A current-mode automatic frequency tuning system for filters with current mirrors

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
George Souliotis
Keyword(s):  
Frequency Tuning ◽  
Current Mode ◽  
Automatic Frequency ◽  
Current Mirrors ◽  
Automatic Frequency Tuning ◽  
A Current

scholarly journals Design of area-efficient GHz range current mode frequency synthesizer using standard CMOS technology

2019 ◽  
Vol 70 (4) ◽  
pp. 323-328
Author(s):  
Dan-Dan Zheng ◽  
Yu-Bin Li ◽  
Chang-Qi Wang ◽  
Kai Huang ◽  
Xiao-Peng Yu
Keyword(s):  
Frequency Synthesizer ◽  
Frequency Tuning ◽  
Supply Voltage ◽  
Current Mode ◽  
Cmos Technology ◽  
Mode Frequency ◽  
Loop Filter ◽  
Silicon Area ◽  
Power Efficient ◽  
A Current

Abstract In this paper, an area and power efficient current mode frequency synthesizer for system-on-chip (SoC) is proposed. A current-mode transformer loop filter suitable for low supply voltage is implemented to remove the need of a large capacitor in the loop filter, and a current controlled oscillator with additional voltage based frequency tuning mechanism is designed with an active inductor. The proposed design is further integrated with a fully programmable frequency divider to maintain a good balance among output frequency operating range, power consumption as well as silicon area. A test chip is implemented in a standard 0.13 µm CMOS technology, measurement result demonstrates that the proposed design has a working range from 916 MHz to 1.1 l GHz and occupies a silicon area of 0.25 mm2 while consuming 8.4 mW from a 1.2 V supply.

Third-order active-RC complex filter with automatic frequency tuning for ZigBee transceiver applications

2015 ◽  
Vol 22 (3) ◽  
pp. 966-973 ◽  
Author(s):  
Di Li ◽  
Zhan Jing ◽  
Yin-tang Yang ◽  
Xiao-feng Wu ◽  
Zuo-chen Shi ◽  
...  
Keyword(s):  
Frequency Tuning ◽  
Automatic Frequency ◽  
Third Order ◽  
Complex Filter ◽  
Automatic Frequency Tuning
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