KR940011485B1 - Loop antenna - Google Patents

Loop antenna Download PDF

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Publication number
KR940011485B1
KR940011485B1 KR1019920012494A KR920012494A KR940011485B1 KR 940011485 B1 KR940011485 B1 KR 940011485B1 KR 1019920012494 A KR1019920012494 A KR 1019920012494A KR 920012494 A KR920012494 A KR 920012494A KR 940011485 B1 KR940011485 B1 KR 940011485B1
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South Korea
Prior art keywords
loop
loops
antenna
loop antenna
coaxial line
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KR1019920012494A
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Korean (ko)
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KR940003116A (en
Inventor
손태호
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경창산업주식회사
손일호
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Priority to KR1019920012494A priority Critical patent/KR940011485B1/en
Publication of KR940003116A publication Critical patent/KR940003116A/en
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Publication of KR940011485B1 publication Critical patent/KR940011485B1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

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  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

The device enhances the reception of the radio wave for mobile communication and television broadcasting by improving the directional characteristics of the antenna. The device contains the first and the second triangular or circular type orthogonally arranged loops which are formed on the base plate, conducting wires which are wound around several grooves of the loops, electrically connected coaxial cable between the conducting wire and the power distributor which determines the phase displacement. It can be applied to the automobile or wireless phone.

Description

전방향성 루프 안테나Omni-directional loop antenna

제1도는 본 발명의 일실시예에 따른 안테나를 나타낸 사시도.1 is a perspective view showing an antenna according to an embodiment of the present invention.

제2도는 제1도에 도시된 안테나 루프의 확대단면도.2 is an enlarged cross-sectional view of the antenna loop shown in FIG.

제3도는 본 발명의 다른 실시예에 따른 안테나를 나타낸 사시도.3 is a perspective view showing an antenna according to another embodiment of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 제1루프 1a : 제2루프1: first loop 1a: 2nd loop

2 : 요홈부 3 : 도체선2: groove groove 3: conductor wire

4 : 전력분배기 5 : 동축선4: power divider 5: coaxial line

본 발명은 전방향성 루프안테나에 관한 것으로서, 보다 상세하게는 자동차의 실내에 설치되어 텔레비젼 방송신호등을 어느방향에서도 수신할 수 있는 전방향성 루프안테나에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an omnidirectional loop antenna, and more particularly, to an omnidirectional loop antenna installed in an interior of an automobile and capable of receiving a television broadcast signal in any direction.

일반적으로 사용되는 루프안테나는 작은 크기로 제작이 가능하고, 8자 지향특성을 갖고 있기 때문에 방향 탐지기등의 장비용안테나에 주로 사용되고 있다.The commonly used loop antenna can be manufactured in a small size and has an eight-way orientation characteristic, so it is mainly used for antennas for equipment such as direction detectors.

이러한 루프안테나는 루프에 권회된 권선수로 안테나의 입력임피던스를 조절할 수 있을 뿐만 아니라, 원형루프의 경우에는 반경율, 그리고 사각루프의 경우에는 각변의 길이를 가변할 수 있어 다른 종류의 안테나 보다 크기를 줄일 수 있는 특징을 가지고 있으나, 자체적인 복사특성이 8자 지향인 관계로 루프면 부분으로 도래하는 전파는 수신이 불가능한 관계로 방송수신용 안테나로 사용할 수 없는 문제점이 있었다.These loop antennas can not only adjust the input impedance of the antenna by the number of windings wound in the loop, but also the radius of the circular loop and the length of each side in the case of the square loop. Although it has a feature to reduce, since its own radiation characteristic is oriented in eight characters, the radio wave arriving at the roof surface cannot be used as a broadcast receiving antenna because it cannot receive.

따라서, 본 발명은 상기와 같은 제반결점을 해소하기 위하여 창출한 것으로서, 본 발명의 목적은 텔레비젼 방송과 이동통신기기의 호출신호를 수신하는 전방향상 루프안테나를 제공하는데 있다.Accordingly, an object of the present invention is to provide an omnidirectional loop antenna for receiving call signals from television broadcasts and mobile communication devices.

상기의 목적을 달성하기 위하여 본 발명은, 사각 내지 원형 형상을 가지고 서로 90°방향으로 직교된 제1, 2루프와, 상기 제1, 2루프의 외측면(외주면)에 형성된 다수개의 요홈부에 권회된 도체선과, 상기 도체선과 일정전원을 공급하는 전력분배기 사이에 전기적으로 접속되어 위상변위를 결정하는 동축선으로 구성된 것을 특징으로 한다.In order to achieve the above object, the present invention, the first and second loops having a rectangular to circular shape and orthogonal to each other in a 90 ° direction, and a plurality of grooves formed on the outer surface (outer peripheral surface) of the first and second loops. It is characterized by consisting of a coiled conductor wire and a coaxial line electrically connected between the conductor wire and a power divider for supplying a constant power source to determine a phase shift.

이하, 예시된 도면을 참조하여 본 발명을 더욱 상세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to the illustrated drawings.

제1도는 본 발명의 일실시예에 따른 안테나를 나타낸 사시도이고, 제2도는 제1도에 도시된 안테나 루프의 단면도이며, 제3도는 본 발명의 다른 실시예에 의한 안테나의 사시도이다.1 is a perspective view showing an antenna according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the antenna loop shown in FIG. 1, and FIG. 3 is a perspective view of an antenna according to another embodiment of the present invention.

본 발명의 일실시예에 따라 제작된 전방향성 루프안테나는 제1도 및 제2도에 도시된 바와같이 서로다른 장변을 가진 사각형상의 제1, 2루프(1)(1a)의 외측면에는 다수개의 요홈부(2)가 형성되어 있고, 상기 제1, 제2루프(1)(1a)는 서로 직교되어 베이스기판상에 설치되어 있다.The omni-directional loop antenna fabricated according to one embodiment of the present invention has a plurality of outer surfaces of the rectangular first and second loops 1 and 1a having different long sides as shown in FIGS. 1 and 2. Two grooves 2 are formed, and the first and second loops 1 and 1a are orthogonal to each other and are provided on the base substrate.

한편, 제1, 2루프(1)의 외측면에 형성된 다수개의 요홈부(2)에는 전력분배기(4)에서 출력되는 일정전원이 공급되는 동축선(5)에 연장된 도체선(3)이 일정횟수 만큼 권회되어 있다.On the other hand, the plurality of grooves 2 formed on the outer surfaces of the first and second loops 1 have conductor lines 3 extending to the coaxial line 5 to which a constant power output from the power distributor 4 is supplied. It is wound up a certain number of times.

한편, 본 발명의 다른 실시예에 의한 전방향성 루프안테나는, 제3도에 도시된 바와같이 서로다른 반경을 가진 원통형상의 제1, 2루프(1)(1a)의 외주면에는 다수개의 요홈부(2)가 형성되어 있고, 상기 제1, 2루프(1)(1a)는 서로 직교되도록 베이스기판상에 설치되어 있다.On the other hand, the omni-directional loop antenna according to another embodiment of the present invention, as shown in Figure 3, the outer circumferential surface of the cylindrical first, second loop (1) (1a) having a different radius of the plurality of grooves ( 2) is formed, and the first and second loops 1 and 1a are provided on the base substrate so as to be perpendicular to each other.

그리고, 상기 제1, 2루프(1)(1a)의 외주면에 형성된 다수개의 요홈부(2)에는 전력분배기(4)로 부터 일정전원이 인가되는 도체선(3)이 권회되어 있다.Further, the conductor wire 3 to which a constant power is applied from the power distributor 4 is wound around the plurality of recesses 2 formed on the outer circumferential surfaces of the first and second loops 1 and 1a.

상기와 같은 실시예를 가진 본 발명의 전방향성 루프안테나는 다음과 같은 작용효과를 가진다.The omni-directional loop antenna of the present invention having the above embodiment has the following effects.

제1도 및 제3도에 도시된 전방향성 루프안테나는 각각 사각과 원통형상을 가진 제1, 2루프(1)(1a)의 외측면과 외주면에 형성된 다수개의 요홈부(2)에 전력분배기(4)에서 출력되는 일정전원이 공급되는 도체선(3)이 N회 권회되고 서로 직교되도록 베이스기판상에 설치되어 있다.The omnidirectional loop antenna shown in FIGS. 1 and 3 distributes power to a plurality of recesses 2 formed on the outer and outer circumferential surfaces of the first and second loops 1, 1a having a rectangular and cylindrical shape, respectively. The conductor wire 3 to which constant power output from (4) is supplied is wound on N times and provided on the base substrate so as to be orthogonal to each other.

따라서, 제1, 2루프(1)(1a)간의 급전위상이 90°가 되면 어느방향으로도 도래하는 전파를 수신할 수 있는 전방향성 특성을 갖게되는데, 제1루프(1)에 의한 거리 r에서의 전계를 E1이라 할 때,Accordingly, when the power supply phase between the first and second loops 1 and 1a becomes 90 °, the omnidirectional characteristic capable of receiving radio waves arriving in any direction is obtained, but the distance r by the first loop 1 is obtained. When the electric field at is E 1 ,

그리고, 제2루프(1a)에 의한 전계 E2는 E1과 같으나, Sinθ 대신 Sin(π/2)-θ=COSθ로 되므로 전체전계는 중첩원리에 의해 E=E1-E2가 되므로 지향특성을 나타내는 지향성을 D라 하면,The electric field E 2 of the second loop 1a is equal to E 1 , but instead of Sin θ, Sin (π / 2) -θ = COSθ, so the entire electric field is E = E 1 -E 2 due to the overlapping principle. If the directivity representing the characteristic is D,

D=[Sinθ+COSθ]D = [Sinθ + COSθ]

로서, 전방향성을 특성을 갖게 되는 것이다.As a result, omnidirectionality is to be characterized.

따라서, 제2루프(1a)가 90°의 위상차를 갖도록 하기 위해서는 90°위상변위가 필요하므로 동축선(40)으로 전송선로의 길이를 1/4 전송파장이 되게 하였다.Therefore, in order for the second loop 1a to have a phase difference of 90 °, a 90 ° phase shift is required, so that the length of the transmission line is 1/4 transmission wavelength on the coaxial line 40.

상기와 같은 특성을 가진 본 발명의 전방향성 루프안테나는 사용용도에 따라 제1, 2루프(1)(1a)와 도체선(3)의 권회(N)가 각각 다르게 설정되는데, 가장 바람직한 실시예는 아래와 같다.The omni-directional loop antenna of the present invention having the above characteristics is set differently between the windings N of the first and second loops 1, 1a and the conductor wire 3, depending on the intended use. Is shown below.

[실시예]EXAMPLE

1) 본 발명에 따른 사각형상의 루프를 이용한 전방향성 안테나에서, 루프 각변의 길이가 15cm일때, N=22, 동축선=50cm이고, 루프 각변의 길이가 20cm일때, N=12, 동축선=50cm이다.1) In the omni-directional antenna using the rectangular loop according to the present invention, when the length of each loop side is 15cm, N = 22, coaxial line = 50cm, and when the length of the loop side is 20cm, N = 12, coaxial line = 50cm to be.

2) 본 발명에 따라 원통형상의 루프를 이용한 전방향성 안테나에서,2) in the omni-directional antenna using a cylindrical loop according to the invention,

① 루프변경이 6cm일때, N=39, 동축선=50cm① When loop change is 6cm, N = 39, coaxial line = 50cm

② 루프변경이 7cm일때, N=28, 동축선=50cm② When loop change is 7cm, N = 28, coaxial line = 50cm

③ 루프변경이 8cm일때, N=22, 동축선=50cm③ When loop change is 8cm, N = 22, coaxial line = 50cm

④ 루프변경이 9cm일때, N=17, 동축선=50cm④ When loop change is 9cm, N = 17, coaxial line = 50cm

⑤ 루프변경이 10cm일때, N=14, 동축선=50cm⑤ When loop change is 10cm, N = 14, coaxial line = 50cm

상기 실시예와 같이 루프길이와 변경에 따라 도체선이 권회횟수와 동축선 길이를 결정하여 전방향성 안테를 제작하면, 루프면 부분으로 도래하는 전파를 수신하게 되므로 이동하는 자동차 실내에 설치되어 TV 방송신호와 이동통신 신호등을 방향에 관계없이 수신할 수 있는 장점이 있다.As described in the above embodiment, when the conductor wire determines the number of turns and the coaxial line length according to the loop length, and manufactures the omnidirectional antenna, since the radio wave receives the radio wave coming to the roof surface part, the TV is installed in the moving car interior. There is an advantage that can receive a signal and a mobile communication signal regardless of the direction.

Claims (1)

사각 내지 원형 형상을 가지고 서로 90°방향으로 직교된 제1, 2루프와, 상기 제1, 2루프의 외측면(외주면)에 형성된 다수개의 요홈부에 권회된 도체선과, 상기 도체선과 일정전원을 공금하는 전력분배기 사이에 전기적으로 접속되어 위상변위를 결정하는 동축선으로 구성된 것을 특징으로 하는 전방향성 루프안테나.First and second loops having a square to circular shape and orthogonal to each other in a 90 ° direction, conductor wires wound around a plurality of recesses formed on outer surfaces (outer peripheral surfaces) of the first and second loops, and the conductor wires and a constant power source. An omni-directional loop antenna, which is composed of coaxial lines that are electrically connected between power distributors to determine a phase shift.
KR1019920012494A 1992-07-14 1992-07-14 Loop antenna KR940011485B1 (en)

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Application Number Priority Date Filing Date Title
KR1019920012494A KR940011485B1 (en) 1992-07-14 1992-07-14 Loop antenna

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Application Number Priority Date Filing Date Title
KR1019920012494A KR940011485B1 (en) 1992-07-14 1992-07-14 Loop antenna

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KR940011485B1 true KR940011485B1 (en) 1994-12-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105870631A (en) * 2016-05-24 2016-08-17 北京森馥科技股份有限公司 Double-loop antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105870631A (en) * 2016-05-24 2016-08-17 北京森馥科技股份有限公司 Double-loop antenna
CN105870631B (en) * 2016-05-24 2019-08-13 北京森馥科技股份有限公司 Double loop antenna

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