Design of multiband segmented loop antenna for unmanned aerial vehicle applications

A multiband segmented loop antenna for unmanned aerial vehicle applications is proposed. The antenna is composed of a segmented loop including eight segments, a patch element, and a shorting strip. The antenna operates with an omnidirectional radiation at 956 MHz because the eight segments are electrically connected with seven capacitive reactances. Due to the addition of both the patch element and shorting strip, the impedance matching characteristic is improved. The proposed antenna has the multiband performance covering GPS L1, GSM1800, GSM1900, UMTS, LTE2300, LTE2500, and 2400 MHz ISM bands. The antenna has quasi-omnidirectional radiation over the above listed frequency bands.