• Title, Summary, Keyword: 다중 대역 안테나

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A Study on Dual-Band and Multi-Band Slot Loaded Patch Antenna (이중 및 다중 대역 Slot Loaded 패치 안테나에 관한 연구)

  • Shin, Ho-Seop
    • Journal of Digital Contents Society
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    • v.7 no.1
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    • pp.41-45
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    • 2006
  • In this paper, we introduced the dual-band and multi-band slot loaded patch antenna for multi services. This antenna has the characteristic of dual-band and multi-band antenna by 4 slots nearly located in the edges of a patch. By changing the number and location of probe, the width and length of slot, and the distance between slot and the edge of patch, we studied the performance of dual-band and multi-band characteristic.

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A Study on the Multi-band MIMO Antenna with MD material for Next-generation Mobile Communication (MD 매질을 이용한 차세대 이동통신 단말기용 다중대역 MIMO 안테나 설계 및 구현)

  • Kim, Woo-Su;Yoon, Cheol;Lee, Won-Jong;Kang, Suk-Youb;Park, Hyo-Dal
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.4
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    • pp.983-990
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    • 2010
  • In this paper, we designed and implemented the MIMO antenna for LTE(Long Term Evolution), supposed to be a next generation communications network, DCS1800, DCS1900 and WCDMA. Using conventional monopole antenna with MD material results in good characteristics, miniaturization for LTE band and as well as broadbanding for DCS, WCDMA band. The performance of the proposed MIMO antenna shows VSWR < 2, under -10 dB of isolation and the gain is -1.66 ~ 1.33 dBi for LTE(Long Term Evolution), DCS1800, DCS1900 and WCDMA, which has omnidirectional radiation pattern.

A Study on Multi-band Antenna for Mobile using Coupling Feeding (커플링 급전을 이용한 모바일용 다중대역 안테나에 관한 연구)

  • WANG, Cheng;YOON, In-seop;HWANG, Sun-gook;YAN, Xiao-jia;PARK, Hyo-Dal
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.7 no.4
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    • pp.188-194
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    • 2014
  • In this paper, an antenna which has quad band in LTE (0.746 ~ 0.798 GHz), GSM(0.824 ~ 0.960 GHz), DCS(1.71 ~ 1.88 GHz), WCDMA(1.91 ~ 2.17 GHz) is proposed. An antenna size is $122mm{\times}50mm{\times}0.8mm$ on FR4(${\epsilon}_r=4.4$) ground substrate. In the proposed antenna, branch line is applied to the conventional PIFA architecture to achieve multi-bandwidth. Coupling power supply is applied for a wide bandwidth. Result of the measurement is as follows. When the low frequency, the antenna presents gain of 0.93 ~ 1.92dBi, and radiation efficiency of 49.60 ~ 76.35 %, and When the high frequency, gain is 2.19 ~ 4.66dBi, and radiation efficiency is 60.40 ~ 80.01 %, and with a VSWR < 2 (${\leq}-10dB$)measurement results for standard satisfies all band. Judging from the result, proposed multiband antenna is expected to be applied. B4G mobile terminals since the antenna shows an outstanding performance.

Design of a Multiband Antenna for LTE System (LTE 시스템을 위한 다중 대역 안테나 설계)

  • Hong, Youngtaek;Baek, Jisoo;Choi, Jaehoon
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.25 no.1
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    • pp.19-24
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    • 2014
  • In this paper, a multiband LTE antenna satisfying LTE octa-band is proposed. The proposed antenna consists of a modified PIFA structure and a folded monopole which has the height of 4 mm. Each parts operates at lower and upper LTE band. Measured bandwidth(6 dB return loss) was 118 MHz(870~988 MHz) at the lower band and 1,107 MHz(1,650~2,757 MHz) at the upper band. The proposed antenna has a omni-directional radiation pattern and measured peak gains were 3.21 dBi at the lower band and 4.19 dBi at the upper band, respectively. The proposed antenna is expected to be utilized for future LTE-advanced system.

Fractal Microstrip patch Antenna Design and Fabrication for WLAN/WiMax Applications (WLAN/WiMax용 프랙탈 마이크로스트립 패치 안테나설계 및 제작)

  • Kim, Kab-Ki
    • The Journal of Advanced Navigation Technology
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    • v.15 no.6
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    • pp.1008-1014
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    • 2011
  • In this paper, multi-band fractal microstrip patch antenna which is possible for WLAN band and WiMax band is designed and made. For multi-resonance of developed antenna, resonance frequency, impedance matching, polarity and reflection pattern can mad perfectly, then to make satisfied multi-independent frequency three kind of half circle fractal patch is inserted. In the situation continuously happening half circle in designed structure, antennas one of half-circle band is shown.

Design of CPW-Feed Multi-Band Monopole Antenna for Next Generation WLAN Systems (차세대 WLAN을 위한 CPW 급전 다중대역 모노폴 안테나 설계)

  • Choi, Yong-Seok;Seong, Hyeon-Kyeong;Rho, Jung-Kyu
    • Journal of Satellite, Information and Communications
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    • v.9 no.1
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    • pp.38-44
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    • 2014
  • In this paper, we designed a multiband monopole antenna for next-generation WLAN system. In conventional WLAN system, UWB antennas were used together, and, because the radiation occurs in different parts depending on the antenna structure, it has the disadvantage of having an unstable impulse response characteristic due to dispersion characteristics. Although a UWB antenna that has suitable radiation pattern for WLAN band, it does not have good impedance matching and has severe echo. Therefore, in this paper, a monopole antenna was designed by using CPW power feed so that various impedances can be easily implemented when designing an antenna and more parameters can be derived that can be used for design for optimal performance.

Design of Life-jacket Integrated Multiband Antenna for Rescuing Distressed People (조난자의 구조를 위한 구명조끼 장착 다중대역 안테나 설계)

  • Park, Yong-Jin;Yang, Gyu-Sik;Jung, Sung-Hun;Park, Dong-Kook
    • Journal of Navigation and Port Research
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    • v.39 no.6
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    • pp.473-478
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    • 2015
  • In this paper, we suggest a flexible multiband antenna which can be equipped on an inflatable life-jacket. The antenna can send distress alert and location data of survivors to assist rescue operation when crew or people are in distress. The antenna operate in three frequency bands such as VHF-DSC band (156MHz), COSPAS-SARSAT band (406MHz) and GPS band (1,575MHz). The GPS band is implemented with a square ring-slot planar antenna, the COSPAS-SARSAT band and the VHF-DSC band antenna is implemented by monopole type. In order to give flexibility of substrate to be equipped on life-jacket, FR4-epoxy substrate of thickness 0.2mm is used to make antenna. The reflection coefficients of the fabricated antenna are -8.8dB, -20.4dB and -10.7dB at each bandwidth like VHF-DSC, COSPAS-SARSAT and GPS band, respectively, when people are wearing life-jacket integrated multiband antenna.

Multi-band Folded Monopole Internal Antenna for Mobile Handset Applications (이동통신 단말기용 다중대역 폴디드 모노폴 내장형 안테나)

  • Kang, Yoon-Ho;Rhyu, Han-Phil;Kong, Ki-Hyun;Park, Myun-Joo;Cheong, Young-Seek;Lee, Byung-Je
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.6 no.2
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    • pp.119-125
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    • 2007
  • In this paper, a multi-band folded planar monopole internal antenna for mobile handset applications is proposed. The proposed antenna has multi-resonances, which is different from a conventional folded monopole antenna, and it provides a wide bandwidth at high frequency bands. The measured impedance bandwidth (VSWR < 3) is 180 MHz and 1880 MHz in lower and higher frequency bands, respectively. The proposed antenna can effectively cover most wireless communication bands including CDMA, GSM, GPS, DCS, PCS, and W-CDMA, WiBro and S-DMB.

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A Study on Fractal Antenna Design and Fabrication for Multi-Band Applications (다중대역용 프랙탈 안테나의 설계 및 제작에 관한 연구)

  • Kim, Kab-Ki
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.11 no.5
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    • pp.81-86
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    • 2011
  • In this paper, fractal microstrip patch antenna in a semicircle, by designing a multi-resonant antenna was improved by bandwidth issues, including the IEEE 802.11 wireless LAN and IEEE802.16e-band mobile WiMax specification both of which can contain non-directional antenna design and measured characteristics of the antenna for multi-resonant resonant frequency, impedance matching, radiation pattern, brilliantly polarity and multiple independent frequencies that can be controlled to meet the three semicircular wireless communications by inserting fractal patch antenna was designed.

Design of a multi-band antenna for a mobile communication terminal with reconfiguration characteristic (재구성 특성을 갖는 다중대역 이동통신 단말기용 안테나의 설계 및 제작)

  • Im, Dae-Soo;Kim, Ki-Rae;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.772-779
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    • 2015
  • In this paper,a reconfigurable multi-band mobile antenna with switching line for LTE band 13, GSM, K-PCS, WCDMA band. The proposed antenna is planar strip line design and composed of stub shorted to the ground plane and two switching line for proposed band operation. To obtain the optimized parameters, we used the simulator, Using the obtained parameters is fabricated. The numerical and experiment results demonstrated that the proposed antenna satisfied the -6 dB impedance bandwidth requirement while simultaneously covering when the state of sw1 and sw2 on for LTE band 13, the state of sw1 off and sw2 on for GSM, K-PCS, the state of sw1 off and sw2 off for WCDMA. Respectively and characteristics of gain and radiation patterns are determined for a reconfigurable multi-band mobile terminal.