CN110474157A - A kind of mobile communication frequency range printed monopole antenna - Google Patents
A kind of mobile communication frequency range printed monopole antenna Download PDFInfo
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- CN110474157A CN110474157A CN201910796216.6A CN201910796216A CN110474157A CN 110474157 A CN110474157 A CN 110474157A CN 201910796216 A CN201910796216 A CN 201910796216A CN 110474157 A CN110474157 A CN 110474157A
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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
- H01Q1/36—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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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Abstract
The invention discloses a kind of mobile communication frequency range printed monopole antennas, belong to microwave technical field, including metal floor, medium substrate and the radiating element being printed on medium substrate, radiating element includes interconnected T shaped microstrip beta radiation unit and tapered microstrip line radiating element, medium substrate, T shaped microstrip beta radiation unit and tapered microstrip line radiating element constitute flat plane antenna, which is vertically fixed on the upper of metal floor by feed microstrip line line；Electric wave signal feed-in source of the feed microstrip line line as antenna, one end are connected in flat plane antenna, and the other end is connected with metal floor.This antenna realizes broadband character, can be applicable to the communications bands such as GSM, LTE and 5G, has a wide range of application.
Description
Technical field
The invention belongs to microwave technical fields, and in particular to a kind of mobile communication frequency range printed monopole antenna.
Background technique
Nineteen twenty-one has used the automobile of first covering communications band on the police car in the U.S..By more than 90 years, with theory
The continuous development of technique and the update of mobile radio telecommunications technology, automobile can miniaturization while realize from
The generally covering of the different mobile communication frequency range of 1G to 5G.Nowadays, mobile communication frequency range mainly includes three frequency ranges: 824-
960MHz, 1710-2690MHz and 3.4GHz-3.6GHz.In general, microstrip antenna is small in size with its, light weight, easy of integration,
Optimal selection of the advantages that low section as small-sized multi-frequency antenna.
Traditional monopole sub-antenna can not be easily integrated on automobile due to volume etc., and printed monopole antenna is logical
It crosses and traditional monopole sub-antenna is printed on medium substrate, overcome the volume defect and bandwidth defect of traditional monopole sub-antenna,
Having concurrently again has similar architectural characteristic and feature performance benefit with microstrip antenna, therefore obtains widely in mobile communication band antenna
Using.
Summary of the invention
Goal of the invention: the purpose of the present invention is to provide a kind of mobile communication frequency range printed monopole antennas, realize width
The requirement of band, increases antenna gain to a certain extent.
Technical solution: to achieve the above object, the invention provides the following technical scheme:
A kind of mobile communication frequency range printed monopole antenna, including metal floor, medium substrate and it is printed on medium base
Radiating element on plate, the radiating element include interconnected T shaped microstrip beta radiation unit and tapered micro-strip beta radiation
Unit, the medium substrate, T shaped microstrip beta radiation unit and tapered microstrip line radiating element constitute flat plane antenna, the plane
Antenna is vertically fixed on the upper of metal floor by feed microstrip line line；The feed microstrip line line is believed as the electric wave of antenna
Number feed-in source, one end are connected in flat plane antenna, and the other end is connected with metal floor.
Further, the dielectric constant of the medium substrate is 4.4, and the metal floor is rectangular metal plate.
Further, the feed microstrip line line is length 14mm, width 2mm；The length of the medium substrate is
65-75 millimeters, width is 55-65 millimeters, with a thickness of 1.4-1.8 millimeters.
Further, the length of the metal floor is 200-400 millimeters, and width is 200-400 millimeters.
Further, the T shaped microstrip beta radiation unit includes connected horizontal rectangular antenna element and vertical rectangle
Antenna element, wherein the length W of horizontal rectangular antenna element is 45-50 millimeters, and width LS is 10-14 millimeters, vertical rectangle day
The length L of line unit is 65-75 millimeters, and width WS is 15-19 millimeters；Wherein, vertical squaerial unit is located at horizontal rectangular
The midpoint of antenna element.
Further, the tapered microstrip line radiating element is symmetrically arranged concave-shaped structure, is divided equally by middle line
For two one side of something, the one side of something include horizontal ZA arranged in parallel while and when ZB, the vertical side ZC and ZD arranged in parallel
Side, wherein ZB is connected when passing through ZE with the side ZD, and ZA is when passing sequentially through ZF, ZG is connected while with ZD, wherein the length on the side ZA
Degree is 8-12 millimeters, and the length on the side ZB is 6-8 millimeters, and the length on the side ZC is 1.5 to 3.5 millimeters, and the length on the side ZD is 20-30 milli
Rice, the length on the side ZE are 20-30 millimeters, and the length on the side ZF is 25-35 millimeters, and the length on the side ZG is 10-20 millimeters.Wherein, ZF
Angle ∠ C=109 ° of angle the ∠ B=133 °, ZD of angle ∠ A=65.4 °, ZG while with ZD while with ZE while with ZG,
Angle ∠ E=160 ° of angle ∠ D=70 °, ZC of the ZB while with ZE while with ZF.
Inventive principle: nowadays, mobile communication frequency range mainly includes three frequency ranges: 824MHz-960MHz, 1710MHz-
2690MHz and 3.4GHz-3.6GHz.The advantages that microstrip antenna is since size is small, and light weight is easy of integration, low section becomes multifrequency
The optimal selection of miniature antenna.Traditional monopole sub-antenna can not be easily integrated on automobile due to volume etc., and be printed
By the way that traditional monopole sub-antenna to be printed on medium substrate, the volume for overcoming traditional monopole sub-antenna lacks brush monopole antenna
It falls into and bandwidth defect, and has concurrently and have similar architectural characteristic and feature performance benefit with microstrip antenna, therefore in mobile communication frequency range day
It is widely used in line.It is well known that either traditional monopole sub-antenna or printed monopole antenna all only one
Resonant frequency point, resonance length are a quarters of wavelength.So increasing antenna frequency band, the beamwidth of antenna is widened, reduces antenna ruler
The very little Main way for becoming research printed monopole antenna.
Traditional monopole antenna is to be disposed vertically the metal column for being about a quarter wavelength on the ground.Utilize mirror
As theory, the surface current on ground is replaced to influence using the monopole of a mirror image below ground, so, analyze monopole
Surface current distribution when can be replaced with the Surface current distribution of the top half of equivalent dipole.It should be noted that
Dipole antenna can have radiation in entire space, and only there is radiation in side to monopole antenna on the ground.When ground is unlimited
Theoretical according to the symmetrical dipole of free space when big, the top half radiation areas of monopole antenna can directly equivalent Cheng Dan
The far-field radiation field of pole sub-antenna:
In formula, r is distance of the source point to site, ImIt is maximum current, L is antenna length, and β is phase constant, FθIt is antenna
Far field normalized radiation pattern.By formula (2) it is found that when θ=90 °, FθIt is a definite value, the i.e. direction of the horizontal direction of antenna
Figure is a circle, and monopole antenna is direction-free.Printed monopole also has similar spy as the improvement of traditional monopole
Property.Traditional monopole antenna because the limitation of volume and section can not be integrated into the confined space, usually by monopole
Antenna is printed on medium substrate integrated to realize.Meanwhile printed monopole is planar antenna, bandwidth is more than traditional monopole
It is wide.Therefore, compared to traditional monopole, printed monopole antenna also has broadband, small in size, easy to process and integrated, valence
The cheap equal many merits of lattice.
Printed monopole mainly has feed microstrip line (microstrip feed line by metal floor, medium substrate and radiation patch composition
Directly it is connected with radiation patch) and coplanar wave guide feedback (microstrip feed line, floor and radiation patch are in same plane).According to metal
The difference of patch shape, printed monopole can be divided into circular patch monopole, rectangular patch monopole, triangle patch monopole
Deng.It is well known that microstrip antenna is also to differ only in printed monopole by metal floor, medium substrate and radiation patch composition
Sub-antenna radiation patch, which corresponds to, does not have metal patch below medium substrate, and the radiation patch of microstrip antenna correspondence has gold below
Belong to bottom plate, forms resonant cavity with radiation patch.Although micro-strip paster antenna and printed monopole antenna belong to flat plane antenna, have
Similar architectural characteristic, but their performance or discrepant.Compared with micro-strip paster antenna, the bandwidth phase of printed monopole
To wider.In addition, generally all very thin thickness, dielectric loss are smaller for the dielectric-slab of printed monopole antenna, it is not easy to by medium
The influence of plate material.
According to monopole theory, the calculation formula of the size of the resonance frequency and radiation patch of printed monopole are as follows:
In formula (4) and formula (5), εeIt is dielectric-slab effective dielectric constant, εrIt is dielectric-slab relative dielectric constant, W is monopole
The width of antenna, L are the length of monopole antenna, and the cascade unit of antenna is W/2+L.Pass through the expression formula of above-mentioned resonance frequency
Size adjusting, general printed monopole then can be carried out by simulation software with the size of primary Calculation printed monopole antenna
The cascade unit of antenna is a quarter of wavelength.The performance for reaching needs in practical application, needs to printed monopole
Antenna is deformed, i.e. change radiation patch, and there are mainly two types of the measures of deformation: cutting and load.For example, when needing to reduce antenna
When size, it can use simulation software and show that the current distribution of antenna analyzes main spoke to obtain the resonant path of antenna
Region is penetrated, appropriate cutting then is carried out to reach antenna miniaturization purpose to non-principal radiation areas.Or it can be pasted in radiation
It is cut into gap on the rational position of piece, changes the current distribution of patch, increases the effective current path of antenna, it is humorous to reduce antenna
Vibration frequency.When needing to increase antenna band, parasitic element can be loaded or load other minor matters, increase the resonator of antenna
To obtaining different resonance frequencies, when different resonance frequencies lean on it is close when, the beamwidth of antenna can also be increased.It can also pass through
Cutting floor forms the structure of defect to realize antenna multifrequency, while improving impedance matching.
The utility model has the advantages that compared with prior art, a kind of mobile communication frequency range printed monopole antenna of the invention, including gold
Possession plate, medium substrate and printing are arranged in medium substrate radiating element, and metal floor is rectangular metal plate, and radiating element is
T shaped microstrip beta radiation unit and tapered microstrip line radiating element are constituted；Medium substrate, T shaped microstrip beta radiation unit and tapered micro-
Band beta radiation unit constitutes a flat plane antenna, which is vertically fixed on the upper of metal floor by feed microstrip line line
Face, one end of feed microstrip line line are connected in the bottom end of microstrip line radiating element, and the other end is connected in metal floor.This antenna realizes
Broadband character can be applicable to the communications bands such as GSM, LTE and 5G, have a wide range of application.
Detailed description of the invention
Fig. 1 is the schematic perspective view of mobile communication frequency range printed monopole antenna；
Fig. 2 is the front view of mobile communication frequency range printed monopole antenna；
Fig. 3 is the reflection coefficient schematic diagram of mobile communication frequency range printed monopole antenna；
Fig. 4 is the antenna pattern in mobile communication frequency range printed monopole antenna face E at frequency 900MHz；
Fig. 5 is the antenna pattern in mobile communication frequency range printed monopole antenna face H at frequency 900MHz；
Fig. 6 is the antenna pattern in mobile communication frequency range printed monopole antenna face E at frequency 2.2GHz；
Fig. 7 is the antenna pattern in mobile communication frequency range printed monopole antenna face H at frequency 2.2GHz；
Fig. 8 is the antenna pattern in mobile communication frequency range printed monopole antenna face E at frequency 3.5GHz；
Fig. 9 is the antenna pattern in mobile communication frequency range printed monopole antenna face H at frequency 3.5GHz；
Appended drawing reference: 1- metal floor；2- medium substrate；3-T shaped microstrip beta radiation unit；4- taper micro-strip beta radiation list
Member；The microstrip-fed line of 5-.
Specific embodiment
The content of patent for a better understanding of the present invention further illustrates this in the following with reference to the drawings and specific embodiments
The technical solution of invention.
As shown in Figs. 1-2, a kind of mobile communication frequency range printed monopole antenna, including metal floor 1, medium substrate 2 with
And it is printed on the radiating element on medium substrate 2, radiating element includes interconnected T shaped microstrip beta radiation unit 3 and tapered
Microstrip line radiating element 4, wherein T-type microstrip line radiating element 3 is connected with tapered microstrip line radiating element 4；Medium substrate 2, T
Shaped microstrip beta radiation unit 3 and tapered microstrip line radiating element 4 constitute flat plane antenna, which passes through feed microstrip line line
5 are vertically fixed on the upper of metal floor 1.Electric wave signal feed-in source of the feed microstrip line line 5 as antenna, one end is connected in plane day
Line, the other end are connected with metal floor 1.The dielectric constant of medium substrate 2 is 4.4, and metal floor 1 is rectangular metal plate.Micro-strip
Line feed line 5 is length 14mm, width 2mm；The length of medium substrate 2 is 65-75 millimeters, and width is 55-65 millimeters, with a thickness of
1.4-1.8 millimeter.
The length of metal floor 1 is 200-400 millimeters, and width is 200-400 millimeters.
T shaped microstrip beta radiation unit 3 includes connected horizontal rectangular antenna element and vertical squaerial unit, wherein
The length W of horizontal rectangular antenna element is 45-50 millimeters, and width LS is 10-14 millimeters, the length L of vertical squaerial unit
It is 65-75 millimeters, width WS is 15-19 millimeters.Wherein, vertical squaerial unit is located at the midpoint of horizontal rectangular antenna element
Place.
Tapered microstrip line radiating element 4 is symmetrically arranged concave-shaped structure, is divided into two one side of something by middle line, this is recessed
One side of something of character form structure include horizontal ZA arranged in parallel while and when ZB, vertical ZC arranged in parallel while and when ZD,
Wherein, ZB is connected when passing through ZE with the side ZD, and ZA is when passing sequentially through ZF, ZG is connected while with ZD, wherein the length on the side ZA is
8-12 millimeters, the length on the side ZB is 6-8 millimeters, and the length on the side ZC is 1.5 to 3.5 millimeters, and the length on the side ZD is 20-30 millimeters,
The length on the side ZE is 20-30 millimeters, and the length on the side ZF is 25-35 millimeters, and the length on the side ZG is 10-20 millimeters.Wherein, the side ZF with
Angle ∠ C=109 °, ZB side of angle ∠ B=133 °, ZD of angle the ∠ A=65.4 °, ZG on the side ZG while with ZD while with ZE
With the angle ∠ E=160 ° of angle the ∠ D=70 °, ZC on the side ZE while with ZF.
A kind of mobile communication frequency range printed monopole antenna, bandwidth 824M-960MHz, 1.7G-2.7GHz and 3.4G-
3.6GHz.This antenna realizes broadband character, can be applicable to the communications bands such as GSM, LTE and 5G, has a wide range of application.
As shown in connection with fig. 3, this mobile communication frequency range printed monopole antenna is imitated with electromagnetic simulation software HFSS
True experiment.Experiment reflection coefficient S11 characteristic, S11 < -10dB between 824-960MHz, 1.7-2.7GGHz and 3.4-3.6GHz,
Broadband character is realized, supports mobile communication frequency range.
In conjunction with shown in Fig. 4-9, with electromagnetic simulation software HFSS to this Novel movable communications band printed monopole antenna
Carry out emulation experiment.Give radiation pattern.Fig. 4-9 is shown in three frequency points (900MHz, 2.2GHz, 3.5GHz)
Place, emulation normalized radiation pattern of the antenna on the face E and the face H.As seen from the figure, the face H of antenna is in 900MHz and 2.2GHz two
There can be good omni-directional at frequency point, meet the omnidirectional radiation requirement of car antenna, be tilted at 3.5GHz to the direction x.
Also, because of the asymmetry of antenna, the face the E directional diagram of antenna is tilted with increasing for frequency to the direction-x.At 0.9GHz, day
Line directional diagram on the face E is approximately the figure of eight, similar to half-wave dipole antenna, but due to floor reflection, antenna
Main radiation direction is being not proper 90 degree, but at 45 degree.At 2.2GHz, antenna E surface radiation directional diagram
There is acclivitous trend, but the measurement direction figure compared to 0.9GHz, main radiation direction is more tilted to 90 degree.3.5GHz
Place, the obvious minor lobe of E surface radiation directional diagram of antenna measurement increase, main lobe enhancing, therefore antenna is in the ratio of gains low frequency of high frequency treatment
Gain it is big.
Claims (6)
1. a kind of mobile communication frequency range printed monopole antenna, it is characterised in that: including metal floor (1), medium substrate (2) with
And it is printed on the radiating element on medium substrate (2), the radiating element includes interconnected T shaped microstrip beta radiation unit
(3) and tapered microstrip line radiating element (4), the medium substrate (2), T shaped microstrip beta radiation unit (3) and tapered microstrip line
Radiating element (4) constitutes flat plane antenna, which is vertically fixed on metal floor (1) by feed microstrip line line (5)
On；Electric wave signal feed-in source of the feed microstrip line line (5) as antenna, one end are connected in flat plane antenna, the other end and gold
Possession plate (1) is connected.
2. a kind of mobile communication frequency range printed monopole antenna according to claim 1, it is characterised in that: the medium
The dielectric constant of substrate (2) is 4.4, and the metal floor (1) is rectangular metal plate.
3. a kind of mobile communication frequency range printed monopole antenna according to claim 1, it is characterised in that: the micro-strip
Line feed line (5) is length 14mm, width 2mm；The length of the medium substrate (2) is 65-75 millimeters, width 55-65
Millimeter, with a thickness of 1.4-1.8 millimeters.
4. a kind of mobile communication frequency range printed monopole antenna according to claim 1, it is characterised in that: the metal
The length on floor (1) is 200-400 millimeters, and width is 200-400 millimeters.
5. a kind of mobile communication frequency range printed monopole antenna according to claim 1, it is characterised in that: the T shape
Microstrip line radiating element (3) includes connected horizontal rectangular antenna element and vertical squaerial unit, wherein horizontal rectangular day
The length W of line unit is 45-50 millimeters, and width LS is 10-14 millimeters, and the length L of vertical squaerial unit is 65-75 milli
Rice, width WS are 15-19 millimeters；Wherein, vertical squaerial unit is located at the midpoint of horizontal rectangular antenna element.
6. a kind of mobile communication frequency range printed monopole antenna according to claim 1, it is characterised in that: described is tapered
Microstrip line radiating element (4) is symmetrically arranged concave-shaped structure, is divided into two one side of something by middle line, which includes level
ZA arranged in parallel while and when ZB, vertical ZC arranged in parallel while and when ZD, wherein ZB when passing through ZE with the side ZD
It is connected, ZA is when passing sequentially through ZF, ZG is connected while with ZD, wherein the length on the side ZA is 8-12 millimeters, and the length on the side ZB is 6-
8 millimeters, the length on the side ZC is 1.5 to 3.5 millimeters, and the length on the side ZD is 20-30 millimeters, and the length on the side ZE is 20-30 millimeters, ZF
The length on side is 25-35 millimeters, and the length on the side ZG is 10-20 millimeters；Wherein, angle ∠ A=65.4 °, ZG of the ZF while with ZG
Angle ∠ D=70 °, ZC of angle the ∠ C=109 °, ZB of angle ∠ B=133 °, ZD while with ZE while with ZE while with ZD
Angle ∠ E=160 ° while with ZF.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110752440A (en) * | 2019-12-03 | 2020-02-04 | 成都国卫通信技术有限公司 | Miniaturized broadband monopole omnidirectional antenna |
| CN111416199A (en) * | 2020-03-13 | 2020-07-14 | 广东工业大学 | Multi-band vehicle-mounted communication antenna |
| CN112134008A (en) * | 2020-08-27 | 2020-12-25 | 南京信息职业技术学院 | Side-fed deformed octagonal microstrip multi-frequency antenna |
| CN112886232A (en) * | 2019-11-30 | 2021-06-01 | 华为技术有限公司 | Electronic device |
| CN116864958A (en) * | 2023-05-30 | 2023-10-10 | 中煤科工集团武汉设计研究院有限公司 | Colliery is radio wave omnidirectional receiving antenna in pit |
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