at the V_PTAT pin (pin 15) which is proportional to the temperature of the chip. It is powered separate from VCC via the VCC_PTAT pin (pin 16). The PTAT voltage source generates a …
Temperature compensated ring oscillator based VCO
2022年5月1日 · A proportional to absolute temperature (PTAT) current is added to the current that controls the oscillating frequency of the oscillator reducing the frequency drift across …
请教：VCO的尾电流源噪声 - Analog/RF IC 设计讨论 - EETOP 创芯 …
2012年4月2日 · 最近设计一个VCO，尾电流源是由bandgap电路产生的PTAT电流，当用电流镜时，即电流 镜的输入电流为理想电流源，相噪比较好，当将bandgap电路整合到一起时，delta f …
A 6.5–8.1GHz Temperature-Compensated LC-VCO - IEEE Xplore
A temperature-compensation scheme is presented for LC-VCO. With a proportional-to-absolute-temperature (PTAT) voltage and a complementary-to-absolute-temperature (CTAT) voltage …
英飞凌24GHz Radar工作实现原理简介 - Infineon Developer …
对于此类应用，有一个内置的ptat电压其输出可以连接到vtune引脚以产生温度稳定的vco输出频率。在温度漂移情况下，该模拟控制电压（vptat）迫使vco进入相反的方向。ptat的电压输出可 …
Figure 9 VCO frequency over temperature, VCO controlled by PTAT voltage source 2.4 Proportional to Absolute Temperature :PTAT ; Voltage Source The PTAT voltage source …
A CMOS 2.45-GHz ring oscillator with temperature compensation
Abstract: This paper presents a 2.45-GHz CMOS ring voltage-controlled oscillator (VCO) with a temperature compensation of the oscillation frequency. This compensation is achieved thanks …
用于减小压控振荡器（VCO）中的频率漂移的方法和系统与流程
本文公开的实施例涉及通过在到环形振荡器(ro)的电压电流转换器(voltage tocurrent converter，vi)输出电流中引入与绝对温度成反比(ctat)来减小基于vi的vco中的频率漂移。背景 …
Low voltage VCO temperature compensation - Google Patents
A circuit for temperature compensation of a varactor voltage controlled oscillator control signal includes a proportional to absolute temperature (PTAT) current source and an adjustable, …
Circuit for Ring VCO Sheng-Lyang Jang, Chih-Ting Hu and Yun-Hsieh Chuang ... (PTAT) or MOS PTAT sources have been used [1]. Recently, an all CMOS current source which sums a …