ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,272, issued on June 24, was assigned to Compact Antennas LLC (Anchorage, Alaska).
"Compact frequency adjustable portable antenna" was invented by Donald P. Labriola II (La Verne, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compact mobile high-frequency Antenna that quickly and quietly self-adjusts to minimize Voltage Standing Wave Ratio (VSWR). Includes a compact tuning coil and a rolling contact. A Reentrant cap serves as a capacitive top hat. A spiral cut enhances the efficiency is this very short antenna. A tough insulating tube covers the antenna to serve as a radome protect the user from RF burns. The use of rolling contacts on a sm...