This paper describes the design technique and the test results for an S-band direct phase modulator with extremely linear phase characteristics. A modulation index of 2.4 radians (300/spl deg/ phase ...

In this fm modulator prototype the varactor bias was 7.5V for the best linearity but this could be different with other varactors. FM modulator circuit diagram. Advertisement. Related articles: ...

As V increases, d increases and C decreases. There’s your voltage controlled capacitor. Any diode can be used this way but most diodes are designed to minimize junction capacitance. Varactors are ...

If you are interested in designing a class D power amplifier circuit with a varactor diode, you might be wondering how to go about it. A class D amplifier is a type of switching amplifier that ...

Their sibling, the SMV1763-079LF, is a silicon hyperabrupt-junction varactor diode specifically designed for 3-V platforms. The specified high-capacitance ratio and low reverse voltage make this ...

Designed to control the frequency of crystal oscillator circuits, the 3022 series of high-ratio, hyperabrupt varactor tuning diodes is designed to deliver a dc bias control voltage from -0.3V to -4V.

The SMV1430-040LF miniature 0402 abrupt varactor diode is ideal for VCO, phase noise, frequency control and voltage tuned filter applications requiring low resistance and large capacitance over a ...