Patent ID: 7446708

Claim:
A single-feedpoint multiband monopole antenna with independent radiator elements, the antenna comprising: a “T” shaped microstrip counterpoise coupler comprising: a stem comprising a single-feedpoint interface; a cross bar bisecting the stem and comprising a first radiator interface, and a second radiator interface, at least one of the first radiator interface and the second radiator interface having a tapered width portion; a first microstrip radiator with an end connected to the counterpoise coupler first radiator interface, and an unterminated end, the first microstrip radiator capable of resonating at a first center frequency; a second microstrip radiator with an end connected to the counterpoise coupler second radiator interface, and an unterminated end, the second microstrip radiator capable of resonating at a second center frequency, non-harmonically related to the first frequency; and a groundplane.