• Title, Summary, Keyword: CPW-fed

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A Compact CPW-fed Antenna for 2.4 GHz WLAN applications (2.4 GHz 무선랜 대역용 CPW 소형 안테나)

  • Choi, In-Tae;Shin, Ho-Sub
    • The Journal of the Korea institute of electronic communication sciences
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    • v.10 no.11
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    • pp.1245-1250
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    • 2015
  • In this paper, a compact CPW-fed antenna for 2.45 GHz band WLAN applications is presented. The proposed antenna which has a geometry of folded stub and slot is fabricated into an inexpensive FR-4 substrate that has a dielectric constant of 4.2 and a thickness of 1.0 mm with optimized parameters obtained by simulation, and then measured. From measured result, we confirmed available operation as antenna for WLAN applications by obtaining the return loss level of < -10 dB in the frequency band of 2.4-2.484 GHz.

Design of CPW fed antenna using high dielectric constant materials (고유전율 유전체를 이용한 CPW 급전 안테나의 설계)

  • 심성훈;강종윤;윤석진;윤영중;김현재
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.559-562
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    • 2000
  • In this paper, coplanar waveguide fed antennas (CPWFAs) insetting two slits to boundary of the square microstrip patch are presented. These slits play roles in not only lowering a resonant frequency but also fine-tuning for the proposed antenna together with open stub of CPW feed line. The CPWFAs were designed and manufactured using microwave dielectrics (Al,Mg)TaO$_2$ having high dielectric-constant ($\varepsilon$r=20). The return loss and input impedance of the CPWFAs were investigated in terms of the slit length and open stub length of CPW feed line. It is shown that a resonant frequency decreases as the slit length increases.

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Design and Implementation of CPW-Fed UWB Monopole Antenna (CPW 급전 방식을 이용한 UWB 모노폴 안테나 설계 및 구현)

  • Yu, Ju-Bong;Jeon, Jun-Ho;An, Chan-Kyu;Kim, Woo-Chan;Yang, Woon-Geun
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.21 no.2
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    • pp.218-223
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    • 2010
  • In this paper, a novel CPW(Coplanar Waveguide)-fed UWB(Ultra Wide Band) antenna is designed, implemented, and measured for UWB communications. CPW-fed planar antenna has advantages of wide-bandwidth, low-cost and easy interaction with radio frequency front end circuitry. We have used HFSS(High Frequency Structure Simulator) of Ansoft which is based on the FEM(Finite Element Method) to simulate the proposed antenna. FR-4 substrate of thickness 1.6 mm and relative permitivity 4.4 is used for implementation. The proposed antenna showed VSWR(Voltage Standarding Wave Ratio)${\leq}2$ for the frequency band from 3.1 GHz to 10.6 GHz which is used for ultra wide band communication. Measured peak gains are 2.61, 4.95, 2.89, 7.35 dBi at 3, 6, 8, 11 GHz, respectively.

Design of a CPW (Coplanar Waveguide) fed dual-band slot antenna (CPW 급전 이중대역 슬랏 안테나 설계)

  • 김봉준;오경진;최재훈
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.215-218
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    • 2002
  • In this paper, a dual-frequency printed slot antenna loaded with an open-ring conducting strip and capacitively fed by a coplanar waveguide(CPW) is designed. The designed antenna has a bandwidth of 240㎒(1690㎒-1930㎒) at PCS frequency band and of 160㎒(2380㎒-2540㎒) at WLAN frequency band. In both frequency ranges, pattern and gain requirements are satisfied. The commercial software, IE3D, was used to design slot antenna. The predicted characteristics along with measured data are presented for verification purpose.

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A Simple CPW-Fed UWB Antenna Design

  • Park, Sang-Yong;Oh, Seon-Jeong;Park, Jong-Kweon
    • Journal of electromagnetic engineering and science
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    • v.10 no.1
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    • pp.13-17
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    • 2010
  • In this paper, we have described a simple CPW-fed UWB antenna for wireless UWB communication. The proposed antenna consists of two symmetrical strips having two steps and CPW feeding. Two techniques(symmetrical structure, two steps) are used to produce good low-dispersion and impedance matching. The proposed UWB antenna has an omni directional radiation pattern, compact size, low dispersion, and low cost.

CPW Fed Ultra Wide Band Slot Antenna (초광대역 CPW 급전 슬롯안테나)

  • 김기수;박동국
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.14 no.7
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    • pp.663-668
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    • 2003
  • In this paper, a CPW fed slot antenna with novel broadband feed structure is presented. To enhance the impedance bandwidth of the slot antenna we proposed the broadband feed structure of new bow-tie slot which is combined with four λ/2 rectangular radiation slot and inductively coupled. The measured 10 dB impedance bandwidth is about 60 %(5.2∼9.4 GHz) and the simulated antenna gain is about 6 dBi at 7.36 GHz.

Design and Manufacture of CPW-fed Two Arc-shaped Antenna for WLAN Applications (WLAN 시스템을 위한 두 개 원호 형태 안테나의 설계와 제작)

  • Yoon, Joong-Han
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.4
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    • pp.765-771
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    • 2015
  • In this paper, a dual-band arc-shaped monopole antenna for WLAN(Wireless Local Area Networks) applications. The proposed antenna is based on CPW-fed structure, and composed of two-arc shaped of radiating patch and ground plane. To obtain the optimized parameters, we used the simulator, Ansoft's High Frequency Structure Simulator (HFSS) and found the parameters that greatly effect antenna characteristics. Using optimal parameters, the antenna is fabricated. The numerical and experiment results demonstrated that the propnosed antenna satisfied the -10 dB impedance bandwidth requirement while simultaneously covering the WLAN bands. And measured results of gain and radiation patterns characteristics displayed determined for opeating bands.

A Broadband Monopole Antenna with Ring Loop By Modified Ground Plane (접지면 변형에 의한 원형 루프를 갖은 광대역 모노폴 안테나)

  • Lee, Hyeon-Jin;Lim, Yong-Moo
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.61 no.3
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    • pp.149-152
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    • 2012
  • In this paper, a wideband monopole antenna with ring loop by modified ground plane is presented. The proposed antenna consist of monopole antenna, ring loop by ground plane. This antenna is fed CPW-fed and wide slot antenna of a novel structure for broadband characteristics is proposed. To enhance the impedance bandwidth of the wide slot antenna, we proposed the wide slot structure with CPW-fed which is combined with four ${\lambda}/2$ rectangular radiation modified monopole and inductively coupled. The measured impedance bandwidth is about 2.5 GHz(3.65~6.15 GHz) then less -10 dB.

Design of Broadband CPW-Fed Square Slot Antennas (CPW 급전 광대역 사각 슬롯 안테나 설계)

  • Choi, Soon-Shin;Kim, Joon-Il;Jee, Yong
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.42 no.11
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    • pp.107-115
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    • 2005
  • This paper presents the structure of a broadband coplanar waveguide(CPW) fed square slot antenna with a impedance bandwidth tuning patch. The designing method of the antenna suggests that two resonant frequencies are excited as a dual-frequency dipole antenna following the dimensions of the square slot. In other words, the lower resonant frequency mainly depends on the slot width and the higher one its length. A CPW fed square slot antenna with a impedance tuning patch was measured to $20GHz^\~33GHz$, $50\%$, VSWR=2 impedance bandwidth by adjusting the dimensions of the tuning patch when the slot length had $70\%$ of its width. This result shows that a medical CPW fed antenna is easily implemented with a simple square slot structure including a bandwidth tuning patch in the center.

Sectorial Form UWB Antenna with a CPW-fed Uni-Planar (CPW 급전 단일 평면 부채꼴형 UWB 안테나 설계 및 제작)

  • Kim, Nam;Son, Gui-Bum;Park, Sang-Myeong
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.18 no.3
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    • pp.305-314
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    • 2007
  • In this paper, we suggested a CPW-fed UWB antenna with uni-planar sectoral structure. The area where radiation device face ground is designed to have the shape of tapered slot based on exponential function. We modified a rectangular bow-tie dipole structure antenna and thus formed a multi-resonant mode. From this, we expanded the impedance bandwidth and made a feature satisfying VSWR of less than 2 between $3.1\sim10.6GHz$. The test result showed that the return loss less than -10 dB was met in the full-band UWB system and maximum gain of $0.9\sim3.1dB$ was made with the half-power beamwidth of $40.1\sim89.9^{\circ}$ on XY plane(Theta, $Phi=90^{\circ}$) and the full band. By using CPW-fed structure with no ground on the back of the substrate, the suggested antenna is easy to design and its miniaturization is also possible.