Skip to main content
Communication Theory Lab
CTL
Communication Theory Lab
Home
News
Events
People
All People
Principal Investigator
Research Scientists
Postdoctoral Fellows
Students
Visiting Scholars
Former Members
Former Members from Texas A&M University
Former Members from University of Minnesota
Collaborators
Alumni
Research
Publications
Teaching
Funding
Media
Contact Us
QPSK modulator
A Compact QPSK Modulator with Low Amplitude and Phase Imbalance for Remote Sensing Applications
1 min read ·
Thu, May 12 2011
News
wide-band Quadrature Phase Shift Keying
remote sensing applications
Circuits
QPSK modulator
Farhan Abdul Ghaffar, et al., " A Compact QPSK Modulator with Low Amplitude and Phase Imbalance for Remote Sensing Applications" Canadian Journal on Electrical and Electronics Engineering 2, (4), 2011, 1. A new, compact and wide-band Quadrature Phase Shift Keying (QPSK) modulator is presented for remote sensing applications. The microstrip-based modulator employs quadrature hybrid coupler, Wilkinson divider, rat race coupler and GaAs MESFET switches. It is designed to be part of an X band remote sensing transmitter with a center frequency of 8.25GHz. The fabricated module demonstrates the
