QVCO with Complementary Coupling

  • Mohammad ElbadryEmail author
  • Ramesh Harjani
Part of the Analog Circuits and Signal Processing book series (ACSP)


Software-defined radio allows a single front-end to be used for multiple standards, through software programmability and reconfigurability. The original SDR, proposed by “Mitola”, has an ADC directly following the antenna, allowing all downconversion and post-processing to be performed in digital domain. This approach, in theory, would provide the highest level of flexibility and programmability. However, no practical implementation is possible with current technology. A more practical approach is to use a generic direct-conversion architecture with programmable filters as well as programmable LO to cover multiple bands.


Supply Voltage Tuning Range Versus Supply NMOS Transistor Wide Tuning Range 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.Qualcomm Technologies Inc.San DiegoUSA
  2. 2.Department of ECEUniversity of MinnesotaMinneapolisUSA

Personalised recommendations