Concurrent, reconfigurable, and adaptable oscillators for multi-band multi-mode communication systems

This paper presents the design approach of RCO (reconfigurable concurrent oscillator) using MCPTR (multi-coupled planar transmission line resonators) that simultaneously generates two or more signals of different frequencies that eliminate the need of lossy switches for switching the frequency band, thereby improves the system throughput. The measured phase noise for band#1 (2250-2850 MHz) and band#2 (4600-5900 MHz) are typically better than -108 dBc/Hz at 100 kHz offset from the carrier respectively; and the topology can be extended for higher frequency band.