KR20030030845A - Antenna - Google Patents

Antenna Download PDF

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Publication number
KR20030030845A
KR20030030845A KR1020020044923A KR20020044923A KR20030030845A KR 20030030845 A KR20030030845 A KR 20030030845A KR 1020020044923 A KR1020020044923 A KR 1020020044923A KR 20020044923 A KR20020044923 A KR 20020044923A KR 20030030845 A KR20030030845 A KR 20030030845A
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South Korea
Prior art keywords
antenna
inverted
ground plate
radiating element
forming
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KR1020020044923A
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Korean (ko)
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KR100651375B1 (en
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오타니노리히사
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삼성전자주식회사
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; 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
    • H01Q1/243—Supports; 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
    • 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
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H01Q5/364—Creating multiple current paths
    • H01Q5/371—Branching current paths

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)

Abstract

PURPOSE: An antenna is provided to control simply resonant frequency by using antenna radiation elements for forming an inverted F antenna and an inverted L antenna. CONSTITUTION: An antenna is formed with a two-layered structure of the first antenna radiation element(1) and the second antenna radiation element(3). The first antenna radiation element(1) is formed with an inverted F antenna. The second antenna radiation element(3) is formed with an inverted L antenna. The second antenna radiation element(3) is formed at a ground plate(2) of the first antenna radiation element(1). A feeder terminal(4) is connected to the first and the second antenna radiation elements(1,3). One end of the first antenna radiation element(1) is connected to the ground plate(2) through a ground terminal(5).

Description

안테나{ANTENNA}ANTENNA {ANTENNA}

본 발명은 휴대전화기에 관한 것으로, 특히 휴대전화기에 내장되는 안테나에 관한 것이다.TECHNICAL FIELD The present invention relates to a mobile phone, and more particularly, to an antenna embedded in a mobile phone.

종래의 휴대전화기에 내장되는 안테나로는, 역F형 안테나가 널리 사용되어 왔다. 그러나, 최근, 휴대전화기의 소형화 및 다기능화 등에 따라서, 안테나가 차지할 수 있는 공간이 좁아지고, 안테나의 소형화 경향이 강해지는 한편으로, 광대역의 안테나가 요구되어 왔다.As an antenna incorporated in a conventional cellular phone, an inverted-F antenna has been widely used. However, in recent years, with the miniaturization, multifunctionality, and the like of mobile telephones, the space occupied by the antenna is narrowed, the tendency of the miniaturization of the antenna is intensified, and a wideband antenna has been demanded.

상기와 같은 두 가지의 요구에 따른 소형이면서 광대역인 안테나로서, 도 4에 도시된 바와 같은, 역F형 안테나의 소자 101에 근접하여 무급전 소자 103을 배치한 타입의 안테나가 이용되어 왔다. 상기와 같은 타입의 안테나에 있어서, 역F형 안테나의 소자 101은, 급전단자 104로부터 직접 급전이 되고, 무급전 소자 103은, 전자계결합에 의해 역F형 안테나의 소자 101로부터 급전된다. 그리고, 역F형 안테나의 소자 101의 공진 주파수와, 무급전 소자 103의 공진 주파수를 약간 다르게 해 둠으로써, 주파수 대역을 넓히고 있다.As a small and wideband antenna according to the above two requirements, an antenna of the type in which the non-powered element 103 is disposed close to the element 101 of the inverted-F antenna as shown in FIG. 4 has been used. In the antenna of the above type, the element 101 of the inverted-F antenna is fed directly from the feed terminal 104, and the non-powered element 103 is fed from the element 101 of the inverted-F antenna by electromagnetic field coupling. The frequency band is widened by varying the resonance frequency of the element 101 of the inverted-F antenna and the resonance frequency of the non-powered element 103 slightly.

그러나, 상기와 같은 타입의 안테나에는, 무급전 소자 103 및 역F형 안테나의 소자 101의 공진 주파수의 조정이 어렵다는 문제가 있다. 무급전 소자 103 및 역F형 안테나의 소자 101의 공진 주파수는, 역F형 안테나의 소자 101과 무급전 소자 103과의 전자계 결합량의 영향을 받는다. 전자계 결합량은, 역F형 안테나의 소자 101과 무급전 소자 103의 간격, 양 소자의 사이에 배치된 유전체의 유전율, 양 소자의 치수(길이 및 폭) 등에 의해 결정된다. 따라서, 무급전 소자 103 및 역F형 안테나의 소자 101의 공진 주파수로서 원하는 값을 얻기 위해서는, 상기의 간격, 유전율, 치수 등 모든 것을 정확하게 정해야만 한다.However, such an antenna has a problem that it is difficult to adjust the resonance frequencies of the non-powered element 103 and the element 101 of the inverted-F antenna. The resonance frequency of the non-powered element 103 and the element 101 of the inverted-F antenna is influenced by the electromagnetic field coupling amount between the element 101 of the inverted-F antenna and the non-powered element 103. The electromagnetic coupling amount is determined by the distance between the element 101 and the non-powered element 103 of the inverted-F antenna, the dielectric constant of the dielectric disposed between the two elements, the dimensions (length and width) of the two elements, and the like. Therefore, in order to obtain a desired value as the resonant frequency of the non-powered element 103 and the element 101 of the inverted-F antenna, all of the above intervals, dielectric constants, dimensions, and the like must be accurately determined.

따라서 본 발명의 목적은 상기와 같은 문제점을 해결하기 위한 것으로, 소형이고 광대역이면서, 공진 주파수의 조정이 간단한 안테나를 제공하는 것이다.Accordingly, an object of the present invention is to solve the above problems, and to provide an antenna which is small in size and wideband and whose adjustment of resonance frequency is simple.

상기한 목적을 달성하기 위해 본 발명은 휴대전화기의 안테나에 있어서, 역F형 안테나를 형성하는 안테나 방사 소자와, 역L형 안테나를 형성하는 안테나 방사 소자를 구비하며, 상기 방사소자들이 2층으로 배치되어 구성됨을 특징으로 한다.In order to achieve the above object, the present invention provides an antenna of a mobile phone, comprising an antenna radiating element forming an inverted-F antenna and an antenna radiating element forming an inverting L-type antenna, wherein the radiating elements are formed in two layers. Characterized in that arranged.

도 1은 본 발명의 일 실시예에 따른 안테나의 개략적인 구성을 도시한 도면,1 is a view showing a schematic configuration of an antenna according to an embodiment of the present invention;

도 2는 본 발명의 일 실시예에 따라 안테나가 듀얼밴드 휴대전화기에 내장된 경우를 도시한 도면,2 is a diagram illustrating a case in which an antenna is embedded in a dual band mobile phone according to one embodiment of the present invention;

도 3은 본 발명의 다른 실시예에 따라 접지판(GND판) 2에서 먼 쪽에 역L형 안테나의 소자 3을 배치하고, 접지판(GND판) 2에 가까운 쪽에 역F형 안테나의 소자 1을 배치한 예를 도시한 도면,3 shows device 3 of the inverted L-type antenna on the side away from the ground plate (GND plate) 2, and device 1 of the inverted-F antenna on the side close to the ground plate (GND plate) 2 according to another embodiment of the present invention. Drawing showing an example of placement,

도 4는 종래의 안테나의 개략적인 구성을 도시한 도면.4 is a diagram showing a schematic configuration of a conventional antenna;

〈부호의 설명〉<Explanation of sign>

1 소자(역F형 안테나)1 element (inverted F antenna)

2 접지판(GND판)2 Ground plate (GND plate)

3 소자(역L형 안테나)3 elements (inverted L type antenna)

4 급전단자4 feed terminals

5 접지단자(GND단자)5 Ground terminal (GND terminal)

6 화살표6 arrows

7 화살표7 arrows

이하 본 발명의 바람직한 실시예의 상세한 설명이 첨부된 도면들을 참조하여 설명될 것이다. 도면들 중 참조번호들 및 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 참조번호들 및 부호들로 나타내고 있음에 유의해야 한다. 하기에서 본 발명을 설명함에 있어, 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다.DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

도 1은, 본 발명의 일 실시예에 의한 안테나의 개략적인 구성을 도시한 도면이다. 상기 안테나는, 안테나 방사소자가 2층 구조를 하고 있다. 즉, 역F형 안테나의 소자 1의 하부 즉 접지판(GND판) 2가 있는 쪽에 역L형 안테나의 소자 3이 설치되어 있다. 양 소자 1, 3으로는, 공통의 급전단자 4로부터 직접 급전이 된다. 역F형 안테나의 소자 1의 일단은, 접지단자(GND단자) 5에 의해 접지판(GND판) 2와 접속되어 있다. 역F형 안테나의 소자 1의 공진 주파수와, 역L형 안테나의 소자 3의 공진 주파수가 약간 다르도록, 양 소자 1, 3의 길이가 정해져 있다. 이에 의해, 넓은 공진 주파수 대역이 확보된다. 동시에, 양 소자 1, 3으로는, 급전단자 4로부터 직접 급전하여, 강제적으로 구동하기 때문에, 양 소자 1, 3의 공진 주파수가, 양 소자 1, 3간의 간격 등의 영향을 쉽게 받지 않는다. 따라서, 전자계 결합에 의한 급전에 비하여 공진 주파수의 조정이 간단해 진다.1 is a view showing a schematic configuration of an antenna according to an embodiment of the present invention. In the antenna, the antenna radiating element has a two-layer structure. That is, the element 3 of the inverted L-type antenna is provided below the element 1 of the inverted-F antenna, that is, the ground plate (GND plate) 2. With both elements 1 and 3, power is fed directly from the common feed terminal 4. One end of the element 1 of the inverted-F antenna is connected to the ground plate (GND plate) 2 by the ground terminal (GND terminal) 5. The lengths of both elements 1 and 3 are determined so that the resonance frequency of element 1 of the inverted F antenna and the resonance frequency of element 3 of the inverted L antenna are slightly different. This ensures a wide resonance frequency band. At the same time, since both devices 1 and 3 are powered directly from the power supply terminal 4 and are forcibly driven, the resonance frequencies of the devices 1 and 3 are not easily affected by the distance between the devices 1 and 3 and the like. Therefore, the adjustment of the resonance frequency becomes simpler than the feeding by electromagnetic field coupling.

도 2는, 본 실시예에 의한 안테나가 듀얼밴드 휴대전화기에 내장된 경우의 응용예를 도시한 도면이다. 안테나 방사소자는, 역F형 안테나의 소자 1과 역L형 안테나의 소자 3의 2층으로 이루어져 있고, GND판 2의 가장자리에 접속된 GND단자 5는, GND판에서 먼 쪽의 안테나 방사소자인 역F형 안테나의 소자 1에만 접속되어 있다. 급전단자 4는, 양쪽의 안테나 방사소자 즉 역F형 안테나의 소자 1 및 역L형 안테나의 소자 3과 접속되어 있다. 두 개의 안테나 방사소자의 사이에 유전체를 배치하는 것도 가능하다. GND단자 5 및 급전단자 4를 GND판 2의 가장자리에 배치함으로써, 이들 GND단자 5 및 급전단자 4로부터 전파가 방사되기 쉬워지고, 상기 안테나의 주파수 대역이 한층 넓어진다.Fig. 2 is a diagram showing an application example when the antenna according to the present embodiment is incorporated in a dual band portable telephone. The antenna radiating element comprises two layers of the element 1 of the inverted F antenna and the element 3 of the inverting L antenna. The GND terminal 5 connected to the edge of the GND plate 2 is an antenna radiating element farther from the GND plate. It is connected only to element 1 of the inverted-F antenna. The power supply terminal 4 is connected to both antenna radiating elements, that is, element 1 of the inverted-F antenna and element 3 of the inverted-L antenna. It is also possible to arrange a dielectric between two antenna radiating elements. By arranging the GND terminal 5 and the feed terminal 4 at the edges of the GND plate 2, radio waves are easily emitted from the GND terminal 5 and the feed terminal 4, and the frequency band of the antenna is further widened.

각 층에는, GSM(900MHz대)와 DCS(1800MHz대)에 대응하는 길이의 소자가 형성되어 있다. 즉, 화살표 6으로 표시한 부분이 DCS(1800MHz대)에 대응하고, 화살표 7로 표시한 부분이 GSM(900MHz대)에 대응하고 있다. 즉, 이들 주파수대에 있어서의 파장을 λ라 하면, 거의 λ/4의 길이의 소자가 형성되어 있다.In each layer, elements of lengths corresponding to GSM (900 MHz band) and DCS (1800 MHz band) are formed. That is, the portion indicated by arrow 6 corresponds to DCS (1800 MHz band), and the portion indicated by arrow 7 corresponds to GSM (900 MHz band). In other words, assuming that the wavelength in these frequency bands is λ, an element having a length of almost λ / 4 is formed.

도 3은, 접지판(GND판) 2에서 먼 쪽에 역L형 안테나 소자 3을 배치하고, 접지판(GND판) 2에 가까운 쪽에 역F형 안테나의 소자 1을 배치한 예를 도시한 도면이다. 상기와 같이 배치하여도, 도 1에 도시된 예와 동일한 효과를 얻을 수 있다.FIG. 3 is a view showing an example in which an inverted L-type antenna element 3 is disposed away from the ground plate (GND plate) 2 and an element 1 of the inverted-F antenna is placed near the ground plate (GND plate) 2. . Even if arrange | positioned as mentioned above, the same effect as the example shown in FIG. 1 can be acquired.

한편 본 발명의 상세한 설명에서는 구체적인 실시 예에 관해 설명하였으나, 본 발명의 범위에서 벗어나지 않는 한도 내에서 여러 가지 변형이 가능함은 물론이다. 그러므로 본 발명의 범위는 설명된 실시 예에 국한되어 정해져서는 아니되며 후술하는 특허청구의 범위뿐만 아니라 이 특허청구의 범위와 균등한 것들에 의해 정해져야 한다.Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but 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 scope of the following claims, but also by those equivalent to the scope of the claims.

본 발명에 의하면, 소형이고 광대역이면서, 공진 주파수의 조정이 간단한 안테나를 얻을 수 있다.According to the present invention, an antenna can be obtained which is small in size and wideband and whose adjustment of the resonance frequency is simple.

또한, 접지단자 및 급전단자를 접지판의 가장자리에 배치함으로써, 이들 접지단자 및 급전단자로부터 전파가 방사되기 쉬워지며, 상기 안테나의 주파수 대역이 한층 넓어진다.Further, by arranging the ground terminal and the feed terminal at the edges of the ground plate, radio waves are easily emitted from these ground terminals and the feed terminal, and the frequency band of the antenna is further widened.

Claims (4)

휴대전화기의 안테나에 있어서,In the antenna of the mobile phone, 역F형 안테나를 형성하는 안테나 방사 소자와,An antenna radiating element forming an inverted-F antenna; 역L형 안테나를 형성하는 안테나 방사 소자를 구비하며,An antenna radiating element forming an inverted L-shaped antenna, 상기 방사소자들이 2층으로 배치되어 구성됨을 특징으로 하는 안테나.And the radiating elements are arranged in two layers. 제 1항에 있어서,The method of claim 1, 상기 2층의 안테나 방사소자 중, 접지판에서 먼 쪽에 상기 역F형 안테나를 형성하는 안테나 방사 소자를 배치하고, 접지판에 가까운 쪽에 상기 역L형 안테나를 형성하는 안테나 방사 소자를 배치함을 특징으로 하는 안테나.An antenna radiating element for forming the inverted-F antenna is disposed on the side far from the ground plate among the antenna radiating elements of the second layer, and an antenna radiating element for forming the inverted L-type antenna is arranged on the side near the ground plate. Antenna. 제 1항에 있어서,The method of claim 1, 상기 2층의 안테나 방사소자 중, 접지판에서 먼 쪽에 상기 역L형 안테나를 형성하는 안테나 방사 소자를 배치하고, 접지판에 가까운 쪽에 상기 역F형 안테나를 형성하는 안테나 방사 소자를 배치함을 특징으로 하는 안테나.An antenna radiating element for forming the inverted L-type antenna on a side far from the ground plate, and an antenna radiating element for forming the inverted F-type antenna on a side near the ground plate among the antenna radiating elements on the second floor; Antenna. 제1항에 있어서,The method of claim 1, 상기 역F형 안테나를 형성하는 안테나 방사소자와 접지판을 접속하는 접지단자와, 상기 역F형 안테나를 형성하는 안테나 방사소자 및 역L형 안테나를 형성하는 안테나 방사소자로의 급전을 수행하는 급전단자를, 상기 접지판의 가장자리에 배치함을 특징으로 하는 안테나.A power supply for feeding power to the antenna radiating element forming the inverted F antenna and a ground terminal connecting the ground plate, the antenna radiating element forming the inverted F antenna and the antenna radiating element forming the inverting L antenna And a terminal arranged at an edge of the ground plate.
KR1020020044923A 2001-10-11 2002-07-30 Antenna KR100651375B1 (en)

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