CN115000691A - Compact broadband filtering antenna - Google Patents
Compact broadband filtering antenna Download PDFInfo
- Publication number
- CN115000691A CN115000691A CN202210511728.5A CN202210511728A CN115000691A CN 115000691 A CN115000691 A CN 115000691A CN 202210511728 A CN202210511728 A CN 202210511728A CN 115000691 A CN115000691 A CN 115000691A
- Authority
- CN
- China
- Prior art keywords
- short
- dielectric substrate
- rectangular
- patch
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to a compact broadband filter antenna, which belongs to the field of wireless energy transmission and comprises a rectangular medium substrate, wherein a grounding metal plate is arranged on the lower surface of the medium substrate, two short-circuit parasitic patches are arranged on two short-circuit parts on the upper surface of the medium substrate, a row of metal through holes distributed along the short edge of the medium substrate are respectively arranged on the two short-circuit parts of the medium substrate, and the metal through holes penetrate through the medium substrate, the grounding metal plate and the short-circuit parasitic patches; a central rectangular driving patch is arranged in the middle of the upper surface of the medium substrate, and a pair of long rectangular grooves and a pair of short rectangular grooves are etched on one short edge of the central rectangular driving patch; the low-voltage power supply further comprises a bottom feed excitation source, wherein the bottom feed excitation source penetrates through the dielectric substrate, the grounding metal plate and the central rectangular driving patch. The invention further widens the impedance bandwidth and improves the frequency selectivity at low frequency.
Description
Technical Field
The invention belongs to the field of wireless energy transmission, and relates to a compact broadband filtering antenna.
Background
Electromagnetic waves are researched and applied to the communication field from maxwell to hertz since the last century, the communication field is changed from the earth-cover in recent years, and the heat of communication reaches a peak since 5G yuan year 2020, and the term "antenna" is more in the field of vision. With the rapid development of modern radio frequency communication and semiconductor technology, there are higher requirements on the design of traditional antenna and filter, and the development trend of system miniaturization and low power consumption is one trend.
Today, with the rapid development of the communications industry, various wireless devices are present in our lives, and this development brings new problems, and different wireless devices are not isolated from each other in space. In the face of this problem, how to reduce the interference between each other is a problem worthy of study. In the conventional method, a filter is a key device in the radio frequency circuit, and a solution is to add a filter to the circuit to filter out unnecessary waves. The filters are usually cascaded after the transmit and receive antennas through additional matching networks or transmission lines, which inevitably results in large circuit size and reduced overall performance of the system. The filter antenna combines the filter and the antenna together, and can effectively realize the reduction of the circuit size and the loss.
Disclosure of Invention
In view of the above, the present invention provides a compact broadband filtering antenna for simplifying the overall structure, reducing the cost, and improving the transmission effect.
In order to achieve the purpose, the invention provides the following technical scheme:
a compact broadband filter antenna comprises a rectangular dielectric substrate, wherein a grounding metal plate is arranged on the lower surface of the dielectric substrate, short-circuit parasitic patches are arranged on two short side parts of the upper surface of the dielectric substrate, a row of metal through holes distributed along the short side of the dielectric substrate are respectively arranged on the two short side parts of the dielectric substrate, and the metal through holes penetrate through the dielectric substrate, the grounding metal plate and the short-circuit parasitic patches; a central rectangular driving patch is arranged in the middle of the upper surface of the medium substrate, and a pair of long rectangular grooves and a pair of short rectangular grooves are etched on one short edge of the central rectangular driving patch; the low-voltage power supply is characterized by further comprising a bottom feed excitation source, wherein the bottom feed excitation source penetrates through the dielectric substrate, the grounding metal plate and the central rectangular driving patch.
Further, the thicknesses of the grounding metal plate, the central rectangular driving patch and the pair of short circuit parasitic patches are the same.
Further, the pair of long rectangular grooves and the pair of short rectangular grooves are symmetrically distributed along the central axis on one short side of the central rectangular driving patch.
Further, the length of the long rectangular groove is 12.2mm, the length of the short rectangular groove is 10.1mm, the width of the short rectangular groove is 0.3mm, and the distance between the long groove and the short groove is 0.6 mm.
Furthermore, the diameter d of the metal through holes is 1mm, and the center-to-center distance s of the metal through holes is 1.2 mm.
Further, the length of the central rectangular driving patch is 19.5mm, the width of the central rectangular driving patch is 14.5mm, and the length of the short circuit parasitic patch is 9.8mm, and the width of the short circuit parasitic patch is 12.1 mm.
Further, the diameter of the bottom feed excitation source is 0.32 mm.
Further, the dielectric substrate had a relative dielectric constant of 2.2 and a loss tangent of 0.0009.
The invention has the beneficial effects that:
(1) the short-circuit parasitic patch is used for being coupled with the capacitor of the driving patch, and a resonance point and a high-frequency radiation zero point are increased, so that the bandwidth is enlarged, and the high-frequency filtering effect is improved. In addition, two pairs of rectangular grooves are etched in the driving patch so as to increase the effective path length of surface current, thereby not only obtaining a low-frequency radiation zero point to improve the low-frequency filtering effect, but also generating a new resonance frequency point, reducing the working central frequency of the antenna and increasing the relative bandwidth.
(2) The working center frequency of the antenna is 4.95GHz, the relative bandwidth is 16.5% (4.55-5.37GHz), and the maximum gain can reach 6.3 dBi.
(3) High bandwidth is achieved while maintaining low profile and miniaturization. The height of the cross section is 0.026 lambda 0 Of size only 0.19 lambda 0 2 . The bandwidth of the antenna is improved obviously, the effect of small size and low profile is guaranteed, the purpose of miniaturization design is achieved, and the antenna has certain engineering practical value.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For a better understanding of the objects, aspects and advantages of the present invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a perspective view of a compact broadband filtering antenna;
FIG. 2 is a schematic size diagram of a compact broadband filtering antenna;
FIG. 3 is a simulation and actual graph of S-parameter and achievable gain curves for a compact broadband filtering antenna;
fig. 4 is an E-plane and H-plane normalized directional diagram of 3 resonant frequency points of the compact broadband filter antenna, where (a) is a 4.67GHz E-plane directional diagram, (b) is a 4.67GHz H-plane directional diagram, (c) is a 5.17GHz E-plane directional diagram, (d) is a 5.17GHz H-plane directional diagram, (E) is a 5.34GHz E-plane directional diagram, and (f) is a 5.34GHz H-plane directional diagram.
Reference numerals: the device comprises a dielectric substrate 1, a grounding metal plate 2, a metal through hole 3, a central rectangular driving patch 4, a long rectangular groove 5, a bottom feed excitation source 6, a short circuit parasitic patch 7 and a short rectangular groove 8.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1-4, the invention provides a compact broadband filter antenna, which comprises a dielectric substrate 1, a grounding metal plate 2, a metal through hole 3, a central rectangular driving patch 4, a pair of long rectangular slots 5, a bottom feed excitation source 6, a pair of short circuit parasitic patches 7 and a pair of short rectangular slots 8; the upper surface of the dielectric substrate 1 is provided with a central rectangular driving patch 4 and a pair of short circuit parasitic patches 7, and the lower surface of the dielectric substrate 1 is provided with a grounding metal plate 2. A pair of long rectangular grooves 5 and a pair of short rectangular grooves 8 are etched on the central rectangular driving patch 4; the bottom feed excitation source 6 penetrates through the dielectric substrate 1, the grounding metal plate 2 and the central rectangular driving patch 4;
the metal through holes 3 penetrate through the dielectric substrate 1, the grounding metal plate 2 and the pair of short circuit parasitic patches 7 and are distributed on one side of the short circuit parasitic patches 7;
the ground plane and the dielectric substrate have the same size, and both the ground plane and the dielectric substrate have the length of 43.7mm and the width of 16.6 mm. The length of the central driving patch is 19.5mm, the width of the central driving patch is 14.5mm, and the length of the pair of short circuit parasitic patches is 12.1mm, and the width of the pair of short circuit parasitic patches is 9.8 mm. The thickness of the dielectric substrate is 1.575mm, and the copper thicknesses of the grounding plane, the central driving patch and the pair of short circuit parasitic patches are all 0.017 mm.
The metal through holes penetrate through the ground plane, the dielectric substrate and the short circuit parasitic patch, the diameter d of each metal through hole is 1mm, and the center distance of the metal through holes is 1.5 mm.
The Rogers Duroid 5880 is selected as The dielectric substrate material, The relative dielectric constant is 2.2, and The loss tangent is 0.0009.
After the initial design is completed, high-frequency electromagnetic simulation software HFSS2020.R2 is used for simulation analysis, and the dimensions of various parameters obtained after simulation optimization are shown in Table 1:
TABLE 1
| L＝43.7 | L 1 ＝19.5 | L 2 ＝9.8 | W＝16.6 |
| W 1 ＝14.5 | W 2 ＝12.1 | Ws＝0.3 | g 1 ＝12.2 |
| g2＝10.1 | d＝1.0 | d1＝3.4 | d2＝2.5 |
| d3＝0.6 | s＝1.2 | h＝1.575 |
Referring to fig. 2, L, W shows the length and width, L, of the dielectric substrate and ground plane 1 、W 1 The length and the width of a central driving patch are L2 and W2, the length and the width of a short circuit parasitic patch are Ws, the width of a long rectangular groove and a short rectangular groove are g1, the length of the long rectangular groove and the length of a short rectangular groove are g2, d is the diameter of a metal through hole, d1 is the vertical distance between the short rectangular groove and an excitation source, d2 is the distance between the central driving patch and the short circuit parasitic patch, d3 is the distance between the long rectangular groove and the short rectangular groove, s is the distance between the centers of two metal through holes, and h is the thickness of a medium substrate.
The reflection coefficient | S of a substrate integrated waveguide filter antenna designed using HFSS according to the parameters in Table 1 11 And carrying out simulation analysis on the characteristic parameters and the achievable gains, wherein the analysis result is as follows:
FIG. 3 is a graph of S-parameters obtained from simulation and achievable gain simulation and actual measurement versus frequency for the present invention. As shown in the figure, the impedance bandwidth of S11 below-10 dB is slightly enlarged compared with the simulation result from the measured result. The working frequency band is 4.55 to 5.37GHz, and the bandwidth reaches 16.5 percent. The achievable gain curves tested show that the maximum achievable gain in band reaches 6.3dBi and the gain response is flat in the pass band. In addition, the upper edge and the lower edge of the passband are respectively provided with a radiation zero point, so that the filtering effect is improved. In fig. 4, (a) to (f) show simulated and actually measured patterns of the antenna in the E-plane and the H-plane at three resonant frequency points, respectively, and it can be seen that the antenna has good edge radiation characteristics.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (8)
1. A compact wideband filtering antenna, characterized by: the dielectric substrate comprises a rectangular dielectric substrate, wherein a grounding metal plate is arranged on the lower surface of the dielectric substrate, short-circuit parasitic patches are arranged on two short side parts of the upper surface of the dielectric substrate, a row of metal through holes distributed along the short sides of the dielectric substrate are respectively arranged on the two short side parts of the dielectric substrate, and the metal through holes penetrate through the dielectric substrate, the grounding metal plate and the short-circuit parasitic patches; a central rectangular driving patch is arranged in the middle of the upper surface of the medium substrate, and a pair of long rectangular grooves and a pair of short rectangular grooves are etched on one short edge of the central rectangular driving patch; the low-voltage power supply is characterized by further comprising a bottom feed excitation source, wherein the bottom feed excitation source penetrates through the dielectric substrate, the grounding metal plate and the central rectangular driving patch.
2. The compact wideband filtering antenna of claim 1, wherein: the thicknesses of the grounding metal plate, the central rectangular driving patch and the pair of short circuit parasitic patches are the same.
3. The compact wideband filtering antenna of claim 1, characterized in that: the pair of long rectangular grooves and the pair of short rectangular grooves are symmetrically distributed on one short side part of the central rectangular driving patch along the central axis.
4. The compact wideband filtering antenna of claim 1, wherein: the length of the long rectangular groove is 12.2mm, the length of the short rectangular groove is 10.1mm, the width of the short rectangular groove is 0.3mm, and the distance between the long groove and the short groove is 0.6 mm.
5. The compact wideband filtering antenna of claim 1, wherein: the diameter of the metal through holes is d equal to 1mm, and the center distance of the metal through holes is s equal to 1.2 mm.
6. The compact wideband filtering antenna of claim 1, wherein: the length of the central rectangular driving patch is 19.5mm, the width of the central rectangular driving patch is 14.5mm, and the length of the short circuit parasitic patch is 9.8mm, and the width of the short circuit parasitic patch is 12.1 mm.
7. The compact wideband filtering antenna of claim 1, wherein: the diameter of the bottom feed excitation source is 0.32 mm.
8. The compact wideband filtering antenna of claim 1, wherein: the dielectric substrate has a relative dielectric constant of 2.2 and a loss tangent of 0.0009.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511728.5A CN115000691A (en) | 2022-05-11 | 2022-05-11 | Compact broadband filtering antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210511728.5A CN115000691A (en) | 2022-05-11 | 2022-05-11 | Compact broadband filtering antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115000691A true CN115000691A (en) | 2022-09-02 |
Family
ID=83028091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210511728.5A Pending CN115000691A (en) | 2022-05-11 | 2022-05-11 | Compact broadband filtering antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115000691A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789876A (en) * | 2016-04-19 | 2016-07-20 | 重庆大学 | Compact type ultra-wideband antenna based on parasitic strip |
| US20210057823A1 (en) * | 2019-08-19 | 2021-02-25 | South China University Of Technology | Millimeter wave filtering antenna and wireless communication device |
| US20210151890A1 (en) * | 2019-03-01 | 2021-05-20 | South China University Of Technology | A low-profile dual-polarization filtering magneto-electric dipole antenna |
| CN114284736A (en) * | 2021-12-31 | 2022-04-05 | 厦门大学 | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna |
-
2022
- 2022-05-11 CN CN202210511728.5A patent/CN115000691A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789876A (en) * | 2016-04-19 | 2016-07-20 | 重庆大学 | Compact type ultra-wideband antenna based on parasitic strip |
| US20210151890A1 (en) * | 2019-03-01 | 2021-05-20 | South China University Of Technology | A low-profile dual-polarization filtering magneto-electric dipole antenna |
| US20210057823A1 (en) * | 2019-08-19 | 2021-02-25 | South China University Of Technology | Millimeter wave filtering antenna and wireless communication device |
| CN114284736A (en) * | 2021-12-31 | 2022-04-05 | 厦门大学 | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna |
Non-Patent Citations (1)
| Title |
|---|
| DONG YAN、SHUAI‐YU PAN、BAO‐CANG GUO、KUN‐ZHI HU、HE‐SHENG BI、 RUI‐QIONG WANG、HAOFEI XIE: "A compact single‐layer wideband filtering antenna with capacitively loaded short‐circuited parasitic patches", 《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》, pages 1295 - 1301 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111883917B (en) | Bandwidth reconfigurable dielectric patch filter antenna based on double-slit feed structure | |
| CN111883916B (en) | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure | |
| CN108511924B (en) | Broadband end-fire antenna array for millimeter wave communication system | |
| CN111969313B (en) | High-gain differential dual-polarized antenna based on hollow dielectric patch resonator | |
| CN108134196B (en) | Microstrip antenna and television | |
| CN112713404B (en) | Single-layer broadband microstrip patch antenna | |
| CN112688081A (en) | Broadband cavity-backed planar slot array antenna based on dielectric integrated waveguide | |
| CN111969307B (en) | Symmetrical multi-slot terahertz 6G communication application frequency band antenna | |
| CN108736153B (en) | Three-frequency low-profile patch antenna | |
| CN108777354B (en) | Microstrip patch antenna based on loading of SIW resonant cavity | |
| CN111463562B (en) | Ultra-wideband differential feed PIFA antenna with filtering effect | |
| CN112310630A (en) | Wide-band high-gain printed antenna | |
| CN109860976B (en) | Broadband patch antenna based on differential resonator feed | |
| CN115051154B (en) | Differential broadband end-fire filter antenna based on open stepped slot | |
| CN207517868U (en) | A kind of end-fire circle polarized millimeter wave antenna | |
| CN115000691A (en) | Compact broadband filtering antenna | |
| CN114094329B (en) | Symmetrical top Peano fractal loaded microstrip patch antenna | |
| CN114744404A (en) | Dual-band substrate integrated waveguide filter antenna | |
| CN111326860A (en) | Low cross polarization dual-frequency cavity-backed antenna and wireless communication equipment | |
| CN113328236B (en) | Card-inserted end-fire broadband dielectric resonator antenna | |
| JP3245757U (en) | Antenna with stable impedance for IoT devices | |
| CN115275617A (en) | High-selectivity filtering antenna based on short-circuit parasitic patch | |
| CN114243273B (en) | Compact four-unit ultra-wideband MIMO antenna | |
| CN109841952B (en) | Miniaturized antenna based on fold microstrip line | |
| RU2769428C1 (en) | Small-sized strip antenna of the vhf band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |