A Design Approach for Flexible RF Circuits Using Reconfigurable PROMFA Cells
2009 (English)In: Analog Integrated Circuits and Signal Processing, ISSN 0925-1030Article in journal (Other academic) Submitted
This paper presents a design approach for flexible RF circuits using Programmable Microwave Function Array (PROMFA) cells. The concept is based on an array of generic cells that can be dynamically reconfigured. Therefore, the same circuit can be used for various functions e.g. amplifier, tunable filter and tunable oscillator. For proof of concept a test chip has been implemented in 90nm CMOS process. The chip measurement results indicate that a single unit cell amplifier has a typical gain of 4dB with noise figure of 2.65dB at 1.5GHz. The measured input referred 1dB compression point is -8dBm with an IIP3 of +1.1dBm at 1GHz. In a single unit cell oscillator configuration, the oscillator can achieve a wide tuning range of 600MHz to 1.8GHz. The measured phase noise is -94dBc/Hz at an offset frequency of 1MHz for the oscillation frequency of 1.2GHz. A single unit cell oscillator consumes 18mW at 1.2GHz while providing -8dBm power into 50Ω load. In a single unit cell filter configuration, the tunable band pass filter can achieve a reasonable tuning range of 600MHz to 1.2GHz with a typical power consumption of 13mW at 1GHz. A single unit cell has a total chip area of 0.091mm2 including the coupling capacitors.
Place, publisher, year, edition, pages
CMOS, flexible circuit, generic PROMFA cells, reconfigurable circuit, tunable oscillator, tunable band pass filter
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-18508OAI: oai:DiVA.org:liu-18508DiVA: diva2:220084