Title :
An Open Loop Phase Shifter and Frequency Synthesizer
Author :
nia, S.K. ; Hadidi, Khayrollah
Author_Institution :
Urmia Univ., Urmia
Abstract :
This paper presents a new open-loop phase shifter and frequency synthesizer which can be implemented by small hardware. In the proposed method the differential square wave is converted to a differential ramp. Then the cross point of two ramps will be detected as the middle point of high or low duration which will be full-range recovered for 90° shifting operation. Four phases in 10MHz frequency can be generated by 3mw power consumption and 60¿×60¿ area. All circuits have been simulated in 0.35¿ CMOS technology.
Keywords :
CMOS integrated circuits; frequency synthesizers; phase shifters; CMOS technology; differential ramp; differential square wave; frequency 10 MHz; frequency synthesizer; open loop phase shifter; power 3 mW; size 0.35 mum; CMOS technology; Circuit simulation; Clocks; Delay; Energy consumption; Frequency synthesizers; Laboratories; Microelectronics; Phase locked loops; Phase shifters;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4511076
