• Title/Summary/Keyword: Microstrip Antenna

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400MHz Band Small Meander Microstrip Antenna (400MHz대 소형 미앤더 마이크로스트립 안테나)

  • Seo Yong Gun;Yoon Chun Su;Park Dong Kook
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • pp.5-8
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    • 2004
  • In this paper, a novel 400MHz band small meander microstrip antenna is proposed the shape of the proposed antenna is a waved meander microstrip with a pair rf short pins on th£ edge. the length of waved meander microstrip is $\lambda_g/4$ but it bends to half its size. Therefore, the total size of the proposed antenna is reduced to about 1/20 which is compared with a square patch antenna the simulated antenna gain is about 3dBi at 424MHz. the proposed antenna of -10dB impedance bandwidth is measured about $1.4\%$.

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Effect of Adjustable Antenna Substrate Thickness on Aperture-Coupled Microstrip Antenna

  • Somsongkul, T.;Lorpichian, A.;Janchitrapongvej, K.;Anantrasirichai, N.;Wakabayashi, T.
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1664-1667
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    • 2003
  • Aperture-coupled microstrip antenna is one type of microstrip antennas. This type of antenna has bandwidth wider than simple microstrip antenna. Herein, we use two substrates, that have the same dielectric constant 2.47 (PTFE-quartz) in which upper substrate is a rectangular patch. The microstrip patch is fed by a microstrip line which is printed on lower substrate, through an aperture or slot in the common ground plane of patch and microstrip feed. This antenna is analyzed by using Finite Difference Time Domain (FDTD) method the specific design frequency 10 GHz and match impedance is 50 ohms. The simulation results of its characteristics are input impedance, return loss, VSWR and radiation patterns respectively.

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Active Microstrip Antenna for Mobile Communication

  • Nakasuwan, J.;Rakluea, P.;Songthanapituk, N.
    • 제어로봇시스템학회:학술대회논문집
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    • pp.28-31
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    • 2004
  • This paper describe analysis active microstrip antenna with low noise amplifier at 900 MHz for mobile communication. The microstrip patch antenna is integrated with low noise amplifier on a permittivity 4.5 (Epoxy-FR4) and thickness of substrate 1.6 mm. Low noise amplifier is designed by using GaAs FETs. The analysis characteristics of antenna include return loss, input impedance, vswr, radiation pattarn, bandwidth and gain of antenna. Mesurement gain of antenna is shown 19.2435 dBi.

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Analysis of Microstrip Antenna Characteristics (마이크로스트립 안테나 특성해석)

  • 이상설
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.16 no.3
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    • pp.28-35
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    • 1979
  • In the microstrip antenna, insulator is filled only between its main radiator and the base conductor. In experiment, it is verified that the characteristic of microstrip antenna at 94 % of the operating frequency coincide with the characteristics of the Practical antenna, if its characteristics are analyged to the case that the entire space of the antenna is filled with the same insulator Experimental results support the theoretical validity.

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Analysis of the Rectangular Microstrip Antenna with Parasitic Element (Parasitic element를 갖는 구형 마이크로 스트립 안테나에 대한 해석)

  • Hong, Jae-Pyo;Cho, Young-Ki;Son, Hyon
    • Proceedings of the KIEE Conference
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    • pp.433-434
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    • 1988
  • Rectangular microstrip antenna with parasitic element is analyzed. Radiation admittance and equivalent circuit parameters between rectangular microstrip antenna and parasitic element are obtained by using equivalent ${\pi}$-network parameters of the slit in the wall of the parallel plate waveguide filled with homogeneous dielectric. The return loss is calculated and measured as a function of frequency with gap width 0.5mm between the patch and parasitic element. The experimental results are in fairly agreement with calculated values.

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Design of the Coaxially Fed Circularly Polarized Rectangular Microstrip Antenna Using the Genetic Algorithm (유전자 앨거리즘을 이용한 동축선 급전 원형 편파 마이크로스트립 안테나 설계)

  • 이동근;이상설
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.11 no.4
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    • pp.642-648
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    • 2000
  • We introduce a new application of the genetic algorithm for design of the coaxial fed circularly polarized rectangular microstrip antenna. The GA shows excellent results for the design of the microstrip antenna which have a very complex objective function including the input impedance, the effective loss tangent and the axial ratio. The objective function is derived from the cavity model, and the size and the feeding point are optimized by the genetic algorithm. The experimental results show good agreement with the simulated results.

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Design of Dual-band Microstrip Antenna for Wireless Communication Applications (무선통신을 위한 이중대역 마이크로스트립 안테나 설계)

  • Kim, Oug-Whoan
    • The Journal of the Korea institute of electronic communication sciences
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    • v.7 no.6
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    • pp.1275-1279
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    • 2012
  • In this paper, we design of dual-band microstrip antenna for wireless communication. We used IEEE 802.11a and Hyper LAN (5.725~5.825 GHz). The proposed antenna substrate is FR-4, size is $22mm{\times}23mm$, thickness is 1.6mm and used to CST Microwave Studio 2010 program. As a result the simulation has good result and good return loss below -10 dB at 5 GHz and 5.8 bandwidth.

Study on the Microstrip Antenna for Satellite DMB (S-DMB 수신용 마이크로스트립 안테나의 연구)

  • Park, Yong-Wook
    • The Journal of the Korea institute of electronic communication sciences
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    • v.4 no.2
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    • pp.82-86
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    • 2009
  • In this paper, we have studied on the microstrip antenna for satellite DMB from 2.63 to 2.65 GHz. Microstrip patch antenna was designed using HFSS simulation program and fabricated by FR4 substrate that has substrate thickness of 1.6mm, metal thickness of $17{\mu}m$, and dielectric constant of 4.4, respectively.

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A Design of Wideband Eccentric Annular Ring Microstrip Antenna (비동심 링 구조 광대역 마이크로스트립 안테나 설계)

  • 설동범;유영철;윤현보
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.12 no.3
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    • pp.370-377
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    • 2001
  • This paper proposed an eccentric annular ring microstrip antenna which has an asymmetric slot and a tuning stub for improving bandwidth and size of the circular microstrip patch antenna. The field characteristics of the eccentric annular ring microstrip antenna have been calculated by using the method of FDTD (finite difference time domain). The calculated results showed good agreement with the measured results. As a result of measurement, the antenna size and the bandwidth has been improved to that of 12.2 % and 4.8 % respectively, comparing to circular microstrip patch antenna.

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A study on the microstrip array antenna for KOREASAT DBS reception (KOREASAT 위성방송 수신용 마이크로스트립 어레이 안테나에 관한 연구)

  • 전주성;이성열;이윤현
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.21 no.9
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    • pp.2514-2525
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    • 1996
  • This paper presents the possibility of the satellite broadcasting reception as a means of microstrip antenna of the planar structure. The paper discusses the design of the optimal KOREASAT DBS(Direct Broadcasting Satellite) reception microstrip antenna. Experimental results for ta 16*16 array antenna of size 35*35cm are also described. Itsgain is over 28dB in the frequency range of 11.7~12.0GHz DBS band. The measured NHK broadcasting C/N ratio of 16816 array antenna is over 10dB in Pusan. It is expected that good picture quality of C/N .GEQ. 12dB can be obtained for domestic use if this microstrip antenna is used in KOREASAT broadcasting receiving system.

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