CN110534904B - House-shaped multi-frequency antenna with coplanar waveguide feed - Google Patents
House-shaped multi-frequency antenna with coplanar waveguide feed Download PDFInfo
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- CN110534904B CN110534904B CN201910811617.4A CN201910811617A CN110534904B CN 110534904 B CN110534904 B CN 110534904B CN 201910811617 A CN201910811617 A CN 201910811617A CN 110534904 B CN110534904 B CN 110534904B
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- 239000004020 conductor Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
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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
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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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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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
- H01Q5/10—Resonant antennas
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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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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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 invention discloses a house-shaped multi-frequency antenna with coplanar waveguide feed, which comprises a house-shaped radiation unit, a right microstrip line radiation unit, a left microstrip line radiation unit and an independent microstrip line radiation unit, wherein the house-shaped radiation unit, the right microstrip line radiation unit, the left microstrip line radiation unit and the independent microstrip line radiation unit radiate signals of different frequency bands, and further comprises a coplanar waveguide feed part matched with each frequency band; the coplanar waveguide feed part is placed in a grounding way, the house-shaped radiation unit is connected with the top end of the coplanar waveguide feed part through a microstrip line, the right microstrip line radiation unit is connected with the right side of the bottom of the house-shaped radiation unit, the left microstrip line radiation unit is connected with the left side of the bottom of the house-shaped radiation unit, and the independent microstrip line radiation unit is arranged close to the house-shaped radiation unit; the length of the coplanar waveguide feed part is the same as that of the antenna. The antenna can meet the technical requirements of multi-band WPAN communication from a 500M frequency band, and meanwhile, the coplanar waveguide is adopted for feeding, so that the antenna is convenient to integrate with a planar circuit and has a simple structure.
Description
Technical Field
The invention belongs to the field of communication equipment, and particularly relates to a coplanar waveguide fed house-shaped multi-frequency antenna.
Background
In recent years, wireless communication technology has been rapidly advancing, and WPAN (wireless personal area network communication technology) has emerged. WPAN is a personal area network that uses wireless connections, typically operating within 10 meters. It is used for communication between personal devices such as mobile phones, computers, etc. There are various wireless communication technologies in a wireless personal area network, such as: bluetooth, ZigBee, etc., which have a defined frequency standard. Among these frequency standards are Sub-GHz bands conforming to the IEEE802.15.4/4g standard, and also 2.4GHz bands. Due to the existence of various frequency standards, the conventional single-band antenna cannot meet the requirements of certain multiband WPAN communication application fields.
Disclosure of Invention
In order to solve the above problems, the present invention provides a coplanar waveguide fed house-shaped multi-frequency antenna.
The technical purpose is achieved, the technical effect is achieved, and the invention is realized through the following technical scheme:
a house-shaped multi-frequency antenna with coplanar waveguide feed comprises a house-shaped radiation unit, a right microstrip line radiation unit, a left microstrip line radiation unit and an independent microstrip line radiation unit which radiate signals of different frequency bands, and further comprises a coplanar waveguide feed part which is matched with each frequency band; the coplanar waveguide feed part is placed in a grounding way, the house-shaped radiation unit is connected with the top end of the coplanar waveguide feed part through a microstrip line, the right microstrip line radiation unit is connected with the right side of the bottom of the house-shaped radiation unit, the left microstrip line radiation unit is connected with the left side of the bottom of the house-shaped radiation unit, and the independent microstrip line radiation unit is arranged close to the house-shaped radiation unit; the length of the coplanar waveguide feed part is the same as that of the antenna.
As a further improvement of the invention, the coplanar waveguide feed part comprises a conductor strip positioned in the center and metal planes which are grounded on two sides.
As a further improvement of the invention, the coplanar waveguide feed part is connected with the bottom of the house-shaped radiating element through a conductor strip.
As a further improvement of the invention, the room-shaped radiation unit comprises a room-shaped main body arranged below and two antennae symmetrically arranged at the top, and a narrow slit parallel to the horizontal plane is symmetrically etched on the left side and the right side of the room-shaped radiation unit.
As a further improvement of the invention, the house-shaped main body comprises a rectangular parallelepiped at the lower end and a triangular roof at the upper end, and the narrow slit is positioned in the rectangular parallelepiped.
As a further improvement of the present invention, the left microstrip line radiation unit is composed of two connected L-shaped microstrip lines, and includes a left L-shaped microstrip line connected to the bottom of the room-shaped radiation unit and an inverted L-shaped microstrip line having one end close to the top of the room-shaped radiation unit, and the two L-shaped microstrip lines are connected to each other through a microstrip line in the vertical direction.
As a further improvement of the invention, the horizontal end of the independent microstrip line radiation unit is close to an inverted L-shaped microstrip at the connection position of the house-shaped main body and the antenna of the house-shaped radiation unit.
As a further improvement of the invention, the method comprises the following steps.
The invention has the beneficial effects that: the antenna can meet the technical requirements of multi-band WPAN communication from a 500M frequency band, and meanwhile, the coplanar waveguide is adopted for feeding, so that the antenna is convenient to integrate with a planar circuit and has a simple structure.
Drawings
Fig. 1 is a front view of a coplanar waveguide fed room-shaped multifrequency antenna of the present invention;
FIG. 2 is a simulation result of the reflection coefficient S11 parameter of the antenna;
fig. 3 is a 500MHz normalized radiation pattern of a coplanar waveguide fed room multi-frequency antenna;
FIG. 4 is a 900MHz normalized radiation pattern of a coplanar waveguide fed room multi-frequency antenna;
FIG. 5 is a 1500MHz normalized radiation pattern of a coplanar waveguide fed room multi-frequency antenna;
fig. 6 is a 2400MHz normalized radiation pattern of a coplanar waveguide fed room-shaped multi-frequency antenna;
wherein: the antenna comprises a 1-coplanar waveguide feed part, a 2-roof-shaped radiating element, a 3-right microstrip line radiating element, a 4-left microstrip line radiating element and a 5-independent microstrip line radiating element.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
The house-shaped multi-frequency antenna with coplanar waveguide feed shown in fig. 1 comprises a house-shaped radiation unit 2, a right microstrip line radiation unit 3, a left microstrip line radiation unit 4 and an independent microstrip line radiation unit 5 which radiate signals of different frequency bands, and further comprises a coplanar waveguide feed part 1 matched with each frequency band; the coplanar waveguide feed part 1 is grounded, the house-shaped radiation unit 2 is connected with the top end of the coplanar waveguide feed part 1 through a microstrip line, the right microstrip line radiation unit 3 is connected with the right side of the bottom of the house-shaped radiation unit 2, the left microstrip line radiation unit 4 is connected with the left side of the bottom of the house-shaped radiation unit 2, and the independent microstrip line radiation unit 5 is arranged close to the house-shaped radiation unit 2; the length of the coplanar waveguide feed portion 1 is the same as the length of the antenna.
Specifically, the coplanar waveguide feeding portion 1 includes a conductor strip at the center and metal planes grounded at both sides. The width of the central conductor strip of the coplanar waveguide feed part 1 can affect the matching of each frequency band and cannot exceed the distance between the metal grounds at the two sides of the coplanar waveguide feed part. The coplanar waveguide feed part 1 is connected with the bottom of the house-shaped radiating element 2 through a conductor strip. The width of the conductor strip is W5, the height of the metal surface is L5, and the width is W3.
The room-shaped radiation unit 2 is used for generating 2400MHz radiation, and comprises a room-shaped main body arranged below and two antennae symmetrically arranged at the top, wherein a narrow slit parallel to the horizontal plane is symmetrically etched on the left side and the right side of the room-shaped radiation unit 2, so that the current propagation path is changed, and the length and the width of the narrow slit are adjusted to be beneficial to adjusting the matching of each frequency band. The house-shaped main body comprises a cuboid at the lower end and a triangular roof above the cuboid, and the narrow slit is positioned in the cuboid. The width of the cuboid is W1, and the height of the cuboid is L4; the horizontal width corresponding to the roof slope is W4, and the height from the bottom of the slope to the top of the antenna is L6; the length of the narrow slit is W2.
The right microstrip line radiating element 3 is used for generating radiation of 1500MHz, and is formed by two mutually perpendicular and connected microstrip lines with the width of W9, and the shape of the right microstrip line radiating element is L-shaped, the horizontal length of the right microstrip line radiating element is W8, and the vertical height of the right microstrip line radiating element is L1.
The left microstrip line radiating unit 4 is used for generating 500MHz radiation and is composed of two connected L-shaped microstrip lines, so that the effect of prolonging a current path is achieved. The antenna comprises a left L-shaped microstrip line at the bottom of the room-shaped radiating unit 2 and an inverted L-shaped microstrip line with one end close to the top of the room-shaped radiating unit 2, wherein the two L-shaped microstrip lines are mutually connected through a microstrip line in the vertical direction, and the horizontal right end of the two L-shaped microstrip lines is close to the connection part of the room-shaped main body of the room-shaped radiating unit 2 and the antenna. The inverted L-shaped microstrip line is formed by vertically connecting two microstrip lines with the width of W12, the horizontal length of the microstrip line is W10, and the vertical height of the microstrip line is L3. The L-shaped microstrip line connected to the bottom of the roof-shaped radiating element 2 is formed by connecting a microstrip line with a length W6 and a width W13 in the horizontal direction and a microstrip line with a width W7 and a height L8 in the vertical direction. The height from the bottom of the connecting position of the two L-shaped microstrip lines to the lowest point of the left microstrip line radiation unit 4 is L7, and the height from the top of the connecting position of the two L-shaped microstrip lines to the vertical angle of the inverted L-shaped microstrip line is L9.
The independent microstrip line radiating unit 5 is used for generating 900MHz radiation, the horizontal left end of the independent microstrip line radiating unit is close to the connection position of the house-shaped main body and the antenna of the house-shaped radiating unit 2, and the independent microstrip line radiating unit is an inverted L-shaped microstrip consisting of two microstrip lines with the width of W12, the horizontal length of the microstrip line radiating unit is W11, and the vertical height of the microstrip line radiating unit is L2.
In the embodiment of the present invention, when the antenna substrate is a Rogers RO4350 substrate with a thickness of 0.6mm (r ═ 3.66, tan ═ 0.004), the antenna structure is optimally designed by applying the simulation software HFSS, and then the length and the width of the whole antenna are 108mm and 128mm, respectively. The following parameters are adopted for each size of the antenna:
50mm for W1, 15mm for W2, 60.8mm for W3, 19.7mm for W4, 3.8mm for W5, 33mm for W6, 5mm for W7, 7mm for W8, 5mm for W9, 51.8mm for W10, 51.8mm for W11, 3.3mm for W12, 4.3mm for W13, 7mm for L1, 80mm for L2, 83.3mm for L3, 45.1mm for L4, 20mm for L5, 24.8mm for L6, 19mm for L7, 7mm for L8, 7mm for L9 mm. Further, the width of the slit on the roof-shaped radiating element 2 is 1 mm.
Fig. 2 shows the simulation result of the antenna reflection coefficient S11 parameter. As can be seen from FIG. 2, when the reflection coefficient S11< -10dB (corresponding to the standing wave ratio VSWR is less than or equal to 2) of the antenna is satisfied, the antenna can work at 487-500/883-932/883-932/1290-1650/2150-2535 MHz at the same time. Table 1 lists the parameters of the antenna such as reflection coefficient, antenna efficiency, gain, etc. at the resonance point of each frequency. The gains of all resonance points are 6.9dBi (500MHz), 4.8dBi (900MHz), 4.1dBi (1500MHz) and 4.6dBi (1500MHz), and the conventional application requirements can be met.
TABLE 1 parameters of the antenna
Fig. 3 to 6 are normalized radiation pattern of each frequency point, wherein fig. 3 is a normalized radiation pattern of 500MHz of a coplanar waveguide fed house-shaped multi-frequency antenna; FIG. 4 is a 900MHz normalized radiation pattern of a coplanar waveguide fed room multi-frequency antenna; FIG. 5 is a 1500MHz normalized radiation pattern of a coplanar waveguide fed room multi-frequency antenna; fig. 6 is a 2400MHz normalized radiation pattern for a coplanar waveguide fed room multi-frequency antenna. The normalized radiation pattern of each frequency point shows that the antenna can meet the communication requirement of the wireless personal area network in the directivity and can be used in the communication field.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A house-shaped multi-frequency antenna with coplanar waveguide feed is characterized in that: the antenna comprises a house-shaped radiation unit (2) for radiating signals of different frequency bands, a right microstrip line radiation unit (3), a left microstrip line radiation unit (4) and an independent microstrip line radiation unit (5), and further comprises a coplanar waveguide feed part (1) matched with each frequency band; the house-shaped radiation unit (2) comprises a house-shaped main body arranged below and two antennae symmetrically arranged at the top, and a narrow slit parallel to the horizontal plane is symmetrically etched on the left side and the right side of the house-shaped radiation unit (2); the house-shaped main body comprises a cuboid at the lower end and a triangular roof above the cuboid, and the narrow slit is positioned in the cuboid;
the coplanar waveguide feed part (1) is placed in a grounding mode, the room-shaped radiation unit (2) is connected with the top end of the coplanar waveguide feed part (1) through a microstrip line, the right microstrip line radiation unit (3) is connected with the right side of the bottom of the room-shaped radiation unit (2), the left microstrip line radiation unit (4) is connected with the left side of the bottom of the room-shaped radiation unit (2), and the independent microstrip line radiation unit (5) is arranged close to the room-shaped radiation unit (2); the left microstrip line radiation unit (4) is composed of two connected L-shaped microstrip lines, the two connected L-shaped microstrip lines comprise an L-shaped microstrip line connected with the left side of the bottom of the room-shaped radiation unit (2) and an inverted L-shaped microstrip line with one end close to the top of the room-shaped radiation unit (2), and the two L-shaped microstrip lines are connected with each other through a microstrip line in the vertical direction; the independent microstrip line radiation unit (5) is an inverted L-shaped microstrip, and the horizontal end of the independent microstrip line radiation unit is close to the connection position of the house-shaped main body of the house-shaped radiation unit (2) and the antenna;
the length of the coplanar waveguide feed portion (1) is the same as the length of the antenna.
2. A coplanar waveguide fed room multifrequency antenna of claim 1, wherein: the coplanar waveguide feed part (1) comprises a conductor strip in the center and metal surfaces grounded on both sides.
3. A coplanar waveguide fed room multifrequency antenna of claim 1, wherein: the coplanar waveguide feed part (1) is connected with the bottom of the house-shaped radiating element (2) through a conductor strip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910811617.4A CN110534904B (en) | 2019-08-30 | 2019-08-30 | House-shaped multi-frequency antenna with coplanar waveguide feed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910811617.4A CN110534904B (en) | 2019-08-30 | 2019-08-30 | House-shaped multi-frequency antenna with coplanar waveguide feed |
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| CN110534904A CN110534904A (en) | 2019-12-03 |
| CN110534904B true CN110534904B (en) | 2020-12-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100820777B1 (en) * | 2006-11-16 | 2008-04-11 | 한양대학교 산학협력단 | Multi-band planar monopole antenna |
| CN103490155A (en) * | 2013-09-24 | 2014-01-01 | 西安电子科技大学 | Four-frequency-band printed antenna applied to wireless communications |
| CN110112558A (en) * | 2019-06-03 | 2019-08-09 | 安徽大学 | A kind of four frequency range monopole antenna of compact based on coplanar wave guide feedback |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664307B (en) * | 2012-05-18 | 2014-05-14 | 哈尔滨工业大学 | Slot-loaded multi-frequency printed antenna |
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2019
- 2019-08-30 CN CN201910811617.4A patent/CN110534904B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100820777B1 (en) * | 2006-11-16 | 2008-04-11 | 한양대학교 산학협력단 | Multi-band planar monopole antenna |
| CN103490155A (en) * | 2013-09-24 | 2014-01-01 | 西安电子科技大学 | Four-frequency-band printed antenna applied to wireless communications |
| CN110112558A (en) * | 2019-06-03 | 2019-08-09 | 安徽大学 | A kind of four frequency range monopole antenna of compact based on coplanar wave guide feedback |
Non-Patent Citations (2)
| Title |
|---|
| A Compact Dual-Band Octagonal Slotted Printed Monopole Antenna for WLAN/WiMAX and UWB Applications;PV Naidu et al.;《Journal of Microwaves,Optoelectron and Electromagn》;20150630;1-13 * |
| 双极化共面波导馈电缝隙单极子天线研究;宋立众 等.;《航空兵器》;20190615;46-51 * |
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