CN105826657B - A kind of ferrite film multiple-input and multiple-output antenna for mobile phone - Google Patents

A kind of ferrite film multiple-input and multiple-output antenna for mobile phone Download PDF

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Publication number
CN105826657B
CN105826657B CN201610334046.6A CN201610334046A CN105826657B CN 105826657 B CN105826657 B CN 105826657B CN 201610334046 A CN201610334046 A CN 201610334046A CN 105826657 B CN105826657 B CN 105826657B
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CN
China
Prior art keywords
antenna
part
substrate
ferrite film
earth plate
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CN201610334046.6A
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Chinese (zh)
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CN105826657A (en
Inventor
周浩淼
徐源
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中国计量大学
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Priority to CN201610334046.6A priority Critical patent/CN105826657B/en
Publication of CN105826657A publication Critical patent/CN105826657A/en
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Publication of CN105826657B publication Critical patent/CN105826657B/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/25Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems

Abstract

The invention discloses a kind of ferrite film multiple-input and multiple-output antenna for mobile phone, it is desirable to provide a kind of plane, whole mimo antenna suitable for ultra-thin smart handset of eight frequency ranges in covering 2G/3G/4G communications.Including substrate, earth plate, first part's antenna, second part antenna, the first ferrite film, the second ferrite film.First part's antenna and second part antenna are located at two of substrate diagonally, are centrosymmetric.Earth plate fits in the bottom surface of substrate.First ferrite film and the second ferrite film are plated in respectively below the corresponding earth plate of first part's antenna and second part antenna.This antenna thickness is minimum, is no better than substrate thickness, is suitable for ultra thin handset, and can cover multiple frequency ranges.And full frequency band isolation is less than 10dB, and isolation characteristic is very excellent.

Description

A kind of ferrite film multiple-input and multiple-output antenna for mobile phone

Technical field

The invention belongs to antenna technical fields, and in particular to a kind of ferrite film multiple-input and multiple-output(MIMO)Mobile phone day Line.

Background technology

Since the eighties in last century is born, mobile communication the sixth of the twelve Earthly Branches passes through to be sent out from the 1G epoch using the low-speed communication of analog system Exhibition by now the 4G epoch use MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) technology height Fast mobile communication is accessed from speech business is only supported to support interactive multimedia, high quality image, 3D animations and broadband internet Etc. business, the development of wireless communication technique significantly improve people’s lives, also change the survival condition of entire society.

As the critical component of wireless communication system, antenna is outlet and the entrance of radio wave, the transmitting of radio wave It is all completed by antenna with receiving.In antenna research field, antenna miniaturization always is the hot spot of research.Another party Face, with advances in technology and upgrading, requirement of the system for antenna is higher and higher, such as mobile communication terminal needs day There is line characteristics, following 4G communicating requirements such as multiband or bandwidth to place mutiple antennas in a mobile terminal and require Higher isolation is kept between antenna.Contradiction makes antenna miniaturization techniques attract as the reduction of size and the raising of performance More and more researchers to bound oneself to it.

In short, MIMO antenna for mobile phone is to later Mobile Communications Market very attractive, and apply practical to mimo antenna Requirement be miniaturization, high isolation, broadband.

Invention content

In order to solve to meet simultaneously miniaturization, high isolation, broadband requirement, the present invention provides a kind of ferrite film is more Input multi output antenna for mobile phone.

Basic scheme of the present invention is as follows:A kind of ferrite film multiple-input and multiple-output antenna for mobile phone, it includes substrate, ground connection Plate, first part's antenna, second part antenna, the first ferrite film, the second ferrite film;First part's antenna and second Some antennas is located at two of substrate diagonally, is centrosymmetric, is leaky antenna(open-slot antenna);It connects Bottom surface of the floor plaster together in substrate;First ferrite film and the second ferrite film are plated in first part's antenna, second respectively Below the corresponding earth plate of some antennas.

First part's antenna includes the first rectangle coupling radiation zone, the first L-type coupling radiation zone, the first feed Point, the first feed strip;First rectangle coupling radiation zone, the first L-type coupling radiation zone are in the clearance zone of a rectangle, and In earth plate is generally aligned in the same plane, i.e. base lower surface, and be connected with earth plate;First L-type couples radiation zone close to substrate Short side, the first rectangle couple the center of the relatively close substrate of radiation zone;First feed strip is located at the upper surface of substrate;First feed Point is through substrate and connects earth plate and the first feed strip;Second part antenna includes the second rectangle coupling radiation zone, the second L-type Couple radiation zone, the second distributing point, the second feed strip;Second part antenna structure is identical with first part's antenna structure.

The material of the substrate is FR4, and earth plate, first part's antenna, the material of second part antenna are good for metal Conductor.

First ferrite film, the second ferrite film is complete respectively to cover first part's antenna and second part The rectangle clearance zone positioned at base lower surface of antenna, and exceed several millimeters of edge;The thickness of ferrite film is micron order.

The beneficial effects of the invention are as follows:There is the present invention wider frequency band to cover all eight in 2G/3G/4G communications Frequency range has smaller size, and since ferrite film only has micron order, so integral thickness is no better than the thickness of substrate Degree is suitable for ultra thin handset instantly less than one millimeter, and in entire frequency band, isolation is both less than -10dB, has reached practicality Standard.And as a kind of mimo antenna, the transmission rate of antenna can be improved.

Description of the drawings

The present invention will be further described below in conjunction with the accompanying drawings;

Fig. 1 is the leftschematic diagram of the present invention;

Fig. 2 is the schematic bottom view of the present invention;

Fig. 3 is the schematical top view of the present invention;

Fig. 4 is the S parameter figure of the present invention;

Description of symbols in figure:Substrate 1, earth plate 2, first part's antenna 3, second part antenna 5, the first ferrite film 4, the second ferrite film 6, the first rectangle coupling radiation zone 31, the first L-type coupling radiation zone 32, the first distributing point 33, first Feed strip 34, the second rectangle coupling radiation zone 51, the second L-type coupling radiation zone 52, the second distributing point 53, the second feed strip 54.

Specific implementation mode

Below by specific embodiment and in conjunction with attached drawing, the present invention is described in further detail.

As shown in Figure 1, a kind of ferrite film multiple-input and multiple-output antenna for mobile phone, it includes substrate 1, earth plate 2, first Some antennas 3, second part antenna 5, the first ferrite film 4, the second ferrite film 6;First part's antenna 3 and second Divided antenna 5 is located at two of substrate 1 diagonally, is centrosymmetric, is leaky antenna(open-slot antenna);Base The size of plate 1 is 140mm × 70mm × 0.6mm;First ferrite film 4 and the second ferrite film 6 are plated in first respectively Divided antenna 3, second part antenna 5 corresponding earth plate 2 below.

As shown in Figure 2,3, first part's antenna 3 includes the first rectangle coupling radiation zone 31, the first L-type coupling radiation zone 32, the first distributing point 33, the first feed strip 34.First rectangle couples radiation zone 31, and the first L-type coupling radiation zone 32 is in one In the clearance zone of a rectangle and in earth plate 2 is generally aligned in the same plane, i.e. 1 lower surface of substrate, and be connected with earth plate 2, clearance zone For 39mm × 15mm, apart from substrate short side 3mm.First L-type couples short side of the radiation zone 31 close to substrate 1, and the first L-type couples spoke It is 6.5mm to penetrate 31 brachyplast of band section, and long minor matters are 35mm, width 1.5mm, the first rectangle coupling 31 relatively close substrate of radiation zone 1 center, away from substrate short side 12mm, size is 39mm × 2mm.First feed strip 34 is located at the upper surface of substrate 1, and length is 21mm;First distributing point 33 is through substrate 1 and connects earth plate 2 and the first feed strip 34.Second part antenna includes the second square Shape couples radiation zone 51, the second L-type coupling radiation zone 52, the second distributing point 53, the second feed strip 54.5 knot of second part antenna Structure is identical with first part's 3 structures of antenna, is only about 1 center of substrate and is centrosymmetric, diagonal in substrate 1.

The material of the substrate 1 be FR4, earth plate 2, first part's antenna 3, second part antenna 5 material be copper, Other metal good conductors can also be selected.

As shown in Fig. 2, first ferrite film 4, the second ferrite film 6 should completely cover first part respectively The rectangle clearance zone positioned at 1 lower surface of substrate of antenna 3 and second part antenna 5;The thickness of ferrite film is 10 microns, greatly Small is 40mm × 15mm, and material is nickel-zinc ferrite.

The present invention has wider frequency band, covers all eight frequency ranges in 2G/3G/4G communications, LTE700 (4G): 698-787MHz,GSM850(2G):824-894MHz,GSM900(2G):880-960MHz,DCS1800(2G):1710- 1880MHz,PCS1900(2G):1850-1990MHz,UMTS2100(3G):1920-2170MHz,LTE2300(4G):2305- 2400MHz, LTE2500(4G):2500-2690MHz.As shown in figure 4, the covering of antenna(S11<- 6dB) 0.642- 1.096GHz and 1.704-2.705GHz has smaller size, and since ferrite film only has micron order, so whole Thickness is no better than the thickness of substrate, less than one millimeter, is suitable for ultra thin handset instantly.As shown in figure 4, in entire frequency band, Isolation(S12)Both less than -10dB has reached practical standard.And as a kind of mimo antenna, the transmission of antenna can be improved Rate.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.

Claims (1)

1. a kind of ferrite film multiple-input and multiple-output antenna for mobile phone, which is characterized in that it includes substrate(1), earth plate(2)、 First part's antenna(3), second part antenna(5), the first ferrite film(4), the second ferrite film(6);First part Antenna(3)With second part antenna(5)It is located at substrate(1)Two it is diagonal, be centrosymmetric, be leaky antenna;It connects Floor(2)Fit in substrate(1)Bottom surface;First ferrite film(4)With the second ferrite film(6)It is plated in first respectively Divided antenna(3), second part antenna(5)Corresponding earth plate(2)Below;
First part's antenna(3)Including the first rectangle couples radiation zone(31), the first L-type couple radiation zone(32), One distributing point(33), the first feed strip(34);First rectangle couples radiation zone(31), the first L-type couple radiation zone(32)Locate In the clearance zone of a rectangle and earth plate(2)In being generally aligned in the same plane, i.e. substrate(1)Lower surface, and and earth plate(2) It is connected;First L-type couples radiation zone(31)Close to substrate(1)Short side, the first rectangle couple radiation zone(31)Relatively close base Plate(1)Center;First feed strip(34)Positioned at substrate(1)Upper surface;First distributing point(33)Through substrate(1)And it connects Earth plate(2)With the first feed strip(34);Second part antenna(5)Including the second rectangle couples radiation zone(51), the second L-type coupling Close radiation zone(52), the second distributing point(53), the second feed strip(54);Second part antenna(5)Structure and first part's antenna (3)Structure is identical;
The substrate(1)Material be FR4, earth plate(2), first part's antenna(3), second part antenna(5)Material For metal good conductor.
CN201610334046.6A 2016-05-19 2016-05-19 A kind of ferrite film multiple-input and multiple-output antenna for mobile phone CN105826657B (en)

Priority Applications (1)

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CN201610334046.6A CN105826657B (en) 2016-05-19 2016-05-19 A kind of ferrite film multiple-input and multiple-output antenna for mobile phone

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CN201610334046.6A CN105826657B (en) 2016-05-19 2016-05-19 A kind of ferrite film multiple-input and multiple-output antenna for mobile phone

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CN105826657B true CN105826657B (en) 2018-08-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202058854U (en) * 2010-12-08 2011-11-30 上海安费诺永亿通讯电子有限公司 MIMO antenna structure realizing multi-frequency high isolation
CN102570030A (en) * 2012-01-18 2012-07-11 华南理工大学 MIMO (multi-input multi-output) antenna improving isolation by use of wideband T-type neutralization line
KR101166089B1 (en) * 2010-10-05 2012-07-23 주식회사 이엠따블유 Multi band mimo antenna
CN104409831A (en) * 2014-11-25 2015-03-11 中国计量学院 Ferrite-based MIMO (multiple input multiple output) terminal antenna
CN205900769U (en) * 2016-05-19 2017-01-18 中国计量大学 Ferrite film multiple -input -multiple -output cell -phone antenna

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101166089B1 (en) * 2010-10-05 2012-07-23 주식회사 이엠따블유 Multi band mimo antenna
CN202058854U (en) * 2010-12-08 2011-11-30 上海安费诺永亿通讯电子有限公司 MIMO antenna structure realizing multi-frequency high isolation
CN102570030A (en) * 2012-01-18 2012-07-11 华南理工大学 MIMO (multi-input multi-output) antenna improving isolation by use of wideband T-type neutralization line
CN104409831A (en) * 2014-11-25 2015-03-11 中国计量学院 Ferrite-based MIMO (multiple input multiple output) terminal antenna
CN205900769U (en) * 2016-05-19 2017-01-18 中国计量大学 Ferrite film multiple -input -multiple -output cell -phone antenna

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