Ultra-wideband dual-integrator pulse generator

Modern RF topologies utilize a quadrature and frequency spread spectrum scheme in order to increase data throughput, avoid interference, and preserve data integrity. Many commercial solutions strongly favor the single LC oscillator owing to its simplicity and low-phase noise. Cross-coupling LC oscillators decrease quadrature output error, while increasing phase noise, which can cause adjacent channel interference. The LC oscillator also has a very limited effective tuning range and requires large die areas, which increases equipment and manufacturing costs. A flexible and ultra-wideband pulsed dual-integrator quadrature oscillator utilizing only resistors and capacitors that can be configured to exhibit strongly non-linear or quasi-linear time-domain response and can tune over a decade of GHz frequencies is proposed.