• Title/Summary/Keyword: Planar Monopole Antenna

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A Study on Notched Wi-Fi Bandwidth of Planar Monopole Antenna with Edge (에지를 가진 평면 모노폴 안테나의 무선랜 대역 저지에 관한 연구)

  • Lee, Yun Min;Lee, Jae Choon
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.9 no.4
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    • pp.43-49
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    • 2013
  • In this paper, it is designed inverted triangle structural planar monopole antenna with edge and rectangle slot for UWB(Ultra Wide Band) communication (3.1~10.6 GHz) and researched in about 5.8 GHz notch structure to prevent interference between UWB systems and existing wireless systems for using Wi-Fi service. The antenna have broadband property structurally through inverted triangle structural planar monopole which have edge. and rectangle form addition planned notch slot of 1 mm and height 0.1 mm. Monopole and ground of proposed antenna exist on coplanar plane, and excite as CPW. It used FR4 epoxy dielectric substrate of ${\varepsilon}r$=4.4, and the size is $20{\times}20{\times}1.6$ mm dimension. The measured results that are obtained return loss under -10 dB through 3.1~10.6 GHz(7.5 GHz) without Wi-Fi bandwidth and maximum gain of 8.44 dBi at E-plane. Radiation pattern is about the same that of dipole antenna at all frequency. And using notch slot and it will be able to confirm the quality which becomes notch from 5.8 GHz which are a radio LAN frequency range.

Wideband Rectangular Planar Monopole Antenna for OAM Wave Generation

  • Qasem, Nidal;Alamayreh, Ahmad
    • International Journal of Computer Science & Network Security
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    • v.21 no.3
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    • pp.55-59
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    • 2021
  • Generating electromagnetic waves with Orbital Angular Momentum (OAM) properties is a fast-growing research subject in both radio and optics. This paper describes the generation of OAM carrying waves using a circular array of rectangular planar monopole antennas. The proposed design combines simplicity, compactness, and most importantly very wideband of operating frequencies (about 20-160 GHz, bandwidth ratio about 1:8) which makes it suitable for future applications.

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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    • 2012.10a
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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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Internal Monopole Antenna Design for Multiband Operation and SAR Analysis (내장형 모노폴 안테나 설계 및 SAR분석)

  • Shin Chan-Soo;Shin Ho-Sub;Kim Nam;Choi Jae-Ic;Park Ju-Derk
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.15 no.12 s.91
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    • pp.1190-1198
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    • 2004
  • In this paper, meander-line planar monopole antenna mounted on PCS/IMT-2000/WLAN handset for SAR reduction is designed. Frequency characteristics and SAR value optimized with various design parameters are analyzed and designed. Designed internal monopole antenna mounted on the handset is simulated. The 1 g and 10 g peak average SARs of internal monopole antenna are 0.656 and 0.387 W/kg respectively. And internal monopole antenna and external monopole antenna attached on the handset are tested. As a result, internal monopole antenna 1 g and 10 g peak average SARs are 0.686 and 0.356 W/kg. And external monopole antenna's results are 1.33 and 0.812 W/kg, respectively. So internal monopole antenna has a about $50\%$ SAR reduction in comparison with external monopole antenna.

Design of the CPW-Fed Triple-band Internal Planar Monopole Antenna (CPW 급전 삼중대역 내장형 평면 모노폴 안테나 설계)

  • Lim, Jung-Sup;Kim, Cheol-Bok;Jang, Jae-Sam;Lee, Ho-Sang;Jung, Young-Ho;Cho, Dong-Ki;Lee, Mun-Soo
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.44 no.12
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    • pp.73-78
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    • 2007
  • In this paper, the CPW-fed triple-band internal planar monopole antenna which simultaneously meets the three bands such as Cellular, PCS and Wibro is designed. The size of the radiation elements can be reduced to about $\lambda/4$ by designing the CPW-fed monopole antenna and then we can miniaturize the antenna size by meandering the radiation elements. In addition, we design the planar antenna for the slim-type mobile phone. We can obtain the desired antenna properties by controlling the length of each radiation elements. The measured return loss of the antenna is less than -7 dB at the desired bandwidth. And the measured radiation patterns are similar to that of the monopole antenna. The designed antenna has the gains -5.2 dBi. -2 dBi, -0.4 dBi at each resonant frequencies respectively.

Planar Frequency-Reconfigurable Monopole Antenna Design (가변 주파수 특성을 갖는 평면형 모노폴 안테나 설계)

  • Kim, Youngkyu;Lim, Joingsik;Han, Sang-Min
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.25 no.11
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    • pp.1121-1127
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    • 2014
  • In this paper, a planar frequency reconfigurable antenna is proposed with variable capacitors. The proposed one is designed with a planar monopole, and varies resonant frequencies by variable capacitive loading of a varactor diode. The equivalent circuit and electromagnetic(EM) simulation are utilized for the analysis at the variable characteristic design of the antenna, and the same radiation performance. The implemented frequency variable monopole antenna has been verified by comparing prototypes with designed capacitors and ones with biased varactor diodes. The proposed antenna has presented the resonant frequency variations from 2.25 GHz to 2.42 GHz.

Design of a U-Type Planar UWB Antenna Composed of Monopole Pair (모노폴 쌍으로 구성된 U자형 평면 UWB 안테나 설계)

  • Lee, Ho-Sang;Jang, Jae-Sam;Jung, Young-Ho;Kim, Cheol-Bok;Kim, Jae-Hoon;Park, Seung-Bae;Lee, Mun-Soo
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.45 no.9
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    • pp.60-66
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    • 2008
  • In this paper, the CPW-fed Ultra-wideband antenna is designed and fabricated for UWB communications. To achieve ultra-wide bandwidth of the antenna, we propose the mutual coupling of two planar monopole antennas. The mutual coupling of monopole pair of the proposed antenna is optimized by adjusting the parameters, the widths of the planar monopoles and the space between two monopoles. Two UWB antennas with different horizontal sections of the CPW-fed monopole antenna are fabricated and measured to examine the mutual coupling effects on the monopole pair antenna. The measured result show that two antennas are satisfied with UWB communication band(3.1$\sim$10.6Ghz).

A Compact Folded Patch Antenna for Omni-Directional Radiation Patterns (전방향성 복사 패턴을 갖는 소형 평면 패치 안테나)

  • 서영훈;김태영;김명기;박익모;서용교;송기무
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.12 no.7
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    • pp.1094-1101
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    • 2001
  • The design of a compact folded patch antenna with moderately broad bandwidth is presented in this paper. The proposed antenna has radiation characteristics that are similar to the conventional monopole antenna. However, since this antenna is designed in a planar form, it has smaller size than that of a conventional monopole antenna. We have investigated the resonance frequency and bandwidth characteristics of the proposed antenna by changing the antenna design parameters. The proposed planar form of a monopole antenna in this paper has 1.17 GHz bandwidth with a matching circuit at the center frequency of 6.05 GHz.

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Structural Modification of Crossed Planar Monopole Antenna for ISM 2.45GHz/5.8GHz Dual Band Characteristics (ISM 2.45GHz/5.8GHz 이중대역 특성을 위한 십자형 평판 모노폴 안테나의 구조 변경)

  • Shim, Jaeruen;Chun, Joong-Chang
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.1
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    • pp.13-18
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    • 2015
  • This study presents the structure design of antenna to have the dual band characteristics in a desired frequency band through the structural modification of an antenna structure. For the experiment, a wideband crossed planar monopole antenna was used. The target frequency band was set to ISM 2.45GHz/5.8GHz. To give the properties, an additional antenna element was added to the crossed planar monopole antenna, which is a main body of the antenna. And then structural adjustment parameter was set to change the length(shape) of the antenna. Various simulations were conducted to find the dual band characteristics in the desired frequency band. The simulations brought forth the antenna bandwidth above the normal values for ISM 2.45GHz/5.8GHz. The structural adjustment parameter introduced in this study for structural modification of an antenna can be useful in developing an antenna featured with dual band(multiband) characteristics.

A Study on Parabolic Edge Planar Monopole Antenna for UWB Communication (초광대역(UWB) 통신을 위한 포물선 엣지 형태의 평면 모노폴 안테나에 대한 연구)

  • Chang, Tae-Soon;Hur, Jung
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.6
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    • pp.612-620
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    • 2008
  • In this parer, parabolic edge planar monopole antenna for UWB communication is presented. The antenna have broadband property structurally through planar monopole and ground which have parabolic edge. It is designed close to self-complementary structure as changing curvature of edge of monopole and ground. Monopole and ground of proposed antenna exist on coplanar plane, and excite as coaxial feeding. It used FR4 dielectric substrate of ${\varepsilon}_r=4.4$, and the size is $26{\times}31{\times}1.6mm$. Return loss is more than 10 dB in $3.1{\sim}10.6GHz$. Radiation pattern is about the same that of dipole antenna at all frequency. At measured result, max gain is $1.37{\sim}6.02dBi$ at E-plane.