Search

A novel input buffer for very high speed and high resolution track-and-hold amplifiers has been developed in BiCMOS technology. The configuration retains the benefits of a cascode configuration in terms of distortion and adaptability to various advanced switched-emitter (source)-follower based architectures while maintaining supply requirements similar to a conventional degenerated common emitter amplifier. To demonstrate the advantages of the presented architecture a distortion analysis has been carried out. The closed form formulas show very good agreement with Spectre® simulations using complete models. [ABSTRACT FROM AUTHOR]

A novel phase shifter topology for digital phased antenna arrays based on a low-power phase control block joint with an innovative PLL design is presented. Experimental results obtained by a prototype are reported validating the architecture capabilities. [ABSTRACT FROM AUTHOR]

A new topology for phase-shift control in the transmitter module of phased array antennas is introduced. The proposed structure is based on a hybrid DDS-PLL approach. An offset-PLL evolution is proposed in order to preserve phase resolution, along with a maximum phase shift of 360°. Experimental results obtained by a prototype are reported, validating the architecture potentialities. [ABSTRACT FROM AUTHOR]

A new distributed voltage controlled oscillator (DVCO) is presented. The proposed topology allows a very wide tuning range VCO and fine–coarse tuning. The design of a prototype DVCO is discussed and measurements are reported showing improved performance in terms of phase noise, tuning range and power consumption. [ABSTRACT FROM AUTHOR]