In circuits 1, 2, and 3, the LM386 inputs are connected directly across the tank circuit and use the LM386 as an RF envelope detector. Circuit 4, with its relatively large value coupling capacitor, ...

Glue alu foil 1/2 way round tube. Keep horisontal and use as tuning capacitor when rotated. You can even glue the syringe to the tuning knob :-) Not very good for mobile use, but perfect for bench ...

Release Summary. Peregrine announces new 5-bit, 32-state digitally controlled variable capacitors which provide a monolithically integrated impedance tuning solution for demanding RF applications.

ST’s STHVDAC-253C7 digital controller for tunable capacitors claims to shrink the size, BoM, and power consumption of antenna-tuning circuits for stabilizing smartphone RF performance. Using the ...

Friday, November 15, 2013 WiSpry Debuts New RF Tuning Chip. Irvine-based WiSpry, the developer of radio frequency (RF) semiconductors, said Thursdya that it has launched a new product.The company said ...

Integrating Radios Needs Fine-Tuning - March 17, 2004 Integrating Radios ... bill of materials. In an extreme case, an integrated radio would need only an antenna, a crystal, voltage supply bypass ...

The capacitor values can range from 0.5 to 10 pF with typical tuning ratios of 3:1 to 6:1, or 10:1 in some cases. Typical switching speed is less than 5 µs. Capacitor Qs greater than 100 are ...

Tuning materials and devices to adapt to their environment Researchers pursue future radio-frequency materials and devices Date: September 13, 2016 ...