Patent ID: 7884775

Claim:
An apparatus that facilitates multi-band wireless communications, comprising: a first microstrip feedline on a first side of a dielectric material; a second microstrip feedline on a second side of the dielectric material; a first dipole element on the first side of the dielectric material physically connected to the first microstrip feedline; a second dipole element on the second side of the dielectric material physically connected to the second microstrip feedline and oriented with respect to the first dipole element to form a first dipole; a first island dipole element on the first side of the dielectric material linearly displaced from the first dipole element in a direction parallel to the orientation of the first dipole element such that the displacement creates a first gap of a first selected distance between the first dipole element and the first island dipole element; and a second island dipole element on the second side of the dielectric material linearly displaced from the second dipole element in a direction parallel to the orientation of the second dipole element such that the displacement creates a second gap of a second selected distance between the second dipole element and the second island dipoles element; wherein the first selected distance, the second selected distance, a length of the first dipole element and a length of the second dipole element are selected such that the first dipole element and the second dipole element resonate at at least two discrete frequency bands, a number of the at least two discrete frequency bands is equal to the number of dipole elements and island dipole elements on the first side of the dielectric material, and wherein the apparatus further comprises an enclosure with an attached parasitic element and the apparatus produces a substantially circular radiation pattern.