Patent ID: 7202828
Filing Date: 2007-04-10
Classification: H01Q

Abstract:
1. A device comprising: a RF transmitter, a casing for the RF transmitter and, connected to and extending from the RF transmitter, an antenna for radiating RF signals produced by the RF transmitter, the antenna comprising an elongated flexible member having a first portion and a second portion each of which comprises a first conductor, a second conductor and an insulator between the first conductor and the second conductor, and, between the first portion and the second portion, a third portion comprising a first conductor, wherein the first conductor of each of the first portion, the second portion and the third portion is a common conductor connected to the RF transmitter, wherein the second conductor of the first portion and the second conductor of the second portion are electrically isolated from one another, and wherein the second and third portions of the elongated flexible member form a radiator having a combined effective electrical length equivalent to a quarter of the wavelength of radiation to be emitted by the radiator.