CML Microsystems Plc (CML.L) designs, develops and supplies mixed-signal, radio frequency (RF) and microwave semiconductors for global communications markets including critical communications, satellite communications, network infrastructure, public safety, Internet of Things (IoT), broadcast, aerospace and defense; its core products encompass millimeter wave (mmWave) MMICs such as RF transceivers, RF/IF quadrature demodulators (e.g., CMX970, CMX992), direct conversion receiver ICs (e.g., CMX994 series including CMX994A, CMX994E, CMX994G), baseband processors, data controllers and interface devices that support wireless front-ends for HF/VHF/UHF professional radios, wireless data terminals, wireless microphones, marine and avionics systems, hybrid PMR-LTE platforms, 5G small cells and beamforming technologies. Founded in 1968 and headquartered in Langford, Essex, United Kingdom, the fabless manufacturer employs around 167 staff across eight offices with design facilities in four locations and conducts trading operations in Europe, the Far East, the Americas, the United States and Singapore through a combination of in-house testing and outsourced production. In recent developments, CML Microsystems acquired Plextek RFI Ltd in 2023 to bolster its RF design capabilities and independent services income stream, followed by the acquisition of Hyperstone AG in May 2025 to expand into NAND flash controller technology, diversify markets and enable joint system-on-chip (SoC) platforms leveraging complementary low-power analogue skills.