Title :
A CMOS quadrature baseband frequency synthesizer/modulator
Author :
Kosunen, Marko ; Vankka, Jouko ; Waltari, Mikko ; Sumanen, Lauri ; Koli, Kimmo ; Halonen, Kari
Author_Institution :
Helsinki University of Technology, HUT, Finland
Abstract :
A quadrature baseband frequency synthesizer/modulator IC has been designed and processed in a 0.5 µm CMOS. This quadrature baseband frequency synthesizer/modulator is intended for use in a wide variety of indoor/outdoor portable wireless applications in the 2.4-2.4835 GHz ISM frequency band. This frequency synthesizer/modulator is capable of frequency and phase modulation. The major components are: a quadrature direct digital synthesizer, digital-to-analog converters and smoothing filters. The chip has a complexity of 17,803 transistors with a die/core area of 24/9 mm2. The power dissipation is 496 mW @ 3.3 V.
Keywords :
Baseband; CMOS integrated circuits; CMOS process; Digital-analog conversion; Frequency modulation; Frequency synthesizers; Integrated circuit synthesis; Phase modulation; Process design; Smoothing methods;
Conference_Titel :
Solid-State Circuits Conference, 1998. ESSCIRC '98. Proceedings of the 24th European
DOI :
10.1109/ESSCIR.1998.186278
