• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.10
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• pp.1427-1434
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• 2013

In this paper, triple band mobile chip antenna for DCS(1.71~1.88GHz) / PCS(1.75~1.87GHz) / UPCS(1.85~1.99GHz) on PCB Layout is designed. To analyze the characteristics of the designed antenna, we designed and measured Single, Dual, Triple Band antenna. The designed antenna was fabricated and measured using vector network analyzer in LTK(Laird Technologies Korea). Triple and wide band characteristic could be realized the measured bandwidth(V.S.W.R<2.0) of designed antenna operated in the band of 1.71GHz~1.99GHz. This antenna has a small size of about $19mm{\times}4mm{\times}1.6mm$, narrow bandwidth which is a defect of chip antenna is improved. And its experimental results were a good agreement with simulation performance.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.681-684
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• 2008

In this paper, triple band mobile chip antenna for DCS($1.71{\sim}1.88GHz$) / PCS($1.75{\sim}1.87GHz$) / UPCS($1.85{\sim}1.99GHz$) on PCB Layout is fabricated. As designed and fabricated antenna is loaded PCB layout, that plate a both side at two independence patterns(upper & lower) to reduce the size and a capacitor for DCS, PCS, UPCS band is proposed. The antenna has a small size of about $19mm{\times}4mm{\times}1.6mm$, narrow bandwidth which is the defect of chip antenna is improved. Bandwidth of fabricated antenna to VSWR less than 2 is satisfied and all bandwith is acquired 15.1 % at $1.71GHz{\sim}1.99GHz$.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.13 no.7
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• pp.1261-1266
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• 2009

In this paper, triple band mobile chip antenna for DCS(1.71${\sim}$1.88GHz) / PCS(1.75${\sim}$1.87GHz) / UPCS(1.8S${\sim}$1.99GHz) on PCB Layout is designed. To analyze the characteristics of the designed antenna, we used commerical simulation tool(HFSS). Triple and wide band characteristic could be realized the measured bandwidth(V.S.W.R<2.0) of the designed antenna operated in 1.71GHz${\sim}$1.99GHz. The size of the designed antenna is about 19mm${\times}$4mm${\times}$1.6mm, narrow bandwidth which is a defect of chip antenna is improved. And its experimental results were a good agreement with simulation performance.

• Proceedings of the KAIS Fall Conference
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• 2005.05a
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• pp.163-165
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• 2005

본 논문에서는 GSM/DCS/USPCS 대역에서 사용할 수 있는 PIFA 형태의 내장형 안테나를 설계하고 이를 제작하였다. 이 안테나는 제한된 공간에서 기본 PIFA에 적절한 슬릿을 구성하여 트리플 밴드를 형성 시켰으며, GSM 대역에서 Maximum Gain -3.25dB$\~$6.37dB, DCS 대역에서 Maximum Gain -0.46dB$\~$2.95dB의 결과를 얻었다. 방사패턴 또한 전 방향성에 가까운 특성을 가지고 있으며 현재 GPRS용 휴대폰에 적용시키고 있다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.8 no.3
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• pp.81-86
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• 2008

The paradigm of information & communication is rapidly changed into ubiquitous environment based electromagnetic wave, and antenna technology in the wireless ubiquitous communication is remarkably developed. Mini chip antenna has its within small card compared to the external AP antenna. Designed and Fabricated WLAN antenna has a broadband characteristics of 2.4~2.5GHz and 4.9~5.85GHz, and can be used triple mode of IEEE 802.11.a,g.b, and it has comparatively a constant performance in the dual frequency band.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.1
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• pp.103-107
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• 2009

In this paper, we designed and implemented a dual band chip antenna for WLAN, which contains within the small LAN card contrary to the enternal AP(Access Point) antenna. Limiting about the antenna size, we used dielectrics of high permittivity. Totally considering problems of demand-supply, price and characteristics, we used that relative dielectrics of ceramic is 9.8 and the thickness is 3.5mm and 5mm. Ceramic antenna can be used not only triple mode of IEEE 802.11.a,g and b but also broadband. The frequency bands have wideband characteristics of 2.4~2.5GHz and 4.9~5.85GHz and relatively constant performance.

• Journal of IKEEE
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• v.8 no.1 s.14
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• pp.86-95
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• 2004

In this paper, we designed, fabricated, and measured antenna results consisting of previous research, that can handle from wireless using-LAN U-shaped slot antenna of HiperLAN bandwidth to ISM band of HiperLAN 1/2 & 5 GHz bandwidth. We presented a new model that structuresof basic U-shaped slot added the same thing twice.After the foam layer is inserted between ground plane and substrate, we got enough bandwidth for VSWR<1.5. The antenna gain was $6.27{\sim}9.82dBi$. The radiation pattern got a stable pattern in frequency bandwidth.