Rf Circuits And Systems - Rf Receiver Architectures

Comprehesive Study of Widely Used Radio-Frequency Receivers

What you'll learn

This course will provide an in depth teaching of radio-frequency receiver architectures.

The course covers fundamentals of radio-frequency receivers including direct-coversion, heterodyne, image-rejection, dual-downconversion architectures.

The course offers practical and insightful information about RF receivers

The case studies include WiFi receivers and cellular recievers.

Requirements

The prerequist for this course is the previous Udemy courses offered by Prof. Payam Heydari on basic concepts in RF design and fundamentals of communication theory.

Description

A radio-frequency transceiver comprising a receiver and a transmitter is the main system responsible for establishing communication between users of the communication system. This lecture focuses on the study and design of radio-frequency receivers. The course starts with an overview of important design specifications for both a transmitter and a receiver. Common specs such as frequency bands and channelization, data rate, type of modulation, transmitter output power and spectral mask, the transmitter EVM, receiver sensitivity, receiver input level, and receiver tolerance to blockers will be briefly discussed. The course then will provide an in-depth study of wireless receivers. Starting with bandpass representation of RF signals, the need for the quadrature downconversion to fully recover the signal is discussed. The course will then go over the concept of heterodyne architecture and investigates the problem of image in this architecture. The students will learn that a heterodyne receiver always faces a trade-off between channel selection and image rejection. Next, the widely used direct-conversion receiver architectures will be studied. The course provides a deep study of all issues in regard to the direct-conversion receiver including the local-oscillator leakage, the DC offset, even-order distortion, I/Q imbalance, and the impact of 1/f noise. Next, the image-reject architectures will be studied and a powerful graphical analysis is utilized to analyze these architectures. The course will go over the low-IF receivers and polyphase filters. Finally, the dual-quadrature downconversion receivers based on the concept of complex mixers will be studied. 

Overview

Section 1: RF Receiver Architectures

Lecture 1 Overview of the Course

Section 2: RF Receiver Architectures

Lecture 2 Wireless Standards and Performance Specifications for an RF Transceiver

Section 3: RF Receiver Architectures

Lecture 3 A Communication Link Budget Example

Section 4: RF Receiver Architectures

Lecture 4 Narrowband Design, Channel Selection, Band Selection

Section 5: RF Receiver Architectures

Lecture 5 Basics of RF Receivers

Section 6: RF Receiver Architecture

Lecture 6 Quadrature Mixing and Heterodyne Receiver Architecture (part 1)

Section 7: RF Receiver Architecture

Lecture 7 Quadrature Mixing and Heterodyne Receiver Architecture (part 2)

Section 8: RF Receiver Architecture

Lecture 8 Image in Heterodyne Receivers; Channel Selection vs. Image Rejection

Section 9: RF Receiver Architecture

Lecture 9 Dual Downversion Receivers

Section 10: RF Receiver Architecture

Lecture 10 Basics of Direct Conversion Receiver Architectures

Section 11: RF Receiver Architecture

Lecture 11 Studying Two Examples; (a) a DCR and (b) a dual downconversion RX

Section 12: RF Receiver Architecture

Lecture 12 Overview of Issues in a Direct-Conversion Receiver

Section 13: RF Receiver Architecture

Lecture 13 DCR Issues: Local Oscillator Leakage and DC Offsets

Section 14: RF Receiver Architecture

Lecture 14 DCR Issues: Even-Order Distortion

Section 15: RF Receiver Architecture

Lecture 15 DCR issues: I/Q imbalance

Section 16: RF Receiver Architecture

Lecture 16 Image-Reject Architectures (part 1)

Section 17: RF Receiver Architecture

Lecture 17 Image Reject Architectures (part 2)

Section 18: RF Receiver Architecture

Lecture 18 Hartley Architecture and its Problems

Section 19: RF Receiver Architecture

Lecture 19 Weaver Architecture and Low-IF Receivers

Section 20: RF Receiver Architecture

Lecture 20 Polyphase Filters (part 1)

Section 21: RF Receiver Architecture

Lecture 21 Polyphase Filters (part 2)

Section 22: RF Receiver Architecture

Lecture 22 Double-Quadrature Receivers Based on the Concept of Complex Mixers

This course is (1) intended for aspiring design engineers who are seeking a career in RF design; (2) graduate students; and (3) senior-level undergraduate students.