2019-02-222019-02-222019-01-29Babakhani, Aydin and Jamali, Babak, "Methods and related systems of ultra-short pulse detection." Patent US10191454B2. issued 2019-01-29. Retrieved from <a href="https://hdl.handle.net/1911/105170">https://hdl.handle.net/1911/105170</a>.https://hdl.handle.net/1911/105170Ultra-short pulse detection. At least some example embodiments are methods including: receiving by an antenna a series of ultra-short pulses of electromagnetic energy at a repetition frequency, the receiving creates a pulse signal; self-mixing or intermodulating the pulse signal by applying the pulse signal to a non-linear electrical device, thereby creating a modulated signal; and filtering the modulated signal to recover a filtered signal having an intermodulated frequency being the repetition frequency.14engUtility patentUS10191454B2