• Title, Summary, Keyword: Planar Monopole Antenna

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Compact and Wideband Fylfot-Shaped Planar Monopole Antenna

  • Shim, Jae-Ruen
    • Journal of information and communication convergence engineering
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    • v.7 no.4
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    • pp.449-452
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    • 2009
  • In this paper, a novel compact and wideband fylfot-shaped planar monopole antenna is proposed. The fylfot-shaped is suggested to reduce the volume of a general crossed planar monopole antenna. The volume of the proposed antenna is about 1/4 of a general crossed planar monopole antenna under the conditions where the wideband characteristics are maintained. This technique is suitable for the design of wideband planar monopole antenna which needed a small volume.

Design of Simplified Wideband Sleeve Monopole Antenna (광대역 슬리브 모노폴 안테나의 단순화 설계)

  • Hwang, Hee-yong;Choi, Kyoung
    • Journal of IKEEE
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    • v.23 no.3
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    • pp.1100-1103
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    • 2019
  • This paper presents the design method of a planar sleeve monopole antenna on PCB, which has wider bandwidth compared to that of the conventional sleeve monopole antenna, by showing the fact that the sleeve of the conventional antenna can be simplified in structure. The designed and fabricated planar sleeve monopole antenna's structure is very simple, with a monopole adjacent to a small square sleeve on FR4 PCB. The antenna shows 46% wider bandwidth compared to the corresponding 3-dimensional one with nearly omni-directional radiation property.

A Wideband Circularly Polarized Pinwheel-Shaped Planar Monopole Antenna for Wireless Applications

  • Lee, Wang-Sang;Oh, Kyoung-Sub;Yu, Jong-Won
    • Journal of electromagnetic engineering and science
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    • v.12 no.2
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    • pp.155-160
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    • 2012
  • A wideband circularly polarized pinwheel-shaped planar monopole antenna fed by a wideband feeding network is presented in this paper. The proposed antenna is formed by four wideband planar monopole antenna elements with aquadruple feeding network in order to improve the performance of circular polarization. Additionally, the antenna, which is introduced here, has a high gain in the z axis direction because of its folded antenna structure. The attractive characteristics of the proposed antenna are the wide impedance bandwidth of 87.3 % (1 GHz to 2.55 GHz), the 3 dB axial ratio (AR) bandwidth of 92.3 % (1.05 GHz to 2.85 GHz), and the maximum gain within the 3 dB AR bandwidth is about 8.24 dBic.

A Novel Monopole Antenna for ISM 2.45GHz/5.8GHz Dual Band Characteristics by a Linear Monopole Antenna Combined with a Crossed Planar Monopole Antenna (선형 모노폴 안테나와 십자형 모노폴 안테나의 결합에 의한 ISM 2.45GHz/5.8GHz 이중대역 특성을 가지는 안테나 설계)

  • Shim, Jae-Ruen
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.8 no.6
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    • pp.515-519
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    • 2015
  • In this paper, we suggested the novel monopole antenna for dual band characteristics by a linear monopole antenna combined with crossed planar monopole antenna. The target frequency is ISM(Industrial Scientific Medical) 2.45GHz/5.8GHz. The distinctive features of the proposed antenna in this paper is based on the slit in the surface of a crossed planar monopole for the dual band characteristics and the omnidirectional radiation patterns. The compact size of the proposed antenna is $36mm{\times}5.4mm{\times}5.4mm$. According to the simulation results, the bandwidth, the reflection coefficients below -10dB, of 2.45GHz and 5.8GHz are 150MHz and 1.43GHz, respectively. Consequently the proposed antenna structures is apply to the antenna for dual band characteristics.

A Study on Improving Impedance Characteristics of Planar Monopole Antenna with Vertical Ground Plane (수직 접지면을 갖는 평판형 모노폴 안테나의 임피던스 특성 개선에 관한 연구)

  • Jung, Jin-Woo;Lee, Hyeon-Jin;Lim, Yeong-Seog
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.48 no.5
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    • pp.54-63
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    • 2011
  • This paper presents the improving impedance charactersitics of a planar monopole antenna with a vertical ground plane. For improving impedance characteristics, we used the effect of a vertical ground plane. To analyze the effect of vertical ground plane, we proposed the dipole antenna mode. the impedance characteristics of planar monopole antenna are improved by correlation between monopole antenna and vertical ground plane, based on each operating mode. Our analysis indicates can improve the impedance characteristics of varying planae monopole antennas.

A Study on Dual Band Characteristics for ISM 2.45GHz/5.8GHz Using Two Crossed Planar Monopole Antenna (두 개의 Crossed Planar 모노폴 안테나에 의한 ISM 2.45GHz/5.8GHz 이중대역 특성 연구)

  • Shim, Jaeruen;Chun, Joong-Chang;Lee, Kwang-Seok
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.739-741
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    • 2014
  • We suggested the new compact dual band monopole antenna using two crossed planar monopole antenna. The proposed antenna will be used for the ISM dual band 2.45GHz/5.8GHz. It is necessary to verify its performance through the follow-up development of the proposed antenna for the high-speed wireless actual communications.

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Double Resonance Characteristics of Crossed Planar Monopole Antenna by L-Shaped Slit (L형 슬릿에 의한 십자형 평판 모노폴 안테나의 이중공진 특성)

  • Shim, Jae-Ruen
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.3
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    • pp.508-512
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    • 2007
  • In this paper, a novel wideband crossed planar monopole antenna with the double resonance characteristics is proposed. The proposed monopole antenna consists of a wideband crossed planar monopole antenna and L-shaped slits. In order to generate double resonance characteristics on the proposed monopole antenna, the length of L-shaped slit on the antenna surface is obtained from the quarter-wavelength of the second resonance frequency The double resonance characteristics of the proposed antenna can be easily designed by the control of length of L shaped slit at an interesting frequency. The proposed antenna having an omnidirectional radiation pattern and a high gain over the double resonance frequency bands, respectively, is suitable for mobile multiband antenna.

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A Study on the Multiple Resonance Characteristics of Crossed Planar Monopole Antenna by L-Shaped Slit (십자형 평판 모노폴 안테나의 L자형 슬릿에 의한 다중 공진 특성 연구)

  • Shim, Jae-Ruen
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.13 no.1
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    • pp.1-5
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    • 2009
  • In this paper, a novel wideband crossed planar monopole antenna with the multiple resonance characteristics is proposed. The proposed monopole antenna can be designed by a wideband crossed planar monopole antenna with L-shaped slits. In order to generate multiple resonance characteristics on the proposed monopole antenna, the length of L-shaped slit and the number of L-shaped slits are determined at an interesting frequency. The proposed antenna having an omnidirectional radiation pattern and a high gain over the multiple resonance frequency bands, respectively, is suitable for a mobile antenna.

Dual-band Planar Monopole Antenna for Autonomous Vehicle (자율주행자동차를 위한 이중대역 평판 모노폴 안테나)

  • Yoon, Yonghyun
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.12 no.4
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    • pp.343-348
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    • 2019
  • In this paper, a dual-band antenna is proposed for the autonomous vehicle as well as omni-directional. The proposed antenna operates in the 4G/LTE band (1,710~2,170MHz) and 5G/NR band (3,400~3,700MHz). In order to obtain the dual-band operation, the planar monopole antenna is proposed as the novel structure with single port of the 50ohm. To give the properties of dual-band, an additional antenna element with slit was added to the planar monopole antenna, and then a structural adjustment parameter was optimized for achieving the target performance in bands. The planar monopole antenna in the LTE band acts as the coupled feed for the added parasitic radiator in the 5G NR band. The proposed antenna has $38.5{\times}36.0{\times}1.0[mm^3]$ on a ground with diameter of 96mm. From the fabrication and measurement results, the impedance bandwidth (VSWR<2) of the proposed antenna covers 1,480~2,260MHz (LTE band: 1,710~2,170MHz) and 3,310~3,930MHz (5G NR band: 3,400~3,700MHz). The proposed planar monopole antenna also obtained the measured gain and radiation pattern of omni-directional radiation pattern in the anechoic chamber.

CPW-fed Broadband Monopole Antenna for HDTV Reception (CPW로 급전되는 HDTV용 광대역 모노폴 안테나)

  • Lee, Jong-Ig;Han, Dae-Hee;Kim, Soo-Min;Kim, Gun-Kyun;Yeo, Junho
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.564-566
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    • 2012
  • In this paper, a design method for a compact broadband planar monopole antenna fed by coplanar waveguide (CPW) is studied. The proposed broadband monopole is optimized for terrestrial digital television (DTV) receiving. The monopole is fed by a CPW with 75-ohm characteristic impedance on an FR4 substrate and its size is $100mm{\times}200mm$. A pair of slit is appended for size reduction and an inductive stub is loaded for the impedance matching between the feedline and monopole. The optimized monopole antenna for DTV band (470-806 MHz) is fabricated on an FR4 substrate and tested experimentally to verify the results of this study.

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