Patent ID: 11888238
Assignee: NXP USA, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A circuit comprising:
a first microstrip transmission line;
a second microstrip transmission line;
wherein the first microstrip transmission line and the second microstrip transmission line include linearly arranged conductive strips on at least one conductive layer of the circuit;
a slotline formation;
wherein the slotline formation extends between the first microstrip transmission line and the second microstrip transmission line, the slotline formation configured to electromagnetically couple the first microstrip transmission line to the second microstrip transmission line during operation of the circuit; and
at least one controllable capacitance circuit electrically connected to at least one of the first microstrip transmission line and the second microstrip transmission line, wherein a magnitude of a capacitance value of the at least one controllable capacitance circuit determines an impedance of the circuit;
wherein the at least one controllable capacitance circuit comprises:
a first controllable capacitance circuit electrically connected to the first microstrip transmission line and including a first control interface, wherein a magnitude of a capacitance value of the first controllable capacitance circuit is controllable in response to a first capacitance control signal received at the first control interface; and
a second controllable capacitance circuit electrically connected to the second microstrip transmission line and including a second control interface, wherein a magnitude of a capacitance value of the second controllable capacitance circuit is controllable in response to a second capacitance control signal received at the second control interface.