Patent ID: 11888504
Assignee: APPLE INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 13:
14. An electronic device comprising:
a power amplifier;
an output node coupled to an antenna;
a transmission line that couples the power amplifier to the output node;
a signal coupler disposed on the transmission line and having a coupled node and an isolated node, the signal coupler being configured to transmit a first portion of a signal wave to the output node while coupling a second portion of the signal wave onto the coupled node, and the signal coupler being characterized by scattering parameters S21, S32, S44, S34, S42, S22, S41, S31, and S24;
a power detector communicably coupled to the coupled node; and
a termination communicably coupled to the isolated node, wherein the termination has circuit components that configure the termination to exhibit a reflection coefficient that is inversely proportional to S21*(S32*S44−S34*S42)+S22*(S34*S41−S31*S44)+S24*(S31*S42−S32*S41).