CN212848835U

CN212848835U - Miniaturized rectangular patch array antenna

Info

Publication number: CN212848835U
Application number: CN202021923619.7U
Authority: CN
Inventors: 周文颖; 逯迈
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-03-30
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses a miniaturized rectangular patch array antenna, which comprises a 5G rectangular patch array antenna and an open resonant ring, and the decoupling analysis of the open resonator ring in the process of miniaturizing the 5G rectangular patch array antenna with different units, the utility model mainly realizes the size miniaturization of the 5G rectangular patch array antenna, firstly designs the 2 unit rectangular patch array antenna, designs the open resonator ring metal unit which can effectively reduce the mutual coupling effect among the array elements aiming at the mutual coupling effect among different array elements in the miniaturization process, and finally explains the decoupling application of the open resonator ring in the 8 unit patch array antenna, in the miniaturized in-process of array antenna, through adding the opening resonance ring between paster array element, can effectively improve the isolation between the array element to the decoupling zero effect of opening resonance ring to 5G rectangle paster array antenna has been quantized the analysis.

Description

Miniaturized rectangular patch array antenna

Technical Field

The utility model belongs to the technical field of relevant 5G communication array antenna, concretely relates to miniaturized rectangle paster array antenna.

Background

Since the fifth generation wireless communication technology (5G) has outstanding advantages in terms of high transmission rate, low delay, high communication density, low power consumption, and integration with large-scale devices, commercial coverage has been fully achieved in China. The 5G communication greatly improves and enhances the spatial resolution, the spectral efficiency and the channel capacity of the communication system through a novel antenna transmission technology (Massive MIMO). The application of the Massive MIMO technology can enable the base station to improve the number of butt joint users on the basis of the same time-frequency resources, thereby improving the frequency spectrum efficiency, and can radiate narrower beams, so that the energy is concentrated in a smaller range, thereby improving the energy efficiency on a radio frequency transmission channel between the base station and the mobile terminal, and reducing the power loss of the base station terminal. The central idea of the Massive MIMO technology is that when the number of antennas of a base station reaches a certain order of magnitude, the negative effects of fading, interference and the like in a wireless channel can be neglected, and the reliability of data transmission is effectively improved. Therefore, the construction of the array antenna is an important ring in the Massive MIMO technology. The array antenna generates radiation through a plurality of array elements, and the overall radiation characteristic of the array antenna is enhanced, so that the array antenna has stronger directivity. By adjusting the array element spacing, the feeding amplitude and the phase, the array antenna can be suitable for various 5G communication scenes. Meanwhile, the technical advantages of the array antenna are also influenced by parameters such as beam concentration degree, main lobe gain and isolation among array elements.

Patents proposed in the last 10 years based on split ring resonators include: for ultra-wideband or multi-band antennas, as well as for the design of super-surface, filter and reconfigurable antennas. Wherein the application in the research of antenna miniaturization all is based on the array antenna of different structures, frequency, and with the utility model discloses open resonator ring of different structures.

The utility model discloses use 5G wireless communication as the application background, constructed the 5G rectangle paster array antenna of operating frequency at 3.5-3.6 GHz. Through designing a single negative material based on open resonator ring for reduce the coupling effect between the array element among the miniaturized in-process of this array antenna, reach the isolation that promotes this array antenna, improve its radiation performance's purpose.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing the miniaturized rectangle paster array antenna that can cover 5G microwave frequency channel, using opening resonance ring metal unit to rectangle paster array antenna, utilizing its self to produce the special electromagnetic property of resonance under the frequency of setting for, restraining the mutual coupling effect between the array element, guaranteeing under the not influenced prerequisite of the bandwidth performance of paster array antenna, improving the isolation between the array element, reaching better decoupling effect.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a miniaturized rectangle paster array antenna, includes feed port two, feed port one, microstrip line, impedance converter, array element one, rectangle paster one, open resonator ring group, rectangle paster two, array element two and bottom plate, be provided with open resonator ring group on the bottom plate, open resonator ring group's left side is provided with array element one, and open resonator ring group's right side is provided with array element two, array element one includes feed port one and rectangle paster one, array element two includes rectangle paster two and feed port two, rectangle paster one passes through impedance converter and is connected with the microstrip line with feed port one, rectangle paster two passes through impedance converter and is connected with the microstrip line with feed port two.

Preferably, the distance between the first array element and the second array element is reduced by 3 mm.

Preferably, the first array element and the second array element have the same size, and the impedance converter and the microstrip line arranged between the first array element and the second array element are also the same.

Preferably, the split resonant ring group is a metal unit, the outer diameter is 3.745mm, the inner diameter is 3.077mm, and the width of the split gap is 0.5 mm.

Preferably, the bottom plate is an FR4Epoxy (FR4Epoxy) plate with the width of 62.5mm and the thickness of 2.4 mm.

Preferably, the first array element and the second array element are provided in plurality.

Compared with the prior art, the utility model provides a miniaturized rectangle paster array antenna possesses following beneficial effect:

1. the utility model discloses to the mutual coupling effect that forms in the miniaturized process of rectangle paster array antenna of 5G frequency channel, design one kind and can carry out the decoupling zero opening resonance ring metallic structure to rectangle paster array antenna, this resonance ring can restrain the transmission of electromagnetic wave between the array element when taking place the resonance with matrix paster array antenna, reach the purpose that improves array antenna isolation;

2. the utility model discloses contrast 2 unit rectangle paster array antenna, 2 miniaturized unit rectangle paster array antenna and based on the radiation performance of 2 unit miniaturization paster array antenna of opening resonant ring, the result shows: and at 3.54GHz, the isolation of the array antenna without reducing the array element spacing is-17.3025 dB, and after the array element spacing is reduced by 3mm, the isolation of the array antenna is-14.6606 dB. Therefore, after the array element spacing is reduced, the isolation of the array antenna is reduced by 15.2%, and the lowest frequency band is deviated; after the split resonant ring is added, the isolation of the array antenna is-16.8049 dB, compared with the array antenna without the split resonant ring, the isolation is improved by 14.6%, the lowest frequency band is expanded, so that mutual coupling effect can be generated in the process of reducing the array element spacing, the isolation and gain are reduced, and the frequency band is deviated;

3. the utility model discloses based on each item performance contrast result of 2 unit rectangle paster array antenna miniaturization in-process, the utility model designs a miniaturized 8 unit rectangle paster array antenna to with the radiation performance of the miniaturized 8 unit rectangle paster array antenna after adding the opening resonant ring contrast, the result shows: the space of each array element in the 8-unit rectangular patch array antenna is reduced by 3mm, after the whole array is reduced by 21mm, the isolation of the array antenna is-14.939 dB, and the isolation of the array antenna after the split resonant ring is added is-18.2879 dB. It can be seen that the addition of the split ring improves the array antenna isolation by 23%.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a model diagram of a 2-unit miniaturized patch antenna array proposed by the present invention;

FIG. 2 is a S parameter comparison curve chart provided by the present invention;

fig. 3 is a model diagram of an 8-unit miniaturized patch antenna array proposed by the present invention;

in the figure: 1. a second feeding port; 2. a first feeding port; 3. a microstrip line; 4. an impedance transformer; 5. array element one; 6. a first rectangular patch; 7. a group of split resonant rings; 8. a second rectangular patch; 9. array element two; 10. a base plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a miniaturized rectangle paster array antenna, including feed port two 1, feed port one 2, microstrip line 3, impedance converter 4, array element one 5, rectangle paster one 6, open resonator ring group 7, rectangle paster two 8, array element two 9 and bottom plate 10, be provided with open resonator ring group 7 on the bottom plate 10, open resonator ring group 7's left side is provided with array element one 5, and open resonator ring group 7's right side is provided with array element two 9, array element one 5 includes feed port one 2 and rectangle paster one 6, array element two 9 includes rectangle paster two 8 and feed port two 1, rectangle paster one 6 is connected with microstrip line 3 through impedance converter 4 with feed port one 2, rectangle paster two 8 is connected with microstrip line 3 through impedance converter 4 with feed port two 1.

The utility model provides a miniaturized rectangle patch array antenna, the distance between one 5 of array elements and the two 9 of array elements reduces 3mm, one 5 of array elements is the same with two 9 of array elements's size, and impedance transformer 4 and microstrip line 3 that set up between the two are also the same, open resonator ring group 7, the external diameter is 3.745mm, the internal diameter is 3.077mm, open gap width is 0.5mm, bottom plate 10 is width 62.5mm, thickness 2.4 mm's FR4Epoxy (FR4Epoxy) board, one 5 of array elements and two 9 of array elements are provided with a plurality ofly altogether.

As shown in fig. 2, fig. 2 is a graph comparing and simulating S parameters of a miniaturized 2-unit rectangular patch array antenna with and without an open resonant ring, S11 is a return loss of the array antenna, and S21 is an isolation of the array antenna. Simulation results show that: the designed miniaturized 2-unit rectangular patch array antenna based on the split resonant ring can normally work within the frequency band range as follows: 3.49 ~ 3.6GHz can cover 5G working frequency band, and this array antenna's resonant frequency is 3.54GHz, and the return loss that corresponds is-27.8694 dB, and the isolation is-16.8049 dB, explains after adding the opening resonance ring, can reduce the coupling degree between the array element, and the induced current that forms on the opening resonance ring has effectively balanced the current energy between two array elements, reaches the decoupling effect.

The utility model discloses a theory of operation and use flow:

a2-unit rectangular patch array antenna with a working frequency band of 3.5-3.6GHz is disclosed, as shown in FIG. 1, a dielectric substrate of the printed patch antenna is 101mm in length, 62.5mm in width and 2.4mm in thickness, the selected dielectric substrate is an FR4Epoxy resin (FR4Epoxy) plate, and the relative dielectric parameter epsilon of the substrate is_rThe array element antenna is composed of three parts, namely a radiation patch, an impedance converter and a microstrip line, a measurement and feed port is used for feeding, the distance between two rectangular patch antennas is 8.8mm, 5 open resonant rings are added on the surface of a medium substrate at the middle position of the rectangular patch antennas, wherein the outer diameter of each single resonant ring is 3.745mm, the inner diameter of each single resonant ring is 3.077mm, and the width of an open gap is 0.5 mm;

the design is based on the miniaturized 8 unit paster array antennas of split ring resonator, adds 5 split ring resonators in 7 intervals respectively, as shown in fig. 3 to compare with the radiation performance of the miniaturized 8 unit rectangle paster array antennas after adding split ring resonator, the result shows: the space between each array element in the 8-unit rectangular patch array antenna is reduced by 3mm, and after the whole array is reduced by 21mm, the isolation of the array antenna is improved by 23% by adding the opening resonance ring.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a miniaturized rectangle patch array antenna, includes feed port two (1), feed port one (2), microstrip line (3), impedance converter (4), array element one (5), rectangle patch one (6), open resonator ring group (7), rectangle patch two (8), array element two (9) and bottom plate (10), its characterized in that: be provided with open resonator ring group (7) on bottom plate (10), the left side of open resonator ring group (7) is provided with array element (5), and the right side of open resonator ring group (7) is provided with array element two (9), array element one (5) are including feed port one (2) and rectangle paster one (6), array element two (9) are including rectangle paster two (8) and feed port two (1), rectangle paster one (6) are connected with microstrip line (3) through impedance converter (4) with feed port one (2), rectangle paster two (8) are connected with microstrip line (3) through impedance converter (4) with feed port two (1).

2. A miniaturized rectangular patch array antenna as claimed in claim 1, wherein: the distance between the first array element (5) and the second array element (9) is reduced by 3 mm.

3. A miniaturized rectangular patch array antenna as claimed in claim 1, wherein: the size of the first array element (5) is the same as that of the second array element (9), and the impedance converter (4) and the microstrip line (3) arranged between the first array element and the second array element are also the same.

4. A miniaturized rectangular patch array antenna as claimed in claim 1, wherein: the split resonant ring group (7) is a metal unit, the outer diameter is 3.745mm, the inner diameter is 3.077mm, and the width of a split gap is 0.5 mm.

5. A miniaturized rectangular patch array antenna as claimed in claim 1, wherein: the bottom plate (10) is an FR4epoxy resin plate with the width of 62.5mm and the thickness of 2.4 mm.

6. A miniaturized rectangular patch array antenna as claimed in claim 1, wherein: the array element I (5) and the array element II (9) are provided with a plurality of array elements.