• Title/Summary/Keyword: microstrip antenna

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Design of Inset Microstrip Patch Antenna for Wireless Power Transmission at 2.45 GHz

  • Pradhan, Sajina;Noh, Sun-Kuk;Choi, Dong-You
    • Journal of information and communication convergence engineering
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    • v.10 no.2
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    • pp.123-128
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    • 2012
  • In communication systems, there are various types of microstrip antenna that can be used for many applications. This paper mainly focuses on the simple design of an inset rectangular microstrip patch antenna to operate at a frequency of 2.45 GHz for rectenna design. The study involves using an high frequency structure simulator to design the antenna dimensions and to determine its performance. This antenna is based on a thickness of 1.6 mm flame retardant 4 (FR-4) substrate having a dielectric constant of approximately 4.7, an inset feed, and a ground plane. After simulation, the antenna performance characteristics such as its return loss, voltage standing wave ratio, gain, and radiation pattern were obtained and compared with the fabricated measured antenna.

The Design of microstrip line-probe feeding patch array antenna (마이크로스트립 라인-프로브 급전 패치 배열 안테나의 설계)

  • 박종렬;이윤경;윤현보
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • 2002.11a
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    • pp.285-289
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    • 2002
  • In this paper, microstrip line-probe feeding patch array antenna with center frequency 5.8㎓ is designed and manufactured. The microstrip line - probe feeding structure has broadband characteristic and be able to modify the array structure for improving antenna gain. In this result, microstrip line-probe feeding patch array antenna has 17.6% bandwidth and 8㏈i antenna gain, respectively.

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Optimized Design of T-Shaped Microstrip Antenna with Various Dimensions (T형 마이크로스트립 안테나의 면적 비에 따른 최적 설계)

  • Kim, Jin-Bok;Lee, Joong-Geun
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.47 no.5
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    • pp.53-59
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    • 2010
  • There are various types of antenna fed method; coaxial probe, coupling, parasitic elements, and impedance matching. In this paper, the fed method of the proposed antenna is microstrip line type. The high frequency structure simulator (HFSS) is used to analyze the characteristics of the T-shaped microstrip antenna with various patch dimensions. In comparison with the basic microstrip antenna, this proposed T-shaped microstrip antenna with 40.38 % of patch dimensions has the optimum characteristics of resonant frequency, return loss, and radiation pattern at 2.0 GHz band.

A Corner-Truncated Equilateral-Triangular Microstrip Antenna and Its Applications for Reconfigurable Antennas with Polarization Diversity (모서리가 잘린(Corner-cut) 구조를 가진 정삼각형 마이크로스트립 안테나와 편파 변환 재구성 안테나로의 응용)

  • Sung, Young-Je
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.10
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    • pp.1159-1165
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    • 2008
  • In this paper, a single-feed equilateral-triangular microstrip antenna with truncated corners is used for achieving diverse radiation polarization. The proposed antenna is excited by a microstrip line, which is place parallel to an oblique side of the equilateral-triangular patch. Depending on whether the three identically-sized comers of the triangular patch are cut or not, the equilateral-triangular microstrip antenna shows linear polarization(LP) or left-hand circular polarization(LHCP) or Tight-hand circular polarization(RHCP). Based on the equilateral-triangular microstrip antenna with truncated corners, a novel reconfigurable microstrip antenna with switchable polarization sense is also proposed. The proposed reconfigurable antenna has a simple structure, consisting of a corner-truncated triangular patch, a small triangular conductor, and a microstrip line. Using a biased PIN diode between the patch and the small triangular conductor, it can produce LP or RHCP according to bias voltages. From the measured results, low cross polarization level when operated in the linear state and good axial ratio in the circular state are observed.

Design and Fabrication of a Broadband Microstrip Slot Antenna with a Fork-shaped Feedline (포크모양의 급전선로를 갖는 광대역 마이크로스트립 슬롯 안테나 설계 및 제작)

  • 문영길;김흥수
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.41 no.8
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    • pp.87-92
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    • 2004
  • In this paper, a microstrip slot antenna with a fork-shaped feedline is designed and fabricated. To obtain a broadband characteristic of a wide slot antenna a feedline is transformed into a shape of a fork, and a size of the slot and offset - length is varied. As the characteristics of the slot antenna as the function of design parameters are analyzed, a broadband microstrip slot antenna is designed. The microstrip slot antenna with a fork-shaped feedline is fabricated and its measured bandwidth is from 1.65 GHz to 6.20 GHz for VSWR$\leq$2.

Broadband polarimetric Microstrip Antennas for Space-borne SAR

  • Hong, Lei;Qunying, Zhang;Guang, Fu
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.465-470
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    • 2002
  • A novel phased array antenna system for space-borne polarimetric SAR is proposed and completed in this paper.The antenna system assures polarimetric and multi-mode capability of SAR. It has broadband, high polarization isolation and high port to port isolation. The antenna system is composed of broadband polarimetric microstrip antenna, T/R modules and multifunction beam controller nit. The polarimetric microstrip antenna has more than 100MHz bandwidth at L-band with -30dB polarization isolation and high port to port isolation. The microstrip element and T/R module's structure and characteristics, the subarray's performances measuring results are presented in detail in this paper. A design scheme on beam controller of the phased array antenna is also proposed and completed, which is based on Digital Signal Processing (DSP) chip -TMS320F206. This beam controller unit has small size and high reliability compared with general beam controller. In addition, the multifunction beam controller unit can acquire and then send the T/R module's working states to detection system in real time.

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A Design and Fabrication of Microstrip Patch Antenna for PCS band and IMT-2000 band (PCS 대역과 IMT-2000 대역 겸용 마이크로스트립 패치 안테나의 설계 및 제작)

  • Lee, Won-Hui;Choi, Kyung-Sik;Hur, Jung
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.39 no.2
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    • pp.108-116
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    • 2002
  • In this paper, to improve bandwidth of microstrip antenna, we discussed the patch structure using dual patch and probe feed. To provide PCS service and IMT-2000 service simultaneous, a microstrip patch antenna needs impedance bandwidth of 22%. We propose wide-band microstrip path antenna without complexity. To analyze characteristics of microstrip patch antenna, we used Ensemble of commercial software. The microstrip patch antenna was designed, fabricated, and tuned. The result was that 500 ㎒(25.5%) of impedance bandwidth for VSWR 2,430 ㎒(21.9%) of impedance bandwidth for VSWR 1.5. The microstrip patch antenna has side lobe of -14 dB. The front to back ratio is 20 dB overall. The measured gain of the microstrip patch antenna is 5.2 dBi.

Design of Broadband Microstrip Patch Antenna for Mobile Communications

  • Kim, Jang-Wook;Jeon, Joo-Seong
    • Journal of the Korea Society of Computer and Information
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    • v.22 no.4
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    • pp.67-74
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    • 2017
  • The objective of this paper is to design broadband microstrip patch antenna for mobile communication service. The enhanced features were confirmed and proved by comparing the proposed antenna with the antennae that have been reported in the relevant literatures. The experimental results show that the impedance bandwidth(VSWR ${\leq}2$) of 19.6%(fo=1,920MHz) and the peak gain of 5.53dBi(at 1,900MHz) were obtained by the mobile communication service frequency band. The proposed antenna had the impedance bandwidth of about 3.1% larger than that of the reported microstrip antenna.

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
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    • v.11 no.5
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    • pp.773-781
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    • 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.

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CPW-fed to CPS Dipole Antenna of Microstrip Tapered Balun with Triangular Loop Director

  • Lee, Hyeonjin
    • Journal of Electrical Engineering and Technology
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    • v.9 no.4
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    • pp.1365-1368
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    • 2014
  • A CPW-fed to CPS dipole antenna of triangular loop director by microstrip tapered balun is proposed for dual and wide band operations, in this paper. The proposed antenna is consisted of a CPW-fed to CPS transform, microstrip tapered balun element, CPS dipole driver and triangular loop director. A dual and wide bandwidth of the proposed dipole antenna is realized by introducing the triangular loop director and taper matching element. The operated frequency bandwidth is 1GHz (2.14~3.14 GHz) and 1.9 GHz (4.6~6.5 GHz) to return loss criterion of less than 10 dB. The measured return loss of the proposed antenna showed good results of the dual and wide band operating frequency and the radiation pattern. The proposed antenna is able to support WLAN wireless communications applications.