Today's mobile phones need to not only support cellular frequencies, but also non-cellular features such as those used for mobile TV, Bluetooth, WLAN, and location-based services. As the real estate ...
Simplified continuous tuning of filters, impedance matching networks, and antennas has become a crucial design element in modern mobile devices. Wireless 3G/4G technologies, Wi-Fi, Bluetooth, GPS, and ...
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 ...