Short-circuit microstrip antenna and device including that antenna

摘要

A microstrip antenna includes a composite short-circuit consisting of two conductive strips. A vertical strip, in the plane of the short-circuit between the two strips, is connected to the central conductor of a coupling line forming part of the antenna and enabling the coupling with a resonance thereof, as for example to excite such resonance. The short-circuit and the vertical strip constitute two terminals for said antenna, enabling it to be easily connected to a signal processing units, such as a transmitter. The antenna described includes two zones enabling it to operate at two frequencies. The antenna has particular utility in portable telephones and their base stations.