CN112467398A - Millimeter wave flexible circular antenna array - Google Patents
Millimeter wave flexible circular antenna array Download PDFInfo
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- CN112467398A CN112467398A CN202011187742.1A CN202011187742A CN112467398A CN 112467398 A CN112467398 A CN 112467398A CN 202011187742 A CN202011187742 A CN 202011187742A CN 112467398 A CN112467398 A CN 112467398A
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- antenna array
- antenna
- flexible
- millimeter wave
- circular
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a millimeter wave flexible circular antenna array which comprises a flexible medium substrate, wherein an antenna array is arranged on the flexible medium substrate and comprises a plurality of antenna units, the antenna units are connected through microstrip lines, the antenna array is symmetrically arranged along the axis of the flexible medium substrate, and a metal round hole is formed in the center of the antenna array. The millimeter wave flexible circular antenna array structure is light in weight and small in size, improves the flexibility of the antenna on the premise of ensuring the antenna array performance, and is good in conformality between the antenna and equipment.
Description
Technical Field
The invention relates to a circular antenna array, in particular to a millimeter wave flexible circular antenna array.
Background
As a key component of wireless communication systems, both transmission and reception of radio waves are accomplished by means of antennas. In the field of antenna research, the conformity of an antenna with an installation environment has been a research hotspot. With the development of new technologies such as wearable devices, there is also an increasing need for high integration of antennas with devices. On the other hand, with the advancement and upgrading of technology, communication systems are also moving towards higher operating frequency bands and even millimeter wave bands, so as to obtain smaller system volume, wider operating bandwidth and better system performance. The flexible electronic technology is a new technology, and various devices are manufactured on a light and thin flexible substrate which can be bent and stretched at will to form a flexible circuit. The antenna based on the flexible dielectric substrate can be bent and stretched, so that the integration level of the antenna and equipment is greatly improved. However, the existing rectangular antenna array has many antenna units, the performance of the antenna after bending changes greatly, the metal loss is high, and the performance is not stable enough under the bending condition, so the conformality is poor, and the integration of an equipment system is not facilitated.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a millimeter wave flexible circular antenna array which is light in weight, small in size, bendable, low in metal loss, good in conformality and beneficial to integration.
The technical scheme is as follows: the millimeter wave flexible circular antenna array comprises a flexible medium substrate, wherein an antenna array is arranged on the flexible medium substrate and comprises a plurality of antenna units, the antenna units are connected through microstrip lines, the antenna array is symmetrically arranged along the axis of the flexible medium substrate, and a metal round hole is formed in the center of the antenna array.
The antenna unit is a patch antenna unit, the antenna array adopts center feed, a feed point is inserted into the patch antenna unit, the antenna unit is matched in an impedance conversion mode, internal feed is carried out inside the patch antenna unit through a microstrip line, the microstrip line extends into the patch antenna unit through a gap between the patch antenna units, the patch antenna unit is a rectangular patch, the radius of a flexible medium substrate is a circular substrate with the radius of 25-35 mm, the thickness is 0.1-0.15 mm, and the dielectric constant is 2.2-2.5.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: 1. the antenna array is a sparse array, the number of antenna units is small, the performance change is not large, the metal loss is low, and the efficiency is improved; 2. the antenna performance change of the circular array after bending is smaller than that of the rectangular array after bending. The performance is kept stable under various bending conditions, so the circular array is more suitable for conformal and is more beneficial to the integration of equipment systems. The structure light in weight, small, under the prerequisite of guaranteeing the antenna array performance, improved the bendability of antenna, the conformal is good between antenna and equipment.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic diagram of simulation results of the present invention: (a) return loss S11A simulation graph; (b) a directional diagram of the E surface; (c) h-plane directional diagram.
Detailed Description
As shown in fig. 1, the millimeter wave flexible circular antenna array comprises a flexible dielectric substrate 1, an antenna array 2 is arranged on the flexible dielectric substrate 1, the antenna array 2 comprises 52 patch antenna units, 8 rows are provided, the number of the patch antenna units in each row is 4, 6, 8, 6 and 4, the patch antenna units are rectangular patches, the length is 3.1mm, the width is 2.9mm, the antenna units are connected with each other through microstrip lines 3, the antenna array 2 is symmetrically arranged along the axis of the flexible dielectric substrate 1, a metal round hole 4 is arranged in the center of the antenna array 2, the antenna array 2 adopts center feeding, feeding points are inserted into the patch antenna units, antenna unit matching is performed in an impedance conversion manner, internal feeding is performed inside the patch antenna units through microstrip lines, and the microstrip lines extend into the patch antenna units through gaps between the patch antenna units, the radius of the flexible medium substrate 1 is 28mm, the thickness is 0.127mm, and the dielectric constant is 2.2.
When the antenna is used, signals are transmitted to each antenna unit in the antenna array from the metal round holes 4 through the microstrip line 3, and return loss S is caused11The simulation graph is shown in fig. 2(a), the return loss reaches 41.5dB at 40.6GHz, the E-plane directional diagram and the H-plane directional diagram are shown in fig. 2(b) and fig. 2(c), the E-plane gain is 16.5dBi, and the H-plane gain is 16.5 dBi.
Claims (6)
1. The millimeter wave flexible circular antenna array is characterized by comprising a flexible medium substrate (1), wherein an antenna array (2) is arranged on the flexible medium substrate (1), the antenna array (2) comprises a plurality of antenna units, the antenna units are connected through microstrip lines (3), the antenna array (2) is symmetrically arranged along the axis of the flexible medium substrate (1), and a metal round hole (4) is formed in the center of the antenna array (2).
2. The millimeter-wave flexible circular antenna array of claim 1, wherein the antenna elements are patch antenna elements.
3. The millimeter wave flexible circular antenna array according to claim 2, wherein the antenna array (2) adopts center feeding, and the feeding points are inserted into patch antenna elements to perform antenna element matching in an impedance transformation manner.
4. The mmwave flexible circular antenna array according to claim 2, characterized in that the patch antenna elements are internally fed by microstrip lines (3) which extend into the patch antenna elements through spaced slots between the patch antenna elements.
5. The millimeter-wave flexible circular antenna array of claim 2, wherein the patch antenna elements are rectangular patches.
6. The millimeter wave flexible circular antenna array according to claim 1, wherein the flexible dielectric substrate (1) is a circular substrate with a radius of 25-35 mm, a thickness of 0.1-0.15 mm and a dielectric constant of 2.2-2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187742.1A CN112467398A (en) | 2020-10-30 | 2020-10-30 | Millimeter wave flexible circular antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187742.1A CN112467398A (en) | 2020-10-30 | 2020-10-30 | Millimeter wave flexible circular antenna array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112467398A true CN112467398A (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011187742.1A Pending CN112467398A (en) | 2020-10-30 | 2020-10-30 | Millimeter wave flexible circular antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112467398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036457A (en) * | 2021-03-22 | 2021-06-25 | 重庆大学 | Flexible antenna array based on microwave energy transmission |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887614A (en) * | 2014-03-24 | 2014-06-25 | 电子科技大学 | Laminated high-gain circular polarization micro-strip array antenna based on LTCC |
| CN206098694U (en) * | 2016-09-14 | 2017-04-12 | 安徽大学 | Microstrip array antenna |
| CN107831597A (en) * | 2017-09-18 | 2018-03-23 | 华南理工大学 | A kind of new generation bimodulus optical eddy light beam circular polarised array antenna |
-
2020
- 2020-10-30 CN CN202011187742.1A patent/CN112467398A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103887614A (en) * | 2014-03-24 | 2014-06-25 | 电子科技大学 | Laminated high-gain circular polarization micro-strip array antenna based on LTCC |
| CN206098694U (en) * | 2016-09-14 | 2017-04-12 | 安徽大学 | Microstrip array antenna |
| CN107831597A (en) * | 2017-09-18 | 2018-03-23 | 华南理工大学 | A kind of new generation bimodulus optical eddy light beam circular polarised array antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036457A (en) * | 2021-03-22 | 2021-06-25 | 重庆大学 | Flexible antenna array based on microwave energy transmission |
| CN113036457B (en) * | 2021-03-22 | 2022-07-22 | 重庆大学 | Flexible antenna array based on microwave energy transmission |
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