基于微机械系统（MEMS）圆盘谐振器工作时阻抗大、振荡频率高以及寄生电容大的特点,设计实现了一款用于驱动MEMS圆盘谐振器的宽带高增益、低噪声和低功耗跨阻放大器。该放大器引入低功耗宽带电流预放大和电流电压转换级输入技术,实现了...基于微机械系统（MEMS）圆盘谐振器工作时阻抗大、振荡频率高以及寄生电容大的特点,设计实现了一款用于驱动MEMS圆盘谐振器的宽带高增益、低噪声和低功耗跨阻放大器。该放大器引入低功耗宽带电流预放大和电流电压转换级输入技术,实现了宽带低功耗下低噪声性能。并结合改进型Cherry-Hooper反相器电压放大的电路结构以获得高增益带宽积,采用4～16译码控制电流、电压偏置技术,提高调试通过率及成品率。采用TSMC 0.18μm CMOS工艺流片后,测试结果表明,跨阻增益高达73 d BΩ,-3 d B带宽为163 MHz,功耗为21.6 m W,等效输入噪声电流谱密度为14 p A/Hz,芯片面积为1 538μm×680μm。展开更多
An inductorless wideband programmable-gain amplifier （PGA） for 60 GHz wireless transceivers is presented. To attain wideband characteristics, a modified Cherry-Hooper amplifier with a negative capacitive neu- traliz...An inductorless wideband programmable-gain amplifier （PGA） for 60 GHz wireless transceivers is presented. To attain wideband characteristics, a modified Cherry-Hooper amplifier with a negative capacitive neu- tralization technique is employed as the gain cell while a novel circuit technique for gain adjustment is adopted; this technique can be universally applicable in wideband PGA design and greatly simplifying the design of wideband PGA. By cascading two gain cells and an output buffer stage, the PGA achieves the highest gain of 30 dB with the bandwidth much wider than 3 GHz. The PGA has been integrated into one whole 60 GHz wireless transceiver and implemented in the TSMC 65 nm CMOS process. The measurements on the receiver front-end show that the re- ceiver front-end achieves an 18 dB variable gain range with a 〉 3 GHz bandwidth, which proves the proposed PGA achieves an 18 dB variable gain range with a bandwidth much wider than 3 GHz. The PGA consumes 10.7 mW of power from a 1.2-V supply voltage with a core area of only 0.025 mm2.展开更多
文摘基于微机械系统（MEMS）圆盘谐振器工作时阻抗大、振荡频率高以及寄生电容大的特点,设计实现了一款用于驱动MEMS圆盘谐振器的宽带高增益、低噪声和低功耗跨阻放大器。该放大器引入低功耗宽带电流预放大和电流电压转换级输入技术,实现了宽带低功耗下低噪声性能。并结合改进型Cherry-Hooper反相器电压放大的电路结构以获得高增益带宽积,采用4～16译码控制电流、电压偏置技术,提高调试通过率及成品率。采用TSMC 0.18μm CMOS工艺流片后,测试结果表明,跨阻增益高达73 d BΩ,-3 d B带宽为163 MHz,功耗为21.6 m W,等效输入噪声电流谱密度为14 p A/Hz,芯片面积为1 538μm×680μm。
基金Project supported by the National Science and Technology Major Projects of China(No.2012ZX03004007)the National Natural Science Foundation of China(Nos.JCYJ20120616142625998,61020106006,61076029,61222405,JCYJ20130401173110245)
文摘An inductorless wideband programmable-gain amplifier （PGA） for 60 GHz wireless transceivers is presented. To attain wideband characteristics, a modified Cherry-Hooper amplifier with a negative capacitive neu- tralization technique is employed as the gain cell while a novel circuit technique for gain adjustment is adopted; this technique can be universally applicable in wideband PGA design and greatly simplifying the design of wideband PGA. By cascading two gain cells and an output buffer stage, the PGA achieves the highest gain of 30 dB with the bandwidth much wider than 3 GHz. The PGA has been integrated into one whole 60 GHz wireless transceiver and implemented in the TSMC 65 nm CMOS process. The measurements on the receiver front-end show that the re- ceiver front-end achieves an 18 dB variable gain range with a 〉 3 GHz bandwidth, which proves the proposed PGA achieves an 18 dB variable gain range with a bandwidth much wider than 3 GHz. The PGA consumes 10.7 mW of power from a 1.2-V supply voltage with a core area of only 0.025 mm2.
