OREGON STATE UNIVERSITY

You are here

Analog Impairments Correction of Quadrature Mixers in Stand Alone Receivers

KEC 1001
2011-10-17 23:00:00
Speaker Information
Radu Fetche
IC Design Engineer
Rohde and Schwarz USA

In a complex radio communication system most of the radio’s impairments are digitally corrected, assisted by the digital baseband processor/controller. There are applications where the radio is placed on a separate die from the digital baseband processor for performance or business related reasons. These stand alone radios are analog in nature with digital content only in the ADC, baseband filtering and PLL.

This talk will focus on the techniques used for correction of the quadrature mixer impairments in the analog domain. Several options are presented to correct for phase and amplitude imbalance, second and third order nonlinearity and the local oscillator leakage.

Speaker Bio

Radu Fetche is an IC design engineer at Rohde and Schwarz USA in Beaverton OR. Prior to joining Rhode and Schwarz USA, he was a senior design engineer with the TV and Radio Group of MAXIM Integrated Products in Hillsboro OR. His research focuses on high-performance microwave and radio circuits for communications and measurement applications.