← 返回 JSSC 论文列表JSSC 2011第3期RF & Wireless90-nm CMOS
A Low-IFZero-IF Reconfigurable Analog Baseband IC With an IQ Imbalance Cancellati
一款支持低中频/零中频可重构的模拟基带IC，具备自动I/Q不平衡消除功能。
55 dB图像抑制比，0.4–2.4 GHz工作频率范围，1.2-V供电，4.5–6.2 mA电流消耗
模拟基带图像抑制低中频零中频软件定义无线电
▸自动I/Q不平衡消除方案：采用动态匹配技术实现无需校准的高达55dB的图像抑制比，解决了传统模拟接收机因PVT变化导致的I/Q失衡问题（方法创新）
▸低中频/零中频可重构架构：通过可编程滤波器实现0.3-30MHz(零中频)和0.2-6MHz(低中频)的宽频带覆盖，支持软件定义无线电的多模式切换（系统架构创新）
▸高能效电路设计：在1.2V电源下仅消耗4.5-6.2mA电流，采用90nm CMOS工艺实现1.1mm²的小面积，集成混频器、滤波器和可编程增益放大器（电路创新）
▸宽频带射频支持：工作频率范围0.4-2.4GHz，适应多种无线标准需求，突破传统双正交混频器的频率限制（性能创新）
Abstract
Tadashi Maeda , Member , IEEE, and Muneo Fukaishi , Member , IEEE
Abstract—A low-IF/zero-IF reconfigurable analog baseband IC
embodying an automatic I/Q imbalance cancellation scheme is
reported. The chip, which comprises a down-conversion mixer,
an analog baseband filter, and a programmable gain amplifier,
achieves a high image rejection of 55 dB without any calibration.
It operates over a wide radio frequency range of 0.4–2.4 GHz, and
has a cut-off frequency range of 0.3–30 MHz in zero-intermedia