging upper cover plate 1 and the packaging lower cover plate 5. The microfluidic channel array is disposed on the upper and lower end faces of the grooved stereotype container 3.

[0045] In order to change the direction of the full-duplex antenna for receiving and transmitting signals and realize independent control of beams with different polarizations, the microfluidic channel array includes a first liquid metal channel 2 arranged in a first direction and a second liquid metal channel 4 arranged in a second direction, and the first direction and the second direction are perpendicular to each other. The first liquid metal channel 2 and the second liquid metal channel 4 are respectively disposed on the upper and lower end faces of the grooved stereotype container 3. In this embodiment, both the first liquid metal channel 2 and the second liquid metal channel 4 include 10 independent channels.

[0046] Furthermore, any one of the independent channels of the first liquid metal channel 2 includes a plurality of annular first flow units, and any one of the independent channels of the second liquid metal channel 4 includes a plurality of rectangular second flow units. The number of the first flow units and the second flow units is equal, and both are 10. The first flow units and / or the second flow units are all connected through flow channels so that the liquid metal can fill the independent channels.

[0047] When liquid metal is injected into different regions of the first liquid metal channel 2 and the second liquid metal channel 4, a phase difference is formed in the reflected signal, thereby realizing two-dimensional reconfigurability of the beam direction. Due to symmetry, the phase responses of the two polarization states of the antenna to the first liquid metal channel 2 and the second liquid metal channel 4 are different, resulting in a change in the direction of the full-duplex antenna for receiving and transmitting signals.

[0048] When liquid metal is filled into the 10 independent channels in the first liquid metal channel 2, the reflection phase of the PRS changes, the vertically polarized beam deflects towards the filled part, and the horizontally polarized beam remains unchanged, realizing the beam control of the transmitted signal or the received signal line; when liquid metal is filled into the 10 independent channels in the second liquid metal channel 4, the reflection phase of the PRS changes, the horizontally polarized beam deflects towards the filled part, and the horizontally polarized beam remains unchanged, realizing the beam control of the transmitted signal or the received signal.

[0049] Furthermore, when the five independent channels in the left half region or the five independent channels in the right half region of the first liquid metal channel 2 are filled with liquid metal and the second liquid metal channel 4 is not filled, the radiation pattern of the microstrip patch antenna 11 deflects by the largest angle and has almost no influence on the radiation pattern of the other polarization. Similarly, when the five independent channels in the left half region or the five independent channels in the right half region of the second liquid metal channel 4 are filled with liquid metal and the first liquid metal channel 2 is not filled, the radiation pattern of the microstrip slot reflector antenna 15 deflects by the largest angle and has almost no influence on the radiation pattern of the other polarization.

[0050] It should be noted that the upper encapsulation cover 1, the lower encapsulation cover 5, and the groove stereotype container 3 are in direct contact and can be glued together with glue. Two layers of injection valves can be provided in the liquid metal container and the valves are connected to a microfluidic syringe. The microfluidic syringe can be used to inject / discharge liquid metal into / from the independent channels of the first liquid metal channel 2 and / or the second liquid metal channel 4. The filling method of the liquid metal can be to fill all of the single row or single column, so as to realize independent regulation of the signal receiving and signal transmitting beams of the full-duplex antenna, replacing the complex feeding structure used in the traditional full-duplex antenna to separately adjust the directions of the transmitted signal and the received signal, simplifying the adjustment method and improving the adjustment efficiency.

[0051] In order to realize the simultaneous operation of dual polarization at low frequencies and dual frequencies, the intermediate reflective dielectric substrate 7 is arranged on the side of the lower encapsulation cover 5 away from the groove stereotype container 3. Partial upper reflective metal surfaces 6 and partial lower reflective metal surfaces 8 are respectively arranged on the upper and lower end faces of the intermediate reflective dielectric substrate 7. The partial upper reflective metal surface 6 is arranged between the intermediate reflective dielectric substrate 7 and the groove stereotype container 3. The partial upper reflective metal surface 6 includes a first patch and a second patch arranged in a periodic and alternating manner. A plurality of second patches surround any first patch, and the same number of first patches surround any second patch. The partial lower reflective metal surface 8 is formed by connecting third patches in sequence to cover the lower surface of the intermediate reflective dielectric substrate 7. It should be emphasized that the first patch is a square patch, and the second patch and the third patch are both cross-shaped.

[0052] To improve signal stability and enhance transceiver isolation, the feed mechanism includes a feed carrier component, a dual-polarized feed disposed on the feed carrier component, and a parasitic component disposed on the dual-polarized feed. The feed carrier component includes an upper feed dielectric substrate 12, a lower feed dielectric substrate 14, and an intermediate metal floor 13 disposed between the upper feed dielectric substrate 12 and the lower feed dielectric substrate 14. Two "I"-shaped slots are etched on the intermediate metal floor 13. The dual-polarized feed includes a microstrip patch antenna 11 disposed between the upper feed dielectric substrate 12 and the parasitic component, and a microstrip slot reflector antenna 15 disposed on the side of the lower feed dielectric substrate 14 away from the intermediate metal floor 13. The microstrip patch antenna 11 is arranged along a first direction, and the microstrip slot reflector antenna 15 is arranged along a second direction. The parasitic component is disposed between the microstrip patch antenna 11 and a partial lower reflective metal surface 8, and the parasitic component includes a parasitic patch 10 disposed on the microstrip patch antenna 11 and a coupled reflection dielectric plate 9 disposed on the parasitic patch 10.

[0053] In this embodiment, the microstrip slot reflector antenna 15 adopts a Wilkinson equal-power splitter. Electromagnetic energy is radiated through the feeder short-circuit port, resonates with the two "I"-shaped slots etched on the intermediate metal floor 13, and is coupled with the upper parasitic patch 10 and the coupled reflection dielectric plate 9 to generate dual-band and high isolation characteristics.

[0054] According to one aspect of the above technical solution, the support mechanism includes a first support member 16 disposed between the upper feed dielectric substrate 12 and a partial lower reflective metal surface 8, and a second support member 17 disposed between the coupled reflection dielectric plate 9 and the upper feed dielectric substrate 12. The first support member 16 and the second support member 17 can adopt low-dielectric-constant nylon columns to form a Fabry-Perot resonator cavity between the intermediate reflection dielectric substrate 7 and the intermediate metal floor 13 to realize multiple oscillations of electromagnetic waves.

[0055] In summary, according to a dual-polarization dual-frequency full-duplex Fabry-Perot antenna proposed by the present invention, when liquid metal is injected or extracted into different areas of the first liquid metal channel or the second liquid metal channel, the reflected signal forms a phase difference, thereby realizing independent beam reconfiguration in two polarization modes of dual-band vertical polarization and horizontal polarization. Due to symmetry, the two polarization states of the antenna have differences in phase response to the first liquid metal channel and the second liquid metal channel, which leads to changes in the direction of the full-duplex antenna receiving and transmitting signals, and realizes independent regulation of beams of different polarizations. In addition, the dual-polarization feed source shares the middle metal floor and the parasitic component, and two "I"-shaped gaps are etched on the middle metal floor. The electromagnetic energy is radiated through the feeder short-circuit port, resonates with the "I"-shaped gap, and couples with the parasitic patch and the coupling reflective dielectric plate above, producing dual-frequency and high isolation characteristics. In addition, the support mechanism uses a low dielectric constant nylon column to form a Fabry-Perot resonant cavity between the middle reflective dielectric substrate and the middle metal floor to achieve multiple oscillations of electromagnetic waves. The present invention realizes independent beam reconfiguration in dual-band vertical polarization and horizontal polarization within the same aperture by injecting / draining liquid metal in different areas, thereby improving the integration of full-duplex antenna functions. The temperature application range of liquid metal far exceeds that of other liquid antennas, and is suitable for detection and communication in high-latitude areas or deserts.

[0056] Embodiment 2

[0057] Specifically, in order to verify the dual-polarization dual-frequency full-duplex Fabry-Perot antenna proposed in the first embodiment, this embodiment uses simulation software to perform modeling simulation.

[0058] In this embodiment, the thickness H1 of the package upper cover plate 1 is 1 mm, the thickness of the first liquid metal channel 2 is 0.5 mm, the thickness H2 of the groove engraved container 3 is 4 mm, the thickness of the second liquid metal channel 4 is 0.5 mm, the thickness H3 of the package lower cover plate 5 is 2 mm, the thickness H4 of the intermediate reflection dielectric substrate 7 is 1 mm, the thickness of the coupling reflection dielectric plate 9 is 0.8 mm, the thickness of the feed source upper dielectric substrate 12 and the thickness of the feed source lower dielectric substrate 14 are both 0.5 mm, the height H5 between the intermediate reflection dielectric substrate 7 and the feed source upper dielectric substrate 12 is 29 mm-30 mm, and the height H6 between the coupling reflection dielectric plate 9 and the feed source upper dielectric substrate 12 is 3 mm.

[0059] In the first flow unit, the outer ring width a2 is 6 mm, the inner ring width b2 is 2 mm, and the channel width connecting adjacent first flow units is 1 mm; the width a of the second flow unit is 6 mm, and the period size p is 12 mm.

[0060] In the partial upper reflective metal surface 6, the width c of the first patch is 6 mm, the second patch is a cross-shaped patch, the cross width is 3 mm, the length d is 9 mm, and the arrangement period of the first patch and the second patch is equal to the period size of the second circulation unit, both being 12 mm. In the partial lower reflective metal surface 8, the width e of the third patch is 3 mm, and the length is equal to the arrangement period of the first patch and the second patch and the period size of the second circulation unit, also being 12 mm.

[0061] In the parasitic components, the parasitic patch 10 is square, the length w7 is 22 mm, the coupling reflective dielectric plate 9 is rectangular, the length w8 is 35 mm, and the width w7 is 22 mm.

[0062] The microstrip patch antenna 11 operates in the vertical linear polarization mode, is orthogonal to the second liquid metal channel 4 at 90°, and the radiation pattern direction of the microstrip patch antenna 11 can be adjusted by changing the filling distribution mode of the second liquid metal channel 4. l1 is 17.7 mm, l2 is 18.5 mm, l3 is 37.65 mm, w1 is 15.5 mm, w2 is 0.8 mm, and w3 is 1.45 mm.

[0063] In the intermediate metal floor 13, s1 is 1.45 mm, s2 is 0.3 mm, s3 is 3.8 mm, s4 is 6.5 mm, and s5 is 2.5 mm.

[0064] The microstrip slot reflective antenna 15 operates in the vertical linear polarization mode, is orthogonal to the first liquid metal channel 2 at 90°, and the radiation pattern direction of the microstrip slot reflective antenna 15 can be adjusted by changing the filling distribution mode of the first liquid metal channel 2. L4 is 15.5 mm, l5 is 14.5 mm, l6 is 46 mm, w4 is 1.4 mm, w5 is 1.4 mm, and w6 is 1.2 mm.

[0065] The encapsulation upper cover plate 1, the groove stereotype container 3, the encapsulation lower cover plate 5, the intermediate reflective dielectric substrate 7, the feed upper dielectric substrate 12, the intermediate metal floor 13, and the feed lower dielectric substrate 14 all adopt square dielectric plates, and the side lengths are the same, all being 130 mm.

[0066] Based on the above simulation conditions, the simulation frequency is set to 4 GHz - 6 GHz, and a reflection coefficient simulation curve graph is generated. As Figure 11 shown, when the frequency is in the ranges of 4.56 GHz to 4.65 GHz and 5.29 GHz to 5.52 GHz, the reflection coefficients are all less than -10 dBi, and the isolation degrees are all below -50 dB, meeting the full-duplex application requirements, and the relative impedance bandwidths can be obtained as 2.0% and 4.3% respectively.

[0067] When the 1-5 independent channels or 6-10 independent channels of the second liquid metal channel 4 are partially filled with liquid metal, the radiation pattern of the vertically polarized microstrip slot reflector antenna 15 is regulated. Figure 12 And Figure 13 are the simulated horizontal plane radiation patterns and vertical plane radiation patterns at 4.6 GHz and 5.4 GHz respectively. It can be seen that in the present invention, at 4.6 GHz, the deviation angle of the horizontally polarized beam is about ±24°, the deviation angle of the vertically polarized beam is about 0°, and the maximum gains are 12.8 dBi and 14 dBi respectively; at 5.4 GHz, the deviation angle of the horizontally polarized beam is about ±16°, the deviation angle of the vertically polarized beam is about 0°, and the maximum gains are 12 dBi and 14.1 dBi respectively, which proves that the proposed antenna has good radiation and deflection characteristics. In addition, the cross polarization of this antenna is lower than -30 dB in both the horizontal plane and the vertical plane.

[0068] When the 1-5 independent channels or 6-10 independent channels of the first liquid metal channel 2 are partially filled with liquid metal, the radiation pattern of the horizontally polarized microstrip patch antenna 11 is regulated. Figure 14 And Figure 15 are the simulated horizontal plane radiation patterns and vertical plane radiation patterns at 4.6 GHz and 5.4 GHz respectively. It can be seen that in the present invention, at 4.6 GHz, the deviation angle of the vertically polarized beam is about ±25°, the deviation angle of the horizontally polarized beam is about 0°, and the maximum gains are 11.6 dBi and 13.7 dBi respectively; at 5.4 GHz, the deviation angle of the vertically polarized beam is about ±18°, the deviation angle of the horizontally polarized beam is about 0°, and the maximum gains are 13.1 dBi and 15 dBi respectively. In addition, the cross polarization of this antenna is lower than -30 dB in both the horizontal plane and the vertical plane.

[0069] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0070] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A dual-polarization dual-frequency full-duplex Fabry-Perot antenna, characterized in that The dual-polarization dual-frequency full-duplex Fabry-Perot antenna includes a support mechanism, a partial reflection mechanism and a feed source mechanism respectively arranged at two ends of the support assembly; The partial reflection mechanism includes a liquid metal container and an intermediate reflection dielectric substrate attached to the liquid metal container. A microfluidic channel array is arranged in the liquid metal container; Wherein, the microfluidic channel array includes a first liquid metal channel arranged along a first direction and a second liquid metal channel arranged along a second direction. The first direction and the second direction are perpendicular to each other. Liquid metal is injected into different regions of the first liquid metal channel and the second liquid metal channel respectively to change the direction of the signal transmitted by the full-duplex antenna and the direction of the received signal.

2. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna according to claim 1, wherein The liquid metal container includes a packaging upper cover plate, a packaging lower cover plate, and a groove engraving container arranged between the packaging upper cover plate and the packaging lower cover plate. The microfluidic channel array is arranged on the upper and lower end faces of the groove engraving container.

3. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna according to claim 2, characterized in that, The first liquid metal channel and the second liquid metal channel are respectively arranged on the upper and lower end faces of the groove engraving container. Both the first liquid metal channel and the second liquid metal channel include an equal number of independent channels; Any independent channel of the first liquid metal channel includes a plurality of annular first flow units, and any independent channel of the second liquid metal channel includes a plurality of rectangular second flow units. The number of the first flow units and the second flow units is equal.

4. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna according to claim 1, wherein The intermediate reflection dielectric substrate is arranged on the side of the packaging lower cover plate away from the groove engraving container. Partial upper reflection metal surfaces and partial lower reflection metal surfaces are respectively arranged on the upper and lower end faces of the intermediate reflection dielectric substrate. The partial upper reflection metal surface is arranged between the intermediate reflection dielectric substrate and the groove engraving container.

5. The dual-polarized dual-band full-duplex Fabry-Perot antenna according to claim 4, wherein The partial upper reflection metal surface includes a first patch and a second patch arranged in a periodic alternating manner. A certain number of second patches surround any first patch, and the same number of first patches surround any second patch.

6. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna according to claim 1, characterized in that, The feed source mechanism includes a feed source bearing assembly, a dual-polarization feed source arranged on the feed source bearing assembly, and a parasitic assembly arranged on the dual-polarization feed source.

7. The dual-polarization dual-band full-duplex Fabry-Perot antenna according to claim 6, wherein The feed source bearing assembly includes a feed source upper dielectric substrate, a feed source lower dielectric substrate, and an intermediate metal floor arranged between the feed source upper dielectric substrate and the feed source lower dielectric substrate. Two "I"-shaped slits are etched on the intermediate metal floor.

8. The dual-polarization dual-band full-duplex Fabry-Perot antenna according to claim 7, characterized in that The dual-polarization feed source includes a microstrip patch antenna arranged between the feed source upper dielectric substrate and the parasitic assembly, and a microstrip slot reflection antenna arranged on the side of the feed source lower dielectric substrate away from the intermediate metal floor. The microstrip patch antenna is arranged along the first direction, and the microstrip slot reflection antenna is arranged along the second direction.

9. The dual-polarization dual-frequency full-duplex Fabry-Perot antenna according to claim 8, wherein The parasitic assembly is arranged between the microstrip patch antenna and the partial lower reflection metal surface. The parasitic assembly includes a parasitic patch arranged on the microstrip patch antenna and a coupling reflection dielectric plate arranged on the parasitic patch.

10. The dual-polarized dual-band full-duplex Fabry-Perot antenna according to any one of claims 1-9, characterized in that, The encapsulation upper cover plate, the groove stereotype container, the encapsulation lower cover plate, the intermediate reflection medium substrate, the feed upper layer medium substrate, the intermediate metal floor, and the feed lower layer medium substrate are all made of square dielectric plates with the same side length.

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