In this article, we propose and evaluate a direct antenna modulation (DAM) system. We attempt to bypass the upper bound on an efficiency bandwidth product (EBP) for an electrically small antenna (ESA) ...

The channels could be electronically tuned by varying the DC bias on the diode via a control circuit (Figure 2). This eliminated the mechanism with all its benefits. Figure 2. An early varactor-based ...

The plan was to take a double balanced, ring diode mixer and inject a carrier and a modulating audio signal into that to create a double-sideband (DSB) mixer output signal with a suppressed carrier. I ...

Three Primary Functions of a Diode When considering what is a diode, it's important to recognise its three primary functions: rectification, regulation, and signal demodulation. Each of these ...

Figure 2. Symbol of varactor diode. Varactor diode construction Varactor diodes are designed such that they have a very narrow depletion region. Simply a semiconductor diode with p-type and n-type ...

Global Varactor Diode Market Analysis 2012-2016 and Opportunity Assessment 2017-2027, By Application As per the projections given by Future Market Insights, the defence, aeronautics and marine segment ...

In this paper, a reconfigurable metasurface incorporating electronically biased varactor diodes is designed to flexibly generate holographic images and to realize multibit spatial energy modulation ...