CN212230605U - Two unification PCB omnidirectional antenna of UWB and WIFI - Google Patents
Two unification PCB omnidirectional antenna of UWB and WIFI Download PDFInfo
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- CN212230605U CN212230605U CN202020887364.7U CN202020887364U CN212230605U CN 212230605 U CN212230605 U CN 212230605U CN 202020887364 U CN202020887364 U CN 202020887364U CN 212230605 U CN212230605 U CN 212230605U
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Abstract
The utility model discloses a two unification PCB omnidirectional antenna of UWB and WIFI, including antenna array A, antenna array B and the way network of closing, antenna array A and antenna array B are the nested equipment welded fastening of cross and are IN the same place, are equipped with IN end and GND end on antenna array A or the antenna array B, IN end and GND end respectively with the IN end of closing the network, the GND end welding, the UWB end and the UWB signal output part of closing the network are connected, the WIFI end and the WIFI signal output part of closing the network are connected. Through simulation debugging and antenna product actual test, the antenna performance accords with the design requirement, and the test parameter attaches the back, can satisfy the communication demand of two unification products of various UWB 3.5G-4.3G and WIFI 2.4G completely, is applicable to systems such as WIFI broadband wireless communication and UWB indoor location.
Description
Technical Field
The utility model relates to an antenna field, in particular to two unification PCB omnidirectional antenna of UWB and WIFI.
Background
With the wide application of indoor positioning technology and the high-speed development of network communication technology, the composite application scenes of various technologies are more and more. The UWB technology has major breakthrough in the aspect of propagation, and has the advantages of insensitivity to channel fading, low power spectral density of transmitted signals, low interception rate, low system complexity, capability of providing positioning accuracy of several centimeters, adaptability to transmission bandwidth and the like. Meanwhile, due to the wide application of the WIFI technology, in the industry of the Internet of things, the combination application requirements of UWB and WIFI are more and more, and the space and interference problems of products are more and more prominent.
Meanwhile, in order to meet the requirements of installation and water resistance of products, the antenna needs to be made as small as possible and installed inside a positioning base station product. Therefore, how to utilize the structural space of the existing product, and make the effect of the antenna good to meet the communication requirement of the product is a subject to be researched by the patent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a two unification PCB omnidirectional antenna of UWB and WIFI aims at combining UWB and WIFI, accords with the performance requirement of product, satisfies the demand in market.
The utility model provides a two unification PCB omnidirectional antenna of UWB and WIFI, including antenna array A, antenna array B and way network of combining, antenna array A with antenna array B is the nested equipment welded fastening of cross and is IN the same place, antenna array A or be equipped with IN end and GND end on the antenna array B, IN end with GND end respectively with combine IN end, the GND end welding of way network, combine the UWB end and the UWB signal output part of way network and be connected, combine the WIFI end and the WIFI signal output part of way network and be connected.
Preferably, the antenna further comprises a ground plane substrate, and the antenna array a, the antenna array B and the combiner network are welded on the ground plane substrate; and GND ends welded with the GND end of the ground plane substrate are arranged on two sides of the antenna array A and the antenna array B, and the GND end welded with the GND end of the ground plane substrate is also arranged on the combiner network.
Preferably, the ground plane substrate is provided with a mounting groove adapted to the combiner network, the combiner network is embedded in the mounting groove, the periphery of the combiner network is provided with a grounding copper foil, and the GND terminal of the ground plane substrate is arranged at the GND terminal and corresponds to the grounding copper foil in position and is welded.
Preferably, the assembly structure of the antenna array a and the antenna array B is vertically welded on the combiner network and the ground plane substrate.
The utility model has the advantages that:
the utility model discloses a PCB omnidirectional antenna includes antenna array A, antenna array B and closes the way network, antenna array A and antenna array B are the nested equipment welded fastening of cross and are IN the same place, be equipped with IN end and GND end on antenna array A or antenna array B, IN end and GND end respectively with close the IN end of way network, the GND end welding, close the UWB end and the UWB signal output part of way network and be connected, close the WIFI end and the WIFI signal output part of way network and be connected. Through simulation debugging and antenna product actual test, the antenna performance accords with the design requirement, and the test parameter attaches the back, can satisfy the communication demand of two unification products of various UWB 3.5G-4.3G and WIFI 2.4G completely, is applicable to systems such as WIFI broadband wireless communication and UWB indoor location.
The broadband antenna design method is adopted, the working frequency band is wide, the antenna structure is designed by adopting the cross-shaped appearance of the antenna array A and the antenna array B, the structure is symmetrical and stable, the out-of-roundness is good, and the antenna design requirements of small size, high isolation and stable performance can be met.
Drawings
Fig. 1 is a front view of an antenna array a of the PCB omnidirectional antenna of the present invention;
fig. 2 is a back view of an antenna array a of the PCB omnidirectional antenna of the present invention;
fig. 3 is a front view of an antenna array B of the PCB omnidirectional antenna of the present invention;
fig. 4 is a back view of an antenna array B of the PCB omnidirectional antenna of the present invention;
fig. 5 is a front view of the combiner network of the PCB omnidirectional antenna of the present invention;
fig. 6 is a back view of the combining network of the PCB omnidirectional antenna of the present invention;
fig. 7 is a schematic structural diagram of the PCB omnidirectional antenna of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, the present invention provides an embodiment of a two-in-one PCB omnidirectional antenna for UWB and WIFI:
the utility model provides a two unification PCB omnidirectional antenna of UWB and WIFI, includes antenna array A, antenna array B, closes way network 3 and ground plane base plate 4. Antenna array A middle part is equipped with draw-in groove 11 down, and antenna array B middle part is equipped with draw-in groove 21 up, and antenna array A and antenna array B are the nested equipment of cross through draw-in groove 11 and draw-in groove 21 and are in the same place to it is fixed to pass through soldering tin connection in the joint portion, install the welding again on product substrate 4 with combining network 3 together. Antenna element A, size 19 X25.5X0.762mm. Antenna element B, size 19X28 X0.762mm. And the size of the combiner network 3 is 16X28 X0.762mm. The antenna array A, the antenna array B and the combiner network 3 are all made of radio frequency double-sided circuit boards with dielectric constants of 3 according to the drawing specification, and the ground plane substrate 4 is determined according to the product form.
The ground plane substrate 4 is provided with a mounting groove matched with the combiner network 3, and the combiner network 3 is embedded into the mounting groove. The periphery of the combiner network 3 is provided with a grounding copper foil, the GND end of the ground plane substrate 4 is arranged at the position corresponding to the GND end of the grounding copper foil, and the grounding copper foils at the periphery of the combiner network 3 are welded with the GND end of the ground plane substrate 4.
The antenna array A and the antenna array B are vertically welded on the combiner network 3 and the ground plane substrate 4. The lower extreme middle part of antenna array B is equipped with IN end and GND end, IN end and GND end respectively with the IN end of path network 3, GND end welding, the UWB end of path network 3 is connected with UWB signal output part, the WIFI end of path network 3 is connected with WIFI signal output part.
And GND ends welded with the GND end of the ground plane substrate 4 are arranged on two sides of the lower ends of the antenna array A and the antenna array B.
The assembly operation of this product is: the antenna array A and the antenna array B are nested and assembled together in a cross shape, and then are connected and fixed at the middle joint part through soldering tin; install the welding again with combining network 3 on product substrate 4 together to each two GND ground connection places and the welding of base plate 4 with antenna array A and antenna array B both sides limit are IN the same place, and the IN end and the GND end of antenna array B and the IN end and the GND end welding of combining network 3 are IN the same place, then with combining network 3 all around ground connection copper foil and base plate 4GND welded connection good can.
UWB signal output part connects IN the UWB end of combining network 3, and WIFI signal output part connects IN WIFI (2.4G) end of combining network 3, then through the matching of microstrip line, and the signal is combined to the IN end, converts the electromagnetic wave into through antenna array A and antenna array B and launches. The receiving is then opposite, the electromagnetic wave that will receive by antenna array A and antenna array B converts the signal of telecommunication into, gets into the way network 3 of combining through the IN end, through matching and after the separation, UWB signal sends into UWB receiving circuit through the UWB end, and WIFI signal passes through WIFI (2.4G) end and gets into WIFI receiving circuit.
After the antenna is installed, the performance of the antenna meets the design requirements through simulation debugging and actual testing of antenna products, and after the test parameters are attached, the communication requirements of various UWB 3.5G-4.3G and WIFI 2.4G two-in-one products can be completely met, so that the antenna is suitable for WIFI broadband wireless communication, UWB indoor positioning and other systems.
The following simulation and test parameters:
1. the frequency band range is used:
A. UWB frequency band 3.5G-4.3G
B. WIFI frequency band 2.412G-2.482G
2. Gain directional diagram:
horizontal gain directional diagram:
vertical gain directional diagram:
3. phase diagram:
4. standing wave S22:
5. isolation S21:
the product adopts a design method of a broadband antenna, the working frequency band is wider, the antenna structure adopts the design of the cross-shaped appearance of the antenna array A and the antenna array B, the structure is symmetrical and stable, the out-of-roundness is good, and the design requirements of the antenna with small volume, high isolation and stable performance can be met.
Design indexes output standing wave ratio S11 (or S22) <2, isolation S12 (or S21) < -20dB, 50-ohm input and output impedance of an antenna, vertical polarization, horizontal omni-direction and maximum horizontal gain of 0 dBi.
In order to reduce the floor surface wave and the conduction coupling and prevent the mutual coupling of the two antenna arrays, the design adopts the design of a decoupling vertical structure, a floor branch section and the like.
This design has designed WIFI and UWB and has closed the way network 3 in order to realize impedance match and improve the isolation of WIFI and UWB frequency channel, through closing the minor matters of network 3, carries out the matching of antenna frequency channel impedance, improves the isolation of WIFI and UWB frequency channel simultaneously.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (4)
1. The PCB omnidirectional antenna is characterized by comprising an antenna array A, an antenna array B and a combining network, wherein the antenna array A and the antenna array B are nested and assembled IN a cross shape and welded and fixed together, an IN end and a GND end are arranged on the antenna array A or the antenna array B, the IN end and the GND end are respectively welded with an IN end and a GND end of the combining network, a UWB end of the combining network is connected with a UWB signal output end, and a WIFI end of the combining network is connected with a WIFI signal output end.
2. The UWB and WIFI two-in-one PCB omnidirectional antenna is characterized by further comprising a ground plane substrate, wherein the antenna array A, the antenna array B and the combining network are welded on the ground plane substrate; and GND ends welded with the GND end of the ground plane substrate are arranged on two sides of the antenna array A and the antenna array B, and the GND end welded with the GND end of the ground plane substrate is also arranged on the combiner network.
3. The UWB and WIFI two-in-one PCB omnidirectional antenna is characterized in that the ground plane substrate is provided with a mounting groove adapted to the combining network, the combining network is embedded in the mounting groove, a grounding copper foil is arranged around the combining network, and a GND end of the ground plane substrate is arranged at a GND end corresponding to the grounding copper foil and welded.
4. The UWB and WIFI two-in-one PCB omnidirectional antenna of claim 3, wherein the assembly structure of the antenna array A and the antenna array B is vertically welded on the combiner network and the ground plane substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020887364.7U CN212230605U (en) | 2020-05-25 | 2020-05-25 | Two unification PCB omnidirectional antenna of UWB and WIFI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020887364.7U CN212230605U (en) | 2020-05-25 | 2020-05-25 | Two unification PCB omnidirectional antenna of UWB and WIFI |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212230605U true CN212230605U (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020887364.7U Active CN212230605U (en) | 2020-05-25 | 2020-05-25 | Two unification PCB omnidirectional antenna of UWB and WIFI |
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| CN (1) | CN212230605U (en) |
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2020
- 2020-05-25 CN CN202020887364.7U patent/CN212230605U/en active Active
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