Slot antenna device for portable radiophone

A radio antenna, comprising:

• a container made of an electrically insulating material, providing an interior cavity exhibiting a longitudinal axis, and having an interior surface of said cavity bearing an electrically conductive material;
• first and second discrete and spaced-apart elongate slots formed in an exterior of said container through said insulating material to expose said conductive material to an exterior of said container;
• said first slot having a first length lying in a first plane perpendicular to said longitudinal axis;
• said second slot having a second lenght lying in a second plane oblique to said first plane and longitudinal axis;
• and
• coaxial cable coupling said first and second slots in parallel, said coaxial cable having one end connectable for feeding an electrical signal to said first and second slots.

A radio antenna, comprising:

• a container made of an electrically insulating material, providing an interior cavity exhibiting a longitudinal axis, and having an interior surface of said cavity bearing an electrically conductive material;
• first and second discrete and spaced-apart elongate slots formed in an exterior of said container through said insulating material to expose said conductive material to an exterior of said container;
• said first slot having a first length lying in a first plane perpendicular to said longitudinal axis;
• said second slot having a second length substantially equal to siad first length, lying in a second plane oblique to said first plane and longitudinal axis;
• and
• coaxial cable coupling said first and second slots in parallel, said coaxial cable having one end connectable for feeding an electrical signal to said first and second slots.