Antenna module for portable computer

A computer comprising:

• an antenna module disposed at one corner of the computer;
• said antenna module including a wire first dipole antenna arm extending along a first edge section of the computer and a second dipole antenna arm extending along a second edge section which meets the first edge section at said corner, said wire first dipole antenna arm being spaced from the wire second dipole antenna arm without connection therebetween;
• and
• a coaxial cable extending along at least one of said wire first and second dipole antenna arms;
• wherein an inner core of the coaxial cable is electrically connected to one of the wire first and second dipole antenna arms, while an outer sheath is electrically connected to the other of said wire first and second dipole antenna arms.

A computer comprising:

• an antenna module disposed at one corner of the computer;
• said antenna module including a wire first dipole antenna arm extending along a first edge section of the computer and a second dipole antenna arm extending along a second edge section which meets the first edge section at said corner, said wire first dipole antenna arm being spaced from the wire second dipole antenna arm without connection therebetween, the second dipole antenna arm comprising an additional section perpendicularly projecting from an end thereof near the first dipole antenna arm, said additional section being spaced from the wire first dipole antenna arm without connection therebetween;
• and
• a coaxial cable extending along at least one of said wire first and second dipole antenna arms;
• wherein
• an inner core of the coaxial cable is electrically connected to one of the wire first and second dipole antenna arms, while an outer sheath is electrically connected to the other of said wire first and second dipole antenna arms.

An antenna module for electronic apparatus comprising:

• a first dipole antenna arm extending in a first direction and a second dipole antenna arm extending in a second direction that is different from the first direction, said first dipole antenna arm and said second dipole antenna arm being respectively electrically connected to a printed circuit board at a first point and at a second point, a gap being formed between the first point and the second point, the second dipole antenna arm comprising an additional section projecting from an end thereof, the parameters of a length of the first dipole antenna arm, a length of the second dipole antenna arm, a length of the additional section, a length of the gap between the first point and the second point, a diameter of the first dipole antenna arm and a diameter of the second dipole antenna arm, and an impedance of the coaxial cable are chosen to yield a value of calculated VSWR between 1 and 2, and such that the length of the first dipole antenna arm plus the length of the second dipole antenna arm is within 50% of one half a wavelength of operating signals in an upper and lower operating frequency range of the antenna, thereby obviating a need for matching circuitry to perform function of transfer, balancing and matching between the first dipole antenna and the second dipole antenna arm;
• a coaxial cable adapted for interfacing said dipole antenna arms to a transmitting/receiving circuit, having an inner core electrically engaging with the first dipole antenna arm at the first point, and an outer sheath electrically engaging with the second dipole antenna arm at the second point.