एक मैजिक टी (Magic Tee) वेवगाइड जंक्शन स्वाभाविक रूप से निम्नलिखित में से कौन सा आउटपुट प्रकार उत्पन्न कर सकता है?

Which real-time application uses microwave frequencies for detecting aircraft altitude?

For a directional coupler, if Pi = Incident Power, Po = Output power, Pf = Forward coupled power, and Pr = Reverse coupled power, then the Directivity (in linear terms) of the directional coupler is defined as: