• Title/Summary/Keyword: PCS 안테나

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Design of Dipole Array Antennas for PCS/IMT-2000 (PCS/IMT-2000을 위한 다이폴 배열 안테나의 설계)

  • 최학윤
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.13 no.9
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    • pp.873-881
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    • 2002
  • In this paper, the rectangular reflector antenna with 8-dipole array for PCS band (1,750 MHz ~ l,870 MHz) and IMT-2000 band(1,885 MHz ~ 2,200 MHz) is designed and the radiation characteristics are analyzed using the method of moments and HFSS(High Frequency Structure Simulator). To verify the analysis results, rectangular reflector antenna with 8-dipole array is fabricated and the calculated results are compared with the measured results. The measured results show good agreement with the calculated results. As a result of measurements, bandwidth(VSWR< 1.5) of 450 MHz is achieved at PCS and IMT-2000 band and gain is 16 dBi. The designed antenna can be used as the base station antenna for PCS/IMT-2000.

Microstrip patch antenna using 3 dimensional microstrip transition (3차원 천이를 이용한 마이크로스트립 패치 안테나)

  • 박동국;최형동
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.5 no.4
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    • pp.817-821
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    • 2001
  • In this paper, we design a microstrip patch antenna using 3-dimensional microstrip transition with the VSWR 1.3 over the PCS band (1.75 -1.87 GHz). We study experimentally the effect of the antenna parameters on antenna input impedance. And using the proposed antenna, we fabricate a polarization diversity any antenna and discuss the possibility of antenna for PCS base station.

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Design of U-slot Array for OCS Base Station (PCS 기지국용 U-슬롯 어레이 안테나 설계)

    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.12 no.1
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    • pp.117-124
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    • 2001
  • In this paper, the design of a U-slot array antenna for PCS base station has been implemented and studied. The U-slot antenna is a single layer type with an antenna volume smaller but a bandwidth lager than the designs utilizing parasitic patches, which exceed 17 % bandwidth, for the probe fed case. Designed U-slot array antenna has stable radiation patterns and an average gain above 12 dB across the PCS frequency band. In this paper, through the designing of a U-slot array antenna, we have presented the availability for PCS base station antenna.

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Development of Indoor Repeater LHCP antenna with Dual Bands (듀얼 대역 실내 중계기용 LHCP 안테나 개발)

  • Park, Sung-Il;Kim, Sun-Il
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.13 no.5
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    • pp.221-227
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    • 2013
  • In this paper, Satellite DMB/WiBro antenna and PCS/WiBro antenna improving indoor coverage for mobile services are designed and fabricated. Satellite DMB/WiBro bands repeater antenna and PCS/WiBro bands repeater antenna are proposed as a simple radiator with loading capacitor to generate LHCP(Left Hand Circular Polarization). The proposed antenna for Satellite DMB/WiBro and PCS/WiBro bands communication are fabricated by copper plate uploader type and substrate uploader type. The designed and fabricated antenna has a bandwidth of 70MHz at 1.816GHz~1.886GHz and bandwidth of 107MHz at 2.247GHz~2.354GHz. Maximum gain of radiation pattern was up to 5dBi.

EBG Resonator Antenna with a Stripline Type FSS Superstrate for PCS-band Base Station Antennas (스트립라인 형태의 주파수 선택적 표면 덮개층을 이용한 PCS대역 기지국용 EBG 공진기 안테나)

  • Yeo, Jun-Ho;Kim, Dong-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.8
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    • pp.15-27
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    • 2008
  • In this paper, an EBG(Electromagnetic BandGap) resonator antenna with a stripline type FSS(Frequency Selective Surface) superstrate for PCS-band base station antennas is proposed. The characteristics of resonant frequency and -3dB bandwidth of a unit cell of a superstrate are first analyzed by varing several design parameters such as a strip width and a unit cell width in order to design an EBG resonator antenna satisfying the required antenna gain and bandwidth for PCS-band base station antennas. Among various unit cell shapes, strip dipole and stripline are considered and their characteristics are compared. It was found that a resonant length of the EBG resonator antenna becomes smaller when the stripline shape is used and the control of the bandwidth is also much easier. By using the unit cell simulation results, planar and cylindrical EBG resonator antennas at PCS-band are designed.

Design and Fabrication of a Microstrip Patch Antenna with H-shape Aperture-Coupled structure for PCS Repeater (H자형 개구 결합구조를 갖는 PCS 중계기용 마이크로스트립 패치 안테나 설계 및 제작)

  • Lee, Jung-Gi;Jeoung, Chan-Gwoun;Kang, Young-Jin
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.11 no.3
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    • pp.465-470
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    • 2007
  • This paper is designed and producted the microstrip patch antenna which used aperture coupled feed structure, and had a comparatively hish gain and headband characteristic with a PCS substitution repeater antenna. The proposed antenna transformed a coupled slot into a H-type in order to improve a characteristic of a general aperture coupled feed antenna. It is this H-type form slot reduces back lobe from the antenna backside at the same time that a coupling between a power feed and patches is iccreased, and to have maximized a gain of an antenna. As a result of having measured the antenna which the VSWR was 1.5 or below and tied up the gain than 7.5dBi in the $1750{\sim}1870$[MHz] that was a PCS substitution, and a beamwidth became in $80^{\circ}$ and radio waves shadow was local, but accomplishment did PCS mobile communication service in building me smoothly, but confirmed what practical use can become.

The Design of Wideband Dipole Antenna using Four Rings (4개의 링 구조를 사용한 광대역 다이폴 안테나 설계)

  • Kim, Sang-Uk;Lee, Woon-Jong;Oh, Su-Hyun;Lee, Cheon-Hee;Park, Hyo-Dal
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.10 no.5
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    • pp.53-59
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    • 2011
  • In this paper wideband dipole antenna that is usable as PCS/WCDMA/WiBro/WiMax public relay station antenna is proposed. The proposed antenna that designed by using double ring structure improves bandwidth performance of existing dipole antenna to wideband performance. To verify wideband performance and isotropic radiation pattern of the proposed antenna, simulation and fabrication have progressed its radiation characteristic has measured and then compared with calculated result. Measured result is similar to calculated result and has gain of 2dB VSWR of 2:1 over 1.75~3GHz. It is considered that the dipole antenna that designed in this paper can be usable as PCS/WCDMA/WiBro/WiMax public relay station antenna.

The Design of a PCS Band Microstrip Patch Antenna with Auxiliary Wire and Annular Gap (보조 도선과 Annular Gap을 추가한 PCS 대역 마이크로스트립 패치 안테나 설계)

  • Choi, Kyoung-Sik;Yoon, Jong-Soeb;Ryu, Mi-Ra;Lee, Won-Hui;Hur, Jung
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.12 no.3
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    • pp.329-338
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    • 2001
  • In this paper, we designed microstrip patch antenna to enhance the weak point of general microstrip patch antenna that has narrow bandwidth and analyzed that. To reduce reactance in probe feed antenna, capacitive gap added to the patch. Using single patch and auxiliary wire, makes dual frequency resonant. So bandwidth is improved and gain also becomes higher. To verify with experiment, PCS band antenna is designed, fabricated. For PCS band antenna, bandwidth is 180 MHz in VSWR<1.5 and gain is 8.6 dBi.

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Design for Isolation Improvement between 2-Channel WiBro-MIMO and PCS Band Antenna (2-CH WiBro Band MIMO 안테나와 PCS 안테나 간의 격리도 향상을 위한 설계)

  • Kim, Min-Seong;Min, Kyeong-Sik
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.1
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    • pp.79-86
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    • 2008
  • This paper presents to improve of isolation characteristics between personal communication service(PCS) antenna In mobile terminal and 2-channel multi input multi output(MIMO) antenna in the wireless broadband Internet(WiBro) band. In order to improve the isolation between each channel antenna, the proposed PCS antenna with an air space of 3 mm height is located on the projected ground plane($25{\times}12mm$) which is very small space$(0.19{\lambda})$ between the 2-channel WiBro-MIMO antenna. The proposed PCS antenna structure is a modified planar inverted F antenna (PIFA) of spiral type with shorting strip line(6${\times}$4 mm). The calculated Isolation values between the proposed PIFA with 3-dimensional structure and the MIMO antenna at Wibro band are about -20dB below and agree well with the measurement. Measured return loss, bandwidth, and gain o# the proposed antenna are -20dB at 1.8GHz, 110MHz(1.76${\sim}$1.87 GHz) band at -10dB below, and 0.05dBi, respectively, Moreover, we confirm that the proposed PCS antenna has no influence on performance and characteristics of the conversional 2-channel WiBro-MIMO antenna.

The Design of a Low-Profile Loading Sleeve Monopole for PCS and IMT-2000 Frequency Bands (PCS 및 IMT-2000 대역용 소형 로딩 슬리브 모노폴 설계)

  • 최광제;이은학
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.14 no.2
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    • pp.178-182
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    • 2003
  • In this paper, we designed a loading sleeve monopole operating at PCS and IMT-2000 frequency bands using the structure of the broadband loading sleeve monopole. The length of the designed antenna is lower than that of the helical antenna coupled with a whip used in commercial PCS handsets. The length and diameter of the designed antenna are 38 mm and 8 mm, respectively. The designed loading sleeve monopole is fabricated and investigated experimently. The VSWR is less than 1.5 in the PCS and IMT-2000 frequency bands(1750 MHz~2170 MHz) and gain is 3.5 dBi.