Abstract: Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.

Abstract: Operating parameters of a planar antenna are controlled by providing a planar metal radiating element having an edge, by providing a slot within the radiating element, the slot having side walls, an open slot-end that lies on the edge of the radiating element, and a closed slot-end the lies within the radiating element, and by providing a thin, line-like, and metal segment, at least a portion of which is coplanar with the radiating element and that extends from the open slot-end to the closed slot-end without physically engaging the slot's side walls. The metal segment can be connected to the antenna's ground plane to thereby form a parasitic element, or the metal segment can be connected to the radiating element to thereby form an extension of the radiating element.

Abstract: A relatively large power fluid tubing is run downhole and connected to a relatively small power fluid tubing. The small power fluid tubing is connected to the valve assembly of a downhole pump. The small diameter tubing and pump is enclosed within a production tubing having the lower end thereof sealed to the pump inlet, with the lower end of the pump being placed in fluid communication with formation fluid. The upper end of the production tubing is vented and supported from the relatively large diameter power fluid tubing. A packer is disposed below the vent. Production from the pump occurs through an annulus which is formed between the small power tubing and the production tubing. Produced fluid from the pump flows through the annulus, through the vent, and up through the borehole annulus, while power fluid flows to the valve assembly of the pump engine by means of the series connected large and small power fluid tubing.