This comprehensive article provides an in-depth exploration of single-sideband (SSB) modulation and demodulation techniques. The article discusses the principles, fundamental methods, and circuits involved in SSB modulation, highlighting its efficiency as an analog amplitude modulation method for long-distance information transmission while effectively utilizing available bandwidth. A comparative analysis of various modulation methods, including conventional amplitude modulation, double-sideband (DSB)modulation, vestigial sideband (VSB) modulation, frequency modulation (FM), phase modulation (PM), and single-sideband (SSB) modulation, is presented. Furthermore, the article delves into the diverse applications of SSB analog amplitude modulation.