A microstrip capacitor structure includes a substrate having a first side and a second side opposite the first side wherein the first and second sides of the substrate are spaced apart in a vertical direction, first and second conductive microstrip transmission line segments on the first side of the substrate, a conductive ground plane on the second side of the substrate, first and second microstrip capacitor plates connected to respective ones of the first and second microstrip transmission line segments, wherein the first and second microstrip capacitor plates are separated by a dielectric gap, and a complementary resonator comprising a removed portion of the conductive ground plane that is aligned in the vertical direction with at least a portion of the dielectric gap. The first and second microstrip transmission line segments extend in a first direction of RF signal propagation and the complementary resonant structure comprises first and second complementary resonant structures spaced apart in a second direction that is perpendicular to the first direction, and a transverse portion that extends in the second direction and connects the first and second complementary resonant structures.

A microstrip capacitor structure includes a substrate having a first side and a second side opposite the first side wherein the first and second sides of the substrate are spaced apart in a vertical direction, first and second conductive microstrip transmission line segments on the first side of the substrate, a conductive ground plane on the second side of the substrate, first and second microstrip capacitor plates connected to respective ones of the first and second microstrip transmission line segments, wherein the first and second microstrip capacitor plates are separated by a dielectric gap, and a complementary resonator comprising a removed portion of the conductive ground plane that is aligned in the vertical direction with at least a portion of the dielectric gap. The first and second microstrip transmission line segments extend in a first direction of RF signal propagation and the complementary resonant structure comprises first and second complementary resonant structures spaced apart in a second direction that is perpendicular to the first direction, and a transverse portion that extends in the second direction and connects the first and second complementary resonant structures.

A microstrip capacitor structure includes a substrate having a first side and a second side opposite the first side wherein the first and second sides of the substrate are spaced apart in a vertical direction, first and second conductive microstrip transmission line segments on the first side of the substrate, a conductive ground plane on the second side of the substrate, first and second microstrip capacitor plates connected to respective ones of the first and second microstrip transmission line segments, wherein the first and second microstrip capacitor plates are separated by a dielectric gap, and a complementary resonator comprising a removed portion of the conductive ground plane that is aligned in the vertical direction with at least a portion of the dielectric gap. The first and second microstrip transmission line segments extend in a first direction of RF signal propagation and the complementary resonant structure comprises first and second complementary resonant structures spaced apart in a second direction that is perpendicular to the first direction, and a transverse portion that extends in the second direction and connects the first and second complementary resonant structures.

An interdigital capacitor low loss and high resolution phase shifter is disclosed. The phase shifter includes an input port, a first electrode connected to the input port, an output port and a second electrode connected to the output port and arranged substantially parallel to the first electrode. The phase shifter also includes a substrate disposed between the first electrode and the second electrode, a first variable capacitor disposed on the first electrode and a second variable capacitor disposed on the second electrode. Adjustment of one or more of the variable capacitors causes a phase shift between the input port and the output port.

An interdigital capacitor low loss and high resolution phase shifter is disclosed. The phase shifter includes an input port, a first electrode connected to the input port, an output port and a second electrode connected to the output port and arranged substantially parallel to the first electrode. The phase shifter also includes a substrate disposed between the first electrode and the second electrode, a first variable capacitor disposed on the first electrode and a second variable capacitor disposed on the second electrode. Adjustment of one or more of the variable capacitors causes a phase shift between the input port and the output port.

An interdigital capacitor low loss and high resolution phase shifter is disclosed. The phase shifter includes an input port, a first electrode connected to the input port, an output port and a second electrode connected to the output port and arranged substantially parallel to the first electrode. The phase shifter also includes a substrate disposed between the first electrode and the second electrode, a first variable capacitor disposed on the first electrode and a second variable capacitor disposed on the second electrode. Adjustment of one or more of the variable capacitors causes a phase shift between the input port and the output port.