1 Subjects: “...microwave waveguide...”

2 Subjects: “...active control...”

3 Subjects: “...waveguide method...”

4 Subjects: “...active metamaterial antenna...”

5 Subjects: “...waveguide...”

6 Subjects: “...dual active bridge...”

7 Subjects: “...actively tunable nanodevices...”

8 Subjects: “...waveguides...”