Voltage-controlled oscillators (VCOs) based on novel self-injectionlocked compact coupled planar resonators (CCPRs) show great promise as high-Q sources for wireless communications.
In contrast to traditional small-signal approaches, the use of large-signal, time-domain design techniques helps deliver low-noise grounded-base oscillators for VHF/UHF applications.
Design Feature (April & May 2008 issue of Microwaves & RF Magazine)
Noise Minimization Techniques for RF and MW Signal Sources
Low noise RF and microwave (MW) signal sources (oscillator/VCOs) are crucial for the development of high bit rate wireless link multi-standard systems such as point-to-point radios or multipoint radios. Since the oscillator/VCO is one of the key contributors to overall phase noise performance, its contribution must be minimized as much as possible. This article presents an analytical method to minimize the noise with which it is possible to determine the component parameters that mostly affect the phase noise performance for a given class and topology.