The process of varying the FREQUENCY of a signal, often PERIODIC ally. An example of FM is the violinist's VIBRATO, where the length of a string (and therefore the resulting pitch) is rapidly altered ...

In Frequency Shift Keying the transmitted signal shifts between two different frequencies to represent binary data, like two different notes from a piano. This would technically be 2-FSK modulation.

Research into ionospheric wave generation and modulation has significantly enhanced our understanding of the upper atmosphere’s dynamic behaviour. Ionospheric waves arise from the interplay ...

AR RF/Microwave Instrumentation launched the FL8000 Series of electric field probes, covering the 5 kHz to 60 GHz frequency range. EMC testing in a lab often requires measuring different types of ...

International Conference: PIERS 2023 Announcement Title: Low-Phase-Noise Frequency-Tunable Microwave and Millimeter-Wave Generation Using an Electro-Optic-Modulation Comb” [Glossary] ...

Article Title Interleaved frequency comb by chip-scale acousto-optic phase modulation at polydimethylsiloxane for higher-resolution plasmonic comb spectroscopy ...

In this expression, the + indicates the upper sidebands, and the - indicates lower ones, which if producing a negative frequency appear as a positive frequency component with a PHASE SHIFT of 180°. If ...