Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a stopping assembly. The fixed assembly has a main axis. The movable assembly is configured to connect an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The stopping assembly is configured to limit the movement of the movable assembly relative to the fixed assembly within a range of motion.

Abstract: According to one embodiment, a waveguide antenna includes a top plane made of electrically conductive material, a bottom plane made of electrically conductive material, a first feed member coupled to the top plane and the bottom plane through a first via, the first feed member to be electrically coupled a transceiver of an electronic device, and an array of vias disposed surrounding the first via. The array of vias coupling the top plane and the bottom plane to form a cavity between the top plane and the bottom plane. When an electrical signal is provided to the first feed member, the first feed member excites a space within the cavity between the top plane and the bottom plane.

Abstract: A dipole antenna with resonant cavities operates with a resonant frequency near the antenna operating frequency to widen the operating bandwidth of the dipole antenna. Specifically, a ground consisting of multiple layers of electrically conductive planes and electrically conductive vias connecting the electrically conductive planes to form a ground wall cavity for a dipole member. The ground wall induces multiple resonant frequencies due to its coupling effect to the dipole member. A radio frequency (RF) frontend for mobile communication devices contains the dipole antenna with cavity coupled to a transceiver to receive and transmit communication signals.

Abstract: According to one embodiment, a waveguide antenna includes a top plane made of electrically conductive material, a bottom plane made of electrically conductive material, a first feed member coupled to the top plane and the bottom plane through a first via, the first feed member to be electrically coupled a transceiver of an electronic device, and an array of vias disposed surrounding the first via. The array of vias coupling the top plane and the bottom plane to form a cavity between the top plane and the bottom plane. When an electrical signal is provided to the first feed member, the first feed member excites a space within the cavity between the top plane and the bottom plane.

Abstract: A dipole antenna with resonant cavities operates with a resonant frequency near the antenna operating frequency to widen the operating bandwidth of the dipole antenna. Specifically, a ground consisting of multiple layers of electrically conductive planes and electrically conductive vias connecting the electrically conductive planes to form a ground wall cavity for a dipole member. The ground wall induces multiple resonant frequencies due to its coupling effect to the dipole member. A radio frequency (RF) frontend for mobile communication devices contains the dipole antenna with cavity coupled to a transceiver to receive and transmit communication signals.