Patent ID: 6664931
Filing Date: 2003-12-16
Classification: H01Q

Abstract:
An antenna apparatus operable at a first frequency and a second frequency, the antenna apparatus comprising:a dielectric material; a slot antenna defined a conductive strip disposed on a top surface of a first portion of the dielectric material to form a substantially rectangular slot, the slot antenna being operable at a first frequency with the slot having an electrical length of about &frac18; of a wavelength of the first frequency; and an antenna element disposed on a second portion of the dielectric material, the antenna element is operable at a second frequency; and the conductive strip having a ground connection at one end of the slot antenna and near an opposite end of the conductive strip having a feed point coupled to the antenna element, wherein the electrical length from the ground connection to the feed point is about Â¼ of a wavelength of the first frequency.