Design methodology for controlled-Q resonators in OTA-based filters
Design methodology for controlled-Q resonators in OTA-based filters
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基于 OTA 的滤波器中受控 Q 谐振器的设计方法
DOI：
10.1109/rfic.2015.7337782
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Farine
中科院分区：
文献类型：
--
作者：
Saeed Ghamari;G. Tasselli;C. Botteron;P. Farine
提出了一种基于运算放大器（OTA）的有源滤波器高品质因数谐振器的设计方法。谐振器的品质因数作为其主要指标，被转化为OTA的要求。此外，OTA的有限输出电阻和内部极点的影响进行了研究。结果提供了一个有用的图表和一个简单的方法来设计具有所需的品质因数的谐振器。该设计方法已通过制造一个谐振频率为8 MHz，品质因数为10左右，使用UMC 180 nm CMOS工艺的谐振器进行了验证。
This paper presents a design methodology for high quality factor resonators based on operational transconductance amplifier (OTA) employed in active filters. The quality factor of a resonator, as its main specification, is translated to the requirements of the OTA. Moreover, the effects of the OTA's finite output resistance and internal poles are investigated. The results provide a useful chart and a simple methodology to design a resonator with a desired quality factor. The design methodology has been validated by fabricating a resonator with 8 MHz resonance frequency and a quality factor of around 10 using UMC 180-nm CMOS technology.