The market for varactor diodes is segmented by type, application, and geography. The types of varactor diodes include Silicon, Gallium Arsenide (GaAs), and Silicon Germanium (SiGe) diodes. The ...

In the paper the approach for a frequency modulation is presented using a split-ring resonator (SRR) loaded by a varactor diode. The modulation occurs there due to the continuous variety of ...

The filter proposed here is an idea derived from [25 [25] B. Doken and M. Kartal, “Frequency selective surface with wide range of tunability,” in 2017 Conference on Microwave Techniques (COMITE), Brno ...

The filter is integrated on the antenna feed line and has a band-pass frequency response. The filtenna frequency response reconfiguration is achieved by changing the capacitance of a varactor diode, ...

We also found significant manipulation on both frequency tuning and amplitude modulation by applying bias voltage on the varactor diodes. The demonstrated frequency-agile Fano-resonant metasurface is ...

This is a little annoying, but it allows the transmitter modulating frequency to be as low as 10Hz. The stereo audio input is taken from audio jacks JACK1 and JACK2 and combined in R15 and R16. VR2 is ...

Voltage-tuned Wien bridge oscillators are not common and they can be the most challenging to design and build. There have been varactor diode-based (voltage-variable capacitor) Wien bridge ...