These structures are made on a RogersRT3003 dielectric substrate. Controllable coding is achieved by changing the capacitance value of the varactor diode. A single coding unit can achieve a coding ...

What is an LED but a diode, and it’s well known that diodes also have capacitance. In fact, this quality is exploited in varactor diodes, a specialty diode whose capacitance can be changed by ...

The proposed antenna is based on a top-loaded monopole antenna, and then utilizes varactor diodes in order to continuously vary ... equivalent circuit model simulations, and prototype measurements. We ...