대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2009년도 제40회 하계학술대회
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- Pages.1939_1941
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- 2009
Personal Area Network용 무선 송신부의 EVM을 만족하기 위한 I/Q mismatch의 영향 분석
An Analysis of the effect of I/Q mismatch on EVM in the transmitter of PAN
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Park, Yong-Kuk
(KETI) ;
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Lee, Min-Goo
(KETI) ;
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Kang, Jung-Hoon
(KETI) ;
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Yoo, Jun-Jae
(KETI) ;
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Kim, Hyeong-Seok
(Chung-Ang University)
- 발행 : 2009.07.14
초록
The modulation quality of the RF transmitter in a wireless communication system usually affects system performance and it mostly depends on both a nonlinearity and a distortion, from the intermodulation products and the I/Q mismatch such as I/Q amplitude error and a local phase error, respectively. This paper focused on how much the error vector magnitude(EVM) which describes the modulation accuracy changes according to the variation of the I/Q mismatch components at I/Q modulator. For this work, the equation for the EVM including the I/Q mismatch components can be induced and calculated in accordance with the variation of the I/Q mismatch components. Consequently, the effect of I/Q mismatch components on the EVM, which is required in the transmitter specification of Personal Area Network, can be clearly analyzed.