Abstract
M.Ing. (Electrical And Electronic Engineering)
This dissertation presents a fully integrated image rejection receiver, the design of a wireless
local area network receiver, by using CMOS transistors, including circuit implementations, as
well as the design of a low noise amplifier, down conversion mixer, LC oscillators passive
on-chip inductor, IF mixer, and low-pass filter based on CMOS active inductor.
The study compares receiver topologies, heterodyne architecture, image rejection and
associated problems, direct conversion, low- IF and wideband IF architecture, and DC
offset, and presents the chosen circuit configurations for a 2.4 GHz CMOS wireless-LAN
receiver. It also compares different topologies of a low noise amplifier, mixers, and oscillators.
On-chip passive devices are also presented.
The fully integrated image rejection receiver consists of a first stage LNA with input 2.4 GHz and NF equal to 2 dB , output of the LNA signal at 2.4 GHz, with a gain of 24 dB mixing with LC Local oscillator signal 1.2 GHz in the RF Mixer, and the out-mixing signal mixed
again with the quadrature Oscillator 1.2 GHz in the IF Mixer. The final stage presents a
differential low-pass filter based on a CMOS active inductor 100 MHz. This receiver design
operates in the 2.4 GHz frequency.
The ultimate aim of this project is to design a small-area IC chip and a low-power fullyintegrated
2.4 GHz CMOS receiver. CMOS was selected as the technology of choice because
of its cost advantages in comparison with other processes.