• Title/Summary/Keyword: 슬롯 안테나

Search Result 422, Processing Time 0.026 seconds

2.4GHz Compact Loop Slot Antenna with Vertical Slots (수직 슬롯을 갖는 CPW 급전 방식의 2.4GHz용 소형 루프 슬롯 안테나)

  • Kim, Gun-Kyun;Lee, Jong-Ig;Rhee, Seung-Yeop
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2015.10a
    • /
    • pp.71-72
    • /
    • 2015
  • 본 논문에서는 CPW(Coplanar waveguide) 급전되는 평면 루프 슬롯을 2.45 GHz 대역 Wi-Fi용으로 소형화 설계하는 방법에 대해 연구하였다. 제안된 구조는 직사각형 형태의 CPW 급전 루프 슬롯 안테나를 기본형으로 하여 내부 패치에 슬롯을 좌우 대칭으로 여러 개 수직 방향으로 배치한 안테나이며, FR4 기판의 한 면에 인쇄된다. 여러 가지 파라미터 값들이 안테나의 특성에 미치는 영향을 관찰하고 기존 루프 슬롯 안테나를 소형화하는 방법에 대해 연구하였다. FR4 기판에 $80mm{\times}50mm$ 크기로 2.45 GHz 대역용으로 설계된 안테나의 특성을 시뮬레이션을 통해 분석하였다.

  • PDF

"ㄱ"형 슬롯구조를 갖는 이중대역 마이크로스트립 패치 안테나의 설계

  • 윤강석;홍종수;임계재
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
    • /
    • 2002.11a
    • /
    • pp.268-272
    • /
    • 2002
  • 슬롯이 있는 직사각형 마이크로스트립 안테나의 이중주파수 동작 특성을 연구하였다. 마이크로스트립 안테나의 급전방식은 전자기적으로 결합된 단일 마이크로스트립 안테나이며, 패치구조는 직사각형 패치의 대각선 방향에 "ㄱ"형 슬롯을 대칭으로 배치시켰다. 본 논문에서 제안된 "ㄱ"형 슬롯의 장점으로는 패치의 크기를 줄이는 효과와 동시에 이중 대역의 주파수를 갖는 것으로 확인되었다. 제안된 마이크로스트립 안테나의 반사손실은 S11에서 -10 dB 기준으로 첫 번째 공진점 4.808 ㎓ 에서는 120 MHz의 대역폭을 가졌고, 두 번째 공진점 6.175 GHz 에서는 100 MHz의 대역폭을 가졌다.는 100 MHz의 대역폭을 가졌다.

  • PDF

Design of Tapered Slot Antenna for UWB Communications (UWB 통신을 위한 테이퍼드 슬롯 안테나 설계)

  • Kim, Sun-Woong;Choi, Dong-You
    • Smart Media Journal
    • /
    • v.4 no.4
    • /
    • pp.64-69
    • /
    • 2015
  • In this paper, we have proposed a tapered slot antenna for UWB communication system. The tapered slot antenna has directional radiation and broad bandwidth. Proposed tapered slot antenna is designed using Ansys Inc. HFSS and its VSWR, return los, and radiation pattern is analyzed. Operating band of the antenna were satisfied -10 dB S11 and $VSWR{\leq}2$ in 2.7 ~ 4.8 GHz band. The radiation pattern of the antenna is showed in E-plane (YZ plane) and the H-plane (XZ plane) and the highest gain of 7.3 dBi is seen at 4.5 GHz. Therefore, proposed tapered slot antenna has wide bandwidth characteristic and directional for location awareness.

Design of Compact CPW-fed Slot Antenna Using Split-Ring Resonators (분할 링 공진기를 이용한 소형 CPW급전 슬롯 안테나 설계)

  • Park, Jin-Taek;Yeo, Junho;Lee, Jong-Ig
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.18 no.10
    • /
    • pp.2351-2358
    • /
    • 2014
  • In this paper, a design method for a compact CPW-fed slot antenna using SRRs is studied. The structure of the proposed slot antenna is a rectangular slot antenna loaded with SRR conductors inside the slot to reduce the antenna size. Optimal design parameters are obtained by analyzing the effects of the gap between the SRR conductors and slot, and the width of the SRR conductors on the input VSWR characteristic. The optimized compact slot antenna operating at 2.45 GHz band is fabricated on an FR4 substrate with a dimension of 36 mm by 30 mm. The length of the proposed compact slot antenna is reduced to 14.3% compared to that of a conventional rectangular slot antenna. Experiment results show that the antenna has a desired impedance characteristic with a frequency band of 2.4-2.49 GHz for a VSWR < 2, and measured gain of 2.3 dBi at 2.45 GHz.

A Broadband Eccentric Annular Ring Microstrip Slot Antenna (광대역 특성을 갖는 변형된 원형 링 마이크로스트립 슬롯 안테나)

  • 서영훈;박익모
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.11 no.5
    • /
    • pp.773-781
    • /
    • 2000
  • We proposed an eccentric annular ring microstrip slot antenna for improving a narrow bandwidth of the conventional annular ring microstip slot antenna. The proposed antenna has an asymmetric slot and a normal microstrip feedline. This antenna is analyzed and optimized by using the finite difference time domain (FDTD) method. The impedance bandwidth of the optimized antenna is more than 1 octave that is much broader than the conventional annular ring microstrip slot antenna for the same size.

  • PDF

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
    • /
    • v.12 no.1
    • /
    • pp.117-124
    • /
    • 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.

  • PDF

Design and Fabrication of the Hybrid Slot Antenna for Wireless LAN at 5.8㎓ Band (5.8㎓ 대역 무선 LAN용 하이브리드 슬롯 안테나 설계 및 제작)

  • 고수미;이권익;김흥수
    • Journal of the Institute of Electronics Engineers of Korea TC
    • /
    • v.39 no.10
    • /
    • pp.21-26
    • /
    • 2002
  • In this paper, a hybrid slot antenna is designed and fabricated for wireless LAN at 5.8㎓ band. The hybrid slot antenna is consisted of the inductively-fed slot and capacitively-fed slot. To obtain wide bandwidth, the inductively-fed slot is designed at 5.3㎓ and the capacitively-fed slot is designed at 5.8㎓ Important parameters in the design are slot width and CPW length. The hybrid slot antenna is simulated by using Ensemble 6.0. The measured results of this antenna are compared with its simulated results. The resonant frequency of fabricated hybrid slot antenna is 5.8㎓, the bandwidth for VSWR<1.5 is 28% and the gain is 5 ㏈i. The 3-㏈ beamwidths in E-plane and H-plane are 60°and 44°, respectively.

Compact Slot Antenna for 5.8 GHz RFID (5.8 GHz RFID용 소형 슬롯 안테나)

  • Lee, Jong-Ig
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.17 no.12
    • /
    • pp.2763-2768
    • /
    • 2013
  • In this paper, a design method for a compact slot antenna for 5.8 GHz RFID band (5.725-5.875 GHz) is studied. The proposed slot antenna is size-reduced by bending both ends of the straight slot in "I"-shape, and a rectangular feed patch is located inside the slot. The effects of slot length, location of feed patch, and width and length of feed patch on the antenna performance are examined. A prototype antenna with optimized parameters for 5.8 GHz band is fabricated on an FR4 substrate and tested experimentally to verify the results of this study. The experimental results show that the frequency band for a VSWR < 3 ranges 5.72-6.13 GHz (bandwidth 410 MHz), and it corresponds fairly well with the simulated band 5.64-5.97 GHz (bandwidth 330 MHz). The fabricated antenna shows good radiation performance such as maximum power density in both directions normal to the slot plane, low cross-polarization level of < -20 dB, and realized gain > 0 dBi within the frequency band.

Design of wide-band slot loop antenna by using dual offset-fed (이중 오프셋 급전을 이용한 광대역 슬롯 루프 안테나의 설계)

  • 조영빈;나종덕;전계석
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.28 no.11A
    • /
    • pp.912-920
    • /
    • 2003
  • This paper is about the design of a small wide-band slot loop antenna, which consists of dual offset-fed and rectangular loop within the slot on a substrate. The proposed antenna is a novel structure generating a multi-resonances due to three geometrical resonance structures. The impedance matching of this antenna can be accomplished by changing the offset position of dual-fed at resonance frequencies. In this experiment, the slot of a fabricated antenna has a center frequency of 6.755㎓, 12.5mm${\times}$50mm in size and the rectangular loop has 10.5mm${\times}$27.5mm in size. The measured result is fractional bandwidth 63.21% with VSWR 2:1, which is agreed with the simulated result within 5% of error, and the maximum antenna gain is 7.42㏈i.

Design and Performance Evaluation of IR-UWB Tapered Slot Antenna for Optimum Impulse Radio Radiation (임펄스 신호 방사를 위한 IR-UWB용 테이퍼 슬롯 안테나 설계 및 성능평가)

  • Kim, Jong-Min;Koh, Young-Mok;Ra, Keuk-Whan
    • The Journal of The Korea Institute of Intelligent Transport Systems
    • /
    • v.11 no.5
    • /
    • pp.103-115
    • /
    • 2012
  • In this paper, design and performance evaluation of Tapered Slot Antenna for IR-UWB which propagates impulse radio is performed. TSA which has directional characteristic in UWB band should have low radiation loss and minimized impulse radiation distortion. In order to achieve these objectives, the paper designed wide band Impedance transformer and microstrip-slotline transit region structured TSA feeder line. By using the fabricated TSA, the radiation pattern was measured in the radio anechoic chamber. Pulse fidelity and distortion equation was induced to evaluate time domain characteristics according to the impulse radiation. Pulse fidelity of Impulse radiation show favorable results more than 93% within ${\pm}30^{\circ}$ beam width.