A low noise PLL based FM audio transmitter in 0.35 μm CMOS technology

• PLL (Phase Locked Loop) based frequency synthesizers are widely used in the wireless communication field. This paper puts focus on the design and implementation of a 60dB SNR (Signal to Noise Ratio) FM transmitter, which realizes direct frequency modulation of audio signal by utilizing a carrier frequency ranging from 78MHz to 108MHz, with a 100 kHz channel selection resolution. Fabricated in standard 0.35μm CMOS technology, this PLL's core circuit takes an area of 745×700 μm2. The transmitter has a total power consumption of below 56mW for a 3V supply, and the strongest measured spur is below -50dBc.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Publikations- och innehållstyp

kon (ämneskategori)

ref (ämneskategori)