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- W2073593929 abstract "본 논문에서는 코프래너 도파관(CPW)으로 급전된 소형 슬롯 안테나 설계방법에 대하여 연구하였다. 폭이 좁은 직사각형 슬롯에 삽입된 T형 튜닝 스트립의 위치, 폭, 길이를 조절하여 슬롯 안테나와 CPW 급전선이 임피던스 정합되도록 하였다. 슬롯의 길이 변화로 공진 주파수를 조절할 수 있고, 슬롯을 구부려서 소형화할 수 있다. 소형 슬롯 안테나의 공진 주파수와 임피던스 특성이 반 파장 슬롯 안테나와 비교하여 큰 변화가 없으므로 소형화 설계가 용이하다. 2.45 GHz ISM 대역용으로 소형 슬롯 안테나를 설계하고, FR4 기판(비유전율=4.4, 두께 0.8 mm) 상에 제작한 후 특성을 실험하였다. 측정된 결과들은 시뮬레이션과 잘 일치하여 본 연구의 타당성을 검증하였다. 제작된 소형 슬롯 안테나의 정재파비(SWR)가 2이하인 대역폭은 200 MHz(=2.32-2.52 GHz)로서 ISM 대역(2.4-2.48 GHz)용으로 적합하다. 측정된 복사패턴은 모노폴과 유사하게 E-면에서 8자형 지향성 패턴을 보이고, H-면내에서는 거의 무지향성 패턴을 보이며, 이득은 2.0 dBi 이므로 무선 랜, RFID, 휴대단말기용 안테나 등으로 응용이 적합할 것으로 기대된다. In this paper, a design method for a compact slot antenna fed by a coplanar waveguide (CPW) is studied. A T-shaped tuning stub is inserted inside a narrow rectangular slot and the slot is impedance matched to the CPW feedline by adjusting the width, length, and position of the stub. The resonance frequency is adjustable by the slot length and the antenna size can be reduced by bending the slot. The resonance frequency and impedance matching property of the compact slot antenna are similar to those of the half-wavelength slot antenna, which enables one to design compact antenna of this type with ease. A compact slot antenna for 2.45-GHz ISM band is designed, fabricated on an FR4 substrate (dielectric constant of 4.4 and thickness of 0.8 mm), and experimentally tested. The measured results agree well with the simulations, which confirms the validity of this study. The fabricated compact slot antenna shows an impedance bandwidth of 200 MHz(2.32-2.52 GHz) for a VSWR < 2, which is suitable for 2.45-GHz ISM band (2.4-2.48 GHz). The measured radiation patterns show <TEX>${infty}$</TEX>-shaped directional pattern in the E-plane and nearly omni-directional pattern in the H-plane with a peak gain of 2.0 dBi, which are similar to those of a monopole antenna. The proposed antenna is expected to be suitable for the applications as antennas for WLAN, RFID, and mobile handset." @default.
- W2073593929 created "2016-06-24" @default.
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- W2073593929 date "2012-07-31" @default.
- W2073593929 modified "2023-09-27" @default.
- W2073593929 title "CPW-fed Compact Slot Antenna Matched by T-shaped Stub" @default.
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- W2073593929 doi "https://doi.org/10.5762/kais.2012.13.7.3140" @default.
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