KR20010063379A - H-slot Plane Shaped Microstrip Antenna - Google Patents

H-slot Plane Shaped Microstrip Antenna Download PDF

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Publication number
KR20010063379A
KR20010063379A KR1019990060442A KR19990060442A KR20010063379A KR 20010063379 A KR20010063379 A KR 20010063379A KR 1019990060442 A KR1019990060442 A KR 1019990060442A KR 19990060442 A KR19990060442 A KR 19990060442A KR 20010063379 A KR20010063379 A KR 20010063379A
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KR
South Korea
Prior art keywords
slot
antenna
micro strip
electromagnetic wave
length
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KR1019990060442A
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Korean (ko)
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KR100365733B1 (en
Inventor
박항구
윤현보
김동섭
Original Assignee
송문섭
주식회사 현대큐리텔
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Priority to KR1019990060442A priority Critical patent/KR100365733B1/en
Priority to US09/745,327 priority patent/US6515626B2/en
Priority to JP2000390467A priority patent/JP2001203521A/en
Publication of KR20010063379A publication Critical patent/KR20010063379A/en
Application granted granted Critical
Publication of KR100365733B1 publication Critical patent/KR100365733B1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas
    • 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
    • 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
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line

Abstract

PURPOSE: An H-slot flat micro strip antenna is provided to have a wide band, facilitate an impedance matching, reduce adverse effect of an electromagnetic wave on a human body, and improve emissivity. CONSTITUTION: A micro strip H-slot is formed in parallel to a side surface of a metal plate. A feed line supplies a predetermined power to the H-slot and inputs a receiving signal. A lateral line of the H-slot is shaped like a sawtooth and a length the H-slot is 1/4 of an electromagnetic wave length. A slot length is λ/4. By virtue of the electromagnetic coupling, wide band features and superior impedance matching are achievable, emissivity is excellent and a strong electric wave is emitted. The H-slot flat micro strip antenna is mountable on an inside of a terminal in place of an existing solid helical antenna. Further, the H-slot flat micro strip antenna is embedded on an upper end part within the terminal so as to minimize an adverse effect of an electromagnetic wave, maximize antenna efficiency and attain a small sized and light weighed antenna.

Description

에이치-슬롯 평면형 마이크로 스트립 안테나 {H-slot Plane Shaped Microstrip Antenna}H-slot Plane Microstrip Antenna

본 발명은 H-슬롯 평면형 마이크로 스트립 안테나에 관한 것으로, 특히 개인통신서비스(PCS: Personal Communication Services)와 무선가입자망(WLL: Wireless Local Loop) 단말기에 내장되는 H-슬롯 평면형 마이크로 스트립 안테나에 관한 것이다.The present invention relates to an H-slot planar microstrip antenna, and more particularly, to an H-slot planar microstrip antenna embedded in a Personal Communication Services (PCS) and Wireless Local Loop (WLL) terminal. .

현재, 가장 많이 사용되고 있는 단말기 안테나는 수축되었을 때 헬리컬 안테나로 동작하고, 확장되었을 때 헬리컬 안테나와 모노폴 안테나가 결합에 의해 동작하고 있으며, 또 휴대용 단말기 본체의 하우징을 접지로 이용하고 있다.Currently, the most commonly used terminal antenna operates as a helical antenna when it is contracted, and when a helical antenna and a monopole antenna are operated when they are expanded, the housing of the portable terminal main body is used as the ground.

도 1a은 종래의 헬리컬 안테나(100)의 일예를 도시한 도면이다. 헬리컬 안테나(100)는 유전체 실린더(104)와 이 유전체 실린더(104) 주변에 감겨있는 플렉시블 인쇄 배선 시트(107)를 구비하고, 두 개의 헬리컬 밸런스 도전체(101 및 101')를 갖추고 있다. 동축 케이블(105)의 언밸런스 RF 신호(무선 주파수 신호)는 밸룬(balun: 108)에 의해 밸런스 RF 신호로 변환된다. 그 후, 밸런스 RF 신호는 두 헬리컬 밸런스 도전체(101 및 101')의 각각에 공급된다.1A is a diagram illustrating an example of a conventional helical antenna 100. The helical antenna 100 has a dielectric cylinder 104 and a flexible printed wiring sheet 107 wound around the dielectric cylinder 104 and has two helical balance conductors 101 and 101 '. The unbalanced RF signal (radio frequency signal) of the coaxial cable 105 is converted into a balanced RF signal by a balun 108. The balanced RF signal is then supplied to each of the two helical balanced conductors 101 and 101 '.

도 1b는 도 1(a)에 도시된 헬리컬 안테나(100)의 금속 도전체(106)의 사시도를 예시한다. 헬리컬 도전체(101 및 101')의 단부는 스트레이트 금속 도전체(106)에 의해 단락 회로화된다. 금속 도전체(106)는 헬리컬 도전체(101 및 101')를 보호함으로써, 그들의 기계적 강도를 향상시키고 헬리컬 안테나(100)의 임피던스 매칭을 실현하게 된다.FIG. 1B illustrates a perspective view of the metal conductor 106 of the helical antenna 100 shown in FIG. 1A. The ends of the helical conductors 101 and 101 'are short-circuited by the straight metal conductor 106. The metal conductors 106 protect the helical conductors 101 and 101 ', thereby improving their mechanical strength and realizing the impedance matching of the helical antenna 100.

그런데, 종래 기술의 헬리컬 안테나(100)는 모든 헬리컬 도전체들에 피더 임피던스 매칭을 반드시 제공할 수 있는 것은 아니다. 광대역의 주파수 대역에서 헬리컬 안테나(100)의 피더 임피던스 매칭을 실현하는 것은 불가능하다. 또한, 이러한 구조의 단말기 안테나는 방사패턴이 안테나 전체의 중심부에서 나타나게 되어 전자파에 의해 인체 두부가 영향을 받을 뿐 아니라, 사용자에 의해 안테나의 방사가 방해를 받아 방사효율의 저하를 초래한다. 또한, 안테나의 크기가 크고 외부에 부착되어 있어서 단말기 소형화에 많은 제한을 준다.However, the helical antenna 100 of the prior art may not necessarily provide feeder impedance matching to all helical conductors. It is impossible to realize feeder impedance matching of the helical antenna 100 in the wide frequency band. In addition, in the terminal antenna of this structure, the radiation pattern appears in the center of the entire antenna, not only the head of the human body is affected by the electromagnetic wave, but also the radiation of the antenna is disturbed by the user, resulting in a decrease in radiation efficiency. In addition, the size of the antenna is large and attached to the outside, which places a lot of restrictions on the miniaturization of the terminal.

본 발명의 목적은 광대역성을 가지면서 임피던스 매칭이 용이할 뿐만 아니라 인체에 미치는 전자파의 영향을 줄임과 동시에 방사효율이 높은 H-슬롯 평면형 마이크로 스트립 안테나를 제공하는 데에 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide an H-slot planar microstrip antenna having a wideband capability, easy to match impedance, and reducing radiation effect on the human body and at the same time having high radiation efficiency.

도 1a 및 도 1b는 각각 종래의 헬리컬 안테나(100) 및 금속 도전체(106)의 일예를 도시한 도면이고,1A and 1B are diagrams illustrating an example of a conventional helical antenna 100 and a metal conductor 106, respectively.

도 2a은 본 발명의 일실시예에 따른 H-슬롯 평면형 마이크로 스트립 안테나의 단면도이고,2A is a cross-sectional view of an H-slot planar microstrip antenna according to one embodiment of the invention,

도 2b은 상기 마이크로 스트립 안테나에 대한 피드선을 도시한 단면도이다.2B is a cross-sectional view illustrating a feed line for the microstrip antenna.

도3은 상기 H-슬롯 평면형 마이크로 스트립 안테나의 사양을 도시한 표이다.3 is a table showing specifications of the H-slot planar microstrip antenna.

상기 목적을 달성하기 위해 본 발명은 기존의 입체 헬리컬 안테나를 대신하여 단말기의 내부에 실장할 수 있는 H-슬롯 평면형 마이크로 스트립 안테나를 제공한다.In order to achieve the above object, the present invention provides an H-slot planar microstrip antenna that can be mounted in the terminal instead of the conventional three-dimensional helical antenna.

이하, 본 발명에 따른 바람직한 실시예를 도면을 참고하여 설명한다.Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

도 2a은 본 발명의 일실시예에 따른 H-슬롯 평면형 마이크로 스트립 안테나의 단면도이다. 즉, 금속판의 측면에 평행하게 H형의 주름진 슬롯이 형성되어 있다. 슬롯 길이(L1)는이며, 이러한 형태의 전자기 결합에 의한 급전방식은 광대역 특성 및 양호한 임피던스 매칭을 나타낼 뿐 아니라, 방사효율이 좋고 강한 전파가 방사된다.2A is a cross-sectional view of an H-slot planar microstrip antenna in accordance with one embodiment of the present invention. That is, an H-shaped corrugated slot is formed parallel to the side surface of the metal plate. Slot length (L1) In addition, the power feeding method by this type of electromagnetic coupling not only shows broadband characteristics and good impedance matching, but also has good radiation efficiency and strong radio waves.

상기 안테나에 대한 급전은 도 2b에 도시한 바와 같은 피드선에 의해 행해진다. 도면에 도시한 바와 같이, 상기 H-슬롯에 소정의 전원을 공급함과 동시에 수신신호를 입력하기 위한 상기 피드선은 상기 도2(a)의 H-슬롯의 중앙부 근처까지 연장되어 있다.Power feeding to the antenna is performed by a feed line as shown in Fig. 2B. As shown in the figure, the feed line for inputting a received signal while supplying predetermined power to the H-slot extends near the center of the H-slot of FIG.

도3은 상기 H-슬롯 평면형 마이크로 스트립 안테나의 사양을 도시한 표이다. 이 표에서 수신 주파수 대역의 중심 주파수는 1.8 GHz이며, 또한 대역폭은 170 MHz이고, 임피던스는 50 Ω이고, 게인은 2 dBi를 얻었다.3 is a table showing specifications of the H-slot planar microstrip antenna. In this table, the center frequency of the reception frequency band is 1.8 GHz, the bandwidth is 170 MHz, the impedance is 50 Ω, and the gain is 2 dBi.

이상, 설명한 바와 같이 본 발명에 의하면, 단말기의 내부에 실장할 수 있는 H-슬롯 평면형 마이크로 스트립 안테나를 제공함으로써 매칭이 용이하면서 광대역특성을 가지는 소형의 안테나를 얻을 수 있다. 또한, 단말기내 상단부에 내장시킴으로써 인체에 미치는 전자파의 영향을 최소화하고 안테나의 효율을 극대화시키며 안테나의 소형화, 경량화를 얻을 수 있다.As described above, according to the present invention, by providing an H-slot planar microstrip antenna that can be mounted inside the terminal, a small antenna having easy broadband matching and wide band characteristics can be obtained. In addition, by embedding in the upper end of the terminal, it is possible to minimize the influence of electromagnetic waves on the human body, maximize the efficiency of the antenna, and to obtain a miniaturized and lightweight antenna.

Claims (2)

금속판의 측면에 평행하게 형성된 마이크로 스트립 H-슬롯과,A micro strip H-slot formed parallel to the side of the metal plate, 상기 H-슬롯에 소정의 전원을 공급함과 동시에 수신신호를 입력하기 위한 피드선으로 이루어진 H-슬롯 평면형 마이크로 스트립 안테나.An H-slot planar microstrip antenna comprising a feed line for supplying a predetermined power to the H-slot and inputting a received signal. 상기 H-슬롯의 측선은 톱니형 주름형상이며, 그 길이는 방사 전자파 파장의 1/4인 것을 특징으로 하는 H-슬롯 평면형 마이크로 스트립 안테나.The side line of the H-slot is a sawtooth corrugated, the length of the H-slot planar microstrip antenna, characterized in that one quarter of the radiated electromagnetic wave wavelength.
KR1019990060442A 1999-12-22 1999-12-22 Planar H-slot Antenna KR100365733B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019990060442A KR100365733B1 (en) 1999-12-22 1999-12-22 Planar H-slot Antenna
US09/745,327 US6515626B2 (en) 1999-12-22 2000-12-21 Planar microstrip patch antenna for enhanced antenna efficiency and gain
JP2000390467A JP2001203521A (en) 1999-12-22 2000-12-22 Flat microstrip patch antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019990060442A KR100365733B1 (en) 1999-12-22 1999-12-22 Planar H-slot Antenna

Publications (2)

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KR20010063379A true KR20010063379A (en) 2001-07-09
KR100365733B1 KR100365733B1 (en) 2002-12-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992637B2 (en) 2003-08-27 2006-01-31 Electronics And Telecommunications Research Institute Slot antenna having slots formed on both sides of dielectric substrate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006115363A1 (en) 2005-04-26 2006-11-02 E.M.W. Antenna Co., Ltd. Ultra-wideband antenna having a band notch characteristic
WO2006137666A1 (en) 2005-06-20 2006-12-28 E.M.W. Antenna Co., Ltd. Antenna using electrically conductive ink and production method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6992637B2 (en) 2003-08-27 2006-01-31 Electronics And Telecommunications Research Institute Slot antenna having slots formed on both sides of dielectric substrate

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