Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: A top entry ball valve including a valve body, a valve cover, a valve stem, an assembly screw, a spring, a support sleeve, a support valve seat, a sphere, and a sealing valve seat. The valve stem passes through the valve cover and the valve body and is fixedly connected to the sphere disposed within the valve body; the valve cover is fixed to the opening of the cavity of the valve body by screws, to seal the cavity of the valve body; the sphere spherically fits with the support valve seat and the sealing valve seat; the support sleeve and the spring are provided between the support valve seat and the valve body; the spring presses the support sleeve and the support valve seat such that the support valve seat clings to the sphere; the support sleeve is fixedly connected to the valve body by the assembly screw.

Abstract: Various embodiments are described that relate to patch antenna elements and parasitic feed pads. A patch antenna element can have a resistance and reactance. The resistance can be desirable while the reactance can be undesirable. To counteract the reactance, a parasitic feed pad can be placed near the patch antenna element and the parasitic feed pad produces a capacitance. The capacitance balances out the reactance to cancel out one another. When two patch antenna elements and two parasitic feed elements are employed in one antenna stack, the stack antenna can function as a dual band antenna.

Abstract: Various embodiments are described that relate to a patch antenna. Portions of a patch antenna, such as a patch antenna element and a probe feed wire can produce an impedance that is undesirable. To compensate for this, a parasitic feed pad can be aligned with the patch antenna element to create a capacitor. This capacitor produces a capacitance that negates the impedance. It can be preferred for the capacitance to be such that there is no excess capacitance and no excess impedance.

Abstract: A top entry ball valve including a valve body, a valve cover, a valve stem, an assembly screw, a spring, a support sleeve, a support valve seat, a sphere, and a sealing valve seat. The valve stem passes through the valve cover and the valve body and is fixedly connected to the sphere disposed within the valve body; the valve cover is fixed to the opening of the cavity of the valve body by screws, to seal the cavity of the valve body; the sphere spherically fits with the support valve seat and the sealing valve seat; the support sleeve and the spring are provided between the support valve seat and the valve body; the spring presses the support sleeve and the support valve seat such that the support valve seat clings to the sphere; the support sleeve is fixedly connected to the valve body by the assembly screw.

Abstract: Various embodiments are described that relate to co-polarization between a first antenna and a second antenna. The first antenna and second antenna can be configured such that co-polarization between the two is increased (e.g., maximized) while cross-polarization is decreased (e.g., minimized). This can be accomplished by physical orientation of the first antenna against the second antenna and/or through powering the first antenna and second antenna differently with phase delay.

Abstract: Provided is a concave-plate triple eccentric butterfly valve, which includes a valve body, a upper valve stem, a valve seat, a valve plate, and a lower valve stem, among which the valve plate has a concave structure. When used in an isolation function application as well as in a fully open state, the valve plate is hidden behind the valve seat and the fluid passage of the valve is a smooth fluid passage, the valve can have a greater flow capacity. The flow of the fluid does not flush the valve plate sealing surface from the front. During the opening and closing process, the turbulence caused by the disturbance of the fluid is reduced and therefore the vibration of the system is reduced. In adjustment applications, the adjusting sleeve concave spherical surface, the adjusting sleeve fluid passage, and the valve plate convex spherical surface can cooperate to form the fluid passage adjusting opening.

Abstract: Various embodiments are described that relate to a combined signal. A signal can be transmitted from a transmitter and be received by a receiver. The receiver can be an antenna array that comprises multiple individual antenna elements. At least some of these individual elements can receive the transmitted signal at different reception angles and these received signals can be considered signal copies. The reception angle can influence a power level of a signal copy. Multiple signal copies can be combined together into a combined signal that has a greater power level than the individual signal copies used in the combination.

Abstract: Various embodiments are described that relate to a combined signal. A signal can be transmitted from a transmitter and be received by a receiver. The receiver can be an antenna array that comprises multiple individual antenna elements. At least some of these individual elements can receive the transmitted signal at different reception angles and these received signals can be considered signal copies. The reception angle can influence a power level of a signal copy. Multiple signal copies can be combined together into a combined signal that has a greater power level than the individual signal copies used in the combination.

Abstract: Various embodiments are described that relate to a line feed and a dipole element. The line feed can be supplied directly with a current without a balun. Being supplied with this current can cause the line feed to emit an electromagnetic field. This electromagnetic field can excite a dipole element with two sides. Through this excitement, the dipole element can have current flowing in a uniform direction on both sides.

Abstract: Various embodiments are described that relate to co-polarization between a first antenna and a second antenna. The first antenna and second antenna can be configured such that co-polarization between the two is increased (e.g., maximized) while cross-polarization is decreased (e.g., minimized). This can be accomplished by physical orientation of the first antenna against the second antenna and/or through powering the first antenna and second antenna differently with phase delay.

Abstract: Various embodiments are described that relate to a patch antenna. Portions of a patch antenna, such as a patch antenna element and a probe feed wire can produce an impedance that is undesirable. To compensate for this, a parasitic feed pad can be aligned with the patch antenna element to create a capacitor. This capacitor produces a capacitance that negates the impedance. It can be preferred for the capacitance to be such that there is no excess capacitance and no excess impedance.

Abstract: Various embodiments are described that relate to a line feed and a dipole element. The line feed can be supplied directly with a current without a balun. Being supplied with this current can cause the line feed to emit an electromagnetic field. This electromagnetic field can excite a dipole element with two sides. Through this excitement, the dipole element can have current flowing in a uniform direction on both sides.

Abstract: The invention relates to a turned regulating ball valve, which comprises a ball valve body, a ball and a stem mechanically fixed with the ball, the ball can be rotated by 90 degrees in the ball valve body using the stem as an axis, a first side and a second side of the ball valve body are respectively provided with an inlet seat and an outlet seat, the ball valve body and the inlet seat are provided with an inlet fluid passage, the ball valve body and the outlet seat are provided with an outlet fluid passage, the ball is placed between the inlet seat and the outlet seat, a first part of the ball, which is close to the inlet seat, is provided with a control assembly, and a second side of the ball, which is close to the outlet seat, is provided with a plurality of hole fluid channels which communicate with the control assembly.

Abstract: The invention relates to a turned regulating ball valve, which comprises a ball valve body, a ball and a stem mechanically fixed with the ball, the ball can be rotated by 90 degrees in the ball valve body using the stem as an axis, a first side and a second side of the ball valve body are respectively provided with an inlet seat and an outlet seat, the ball valve body and the inlet seat are provided with an inlet fluid passage, the ball valve body and the outlet seat are provided with an outlet fluid passage, the ball is placed between the inlet seat and the outlet seat, a first part of the ball, which is close to the inlet seat, is provided with a control assembly, and a second side of the ball, which is close to the outlet seat, is provided with a plurality of hole fluid channels which communicate with the control assembly.

Abstract: An embodiment of the present invention provides an RF ID card reader, comprising RF ID circuitry to generate an RF ID signal, a transceiver in communication with said RF ID circuitry and an array antenna associated with said transceiver for scanning an area for at least one tag and establishing communication with at least one tag.

Abstract: A multi-beam antenna system is described herein that can be used in microwave frequency applications between 1 GHz and 100 GHz. The multi-beam antenna system covers four 90° sectors for full 360° coverage. Each 90° sector is covered with at least 1 narrow steerable transmit (TX) and 1 narrow steerable receive (RX) beam. The beams are steered in the azimuth dimension.

Abstract: An electronically steerable passive array antenna and method for using the array antenna to steer the radiation beams and nulls of a radio signal are described herein. The array antenna includes a radiating antenna element capable of transmitting and receiving radio signals and one or more parasitic antenna elements that are incapable of transmitting or receiving radio signals. Each parasitic antenna element is located on a circumference of a predetermined circle around the radiating antenna element. A voltage-tunable capacitor is connected to each parasitic antenna element. A controller is used to apply a predetermined DC voltage to each one of the voltage-tunable capacitors in order to change the capacitance of each voltage-tunable capacitor and thus enable one to control the directions of the maximum radiation beams and the minimum radiation beams (nulls) of a radio signal emitted from the array antenna.