Linearity Analysis and Enhancement Techniques for the Base-Collector Capacitance Dominated Distortion in Bipolar Amplifiers

SiGe bipolar amplifiers are getting more competitive in terms of noise figure to GaAs amplifiers. However, the linearity of these amplifiers is still limited in view of these GaAs implementations. In order to address and overcome these linearity limitations, this thesis report will start demonstrating that the linearity of SiGe bipolar...

LNA and Square Law Detector at 60 GHz for Passive Radiometers

Millimeter-wave passive radiometers have earlier been designed in III-V integrated circuit (IC) technologies, due to their higher carrier mobility when compared to silicon, resulting in higher transit frequencies (fT) thereby enabling to operate at higher frequencies. However, increased fT in SiGe BiCMOS technology has generated interest for...

An Ultra-Linear LNA for Base stations

In the commercial basestation market of today, LNAs are implemented using GaAs pHEMT technology. The popularity of GaAs pHEMT technology is based on its excellent low noise and high linearity properties. In this project, an LNA for basestation applications is designed using SiGe technology, which can provide low noise performance, but requires...

60GHz front-end receiver chain in 90nm CMOS technology

Operation at millimeter-wave frequency, where up to 7GHz of unlicensed bandwidth is available in the 60GHz band, provides an opportunity to meet the higher data rate demands of wireless users. Advancements in silicon technology permit one to consider exploiting the 60GHz band for commercial applications (e.g., short range, wireless HDTV...

Highly Linear LNA Design for Base Station Applications

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance for optimum coverage with a best signal quality. In today’s commercial market, the GaAs enhancement-mode pHEMT based LNA is dominant. However, a SiGe-based LNA, due to its high integration,...

Highly linear LNA design for base station applications

As the first stage of the amplifier chain aiming for the base station applications, a highly linear low noise amplifier (LNA) dictates very high performance for optimum coverage with a best signal quality. In today’s commercial market, the GaAs enhancement-mode pHEMT based LNA is dominant. However, a SiGe-based LNA, due to its high integration,...