Abstract: A high speed transmission shield cable (100) includes a pair of wires (13) each including an inner conductor (131) for carrying high frequency signals and an inner insulator (132) surrounding the inner conductor for providing a sheath, at least a grounding conductor (12) disposed adjacent to the wires for providing a grounding property for the high speed transmission shield cable, and an outer jacket (11) surrounding the wires and the grounding conductor. The pair of wires further includes a pair of shielding layers formed of the conductive plastic and surrounding the inner insulator to provide adequate suppression of EMI or RFI interference.

Abstract: An antenna assembly (1) includes a substrate having a first surface (11) and a second surface (12) opposite to the first surface, a dual-band dipole antenna (5) having a symmetrical structure and arranged on the first surface, a feed cable (4) arranged on the first surface for feeding the dipole antenna, and a parasitic element (8) arranged on the second surface. The parasitic element has a pair of symmetrical first and second parasitic sections. The first parasitic section includes a first, a second and a third patches (61–63), and the second parasitic section includes a first, a second and a third pieces (71–73). The first, the second and the third patches are separated from each other. The first, the second and the third pieces are separated from each other. The parasitic element can increase the gain of the dipole antenna through coupling with the dipole antenna.

Abstract: A printed dipole antenna used in an electronic device comprising a PCB comprising some through holes; a grounding element locating on one side of the PCB; a radiating element locating on common side of the PCB with the grounding element; a coaxial cable comprising a inner conductor connecting to the radiating element and a braiding layer connecting to the grounding element; and a short circuit element locating on another side of the PCB electrically connecting the radiating element and the grounding element by said through holes. When the printed dipole antenna encounter an intense electromagnetic field, the interferential signal transmitting from the intense electromagnetic field would arrive to the grounding element through the radiating element. The interferential signal cannot arrive to the system and is unable disturb the working of the printed dipole antenna.

Abstract: An array antenna includes a dielectric substrate (10) having an upper and a lower surfaces (101, 102), a first and a second radiating elements (11, 21), a first connecting portion (31) connecting the two radiating elements arranged on the upper surface of the dielectric substrate, a first and a second grounding elements (12, 22), and a second connecting portion (32) connecting the two grounding elements arranged on the lower surface of the dielectric substrate. A feeding point (4) is disposed on the first connecting portion and a grounding point (6) is disposed on the second connecting point. A coaxial cable (7) has an inner conductor (71) coupled to the feeding point and an outer conductor (72) coupled to the grounding point.

Abstract: A dipole antenna (1) includes a first radiating trace (21) and a first grounding trace (31) respectively extending in substantially opposite directions, a second radiating trace (22) extending from an end of the first radiating trace in a direction which substantially perpendicular to the first radiating trace, and a second grounding trace (32) extending from an end of the first grounding trace in an opposite direction to the second radiating trace. The total length of the first and second radiating traces are ¼ operating wavelength of the dipole antenna.