Reduced-size, full-wave quad antenna, includes additional wire and capacitor connected across its geometric center, and is fed by quarter wave coaxial transformer

摘要

The antenna, reduced by 40% in its circumference, includes an additional wire (5) with a capacitor (4), connected across its geometric center. Antenna matching to an impedance of 50 ohms, is effected at the transceiver by two parallel 75 ohm coaxial lines, one quarter wave long, which transform the antenna impedance of 28 ohms approximately, to 50 ohms.