ST fabs integrated, flexible wideband RF synthesiser for software radio

September 24, 2014 // By Graham Prophet
STMicroelectronics’ STW81200 RF synthesiser uses the company’s BiCMOS (SiGe, silicon-germanium) manufacturing technology to integrate on one chip; wideband voltage-controlled oscillators (VCOs), a dual fractional and integer phase-locked-loop (PLL) core, low-noise voltage regulators, plus a set of programmable hardware options to comply with a wide variety of RF requirements.

The result is, ST says, the industry's most flexible and highest-performance integrated wideband RF synthesiser, which it designed to meet the needs of rapidly-growing numbers of wireless standards and frequency bands that support an ever-expanding number of applications.

In applications such as base stations, radio links, satellite, communications, and test and measurement, overall system performance is tightly linked to RF synthesiser phase noise characteristics. These applications demand integration and cost optimisation with no compromise in RF performance. STW81200 supports development of multi-band, multi-standard software-defined radios across the wide frequency range of 50 MHz to 6 GHz, while delivering normalised in-band phase-noise floor of -227 dBc/Hz, a VCO phase noise of -135 dBc/Hz @1MHz offset with a 4.0 GHz carrier, and a noise floor of -160 dBc/Hz.


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