A Low-Complexity CMOS Receiver for UWB signals

It is well-known that GPS is a widely used technology for localization in outdoors environments. Nonetheless, such standard fails to provide a practical and accurate solution for localization and ranging applications within indoor environments due to the need of satellites and meter-level accuracy, which is poor for indoor environments. It is in...

Integrated Readout Circuit for Cross-Correlation Based Ultrasonic Ranging

Distance measurement using ultrasonic waves is employed in a wide range of industrial applications. In this thesis our main goal is to investigate the possibility of processing ultrasonic signals with a ??-modulator and to process its bitstream output signal with the cross-correlation technique, while being independent of the transducer that is...

A High-Resolution, Resistor-Based Temperature Sensor

This thesis focuses on developing a high-resolution, energy-efficient smart temperature sensor. A resistor-based temperature-sensing structure is chosen as the core of the sensor. To digitize the core output, a low-noise readout circuit is developed. The design was fabricated in a standard CMOS technology, and the measurements were conducted to...

Edge-prediction DTC and Clock-gating TDC Design for Ultra Low Power All Digital PLL

Full-Duplex CMOS Duplexer: Passive self-interference cancellation

To accommodate the growing demand for wireless communications, new techniques are required to increase throughput of wireless networks. One technology aiming to increase the spectral efficiency of wireless devices is full duplex (FD) radios. These systems are capable of single carrier transmission and reception and could ideally double the...

An Energy-Efficient, Resistor-Based, Smart Temperature Sensor

A CMOS Temperature Compensated Log-Amp Detector

Publications of bipolar log-amp detectors for RF power detection show good temperature and RF performance. So far published CMOS log-amps fail to demonstrate accurate performance over temperature. This thesis present a temperature compensated CMOS RF power detector based on the log-amp architecture with an industry temperature range of -40 C to...

A Low Power 10-bit SAR ADC in a 45nm CMOS process

In this work a low power SAR ADC with 8.9 ENOB for wireless communication systems is presented. A capacitive charge redistribution DAC with a unit capacitor of 0.5fF is used. The implemented charge-sharing technique, allows the use of 2^(N-1) + 1 unit capacitors, instead of the conventional 2^N , thus decreasing the DAC area and the DAC...

A Sub-1V, Micropower Bandgap Reference

Bandgap references are used in many ICs to produce ‘stable’ and ‘temperature-independent’ voltage. This thesis describes a sub-1V bandgap reference in 40 nm and 0.16 µm CMOS technologies that is functional from -40 oC to 125 oC. Traditionally, BJT based references are commonly used, but produce an output voltage of 1.2 V and are not suitable for...

Design of a fully integrated CMOS highly temperature stable frequency reference

A new fully integrated frequency reference has been designed, fabricated and measured. The goal of the design procedure has been high stability of the frequency over temperature variations. This should be achieved using a CMOS technology without MEMS and crystals, while being restricted by a very low power budget. The frequency is designed based...

ADPLL Design for WiMAX

The frequency synthesizer, which functions as a local oscillator, is a critical block in the transceiver. It needs to meet very stringent specifications and consume as less power as possible. Design of a traditional charge-pump PLL as the frequency synthesizer in the advanced CMOS technologies in the transceiver of advanced communication systems...

Time-to-Digital Converter (TDC) for WiMAX ADPLL in State-of-The-Art 40-nm CMOS

WiMAX (Worldwide Interoperability for Microwave Access) is the emerging wireless technology standard of the near future, which enables high speed packet data access. To anticipate the future demands on WiMAX technology, we proposed an ADPLL (all-digital phase locked loop) solution for the WiMAX system. The developed ADPLL system has targeted...