A Survey of Advanced Microwave Frequency Measurement Techniques
Microwaves are radio waves with wavelengths ranging from as long as one meter to as short as one millimeter, or equivalently, with frequencies between 300 MHz and 300 GHz. The science of photonics includes the generation, emission, modulation, signal processing, switching, transmission, amplification, detection and sensing of light. Microwave photonics has been introduced for achieving ultra broadband signal processing. Instantaneous Frequency Measurement (IFM) receivers play an important role in electronic warfare. Technologies used for signal processing, include conventional direct Radio Frequency (RF) techniques, digital techniques, Intermediate Frequency (IF) techniques and photonic techniques.