KR101140283B1 - Hybrid diversity antenna - Google Patents

Hybrid diversity antenna Download PDF

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Publication number
KR101140283B1
KR101140283B1 KR1020100127738A KR20100127738A KR101140283B1 KR 101140283 B1 KR101140283 B1 KR 101140283B1 KR 1020100127738 A KR1020100127738 A KR 1020100127738A KR 20100127738 A KR20100127738 A KR 20100127738A KR 101140283 B1 KR101140283 B1 KR 101140283B1
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KR
South Korea
Prior art keywords
antenna
antenna element
plurality
hybrid structure
unit
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Application number
KR1020100127738A
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Korean (ko)
Inventor
백석현
Original Assignee
주식회사 이노링크
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Priority to KR1020100127738A priority Critical patent/KR101140283B1/en
Application granted granted Critical
Publication of KR101140283B1 publication Critical patent/KR101140283B1/en

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    • 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
    • H01Q1/243Supports; 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 with built-in antennas
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/44Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46Electric supply lines or communication lines
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/30Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • H01Q5/10Resonant antennas

Abstract

PURPOSE: A hybrid structure diversity antenna is provided to uniformly divide currents into a plurality of antenna device units by reinforcing capacitance between lines through a direct coupling unit between adjacent antenna device units. CONSTITUTION: A first feeding unit(110) is electrically connected to an antenna circuit unit through a main port. A second feeding unit(120) is electrically connected to the antenna circuit unit through a diversity port. A first antenna device unit(130) is physically connected to the first feeding unit. A second antenna device unit(140) is physically connected to the second feeding unit. A first ground unit(150) is branched from the first feeding unit.

Description

Hybrid structure diversity antenna {HYBRID DIVERSITY ANTENNA}

Embodiments of the present invention relate to antennas, and more particularly to a hybrid structure diversity antenna.

Due to the rapid spread of mobile communication systems and wireless data communication systems and the mixing of various existing wireless broadcasting and wireless technologies, the demand for wireless means capable of operating in various frequency bands is increasing rapidly. Their demand for miniaturization is also skyrocketing.

In particular, as the interest in digital convergence has increased rapidly, the taste of users who want to purchase a single product to satisfy various needs is not only generalized, but also uses a large amount of resources using basic communication in any mobile device. Or the need to ensure communication connectivity is also becoming common. This is in line with the trend toward a ubiquitous environment where any device can access the network anytime, anywhere.

In addition, broadband and mobile wireless communication methods such as Wimax, 802.11x, or LTE, which have emerged as the next generation communication method, use multiple antennas (MIMO) to simultaneously improve bandwidth range and reliability by using a plurality of antennas to reduce the difference between wired communication and wireless communication. Multidimensional signals such as an input multiple output) and a smart antenna for controlling a desired communication environment using a plurality of antennas are used.

In the next-generation broadband wireless communication method, a plurality of antennas are used to increase the space occupied by the antennas, and it becomes more difficult to design and deploy antennas such as an additional antenna is required for multi-band support by the integration of the multiple communication methods. have.

The integrated arrangement of the plurality of antennas generates interference between the antennas, so that the closer the antennas are, the less the antenna performance can be satisfied due to the coupling problem.

One embodiment of the present invention is a hybrid structure diver, which can distribute current evenly to a plurality of antenna element portions by forming a direct coupling portion through a branch line between adjacent antenna element portions to enhance the capacitance value between the lines. Provides a city antenna.

The problem to be solved by the present invention is not limited to the problem (s) mentioned above, and other object (s) not mentioned will be clearly understood by those skilled in the art from the following description.

A hybrid structure diversity antenna according to an embodiment of the present invention includes a plurality of feeders receiving power; A plurality of antenna element units connected to each of the feed units; A plurality of ground parts connected to each of the feeding part and the antenna element part to ground each of the antenna element parts; A connection line part connecting each of the power feeding parts to bypass and match currents induced by the plurality of antenna element parts; And a direct coupling unit which connects each of the antenna element units to each other through a branch line and evenly distributes the power supplied through each of the feed units.

The plurality of feeders may be formed in a vertical direction based on the connection line part and the direct coupling part.

The plurality of feeders may have a structure having a distance within a quarter wavelength of the highest resonance frequency supported by the plurality of antenna elements.

The plurality of antenna element parts may be formed to be inclined downward with respect to the connection line part and the direct coupling part.

The plurality of antenna element portions may be formed to be bent at least three times.

The plurality of antenna element unit Diversity antenna element unit for operating as a MIMO antenna; And a main antenna element unit operating in a frequency band different from that of the diversity antenna element unit.

The plurality of antenna element portions may have mutual geometric symmetry but different lengths.

The plurality of antenna element parts may have different line widths.

The direct coupling unit may enhance capacitance between lines through branch lines of any geometric shape including any one of a straight line, a curved line, and an uneven structure.

The plurality of antenna elements may support at least two bands of Wi-Max, LTE, Wibro, or Wi-Fi and mobile.

The hybrid structure diversity antenna according to an embodiment of the present invention further includes first to third matching bars for tuning and improving performance of the hybrid structure diversity antenna, and the first and second matching bars are connected to the connection line. The third matching bar may be formed to extend from the portion, and the third matching bar may be formed to be bent at least once by extending from the direct coupling portion.

Specific details of other embodiments are included in the detailed description and the accompanying drawings.

Advantages and / or features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

According to an embodiment of the present invention, a direct coupling portion is formed between branch antenna elements disposed adjacent to each other through branch lines to thereby reinforce capacitance values between lines, thereby evenly distributing current to the plurality of antenna elements.

Therefore, the hybrid antenna according to the embodiment of the present invention has better gain performance and isolation performance, lower cost, and shorter development period and cost than the conventional antenna. For multi-antenna applications, it is possible to provide favorable conditions for the development of characteristics.

1 is a perspective view of a hybrid structure diversity antenna according to an embodiment of the present invention.
2 is a plan view of a hybrid structure diversity antenna according to an embodiment of the present invention.
3 is a view for explaining the principle of a hybrid diversity circuit structure applied to a hybrid structure diversity antenna according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a quadrature hybrid coupler illustrated to explain the hybrid principle.
5 and 6 are diagrams for explaining the electric / magnetic field power transfer phenomenon between the two lines.
7 and 8 are data showing operation characteristics of the main antenna and the diversity antenna of the conventional antenna, respectively.
9 and 10 are data illustrating operation characteristics of a main antenna and a diversity antenna of a hybrid structure diversity antenna according to an embodiment of the present invention.
11 is data showing overall operation characteristics of an existing antenna.
12 is data showing overall operating characteristics of a hybrid structure diversity antenna according to an embodiment of the present invention.
13 is a perspective view of a hybrid structure diversity antenna according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention;

1 is a perspective view of a hybrid structure diversity antenna according to an embodiment of the present invention, and FIG. 2 is a plan view of a hybrid structure diversity antenna according to an embodiment of the present invention.

1 and 2, the hybrid structure diversity antenna 100 according to an embodiment of the present invention may include the first and second feed units 110 and 120, and the first and second antenna element units 130, respectively. 140, first and second ground parts 150 and 160, a connection line part 170, and a direct coupling part 180.

The first feed unit 110 is electrically connected to an antenna circuit unit (not shown) through a main port. The first feeder 110 is one of the feed points for receiving power, and may receive power from the antenna circuit unit through the main port. The first feed part 110 may be formed in a vertical direction with respect to the connection line part 170 and the direct coupling part 180.

The second feed part 120 is electrically connected to the antenna circuit part through a diversity port. The second feeder 120 is one of the feed points for receiving power, similar to the first feeder 110, and may receive power from the antenna circuit unit through the diversity port.

The second feed part 120 may be formed in a vertical direction based on the connection line part 170 and the direct coupling part 180. That is, the second feeder 120 may be formed in the same direction (vertical direction) as the first feeder 110.

The first and second feed parts 110 and 120 are formed to be spaced apart by a predetermined distance. For example, the first and second feed parts 110 and 120 may be a distance within a quarter wavelength length of the highest or desired resonance frequency supported by the first and second antenna element parts 130 and 140. It may be formed in a structure having.

The first antenna element 130 is physically connected to the first feed part 110. That is, the first antenna element 130 may extend in the vertical direction from the first feed part 110.

In this case, the first antenna element 130 may be formed to be inclined downward with respect to the connection line unit 170 and the direct coupling unit 180. In addition, the first antenna element 130 may be formed to be bent at least three times.

The first antenna element unit 130 may be formed to have a geometric symmetry with the second antenna element unit 140, and may have a length and / or a line width different from that of the second antenna element unit 140. .

The first antenna element 130 may receive power from the first feeder 110 to operate as a main antenna element. That is, the first antenna element unit 130 may operate in a frequency band different from that of the diversity antenna element unit (the second antenna element unit 140) operating as a multiple input multiple output (MIMO) antenna.

The first antenna element 130 may use any communication frequency, and in particular, at least two of Wi-Max, LTE, Wibro, or Wi-Fi and mobile. Can support the band.

The second antenna element unit 140 is physically connected to the second feed unit 120. That is, the second antenna element 140 may be formed to extend in the vertical direction from the second feeder 120.

In this case, the second antenna element unit 140 may be formed to be inclined downward with respect to the connection line unit 170 and the direct coupling unit 180. In addition, the second antenna element 140 may be formed to be bent at least three times.

That is, the second antenna element unit 140 differs only in a direction directed from the first antenna element unit 130, and the rest of the structure or shape thereof is substantially the same.

The second antenna element unit 140 may be formed to have a geometric symmetry with the first antenna element unit 130, and may have a length and / or a line width different from that of the second antenna element unit 140. .

The second antenna element unit 140 may operate as a diversity antenna element unit that receives power from the first feeder unit 120 and operates as a MIMO antenna. The second antenna element 140 may use any communication frequency, and in particular, at least two of Wi-Max, LTE, Wibro, or Wi-Fi and mobile devices. Can support the band.

The first ground part 150 is branched from the first feed part 110. The first ground part 150 serves to ground the first antenna element part 130.

The second ground part 160 is formed in connection with the second antenna element part 140. The second ground unit 160 serves to ground the second antenna element unit 140.

The connection line unit 170 connects between the first feed unit 110 and the second feed unit 120 so that currents induced by the adjacent first and second antenna element units 130 and 140 may be induced. Bypass it to match.

As a result, the connection line unit 170 may improve the isolation between the adjacent first and second antenna element units 130 and 140, and through this, even if a plurality of antennas are densely arranged in a narrow space, each antenna It can prevent the performance deterioration.

The connection line unit 170 may be variously formed in any geometric form including a straight line, a curve, an uneven structure, and the like, and may be arranged to represent a predetermined isolation bandwidth and an impedance bandwidth.

The direct coupling unit 180 is formed by connecting the first and second antenna element units 130 and 140 to each other through a branch line. The direct coupling unit 180 evenly distributes the current supplied through the first and second feed units 110 and 120 to the first and second antenna element units 130 and 140.

The direct coupling unit 180 may be formed in various shapes through branch lines of any geometric shape including straight lines, curved lines, and uneven structures. The direct coupling unit 180 may evenly distribute current to the first and second antenna element units 130 and 140 by reinforcing capacitance values between lines through the branch lines of various types.

Therefore, according to an embodiment of the present invention, the gain and isolation performance is superior to the existing antenna, the price is low, and the development period and the cost can be shortened, and the multi-antenna is applied. Conditions favorable to property development can be provided.

3 is a view for explaining the principle of a hybrid structure diversity circuit structure applied to a hybrid structure diversity antenna according to an embodiment of the present invention.

As shown in FIG. 3, the hybrid structure diversity circuit 300 applied to the hybrid structure diversity antenna according to an embodiment of the present invention adjusts the length of each point 1 to 5 to equalize antenna power. I can adjust it. That is, the hybrid structure diversity circuit 300 has a structure capable of tuning the antenna by expanding a branch line corresponding to each point 1 to 5.

In particular, the branch line corresponding to the point (1) implements direct coupling by directly connecting adjacent antennas, thereby increasing capacitance between lines, thereby inducing stronger coupling. To help.

FIG. 4 is a diagram illustrating a quadrature hybrid coupler illustrated to explain the hybrid principle.

As shown in FIG. 4, the quadrature hybrid coupler 400 is a representative transmission line (Microstrip / stripline) coupler using direct coupling through branch lines, and is a useful coupler having a wide range of applications.

Here, the two outputs (Output1, Output2) are each half of the power, that is, a function of equally distributing the input (Input1, Input2) power as a -3dB coupler, two equal output signals have a phase difference of 90 degrees .

The quadrature hybrid coupler 400 is commonly referred to as a hybrid coupler, a 3 dB quadrature coupler, or a branch line coupler. The quadrature hybrid coupler 400 may also be configured as a lattice type multistage coupler to increase the bandwidth.

The quadrature hybrid coupler 400 is used for path separation of a balanced amplifier and other power dividers, and since it is a symmetrical structure, the quadrature hybrid coupler 400 can be used as a combiner as it is. It is possible.

However, when a large amount of power is coupled and used for dividers, simply disconnected line lengths and intervals may not allow a large amount of power coupling to a desired level. Thus, in the case of a coupler used for a power divider, a branch line is directly connected between the lines where the coupling occurs to induce a stronger coupling. This is called direct coupling.

In one embodiment of the present invention, by using the direct coupling to increase the capacitance value between the spaced apart lines to induce stronger coupling, it is possible to distribute the current evenly to the adjacent antennas.

5 and 6 are diagrams for explaining the electric / magnetic field power transfer phenomenon between the two lines.

The fundamental reason why the concept of capacitance is introduced when describing coupling is that it is often easier to understand using the concept of capacitance, because the 'line is often spaced apart'. More fundamentally, the concept of coupling is a general concept of electric / magnetic power transfer between two lines as shown in FIGS. 5 and 6, which may include direct signal transmission using a line. It is also meaningful.

In other words, the situation in which power is transferred between two independent separate lines is that the coupler differs only in the way of the coupler, whether it is connected to the line in the middle, or the power is crossed, spatially. Therefore, as shown in FIG. 6, when direct coupling is used through the branch line 610 formed between two lines, it can be seen that the capacitance value between the lines spaced apart can be further strengthened.

In one embodiment of the present invention, by using the direct coupling method to further strengthen the capacitance value between adjacent antennas, it is possible to induce stronger coupling to distribute the current evenly to each antenna.

7 and 8 are data showing operation characteristics of the main antenna and the diversity antenna of the conventional antenna, respectively, and FIGS. 9 and 10 are the main antenna and the diversity antenna of the hybrid structure diversity antenna according to an embodiment of the present invention. This data shows the operating characteristics of.

As shown in FIG. 7 to FIG. 10, it can be seen that the hybrid antenna diversity antenna according to the embodiment of the present invention has improved operation characteristics in the main antenna and the diversity antenna compared to the conventional antenna.

That is, the hybrid structure diversity antenna according to the embodiment of the present invention has improved gain performance and isolation performance compared to the existing antenna, and it can be seen that it has a favorable condition for characteristics development when applied to a multi-antenna.

FIG. 11 is a diagram illustrating overall operating characteristics of an existing antenna, and FIG. 12 is data illustrating overall operating characteristics of a hybrid structure diversity antenna according to an embodiment of the present invention.

As shown in FIGS. 11 and 12, a conventional normal antenna has an isolation characteristic of about -12 to -11 dB for a frequency ranging from 2.5 to 2.7 GHz, and according to an embodiment of the present invention. Hybrid architecture diversity antennas exhibited isolation of -19 to -11 dB for frequencies ranging from 2.0 to 2.7 GHz. Through this, it can be seen that the hybrid structure diversity antenna according to the embodiment of the present invention exhibits high isolation characteristics.

13 is a perspective view of a hybrid structure diversity antenna according to another embodiment of the present invention.

Referring to FIG. 13, the hybrid structure diversity antenna 1300 according to another embodiment of the present invention is substantially the same in configuration and operation as the hybrid structure diversity antenna 100 of FIGS. 1 and 2. Therefore, only the first to third matching bars 1310, 1320, and 1330 that are different from the hybrid structure diversity antenna 100 of FIGS. 1 and 2 will be described in the present embodiment.

The first to third matching bars 1310, 1320, and 1330 perform functions for tuning and improving performance of the hybrid structure diversity antenna 1300. Here, the first and second matching bars 1310 and 1320 may be formed to extend from the connection line unit 170. The third matching bar 1330 may extend from the direct coupling unit 180. In this case, the third matching bar 1330 may be formed to be bent at least once.

In the illustrated embodiment, the first matching bar 1310 and the second matching bar 1320 have the same line width and length, but the line width and length of each matching bar may be changed according to the characteristics of the individual antennas.

In addition, although the first matching bar 1310 and the second matching bar 1320 are formed at positions symmetrical with respect to the third matching bar 1330 in the illustrated embodiment, the formation position and the number of matching bars are also individual antennas. It is not limited to the form shown that can be changed according to the characteristics of the.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

100: hybrid diversity antenna
110: first feed part
120: second feeder
130: first antenna element
140: second antenna element
150: first ground portion
160: second ground portion
170: connecting line part
180: direct coupling part
1310: first matching bar
1320: second matching bar
1330: third matching bar

Claims (11)

  1. A plurality of feeders receiving electric power;
    A plurality of antenna element units connected to each of the feed units;
    A plurality of ground parts connected to each of the feeding part and the antenna element part to ground each of the antenna element parts;
    A connection line part connecting each of the power feeding parts to bypass and match currents induced by the plurality of antenna element parts; And
    A direct coupling unit which connects each of the antenna element units to each other through a branch line and evenly distributes the power supplied through each of the feed units to the antenna element unit.
    Including,
    The plurality of antenna element parts
    A diversity antenna element unit operating as a MIMO antenna; And
    A main antenna element unit operating in a frequency band different from that of the diversity antenna element unit
    Hybrid structure diversity antenna comprising a.
  2. The method of claim 1,
    The plurality of feed parts
    Hybrid structure diversity antenna, characterized in that formed in the vertical direction with respect to the connection line portion and the direct coupling portion.
  3. The method of claim 1,
    The plurality of feed parts
    And a structure having a distance within a quarter wavelength length of the highest resonant frequency supported by the plurality of antenna elements.
  4. The method of claim 1,
    The plurality of antenna element parts
    Hybrid structure diversity antenna, characterized in that formed inclined downward, based on the connection line portion and the direct coupling portion.
  5. The method of claim 1,
    The plurality of antenna element parts
    Hybrid structure diversity antenna, characterized in that formed at least bent three times.
  6. delete
  7. The method of claim 1,
    The plurality of antenna element parts
    Hybrid diversity diversity antenna having mutual geometric symmetry but different lengths.
  8. The method of claim 1,
    The plurality of antenna element parts
    Hybrid structure diversity antenna, characterized by having a different line width.
  9. The method of claim 1,
    The direct coupling part
    A hybrid structure diversity antenna, characterized by strengthening capacitance values between lines through branch lines of any geometry including straight, curved or uneven structures.
  10. The method of claim 1,
    The plurality of antenna element parts
    A hybrid structure diversity antenna, characterized in that it supports at least two bands of Wi-Max, LTE, Wibro, or Wi-Fi and mobile.
  11. The method of claim 1,
    First to third matching bars for tuning and performance improvement of the hybrid structure diversity antenna
    Further comprising:
    The first and second matching bar is formed extending from the connecting line portion,
    And the third matching bar is formed to be bent at least once by extending from the direct coupling part.
KR1020100127738A 2010-12-14 2010-12-14 Hybrid diversity antenna KR101140283B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101927954B1 (en) * 2017-07-19 2018-12-13 주식회사 이엠따블유 Beamforming antenna

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080028613A (en) * 2006-09-27 2008-04-01 엘지전자 주식회사 Internal antenna apparatus for multi-in multi-out and diversity function
KR20080071991A (en) * 2005-11-24 2008-08-05 톰슨 라이센싱 Antenna arrays with dual circular polarization
KR20100064008A (en) * 2008-12-04 2010-06-14 (주)가람솔루션 Mimo/diversity internal antenna system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080071991A (en) * 2005-11-24 2008-08-05 톰슨 라이센싱 Antenna arrays with dual circular polarization
KR20080028613A (en) * 2006-09-27 2008-04-01 엘지전자 주식회사 Internal antenna apparatus for multi-in multi-out and diversity function
KR20100064008A (en) * 2008-12-04 2010-06-14 (주)가람솔루션 Mimo/diversity internal antenna system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101927954B1 (en) * 2017-07-19 2018-12-13 주식회사 이엠따블유 Beamforming antenna
WO2019017661A1 (en) * 2017-07-19 2019-01-24 주식회사 이엠따블유 Beam-forming antenna

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