Dual-frequency antenna

摘要

An umbrella-shaped crown section 5a is provided on the front end of a linear element section 5b. The front end of the umbrella-shaped crown section 5a and the power supply section 6a at the lower end of the element section 5b are connected by means of a folded element 5c. Thereby, the dual-frequency antenna 5 is able to operate in two different frequency bands.