Signal radiating device and antenna structure

Abstract

This invention discloses a signal radiating device and antenna structure. The signal radiating device includes a first signal radiator, a second signal radiator, and a reflective signal radiator. The first signal radiator is used to transmit and receive a first signal in a first direction. The second signal radiator is overlapped with the first signal radiator and is used to transmit and receive at least one second signal in a second direction and / or a third direction. The first direction, second direction, and third direction are different. The reflective signal radiator is disposed between the first and second signal radiators and is used to transmit and receive a third signal in all directions. The frequency band of the third signal is lower than the frequency bands of the first and second signals.

Description

Technical Field

[0001] This invention relates to a signal radiating device and antenna structure, and more specifically to a signal radiating device and antenna structure capable of frequency division and multitasking. Background Technology

[0002] With the advancement of electronic technology and the advent of the information age, wireless communication has become an essential capability for electronic devices.

[0003] To improve the communication bandwidth of electronic devices, the application of frequency division multiplexing has become an inevitable trend. In the current technology field, antenna devices are often designed with linearly polarized wave antennas, and they are mainly based on the broadside and endfire modes, without incorporating circularly polarized wave designs. Summary of the Invention

[0004] This invention relates to a signal radiating device and antenna structure that can provide multi-radio frequency signal transmission and reception and realize frequency division multitasking applications.

[0005] According to an embodiment of the present invention, the signal radiating device includes a first signal radiator, a second signal radiator, and a reflective signal radiator. The signal radiator is used to transmit and receive a first signal in a first direction. The second signal radiator is overlapped with the first signal radiator and is used to transmit and receive at least one second signal in a second direction and / or a third direction. The first direction, the second direction, and the third direction are different. The reflective signal radiator is disposed between the first signal radiator and the second signal radiator and is used to transmit and receive a third signal in all directions. The frequency band of the third signal is lower than the frequency bands of the first signal and the second signal.

[0006] According to an embodiment of the present invention, the antenna structure includes a plurality of signal radiating devices as described above. The signal radiating devices are coupled to each other.

[0007] Based on the above, the signal radiating device of the present invention has multiple signal radiators that perform transmission and reception operations for signals in different directions, and a reflective signal radiator capable of transmitting and receiving signals in all directions. This enables the antenna device to operate at multiple frequencies and provide multiple radio frequency signals to achieve frequency division multiplexing functionality. Attached Figure Description

[0008] The accompanying drawings are included to further illustrate the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0009] Figure 1 This is a schematic diagram of a signal radiation device according to an embodiment of the present invention;

[0010] Figure 2 This is a side view of a signal radiating device according to an embodiment of the present invention;

[0011] Figure 3 This is a top view of a signal radiating device according to an embodiment of the present invention;

[0012] Figures 4A to 4D These are schematic diagrams illustrating different embodiments of the first signal radiator according to an example of the present invention;

[0013] Figures 5A to 5C These are schematic diagrams illustrating different embodiments of the second signal radiator according to an example of the present invention;

[0014] Figure 6 These are schematic diagrams illustrating different embodiments of the reflective signal radiator of the present invention;

[0015] Figure 7 This is a schematic diagram of an antenna structure according to an embodiment of the present invention;

[0016] Figure 8 This is a schematic diagram of an antenna structure according to another embodiment of the present invention.

[0017] Explanation of icon numbers

[0018] 100, 200, 300, 710~740, 810~840: Signal radiating devices;

[0019] 110, 210, 311, 312, 401~404: First signal radiator;

[0020] 120, 220, 321-324, 501-503: Second signal radiators;

[0021] 130, 230, 331, 600: Reflective signal radiators;

[0022] 211, 212, 221, 222, 421~424, 531~533: Radiators;

[0023] 213, 225, 410, 521~523: substrate;

[0024] 214, 226, 231, 232, 511-513: Reflectors;

[0025] 223, 224, WG1~WG3: Waveguide components;

[0026] 233, 3213: Signal feed sources;

[0027] 3211, 3212: Sub-radiators;

[0028] 611–614: Radiator assembly;

[0029] 700, 800: Antenna structure;

[0030] 750, 811-814: Planar substrate;

[0031] S1, S2, S3: Sides;

[0032] W1~W6: Transmission wires;

[0033] WB1, WB2-1, WB2-2, WB3: Signals;

[0034] X-AXIS, Y-AXIS, Z-AXIS, X, Y, Z: axial direction. Detailed Implementation

[0035] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0036] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a signal radiating device according to an embodiment of the present invention. The signal radiating device 100 includes a first signal radiator 110, a second signal radiator 120, and a reflective signal radiator 130. The first signal radiator 110 is used to transmit and receive a first signal WB1 in a first direction. In this embodiment, the first direction can be the direction of a first axis Z-AXIS. The second signal radiator 120 is overlapped with the first signal radiator 110. The second signal radiator 120 is used to transmit and receive second signals WB2-1 and WB2-2 in a second direction X-AXIS and / or a third direction Y-AXIS. In this embodiment, the second direction can be the direction of a second axis X-AXIS, and the third direction can be the direction of a third axis Y-AXIS. The first axis Z-AXIS, the second axis X-AXIS, and the third axis Y-AXIS are not the same. In this embodiment, the first axis Z-AXIS, the second axis X-AXIS, and the third axis Y-AXIS can be orthogonal to each other.

[0037] Furthermore, a reflective signal radiator 130 is disposed between the first signal radiator 110 and the second signal radiator 120. The reflective signal radiator 130 is used for omnidirectional transmission and reception of the third signal WB3.

[0038] In this embodiment, the third signal WB3 is a signal of the second frequency band, the first signal WB1 includes at least one of the signal of the first frequency band and the signal of the third frequency band, and the second signals WB2-1 and WB2-2 include at least one of the signal of the first frequency band and the signal of the third frequency band, wherein the second frequency band is lower than the first and third frequency bands. Furthermore, the first and third frequency bands may be the same or different.

[0039] By combining the first signal radiator 110, the second signal radiator 120, and the reflective signal radiator 130, the signal radiating device 100 of this embodiment can have the capability of multi-band operation and can provide multiple radio frequency signal transmission and reception actions to realize frequency division multitasking applications.

[0040] The signal radiation device 100 of this invention can also provide a type of omnidirectional field-mode modulation signal radiation device. The signal radiation device 100 has a circularly polarized wave coverage range, reinforces the propagation of any polarized wave in space, and can achieve the effect of polarization diversity.

[0041] Please refer to the following: Figure 2 , Figure 2 This is a side view of a signal radiating device according to an embodiment of the present invention. The signal radiating device 200 includes a first signal radiator 210, a second signal radiator 220, and a reflective signal radiator 230. The first signal radiator 210 includes a reflector 214, a substrate 213, and radiators 211 and 212. The substrate 213 is disposed on the reflector 214, and the radiators 211 and 212 are disposed on the substrate 213. The reflector 214 can be a signal reflector oriented towards a first axis (e.g., the Z-axis of a three-dimensional coordinate system) and is used to provide a reference ground plane for the first signal radiator 210. The radiators 211 and 212 can be metal plates used to radiate radio frequency signals and are used to radiate signals in the Z-axis direction. It is worth noting that the number of radiators 211 and 212 can be one or more, without specific limitations.

[0042] The second signal radiator 220 includes radiators 221 and 222, waveguide assemblies 223 and 224, a substrate 225, and a reflector 226. The substrate 225 overlaps with the reflector 214 and is positioned below the reflector 214. The reflector 226 is positioned below the substrate 225. Radiators 221 and 222 are respectively positioned on two sides of the reflector 226, which are also the two sides of the signal radiating device 200. Waveguide assembly 223 is positioned outside the radiator 221, and waveguide assembly 224 is positioned outside the radiator 222.

[0043] The reflector 226 can be a vertical reflector. The radiators 221 and 222 are quasi-Yagi radiators and can be equivalent to a dipole radiator. The second signal radiator 220 can make a horizontal reflector equivalent to a quasi-Yagi radiator on either side of the signal radiating device 200, so that its beam direction can radiate laterally toward the substrate 225.

[0044] In this embodiment, waveguide component 223 may have one or more waveguide units, without specific limitations. Similarly, waveguide component 224 may also be composed of one or more waveguide units, without specific limitations.

[0045] In this embodiment, the reflector 226 can be a signal reflector oriented toward a second axis (e.g., the X-axis of a three-dimensional coordinate system) or a third axis (e.g., the Y-axis of a three-dimensional coordinate system). The reflector 226 can provide a reference ground plane for the second signal radiator 220. The radiators 221 and 222 can be metal plates used to radiate radio frequency signals.

[0046] Furthermore, the reflective signal radiator 230 includes reflectors 231 and 232 and a signal feed source 233. The signal feed source 233 is coupled between reflectors 231 and 232, forming a radiator group. The radiator group formed by reflectors 231 and 232 and the signal feed source 233 is disposed between reflector 214 and substrate 225. The signal feed source 233 transmits radio frequency signals to reflectors 231 and 232. Reflectors 231 and 232 are used to transmit and receive signals of opposite polarities.

[0047] In this embodiment, reflectors 231 and 232 should be able to reflect signals along the X, Y, and Z axes. The metal surfaces of reflectors 231 and 232 can be equivalent to dipole radiators, and their beams exhibit a near-omnidirectional radiation field, enabling the reflective signal radiator 230 to perform omnidirectional signal transmission and reception.

[0048] Please refer to the following: Figure 3 , Figure 3 This is a top view of a signal radiating device according to an embodiment of the present invention. The signal radiating device 300 includes first signal radiators 311 and 312, second signal radiators 321-324, and a reflective signal radiator 331. The first signal radiators 311 and 312 are arranged in pairs, the second signal radiators 321 and 322 are arranged on two sides of the first signal radiator 311, and the second signal radiators 323 and 324 are arranged on two sides of the first signal radiator 312. The first signal radiators 311 and 312 can perform signal transmission and reception in the Z-axis. The second signal radiators 321 and 324 can provide signal transmission and reception in the X-axis; the second signal radiators 322 and 323 can provide signal transmission and reception in the Y-axis.

[0049] In addition, the reflective signal radiator 331 is disposed below the first signal radiators 311 and 312.

[0050] In this embodiment, taking the second signal radiator 321 as an example, the radiator in the second signal radiator 321 can be constructed from sub-radiators 3211 and 3212. The second signal radiator 321 also includes a signal feed source 3213. The signal feed source 3213 is coupled between the sub-radiators 3211 and 3212 and transmits radio frequency signals to the sub-radiators 3211 and 3212.

[0051] Incidentally, in this embodiment, the signal radiating device 300 also includes a power supply network composed of multiple transmission wires W1 to W4. The power supply network is used to transmit electrical signals in the signal radiating device 300. In addition, the signal radiating device 300 also includes radiation switches 341 and 342, which are used in conjunction with the power supply network to control the transmission of electrical signals.

[0052] It is worth mentioning that, in the embodiments of the present invention, there is no specific limitation on the number of the first signal radiator and the second signal radiator included in the signal radiating device. Figure 3 The number of first and second signal radiators shown in the embodiments is merely an illustrative example and is not intended to limit the scope of the invention.

[0053] Please refer to the following: Figures 4A to 4D , Figures 4A to 4D These are schematic diagrams illustrating different embodiments of the first signal radiator according to an example of the present invention. Figure 4A In the first signal radiator 401, a reflector (not shown), a substrate 410, and a plurality of radiators 421 are included. The radiators 421 may be rectangular in shape and are disposed on the substrate 410. The reflector is disposed below the substrate 410 and is covered by the substrate 410.

[0054] exist Figure 4B In this embodiment, the first signal radiator 402 includes a reflector (not shown), a substrate 410, and a plurality of radiators 422. The radiators 422 may be rectangular in shape and are arranged in an array on the substrate 410. The reflector is disposed below the substrate 410 and is covered by the substrate 410.

[0055] exist Figure 4C In this embodiment, the first signal radiator 403 includes a reflector (not shown), a substrate 410, and a plurality of radiators 423. The radiators 423 may be triangular in shape and are arranged in an array on the substrate 410. The reflector is also disposed under the substrate 410 and is covered by the substrate 410.

[0056] exist Figure 4DIn this embodiment, the first signal radiator 404 includes a reflector (not shown), a substrate 410, and a plurality of radiators 424. The radiators 424 may be circular (or elliptical) in shape and are arranged in an array on the substrate 410. The reflector is also disposed under the substrate 410 and is covered by the substrate 410.

[0057] Please refer to the following: Figures 5A to 5C , Figures 5A to 5C These are schematic diagrams illustrating different embodiments of the second signal radiator according to an example of the present invention. Figure 5A In this embodiment, the second signal radiator 501 includes a reflector 511, a substrate 521, a radiator 531, and waveguide assemblies WG1 to WG3. The substrate 521 is disposed on the reflector 511, and the radiator 531 and waveguide assemblies WG1 to WG3 are disposed outside one side S1 of the reflector 511. In this embodiment, the side S1 of the reflector 511 adjacent to the radiator 531 can be a flat edge. It is worth noting that the shapes of the waveguide assemblies WG1 to WG3 can be different, wherein the shape of waveguide assembly WG1 can be >; the shape of waveguide assembly WG2 can be elongated; and the shape of waveguide assembly WG3 can be <.

[0058] exist Figure 5B In this embodiment, the second signal radiator 502 includes a reflector 512, a substrate 522, a radiator 532, and waveguide assemblies WG1 and WG2. The substrate 522 is disposed on the reflector 512, and the radiator 532 and waveguide assemblies WG1 and WG2 are disposed on the outer side of one side S2 of the reflector 512. In this embodiment, the side S2 of the reflector 512 adjacent to the radiator 532 has a recess. The recess of the reflector 512 can concentrate the wireless signals transmitted and received by the radiator 532. The included angle of the recess can be set according to the wavelength of the transmitted and received signals.

[0059] exist Figure 5C In this embodiment, the second signal radiator 503 includes a reflector 513, a substrate 523, a radiator 533, and waveguide assemblies WG1 and WG2. The substrate 523 is disposed on the reflector 513, and the radiator 533 and waveguide assemblies WG1 and WG2 are disposed on the outer side of one side S3 of the reflector 513. In this embodiment, the side S3 of the reflector 513 adjacent to the radiator 533 has a protrusion. The protrusion of the reflector 513 can cause the wireless signals transmitted and received by the radiator 533 to diverge.

[0060] Please refer to the following: Figure 6 , Figure 6 This is a schematic diagram illustrating different embodiments of the reflective signal radiator of the present invention. Compared to Figure 2The reflective signal radiator 230 in this embodiment includes a plurality of radiator groups 611 to 614. Radiator groups 611 to 614 may have the same architecture as each other, and each of the radiator groups 611 to 614 may have the same architecture as the reflective signal radiator 230. The radiator groups 611 to 614 are arranged horizontally in sequence, and there may be a gap between directly adjacent radiator groups 611 to 614.

[0061] Please refer to Figure 7 , Figure 7 This is a schematic diagram of an antenna structure according to an embodiment of the present invention. The antenna structure 700 includes a plurality of signal radiating devices 710-740, a planar substrate 750, and a plurality of transmission lines W1-W6. The signal radiating devices 710-740 are collectively disposed on the planar substrate 750, which may be a multi-layered substrate. The signal radiating devices 710-740 are electrically connected to each other in pairs via the transmission lines W1-W6. In detail, signal radiating devices 710 and 720 are electrically connected to each other via transmission line W2; signal radiating devices 720 and 730 are electrically connected to each other via transmission line W3; signal radiating devices 730 and 740 are electrically connected to each other via transmission line W4; signal radiating devices 710 and 740 are electrically connected to each other via transmission line W1; signal radiating devices 710 and 730 are electrically connected to each other via transmission line W5; and signal radiating devices 720 and 740 are electrically connected to each other via transmission line W6.

[0062] The implementation details of each of the signal radiating devices 710 to 740 have been described in detail in the aforementioned multiple implementations and immediate embodiments, and will not be repeated here.

[0063] Please refer to Figure 8 , Figure 8 This is a schematic diagram of an antenna structure according to another embodiment of the present invention. The antenna structure 800 includes a plurality of signal radiating devices 810-840. The signal radiating devices 810-840 can be respectively disposed on different planar substrates 811-814, wherein planar substrate 811 and planar substrate 831 are disposed on a first plane formed by a first axis (e.g., the Z-axis) and a second axis (e.g., the X-axis), and planar substrate 831 and planar substrate 841 are disposed on a second plane formed by a second axis (e.g., the X-axis) and a third axis (e.g., the Y-axis). Furthermore, the signal radiating devices 810 to 840 can be electrically connected to each other via transmission wires W1 and W2.

[0064] The antenna structure 800 can have a three-dimensional structure, which can expand the field pattern range of the transmitted and received signals.

[0065] In summary, the signal radiating device and antenna structure of the present invention achieve omnidirectional signal transmission and reception by placing a reflective signal radiator between the first and second signal radiators and combining it with a circularly polarized wave design. Furthermore, the antenna device can operate on multiple frequencies and provide multiple radio frequency signals to achieve frequency division multiplexing functionality.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A signal radiating device, comprising: The first signal radiator is used to transmit and receive the first signal in the first direction; A second signal radiator, overlapping the first signal radiator, is configured to transmit and receive at least one second signal in a second direction and / or a third direction, wherein the first direction, the second direction, and the third direction are different; and A reflective signal radiator is positioned between the first and second signal radiators to transmit and receive a third signal in all directions. The third signal is a signal of the second frequency band. The first signal includes at least one of a signal of the first frequency band and a signal of the third frequency band. The second signal includes at least one of a signal of the first frequency band and a signal of the third frequency band. The second frequency band is lower than both the first frequency band and the third frequency band. The second signal radiator includes: A first radiator is disposed on a first side of the signal radiating device to receive the second signal; At least one first waveguide component is adjacent to the first radiator and configured along the second direction; A reflector, configured to overlap with the first signal radiator; and A substrate is disposed between the reflector and the first signal radiator, wherein at least one first waveguide assembly is disposed above the outer side of at least one side of the reflector. The reflective signal radiator includes: At least one radiator group, including: First reflector; The second reflector; and A signal feed source is coupled between the first reflector and the second reflector to transmit radio frequency signals to the first reflector and the second reflector, wherein the first reflector and the second reflector transmit and receive signals of opposite polarities, and the combination of the metal surfaces of the first reflector and the second reflector and the signal feed source is equivalent to a dipole radiator.

2. The signal radiating device according to claim 1, wherein the frequency band of the first signal may be the same as or different from the frequency band of the second signal.

3. The signal radiating device according to claim 1, wherein when the number of the at least one radiator group is multiple, the distance between adjacent two radiator groups is a gap.

4. The signal radiating device according to claim 1, wherein the first signal radiator comprises: Reflector; A substrate, disposed on the reflector, is used to provide a reference ground plane; as well as At least one radiator is disposed on the substrate for transmitting and receiving the first signal.

5. The signal radiating device according to claim 4, wherein when the number of the at least one radiator is multiple, the multiple radiators are arranged in an array on the substrate.

6. The signal radiating device according to claim 4, wherein the shape of the at least one radiator is circular, triangular or rectangular.

7. The signal radiating device according to claim 1, wherein the second signal radiator further comprises: A second radiator is disposed on the second side of the signal radiating device to receive the at least one second signal; as well as At least one second waveguide component is adjacent to the second radiator and configured along the third direction.

8. The signal radiating device according to claim 1, wherein the at least one first waveguide component has an edge that is parallel or not parallel to the first radiator.

9. The signal radiating device according to claim 1, wherein the first radiator comprises: The first sub-radiator and the second sub-radiator; The second signal radiator also includes: A signal feed source is coupled between the first sub-radiator and the second sub-radiator.

10. The signal radiating device according to claim 1, wherein at least one side of the reflector is a flat side.

11. The signal radiating device according to claim 1, wherein at least one side of the reflector has a recess or a protrusion.

12. An antenna structure, comprising: Multiple signal radiating devices according to claim 1, The plurality of signal radiating devices are coupled to each other.

13. The antenna structure according to claim 12, wherein the plurality of signal radiating devices are disposed together on a planar substrate.

14. The antenna structure according to claim 12, further comprising: Multiple transmission lines, each of which is used to electrically connect two of the multiple signal radiating devices to each other.

15. The antenna structure according to claim 12, wherein the first radiating device, the second radiating device, the third radiating device, and the fourth radiating device among the plurality of signal radiating devices are respectively disposed on the first planar substrate, the second planar substrate, the third planar substrate, and the fourth planar substrate. The first planar substrate and the second planar substrate are disposed on a first plane formed by the first axis and the second axis, and the third planar substrate and the fourth planar substrate are disposed on a second plane formed by the second axis and the third axis.

16. The antenna structure according to claim 15, wherein the first axis, the second axis and the third axis are mutually orthogonal.

17. The antenna structure according to claim 12, wherein the first direction, the second direction, and the third direction are mutually orthogonal.

Images