CN114512810A - Ultra-wideband antenna - Google Patents
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- CN114512810A CN114512810A CN202210252293.7A CN202210252293A CN114512810A CN 114512810 A CN114512810 A CN 114512810A CN 202210252293 A CN202210252293 A CN 202210252293A CN 114512810 A CN114512810 A CN 114512810A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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Abstract
The application discloses ultra wide band antenna includes: the radiating structure comprises a dielectric substrate, a radiating floor, a metal patch and an annular metal ground. The dielectric substrate comprises a first surface and a second surface which are opposite to each other, the dielectric substrate is provided with a plurality of conductive holes and a plurality of short-circuit holes which are communicated with the first surface and the second surface, the conductive holes are arranged at the edge of the dielectric substrate in a surrounding manner, and the short-circuit holes are arranged on the dielectric substrate along a first direction; the radiation floor is arranged on the first surface and connected with the plurality of short circuit holes and the plurality of conductive holes; the metal patch is arranged on the second surface and connected with the plurality of short circuit holes to form a parasitic radiation patch and a PIFA radiation patch which are arranged along a second direction perpendicular to the first direction and connected back to back, and the PIFA radiation patch is provided with a feed point; the annular metal ground is arranged on the second surface and connected with the plurality of conductive holes, and the annular metal ground surrounds the metal patch and is isolated from the metal patch. The parasitic radiating patch and the PIFA radiating patch generate different resonant frequency points so as to widen the bandwidth.
Description
Technical Field
The application relates to the technical field of antennas, in particular to an ultra-wideband antenna.
Background
The Ultra Wide Band (UWB) is a wireless carrier communication technology, mainly applied to short-distance high-speed data communication of about 10 meters, and transmits data by using nanosecond to microsecond-level narrow non-sinusoidal pulses, and transmits signals with extremely low power over a Wide frequency spectrum.
At present, the ultra-wideband antenna mostly adopts a single radiation patch design (i.e. a single patch antenna), wherein a radiation patch is positioned above a dielectric substrate, and an antenna is positioned on the bottom surface of the dielectric substrate in a reference manner. However, the single patch antenna has a problem of narrow bandwidth due to its limited physical characteristics. Therefore, the related manufacturers propose to increase the standing wave ratio bandwidth of the antenna by a gradually changed feeder or changing the shape of the patch, but have the problems of limited bandwidth expansion, reduced gain caused by changing the shape of the patch through the slot, poor positioning performance in a specific direction, and complicated appearance, which causes processing instability.
Disclosure of Invention
The embodiment of the application provides an ultra-wideband antenna, which can solve the problems in the prior art.
In order to solve the technical problem, the present application is implemented as follows:
the application provides an ultra-wideband antenna, including: the radiating structure comprises a dielectric substrate, a radiating floor, a metal patch and an annular metal ground. The dielectric substrate comprises a first surface and a second surface which are opposite to each other, the dielectric substrate is provided with a plurality of conductive holes and a plurality of short-circuit holes which are communicated with the first surface and the second surface, the conductive holes are arranged at the edge of the dielectric substrate in a surrounding manner, and the short-circuit holes are arranged on the dielectric substrate along a first direction; the radiation floor is arranged on the first surface and is connected with the plurality of short circuit holes and the plurality of conductive holes; the metal patch is arranged on the second surface and connected with the plurality of short circuit holes to form a parasitic radiation patch and a PIFA radiation patch which are arranged along a second direction and connected back to back, the second direction is vertical to the first direction, and the PIFA radiation patch is provided with a feed point; the annular metal ground is arranged on the second surface and connected with the plurality of conductive holes, and the annular metal ground surrounds the metal patch and is isolated from the metal patch. The parasitic radiation patch and the PIFA radiation patch generate different resonance frequency points so as to widen the bandwidth.
In the embodiment of the application, the radiating floor and the metal patch are connected through the plurality of short circuit holes to form the parasitic radiating patch and the PIFA radiating patch which are connected back to back, so that the ultra-wideband antenna generates two resonant frequency points under the condition of not increasing the size of the original single radiating patch and the number of layers of the medium substrate, the dual-frequency resonance is realized, the bandwidth is widened, and the structure is simple and easy to realize. In addition, the radiating patch is surrounded by the annular metal ground, so that the coupling between the parasitic radiating patch and the PIFA radiating patch and the antenna reference ground is increased, the resonance frequency points generated by the parasitic radiating patch and the PIFA radiating patch can be reduced, the size of the ultra-wideband antenna is reduced, and the bandwidth of the ultra-wideband antenna is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is an exploded view of one embodiment of an ultra-wideband antenna according to the present application;
fig. 2 is an exploded view of a second embodiment of an ultra-wideband antenna according to the present application;
fig. 3 is a schematic diagram of an assembly of the ultra-wideband antenna of fig. 2;
fig. 4 is a top view of the ultra-wideband antenna of fig. 3;
fig. 5 is a bottom view of the ultra-wideband antenna of fig. 3;
FIG. 6 is a graph showing a variation of a scattering parameter of a conventional single patch antenna;
FIG. 7 is a graph of a variation of a scattering parameter of one embodiment of the UWB antenna of FIG. 3;
fig. 8 is a three-dimensional simulated radiation pattern of the ultra-wideband antenna of fig. 3 at 8 GHz;
fig. 9 is a two-dimensional simulated radiation pattern at 8GHz for the ultra-wideband antenna of fig. 3;
fig. 10 is an exploded view of a third embodiment of an ultra-wideband antenna according to the present application;
fig. 11 is an exploded view of a fourth embodiment of an ultra-wideband antenna according to the present application;
fig. 12 is an exploded view of a fifth embodiment of an ultra-wideband antenna according to the present application;
fig. 13 is an exploded view of a sixth embodiment of an ultra-wideband antenna according to the present application; and
fig. 14 is an exploded view of a seventh embodiment of an ultra-wideband antenna according to the present application.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or similar components or process flows.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, values, method steps, operations, components, and/or components, but do not preclude the presence or addition of further features, values, method steps, operations, components, and/or groups thereof.
It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is described as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
Please refer to fig. 1, which is an exploded view of an ultra-wideband antenna according to a first embodiment of the present application. As shown in fig. 1, the ultra-wideband antenna 100 includes: a dielectric substrate 110, a radiation floor 120, a metal patch 130 and a ring-shaped metal ground 140.
In the embodiment, the dielectric substrate 110 includes a first surface 112 and a second surface 114 opposite to each other, the dielectric substrate 110 is provided with a plurality of conductive vias 50 and a plurality of shorting vias 60 communicating the first surface 112 and the second surface 114, the plurality of conductive vias 50 are disposed around an edge of the dielectric substrate 110, and the plurality of shorting vias 60 are disposed on the dielectric substrate 110 in an array along the first direction F. The dielectric substrate 110 may be a flexible substrate or a rigid substrate; the material of the flexible substrate may include, but is not limited to, Polyimide (PI), Polycarbonate (PC), Polyester (PET), Cyclic Olefin Copolymer (COC), or a combination thereof, and the material of the rigid substrate may include, but is not limited to, glass, quartz, wafer, ceramic, or a combination thereof, but the embodiment is not limited to the disclosure; the material of the conductive vias 50 and the short vias 60 can be a conductive metal (e.g., copper, silver, aluminum, zinc, gold, or alloys thereof); the number of the conductive vias 50 may be, but not limited to, 20, and the number of the shorting vias 60 may be, but not limited to, 8, and the actual number of the conductive vias 50 and the shorting vias 60 may be adjusted according to actual requirements.
In the present embodiment, the radiation floor 120 is disposed on the first surface 112 and connects the plurality of short circuit holes 60 and the plurality of conductive holes 50. The radiation floor 120 may be made of a conductive metal, and the conductive metal is coated on the first surface 112 of the dielectric substrate 110 by chemical plating or a conductive metal powder spraying process, so as to form the radiation floor 120. In one embodiment, the area of the first surface 112 of the dielectric substrate 110 may be slightly larger than the area of the radiant floor 120 in order to leave a little margin for plating copper on the surface of the dielectric substrate 110.
In the present embodiment, the metal patch 130 is disposed on the second surface 114 and connected to the plurality of short circuit holes 60 to form a parasitic radiating patch 132 and a PIFA radiating patch 134 which are arranged along a second direction S and connected back to back, the second direction S is perpendicular to the first direction F, and the PIFA radiating patch 134 is provided with the feeding point 70. The metal patch 130 may be, but is not limited to, a rectangular plate (the shape of the metal patch 130 may be adjusted according to actual requirements), the metal patch 130 may be made of a conductive metal, and the conductive metal covers the second surface 114 of the dielectric substrate 110 by using a pressing or spraying process to form the metal patch 130; in detail, the metal patch 130, connected to the plurality of short circuit holes 60 that are grounded, can be equivalent to a parasitic radiation patch 132 and a PIFA radiation patch 134 that are located on the left and right sides of the plurality of short circuit holes 60 and connected back to back (i.e. it can be regarded as a dual-antenna back-to-back combination); the parasitic radiating patch 132 couples energy from the PIFA radiating patch 134 and the parasitic radiating patch 132 creates a different resonant frequency point than the PIFA radiating patch 134 to broaden the band bandwidth.
In more detail, when the connection positions of the plurality of shorting holes 60 and the metal patch 130 are located at the center line position of the metal patch 130 along the second direction S, the PIFA radiating patch 134, the radiating floor 120 and the plurality of shorting holes 60 equivalently form a quarter-wave resonant PIFA antenna (one end of the PIFA radiating patch 134 connected with the plurality of shorting holes 60 is the end with the weakest electric field, and the other end is the end with the strongest electric field); the parasitic radiating patch 132, the radiating floor 120 and the plurality of short circuit holes 60 also equivalently form a grounded parasitic antenna with quarter-wave resonance (since the parasitic radiating patch 132 is not provided with a feed point, an electric field on the parasitic radiating patch 132 is an induced electric field which has the same amplitude as that on the PIFA radiating patch 134 but has the opposite direction); since the resonant frequency points generated by the parasitic radiation patch 132 and the PIFA radiation patch 134 are related to the area size thereof, the resonant frequency points generated by the parasitic radiation patch 132 and the PIFA radiation patch 134 (i.e., different resonant frequency points generated by the parasitic radiation patch 132 and the PIFA radiation patch 134) can be changed by changing the connection positions of the plurality of short circuit holes 60 and the metal patch 130 (i.e., changing the area sizes of the parasitic radiation patch 132 and the PIFA radiation patch 134 located on the left and right sides of the plurality of short circuit holes 60), and the distance between the two resonant frequency points is determined by the size difference between the area sizes of the parasitic radiation patch 132 and the PIFA radiation patch 134, thereby expanding the bandwidth of the ultra-wideband antenna 100. In addition, since the length of the PIFA radiating patch 134 in the second direction S may be half of the length of the metal patch 130 in the second direction S, the antenna can be downsized.
In the present embodiment, the annular metal ground 140 is disposed on the second surface 114 and connected to the plurality of conductive vias 50, and the annular metal ground 140 surrounds the metal patch 130 and is isolated from the metal patch 130. The annular metal ground 140 is connected to the radiation floor 120 through the plurality of conductive holes 50 to form a ground ring, so that the annular metal ground 140 and the radiation floor 120 jointly serve as a reference ground of the ultra-wideband antenna 100, the coupling between the ultra-wideband antenna 100 and the reference ground is increased, the resonant frequency point generated by the parasitic radiation patch 132 and the PIFA radiation patch 134 can be reduced, the size of the ultra-wideband antenna 100 is reduced, and the bandwidth of the ultra-wideband antenna 100 is increased.
In this embodiment, the ultra-wideband antenna 100 may further include a feeding pad 150, the feeding pad 150 and the radiating floor 120 are located on the same plane (i.e., the feeding pad 150 is disposed on the first surface 112), and the radiating floor 120 surrounds the feeding pad 150 and is isolated from the feeding pad 150; the dielectric substrate 110 may also include a feed hole 116 and a feed pad 150 connects the feed point 70 of the PIFA radiating patch 134 through the feed hole 116. Therefore, the ultra-wideband antenna 100 as an antenna module can be directly connected to the signal output line of the system through the feeding pad 150, or the feeding pad 150 can be connected to the system motherboard through a board-to-board connector of a separate transmission line. When the ultra-wideband antenna 100 is used as a transmitting antenna, a transmitting chip of the system motherboard can generate a frequency signal which has the same resonant frequency as the ultra-wideband antenna 100 and a certain amplitude, and the frequency signal is input to the feeding pad 150 through a transmission line and input to the PIFA radiating patch 134 through the feeding hole 116, so that the parasitic radiating patch 132 and the PIFA radiating patch 134 generate an equal-amplitude reverse electric field, the electric fields of the far field region above the metal patch 130 are superposed in the same direction to form effective radiation, and the frequency signal generated by the system motherboard is transmitted. When the ultra-wideband antenna 100 is used as a receiving antenna, the radiation electric fields generated by other antennas in the free space generate induction electric fields on the ultra-wideband antenna 100, the induction electric fields generate induction currents, and when the signal frequency of the radiation electric fields generated by other antennas is the same as the resonant frequency of the ultra-wideband antenna 100, the current is the largest, and then the maximum current is finally input into a receiving chip of a system mainboard through the feed hole 116, the feed pad 150 and the independent transmission line.
In an embodiment, please refer to fig. 2 to 5, fig. 2 is an exploded view of an ultra wideband antenna according to a second embodiment of the present application, fig. 3 is a combination schematic view of the ultra wideband antenna of fig. 2, fig. 4 is a top view of the ultra wideband antenna of fig. 3, and fig. 5 is a bottom view of the ultra wideband antenna of fig. 3. As shown in fig. 2 to 5, the ultra-wideband antenna 200 may further include a microstrip feed line 260 in addition to the dielectric substrate 110, the radiating floor 120, the metal patch 130, the annular metal ground 140 and the feed pad 150, wherein the microstrip feed line 260 and the feed point 70 are disposed inside the PIFA radiating patch 134 and are isolated from three sides of the PIFA radiating patch 134 by the U-shaped slot 80, the feed point 70 is located inside the U-shaped slot 80, and the microstrip feed line 260 connects the feed point 70 and the PIFA radiating patch 134. When the ultra-wideband antenna 200 is used as a transmitting antenna, the feeding pad 150 feeds a signal, which has the same resonant frequency as the parasitic radiation patch 132 and the PIFA radiation patch 134 and has a certain amplitude, into the PIFA radiation patch 134 through the feeding hole 116, the feeding point 70 and the microstrip feeding line 260, so that the parasitic radiation patch 132 and the PIFA radiation patch 134 generate an electric field with equal and opposite amplitudes to transmit the signal; when the ultra-wideband antenna 200 is used as a receiving antenna, the parasitic radiation patch 132 and the PIFA radiation patch 134 generate an induced electric field through a signal having the same resonant frequency and a certain amplitude, and the induced electric field generates an induced current, which is then input to the system connected to the ultra-wideband antenna 200 through the feed hole 116 and the feed pad 150. In this embodiment, the microstrip feed line 260 and the U-shaped slot 80 in the PIFA radiating patch 134 are increased, reducing the area of the PIFA radiating patch 134, increasing the inductance of the PIFA radiating patch 134, and lowering the resonant frequency of the PIFA radiating patch 134. In addition, the resonant frequency point of the PIFA radiating patch 134 located to the right of the plurality of shorting holes 60 can be changed by adjusting the length of the microstrip feed line 260.
Compared with the ultra-wideband antenna 200 of fig. 2, the ultra-wideband antenna 100 of fig. 1 does not have the microstrip feed line 260, so that the PIFA radiating patch 134 has the most complete area and the best efficiency, and the influence of the microstrip feed line 260 on the ultra-wideband antenna 200 is avoided.
Referring to fig. 6 and 7, fig. 6 is a graph showing a variation of a scattering parameter of the conventional single patch antenna, and fig. 7 is a graph showing a variation of a scattering parameter of the ultra-wideband antenna of fig. 3, wherein a horizontal axis represents frequency (unit: gigahertz (GHz)), a vertical axis represents a scattering parameter (unit: decibel (dB)), and the dimensions of the conventional single patch antenna and the ultra-wideband antenna 200 are the same. As shown in fig. 6 and 7, it can be seen that the ultra-wideband antenna 200 can extend the scattering parameter bandwidth by about 30% at-3 dB and approximately one-time at-6 dB compared with the conventional single patch antenna.
Referring to fig. 8 and 9, fig. 8 is a three-dimensional simulated radiation pattern of the ultra-wideband antenna of fig. 3 at 8GHz, and fig. 9 is a two-dimensional simulated radiation pattern of the ultra-wideband antenna of fig. 3 at 8GHz, where a solid line of fig. 9 is a radiation pattern of the ultra-wideband antenna 200 on a Phi-0 ° plane, and a dotted line of fig. 9 is a radiation pattern of the ultra-wideband antenna 200 on a Phi-90 ° plane. As shown in fig. 8 and 9, it can be seen that the ultra-wideband antenna 200 has good directivity, and can meet the basic requirement of communication.
In one embodiment, please refer to fig. 10, which is an exploded view of a third embodiment of an ultra wideband antenna according to the present application. As shown in fig. 10, the difference between the ultra-wideband antenna 300 and the ultra-wideband antenna 200 is: the parasitic radiation patch 132 is respectively provided with a linear groove 90 along two side edges of the first direction F. By the arrangement of the straight-shaped groove 90, the path length of the current flowing from the parasitic radiation patch 132 into the plurality of short-circuit holes 60 can be prolonged, and the purpose of reducing the resonant frequency of the parasitic radiation patch 132 is achieved.
In an embodiment, please refer to fig. 11 and 12, and fig. 11 and 12 are exploded views of a fourth embodiment and a fifth embodiment of an ultra wideband antenna according to the present application, respectively. As shown in fig. 11 and 12, the arrangement of the slits (U-shaped slits 92 or cross-shaped slits 94) can extend the path length of the current flowing from the parasitic radiation patch 132 into the plurality of short circuit holes 60, thereby achieving the purpose of reducing the resonant frequency of the parasitic radiation patch 132. In addition, the gap can also reduce the size of the ultra-wideband antenna 400 and the ultra-wideband antenna 500, thereby achieving the purpose of miniaturization. In other embodiments, the gap may be any other shaped gap.
In one embodiment, please refer to fig. 13, which is an exploded view of a sixth embodiment of an uwb antenna according to the present application. As shown in fig. 13, the difference between the ultra-wideband antenna 600 and the ultra-wideband antenna 200 is: the plurality of short circuit holes 60 are offset in the first direction F. Through the setting of a plurality of short circuit holes 60 dislocation skew, can change the path length that the electric current flowed into a plurality of short circuit holes 60 from one side of parasitic radiation paster 132 (change parasitic radiation paster 132's resonant frequency promptly), avoided simultaneously because of a plurality of short circuit holes 60 are concentrated the risk that leads to dielectric substrate 110 to break off, promote the product yield.
In one embodiment, please refer to fig. 14, which is an exploded view of a seventh embodiment of an ultra wideband antenna according to the present application. As shown in fig. 14, the ultra-wideband antenna 700 includes a dielectric substrate 110, a radiation floor 120, a metal patch 130, and a ring-shaped metal ground 140, where the ring-shaped metal ground 140 includes a plurality of ground segments 142 arranged intermittently, and the plurality of ground segments 142 are connected to the plurality of conductive holes 50; the ultra-wideband antenna 700 further comprises a microstrip feed line 760 disposed at the second surface 114, the microstrip feed line 760 being disposed between and isolated from two ground segments 142 of the plurality of ground segments 142, the microstrip feed line 760 connecting the PIFA radiating patch 134. Note that the microstrip feed line 760 is not connected to any of the conductive vias 50. Therefore, the ultra-wideband antenna 700 can be easily applied to a common double-sided board, and the structure is simpler. Through the arrangement of the plurality of ground segments 142 and the microstrip feed line 760 which are arranged discontinuously, the PIFA radiating patch 134 can be directly fed by the microstrip feed line 760 arranged on the second surface 114, and the coupling of the ultra-wideband antenna 700 is reduced, the size of the ultra-wideband antenna 700 is increased, and the radiation efficiency is increased. In another embodiment, the annular metal ground 140 may be a C-type ground ring, the C-type ground ring connects the plurality of conductive holes 50, and the microstrip feed line 760 is disposed at an opening of the C-type ground ring and isolated from the C-type ground ring (i.e., the annular metal ground 140 only interrupts both sides of the microstrip feed line 760).
In summary, in the embodiment of the application, the parasitic radiation patch and the PIFA radiation patch which are connected back to back are formed by connecting the radiation floor and the metal patch through the plurality of short circuit holes, so that the ultra-wideband antenna generates two resonance frequency points without increasing the size of the original single radiation patch and the number of layers of the dielectric substrate, thereby realizing dual-frequency resonance to widen the bandwidth, and the structure is simple and easy to implement. In addition, the radiating patch is surrounded by the annular metal ground, so that the coupling between the parasitic radiating patch and the PIFA radiating patch and the antenna reference ground is increased, the resonance frequency points generated by the parasitic radiating patch and the PIFA radiating patch can be reduced, the size of the ultra-wideband antenna is reduced, and the bandwidth of the ultra-wideband antenna is improved. In addition, the ultra-wideband antenna can feed through the feeding pad arranged on the first surface and also can feed through the microstrip feeder arranged on the second surface. Moreover, the frequency of the parasitic radiation patch or/and the PIFA radiation patch can be adjusted by changing the arrangement positions of the short circuit holes and the shape of the parasitic radiation patch (for example, forming a straight-line-shaped groove, a U-shaped slot, a cross slot or a slot with other shapes), so as to expand the bandwidth of the ultra-wideband antenna.
Although the above-described elements are included in the drawings of the present application, it is not excluded that more additional elements may be used to achieve better technical results without departing from the spirit of the invention.
While the invention has been described using the above embodiments, it should be noted that these descriptions are not intended to limit the invention. Rather, this invention encompasses modifications and similar arrangements as would be apparent to one skilled in the art. The scope of the claims is, therefore, to be construed in the broadest manner to include all such obvious modifications and similar arrangements.
Claims (10)
1. An ultra-wideband antenna, comprising:
the dielectric substrate comprises a first surface and a second surface which are opposite to each other, the dielectric substrate is provided with a plurality of conductive holes and a plurality of short-circuit holes which are communicated with the first surface and the second surface, the conductive holes are arranged around the edge of the dielectric substrate, and the short-circuit holes are arranged on the dielectric substrate along a first direction;
the radiation floor is arranged on the first surface and is connected with the plurality of short circuit holes and the plurality of conductive holes;
the metal patch is arranged on the second surface and connected with the plurality of short circuit holes to form a parasitic radiation patch and a PIFA radiation patch which are arranged along a second direction and connected back to back, the second direction is vertical to the first direction, and the PIFA radiation patch is provided with a feed point; and
the annular metal ground is arranged on the second surface and connected with the plurality of conductive holes, and the annular metal ground surrounds the metal patch and is isolated from the metal patch;
wherein the parasitic radiating patch and the PIFA radiating patch generate different resonance frequency points to widen the bandwidth.
2. The ultra-wideband antenna of claim 1, further comprising a feed pad, said feed pad being coplanar with said radiating floor, said radiating floor surrounding said feed pad and isolated from said feed pad; the dielectric substrate further comprises a feed hole, and the feed pad is connected with the feed point through the feed hole.
3. The ultra-wideband antenna of claim 2, further comprising a microstrip feed line, said microstrip feed line and said feed point being disposed inside said PIFA radiating patch and being isolated from said PIFA radiating patch on three sides by a U-shaped slot, said feed point being located inside said U-shaped slot, said microstrip feed line connecting said feed point and said PIFA radiating patch.
4. The ultra-wideband antenna of claim 1, wherein said parasitic radiating patch has a substantially straight slot along each of two side edges of said first direction.
5. The ultra-wideband antenna of claim 1, wherein said parasitic radiating patch is formed with a U-shaped slot, a cross slot or other slot.
6. The ultra-wideband antenna of claim 1, wherein the connection locations of said plurality of shorting holes to said metal patch are located along a centerline of said metal patch in said second direction.
7. The ultra-wideband antenna of claim 1, wherein said annular metallic ground comprises a plurality of ground segments arranged intermittently, said plurality of ground segments connecting said plurality of conductive vias; the ultra-wideband antenna further comprises a microstrip feeder line arranged on the second surface, the microstrip feeder line is arranged between two grounding sections of the plurality of grounding sections and isolated from the two grounding sections, and the microstrip feeder line is connected with the PIFA radiating patch.
8. The ultra-wideband antenna of claim 1, wherein said plurality of shorting holes are offset disposed along said first direction.
9. The ultra-wideband antenna of claim 1, wherein the area of said first surface of said dielectric substrate is slightly larger than the area of said radiating floor.
10. The ultra-wideband antenna of claim 1, wherein the size of the difference in area dimensions between said parasitic radiating patch and said PIFA radiating patch determines the distance between said different resonant frequency points.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252293.7A CN114512810A (en) | 2022-03-15 | 2022-03-15 | Ultra-wideband antenna |
| TW111135564A TWI811113B (en) | 2022-03-15 | 2022-09-20 | Ultra-wide band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210252293.7A CN114512810A (en) | 2022-03-15 | 2022-03-15 | Ultra-wideband antenna |
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| Publication Number | Publication Date |
|---|---|
| CN114512810A true CN114512810A (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210252293.7A Withdrawn CN114512810A (en) | 2022-03-15 | 2022-03-15 | Ultra-wideband antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114512810A (en) |
| TW (1) | TWI811113B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360506A (en) * | 2022-09-14 | 2022-11-18 | 昆山联滔电子有限公司 | Ultra-wideband antenna |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114512810A (en) * | 2022-03-15 | 2022-05-17 | 昆山联滔电子有限公司 | Ultra-wideband antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030122718A1 (en) * | 2001-12-27 | 2003-07-03 | Shyh-Tirng Fang | Dual-frequency planar antenna |
| US20050057400A1 (en) * | 2003-09-01 | 2005-03-17 | Alps Electric Co., Ltd. | Dual-band antenna having small size and low height |
| CN111710970A (en) * | 2020-06-08 | 2020-09-25 | Oppo广东移动通信有限公司 | Millimeter wave antenna module and electronic equipment |
| TW202304060A (en) * | 2022-03-15 | 2023-01-16 | 大陸商昆山聯滔電子有限公司 | Ultra-wide band antenna |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7446712B2 (en) * | 2005-12-21 | 2008-11-04 | The Regents Of The University Of California | Composite right/left-handed transmission line based compact resonant antenna for RF module integration |
| TWI336541B (en) * | 2006-05-02 | 2011-01-21 | Hon Hai Prec Ind Co Ltd | Multi-band antenna |
| TWM398212U (en) * | 2010-08-27 | 2011-02-11 | Unictron Technologies Corp | High radiation efficiency micro antenna |
| US9941593B2 (en) * | 2013-04-30 | 2018-04-10 | Monarch Antenna, Inc. | Patch antenna and method for impedance, frequency and pattern tuning |
| TWI674705B (en) * | 2018-12-28 | 2019-10-11 | 財團法人工業技術研究院 | Hybrid multi-band antenna array |
-
2022
- 2022-03-15 CN CN202210252293.7A patent/CN114512810A/en not_active Withdrawn
- 2022-09-20 TW TW111135564A patent/TWI811113B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030122718A1 (en) * | 2001-12-27 | 2003-07-03 | Shyh-Tirng Fang | Dual-frequency planar antenna |
| US20050057400A1 (en) * | 2003-09-01 | 2005-03-17 | Alps Electric Co., Ltd. | Dual-band antenna having small size and low height |
| CN111710970A (en) * | 2020-06-08 | 2020-09-25 | Oppo广东移动通信有限公司 | Millimeter wave antenna module and electronic equipment |
| TW202304060A (en) * | 2022-03-15 | 2023-01-16 | 大陸商昆山聯滔電子有限公司 | Ultra-wide band antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115360506A (en) * | 2022-09-14 | 2022-11-18 | 昆山联滔电子有限公司 | Ultra-wideband antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202304060A (en) | 2023-01-16 |
| TWI811113B (en) | 2023-08-01 |
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Application publication date: 20220517 |