Through the microstrip technology, a design and implementation of a microstrip antenna with phase control using varactor diode for wifi applications was developed. The design of the reconfigurable antenna was built under ...

Nonlinear transmission lines (NLTLs) using varactor diodes can produce high-frequency waves on the order of some tens of megahertz. They reach only low power signals, and a way to improve the voltage modulation depth (VMD) ...

Filters play an important role in many radio frequency (RF) and microwave applications. They are used to separate or combine different frequency bands. The electromagnetic spectrum is limited and needs to be shared, so ...

A new methodology for the synthesis of tunable patch filters is presented. The methodology helps the designer to perform a theoretical analysis of the filter through a coupling matrix that includes the effect of the tuning ...

Electrically tunable evanescent mode half mode substrate integrated waveguide (HMSIW) resonators are implemented for S band applications. An HMSIW loaded with a complementary split ring resonator (CSRR) achieves forward ...

This thesis tackles the design, manufacture and validation of multi-port and frequency reconfigurable antennas intended for advanced communications applications. The main accomplishments of this thesis are: Extension of ...