Patent ID: 11863126
Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A phase shifter comprising:
a signal generator configured to generate a first signal and a second signal having a phase orthogonal to a phase of the first signal, and to output the generated first signal and the generated second signal;
an operator configured to generate a first current based on the first signal, to generate a second current based on the second signal, and to amplify the first current and the second current; and
a signal converter configured to convert a first digital signal determining a magnitude of the first current into a first analog signal, and to convert a second digital signal determining a magnitude of the second current into a second analog signal,
wherein the operator includes:
an input circuit configured to convert the first signal into the first current, based on the first analog signal, and to convert the second signal into the second current, based on the second analog signal;
a path selection circuit configured to determine paths of the generated first current and the generated second current; and
a cascode circuit configured to buffer the first current and the second current of which the paths are determined, and
wherein the operator sums the first current and the second current, controls a vector of the first current and a vector of the second current, and generates a voltage signal through an output load.