Abstract: A variable time delay network (210) includes segments (270, 260) which are connected in parallel to form variable time delay network (210). Segment (270) includes a varactor diode (222) and an inductive element (223) connected in series at an anode electrode (290) of varactor (222). A cathode electrode (291) of varactor diode (222) connected to a node (220). Segment (260) includes a varactor (221) and a bypass capacitor (224) connected in series at a cathode electrode (292) of varactor (221). Cathode electrode (292) is connected at a node (225). An anode electrode (293) of varactor (221) connected to node (220). The impedance at node (220) presented to a signal that is to be time delayed remains constant at the center frequency of the signal via a bias voltage applied at node (225) while controlling and changing the time delay of the signal via a bias voltage applied at node (220).

Abstract: A variable time delay network (210) includes segments (270, 260) which are connected in parallel to form variable time delay network (210). Segment (270) includes a varactor diode (222) and an inductive element (223) connected in series at an anode electrode (290) of varactor (222). A cathode electrode (291) of varactor diode (222) connected to a node (220). Segment (260) includes a varactor (221) and a bypass capacitor (224) connected in series at a cathode electrode (292) of varactor (221). Cathode electrode (292) is connected at a node (225). An anode electrode (293) of varactor (221) connected to node (220). The impedance at node (220) presented to a signal that is to be time delayed remains constant at the center frequency of the signal via a bias voltage applied at node (225) while controlling and changing the time delay of the signal via a bias voltage applied at node (220).

Abstract: A power combiner including a plurality of phasing transmission lines (122) supporting a set of amplifiers (103-105) coupled thereto, and a plurality of matching transmission lines (123-124). The set of amplifiers (103-105) have a selectable number of amplifiers between a minimum and a maximum value having gain levels between a minimum and a maximum value. Each of the matching transmission lines (123-124) is coupled to one of the phasing transmission lines (122) at one end and coupled to a common node (126) at the other end. Each of the matching transmission (123-124) lines has a characteristic impedance determined according to a function of the minimum and the maximum number of amplifiers in the set of amplifiers (103-105) and the minimum and maximum gain levels in the set of amplifiers (103-105).