Abstract: An antenna module includes first, second, and third conductor arms. The second conductor arm has first and second end portions, and is coupled to an end portion of the first conductor arm to form a substantially T-shaped connection. The third conductor arm is spaced apart from the first and second conductor arms by first and second gaps, respectively, and is disposed parallel to the first conductor arm. The first end portion of the second conductor arm and the third conductor arm are electrically coupled to a coaxial cable for receiving two signals therefrom, respectively. The second end portion of the second conductor arm is electrically coupled to a ground cable for grounding.

Abstract: An antenna module includes first, second, and third conductor arms. The second conductor arm has first and second end portions, and is coupled to an end portion of the first conductor arm to form a substantially T-shaped connection. The third conductor arm is spaced apart from the first and second conductor arms by first and second gaps, respectively, and is disposed parallel to the first conductor arm. The first end portion of the second conductor arm and the third conductor arm are electrically coupled to a coaxial cable for receiving two signals therefrom, respectively. The second end portion of the second conductor arm is electrically coupled to a ground cable for grounding.

Abstract: A multi-band antenna includes a ground section, a feed-in section, a first conductor arm, and a second conductor arm. The feed-in section has a first end, a second end opposite to the first end, and a feed-in point for feeding in radio frequency signals. The first end of the feed-in section is connected electrically to the ground section. The first conductor arm has a connecting section that extends from the second end of the feed-in section, and an extending section that extends from the connecting section, that is distal from the ground section, and that has a first end portion. The second conductor arm extends from the second end of the feed-in section, and has a second end portion that is adjacent to the first end portion of the extending section.

Abstract: An antenna includes a T-shaped radiating element and a coupling element. The radiating element includes opposite first and second radiating portions, and a feeding portion that extends transversely to the first and second radiating portions and that is connected to a junction of the first and second radiating portions. The coupling element is disposed between the second radiating portion and the feeding portion of the radiating element, and is coupled electromagnetically to at least one of the second radiating portion and the feeding portion of the radiating element.

Abstract: An antenna includes a T-shaped radiating element and a coupling element. The radiating element includes opposite first and second radiating portions, and a feeding portion that extends transversely to the first and second radiating portions and that is connected to a junction of the first and second radiating portions. The coupling element is disposed between the second radiating portion and the feeding portion of the radiating element, and is coupled electromagnetically to at least one of the second radiating portion and the feeding portion of the radiating element.

Abstract: A wavelength converter structure comprises a supporting substrate, a ferroelectric substrate having at least one ridge waveguide including a plurality of periodic poled regions positioned on a first side of the ferroelectric substrate, and at least one controlling pattern positioned on a second side of the ferroelectric substrate. The ridge waveguide is joined to the supporting substrate via an adhesive, and the second side is opposite to the first side.

Abstract: An antenna includes first and second radiating elements and a grounding element. The first radiating element is operable in a first frequency range and has a feeding end. The second radiating element is operable in a second frequency range, is connected to the feeding end of the first radiating element, and cooperates with the first radiating element so as to define a slot therebetween such that the second radiating element is coupled to the first radiating element. The grounding element extends from the first radiating element.

Abstract: An electronic device includes a casing, a circuit board, and an internal antenna unit. The circuit board is disposed in the casing. The internal antenna unit is disposed in the casing, and includes a feeding element that overlaps with the circuit board, and first and second radiating elements, each of which extends from the feeding element toward a wall of the casing beyond an edge of the circuit board. A feeding point is provided on the feeding element, and is coupled to the edge of the circuit board. A grounding point is provided on the feeding element, and is coupled to the edge of the circuit board.

Abstract: An electronic device includes a casing, a circuit board, and an internal antenna unit. The circuit board is disposed in the casing. The internal antenna unit is disposed in the casing, and includes a feeding element that overlaps with the circuit board, and first and second radiating elements, each of which extends from the feeding element toward a wall of the casing beyond an edge of the circuit board. A feeding point is provided on the feeding element, and is coupled to the edge of the circuit board. A grounding point is provided on the feeding element, and is coupled to the edge of the circuit board.

Abstract: Several electromagnetic scattering structures are designed to improve antenna radiation patterns. The electromagnetic scattering structure has a conductive layer with certain patterns, and is applied on the radome of the base-station sector antenna. The electromagnetic waves radiating from the antenna therein induce scattering effects, which, together with the electromagnetic diffractions from the rear metal panel of the antenna, can substantially reduce the back lobe and the fields in regions not covered by the antenna. Thus, the antenna radiation patterns are improved so that a lower possibility of co-channel interferences between adjacent base stations can be achieved and therefore better efficiency of the base-station coverage also can be obtained.

Abstract: A multi-frequency antenna module includes first and second radiating elements disposed on a substrate and spaced apart from each other. A serpentine first transmission line conductor of the first radiating element and a second transmission line conductor of the second radiating element contact electrically and respectively first and second electrical contacts on a circuit board in an electronic apparatus when the substrate is mounted in a housing of the electronic apparatus. The first radiating element further includes at least one conducting line that is disposed parallel to second transmission line segments and that interconnects an adjacent pair of parallel first transmission line segments. A grounding line conductor is disposed on the substrate, is coupled electrically to the first radiating element, and contacts electrically a third electrical contact on the circuit board when the substrate is mounted in the housing.

Abstract: A multi-frequency antenna module includes first and second radiating elements disposed on a substrate and spaced apart from each other. A serpentine first transmission line conductor of the first radiating element and a second transmission line conductor of the second radiating element contact electrically and respectively first and second electrical contacts on a circuit board in an electronic apparatus when the substrate is mounted in a housing of the electronic apparatus. The first radiating element further includes at least one conducting line that is disposed parallel to second transmission line segments and that interconnects an adjacent pair of parallel first transmission line segments. A grounding line conductor is disposed on the substrate, is coupled electrically to the first radiating element, and contacts electrically a third electrical contact on the circuit board when the substrate is mounted in the housing.

Abstract: Several electromagnetic scattering structures are designed to improve antenna radiation patterns. The electromagnetic scattering structure has a conductive layer with certain patterns, and is applied on the radome of the base-station sector antenna. The electromagnetic waves radiating from the antenna therein induce scattering effects, which, together with the electromagnetic diffractions from the rear metal panel of the antenna, can substantially reduce the back lobe and the fields in regions not covered by the antenna. Thus, the antenna radiation patterns are improved so that a lower possibility of co-channel interferences between adjacent base stations can be achieved and therefore better efficiency of the base-station coverage also can be obtained.

Abstract: An apparatus for torque-converter clutch transmission includes a final output planetary gear, at lease a braking pump, a compound planetary gear train, an oil path system, and a centrifugal pump. The final output planetary gear includes a sun gear mounted on an engine crankshaft, a planetary carrier mounted on an output shaft, and a ring gear. The compound planetary gear train includes first and second planetary gears which together share a common ring gear. The first planetary gear further includes a sun gear mounted to the engine crankshaft and a planetary carrier connected to a rotor shaft of the braking pump, and a ring gear, while the second planetary gear further includes a sun gear connected to the ring gear of the final output planetary gear and a planetary carrier fixedly mounted to an inner wall of a gear box.