Patent ID: 8487821

Claim:
An antenna comprising: a dipole radiator region comprising a series resonant tank; and a loop compensator/radiator region integral with the dipole radiator region and comprising a parallel resonant tank; wherein the series resonant tank and the parallel resonant tank are electrically connected in parallel, and wherein each region is configured such that the reactive portions of the tank of each region change in a complementary manner to cancel each other, and a total composite resistance of the combined parallel fed regions remains substantially constant as an input frequency of the antenna deviates from a designed center frequency within an operating bandwidth of the antenna; wherein the dipole radiator region and the loop compensator/radiator region compose an “A”-shaped structure with two straight continuous legs lying across both regions and with a discontinuity in a central horizontal segment, wherein the antenna includes a common input point at the discontinuity; and a balun component coupled to the common input point at the discontinuity, and further including a first compensating capacitor placed across the discontinuity closest to the dipole radiator region and a second compensating capacitor placed across the discontinuity closest to the loop compensator/radiator region to provide the substantially constant resistance over the operating bandwidth of the antenna.