Patent ID: 7586463

Claim:
A personal communication device comprising at least a helical antenna placed over a ground plane, packaged in a case with a rigid cover, said helical antenna axis substantially perpendicular to said ground plane and said helical antenna base substantially close to said ground plane, said ground plane size at least of a circle having a diameter not less than the helical antenna diameter, said helical antenna made of an elastic conductive spring configured to change its height along its axis, at least: a) pressed down between said case and said cover achieving a low profile; or b) extended to a higher height improving antenna gain upon removing said cover, wherein the antenna is extended upon removing said cover only by means of its own spring force, and wherein the extended helical antenna radius is either constant or decreases as the distance from the ground plane increases, wherein the device is configured to be worn by or attached to a person, and said ground plane is placed between the human body and the helical antenna.