An automatic antenna tuning circuitry has been developed that allow designers to implement a high Q printed loop antenna in a general-purpose 0.6-μm BiCMOS frequency shift-keying (FSK) transmitter ...

Antenna Tuning Architectures An open-loop antenna tuning system is often used when a passive antenna can no longer meet performance requirements, such as when bandwidth requirements increase, handset ...

AOR USA has added a highly sensitive and directional “loop” antenna to its product line. The LA800 is designed for outdoor use by monitoring enthusiasts. It combines the proven and timeless ...

[W2BRI] put together a 5 foot cube loop antenna built from copper pipe. The tuning mechanism uses an electric screwdriver to tune his giant PC Board tuning capacitor.

The loop is, of course, an inductor and by removing some insulation, the operator can clip a lead at different points to control the inductance. A variable capacitor resonates the antenna, so ...

Fig 1. Automatic antenna tuning with a variable impedance matching network can overcome many of the problems associated with detuning and wide frequency ranges. Feedback from the antenna via ...

Peregrine Semiconductor’s DuNE technology solves one of the orneriest problems in RF design—antenna impedance matching. In every wireless application, an antenna has to be connected ...

Lumafield speculates that the cable 'indicates that the strap loop acts as an antenna to support the 'seek' function.' The 2nd generation AirPods Pro is equipped with a U1 chip with a coordinate ...