Year: 2008
Type: dissertation
Abstract: A 4-PAM/2-PAM receiver analog front-end (AFE) targeting 20GSymbol/s for use with coaxial cable channels is presented. Behavioral simulations incorporate a transmitter, scalable coaxial cable model, and the proposed receiver architecture, targeting cable loss of 32dB at 10GHz. To accommodate links of varying lengths, the AFE includes a variable-gain amplifier (VGA) and analog peaking equalizer. The input preamplifier is important for achieving the required input sensitivity. A DC bias current is introduced through the feedback resistor in a conventional shunt-shunt feedback nMOS transimpedance amplifier (TIA) to level-shift the output, obviating a following level-shifting stage. The fabricated AFE occupies 0.89mm2 in a 90-nm CMOS process and dissipates 138mW from a 1.3V supply. The AFE amplifies and opens the eye pattern of a 20-Gb/s 2-PAM data stream transmitted over coaxial cable with 7.5dB loss at 10GHz.
Source: TSpace (University of Toronto)
Author: Peter J. Park
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: CMC Microsystems
OpenAlex ID: W2247452545