Patent ID: 11888238

Abstract:
Embodiments of a circuit, system, and method are disclosed. In an embodiment, a circuit includes first and second microstrip transmission lines. The first and second microstrip transmission lines include linearly arranged conductive strips on the circuit and a slotline formation extends between the first microstrip transmission line and the second microstrip transmission line so that the slotline formation is configured to electromagnetically couple the first microstrip transmission line to the second microstrip transmission line during operation of the circuit. In addition, the circuit includes at least one controllable capacitance circuit electrically connected to at least one of the first microstrip transmission line and the second microstrip transmission line, where a magnitude of a capacitance value of the at least one controllable capacitance circuit (e.g., including a barium strontium titanate (BST) capacitor) is controllable (e.g., in response to a capacitance control signal received at a control interface).