I/Q imbalance of two-path ladder filters

被引：0

作者：

Kiss, P ^{[1
]}

Prodanov, V ^{[1
]}

机构：

[1] Agere Syst, Dept Wireless Circuits Res, Allentown, PA 18109 USA

来源：

2004 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL 1, PROCEEDINGS | 2004年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The frequency-(in)dependent I/Q imbalance of analog filters is a significant contributor to the tight noise budget of high-performance wireless applications, such as 802.1 la wireless LANs. This paper proposes a "frequency-dependent" statistical I/Q-imbalance analysis method for two-path filters, which can be configured for both low-IF and zero-IF architectures. A 7-pole complex band-pass ladder filter is analyzed, and it shows large image rejection ratio (rms IMR > 43.7 dB for 3 sigma). The same filter, but reconfigured as a pair of real low-pass filters, achieved about 13-dB less IMR. These results suggest a low-IF architectural choice to combat the I/Q imbalance of two-path filters.

引用

页码：1004 / 1007

页数：4

共 13 条

[1] Allen R., 1985, THESIS U TORONTO
[2] [Anonymous], 1999, IEEE Std. 802.11a
[3] Gabor D., 1946, J I ELEC ENGRS PART, V93, P429, DOI [10.1049/JI-3-2.1946.0074, DOI 10.1049/JI-3-2.1946.0074, 10.1049/ji-3-2.1946.0074]
[4] GINGELL MJ, 1975, THESIS U LONDON
[5] JANTZI SA, 1997, THESIS U TORONTO
[6] Complex low-pass filters
Kiss, P
Prodanov, V
Glas, J
[J]. ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2003, 35 (01) : 9 - 23
[7] PALASKAS G, 2003, IEEE CUST INT CIRC C, P21
[8] Razavi B, 2011, RF Microelectronics, V2nd
[9] Schaumann Rolf., 2001, DESIGN ANALOG FILTER
[10] SEDRA AS, IEEE ISCAS 85

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