Abstract: An antenna system is provided that can include a plurality of parasitic elements connected to and extending from a ground plane, wherein each of the plurality of parasitic elements can be oriented at a common pitch angle, wherein each of the plurality of parasitic elements can be positioned at a uniform distance from a center of an antenna disposed on the ground plane, and wherein a respective length of each of the plurality of parasitic elements, the common pitch angle, and/or the uniform distance can be optimized so as to broaden a beamwidth of a radiation pattern produced by the antenna.

Abstract: An antenna system is provided that can include a plurality of parasitic elements connected to and extending from a ground plane, wherein each of the plurality of parasitic elements can be oriented at a common pitch angle, wherein each of the plurality of parasitic elements can be positioned at a uniform distance from a center of an antenna disposed on the ground plane, and wherein a respective length of each of the plurality of parasitic elements, the common pitch angle, and/or the uniform distance can be optimized so as to broaden a beamwidth of a radiation pattern produced by the antenna.

Abstract: A quick solder chip connector is provided that can include a body, a radio signal conductor housed in the body, and one or more grounding pins integrally formed in the body. In some embodiments, the radio signal conductor can include a first end configured to electrically connect to a first transmission line formed on a first printed circuit board and a second end configured to electrically connect to a second transmission line formed on a second printed circuit board and can provide a radio frequency signal path between the first transmission line and the second transmission line. The one or more grounding pins can extend from opposing ends of the body and can be configured to physically support the body and the radio signal conductor between the first printed circuit board and the second printed circuit board.

Abstract: An antenna system that can reduce signal radiation in an unwanted direction while preserving signal radiation outside of the unwanted direction is provided. The antenna system can include a signal input source with a main antenna and a secondary antenna each electrically coupled to the signal input source. The main antenna can transmit a primary signal to produce a primary radiation pattern in response to a first portion of energy from the signal input source, and the secondary antenna can transmit a secondary signal to produce a secondary radiation pattern in response to a second portion of energy from the signal input source. The secondary signal can be amplitude modified and phase shifted to position the secondary radiation pattern to cancel out or reduce a portion of the primary radiation pattern extending in an unwanted direction while substantially preserving portions of the primary radiation pattern outside of the unwanted direction.

Abstract: A quick solder chip connector is provided that can include a body, a radio signal conductor housed in the body, and one or more grounding pins integrally formed in the body. In some embodiments, the radio signal conductor can include a first end configured to electrically connect to a first transmission line formed on a first printed circuit board and a second end configured to electrically connect to a second transmission line formed on a second printed circuit board and can provide a radio frequency signal path between the first transmission line and the second transmission line. The one or more grounding pins can extend from opposing ends of the body and can be configured to physically support the body and the radio signal conductor between the first printed circuit board and the second printed circuit board.

Abstract: An antenna system that can reduce signal radiation in an unwanted direction while preserving signal radiation outside of the unwanted direction is provided. The antenna system can include a signal input source with a main antenna and a secondary antenna each electrically coupled to the signal input source. The main antenna can transmit a primary signal to produce a primary radiation pattern in response to a first portion of energy from the signal input source, and the secondary antenna can transmit a secondary signal to produce a secondary radiation pattern in response to a second portion of energy from the signal input source. The secondary signal can be amplitude modified and phase shifted to position the secondary radiation pattern to cancel out or reduce a portion of the primary radiation pattern extending in an unwanted direction while substantially preserving portions of the primary radiation pattern outside of the unwanted direction.

Abstract: A dual band WiFi antenna is provided. The antenna can include a printed circuit board, a first antenna element etched onto the printed circuit board, a second antenna element etched onto the printed circuit board, a first RF choke etched onto the printed circuit board near a first end of the printed circuit board, and a second RF choke etched onto the printed circuit board near the first end of the printed circuit board. The first antenna element and the first RF choke can work within a first frequency band, and the second antenna element and the second RF choke can work with a second frequency band.

Abstract: A high isolation multi-band monopole antenna that can be used in connection with MIMO systems is provided. The antenna can include various components to prevent band to band coupling and provide isolation from neighboring antennas.

Abstract: A multi-band antenna is provided that operates in at least two non-harmonically related frequency bands. The antenna includes a ground plane, a cone-shaped relatively high frequency antenna element with a tip of the high frequency antenna disposed adjacent to but electrically isolated from the ground plane with a base of the cone-shaped antenna element extending away from the ground plane, and at least three relatively low frequency antenna elements electrically connected to and extending between the base of the cone-shaped antenna element and the ground plane.

Abstract: An antenna operating at a frequency f is provided. The antenna includes an elongated shaft having a first end, a second end, a first member, a second member, and a third member, and an antenna sleeve surrounding at least a portion of the second member of the elongated shaft. The first, second, and third members are contiguous with each other, and the antenna sleeve is loaded with a dielectric material to shorten a length of the second member of the elongated shaft.

Abstract: A high isolation multi-band monopole antenna that can be used in connection with MIMO systems is provided. The antenna can include various components to prevent band to band coupling and provide isolation from neighboring antennas.

Abstract: A multi-band antenna is provided that operates in at least two non-harmonically related frequency bands. The antenna includes a ground plane, a cone-shaped relatively high frequency antenna element with a tip of the high frequency antenna disposed adjacent to but electrically isolated from the ground plane with a base of the cone-shaped antenna element extending away from the ground plane, and at least three relatively low frequency antenna elements electrically connected to and extending between the base of the cone-shaped antenna element and the ground plane.

Abstract: A remotely controllable lock includes a housing, a motor mounted in the housing, and a control device mounted in the housing for activating the motor. A gear train is mounted in the housing and driven by an output shaft of the motor and has a drive gear. A turn knob has an axle rod extended through an axle tube mounted to the housing. The axle rod is engaged with a driving member for driving a dead bolt of the door lock. When the turn knob is manually turned through a pre-determined angle, the movable plate is moved from a first position representing one of a locked status and an unlocked status of the dead bolt to a second position representing the other one of the locked status and the unlocked status without actuating the drive gear.

Abstract: A lock assembly includes a main body having a compartment defined in a lower part thereof for removably receiving a lock core therein. The main body further includes a number of upper chambers defined in an upper part thereof, each upper chamber including an upper pin tumbler received therein. The lock core includes a number of lower chambers defined therein, each lower chamber including a lower pin tumbler received therein. The main body further includes a number of longitudinally spaced holes defined in a periphery thereof each hole being communicated with a lower end of an associated upper chamber. A member has a number of branches, wherein each branch is removably inserted into an associated hole to support the associated upper pin tumbler during removal of the lock core.