To automate tuning, an Arduino switches a bank of capacitors and inductors in and out of the circuit. By varying the load, it can find the ideal matching for the given antenna and frequency.

But a tuner has to be adjusted, and often, you have to put a signal out over the air to make the adjustments to match your antenna to your transmitter.

This problem is easily solved by inserting an antenna tuner between the transmitter and antenna. This is an LC circuit usually consisting of a fixed inductor and one or more variable capacitors.

The key to the performance of WiSpry's tuners is the use of Micro-Electro-Mechanical Systems (MEMS) to switch multiple capacitors in and out of the circuit to create the values needed to match the ...

A very simple and cheap tv antenna amplifier circuit built with BF961 a N–Channel Dual Gate MOS common transistor used for input and mixer stages especially for FM- and VHF TV-tuners up to 300 MHz. L1 ...

This tiny antenna tuner uses a new type of technology that could improve the connection and increase the battery life of our smartphones, but manufacturers aren't letting it.

MaxLinear today announced its MxL603 global terrestrial tuner has been chosen for Air HDTV, an over-the-air (OTA) antenna/set-top box (STB) designed b ...

Antenna maker Mohu is taking another stab at combining free over-the-air television with online streaming. The company is introducing a new product called Airwave at CES that’s essentially an ...

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 ...

As wireless broadband consumes ever larger amounts of spectrum, engineers are looking for antenna designs capable of working over a wide range of frequencies. One approach is to use tuned antennas.

Antenna maker Mohu has built a $150 connected TV tuner with integrated antenna for free over-the-air broadcast TV.