Learn More
A fully integrated Ka-band Monolithic microwave integrated circuit (MMIC) Doherty Power Amplifier (PA) is designed and demonstrated in this paper. The proposed Doherty PA maily consists of a Lange coupler, carrier amplifier branch, peaking amplifier branch and impedance transformer network. offset lines are introduced in each branch to overcome the inherent(More)
The purpose of this work is to develop a simple method to incorporate quantum effect in traditional finite-difference time-domain (FDTD) simulators. Witch could make it possible to co-simulate systems include quantum structures and traditional components. In this paper, tunneling transmission coefficient is calculated by solving time-domain Schrödinger(More)
A two-chip S-band receiver has been designed and demonstrated in this paper. The proposed receiver is composed by a two stage low-noise amplifier (LNA) and a resistive type mixer. To achieve wide operation bandwidth as well as low noise figure, the LNA uses wideband matching network and negative feedback technique. Measured results show the LNA obtains a(More)
A method for synthesizing a two-section inductively-coupled lumped-element quadrature hybrid for broad-band applications is first proposed. Based on this analysis, a two-section inductively-coupled lumped-element quadrature hybrid operated at X-band is presented. The measured magnitude imbalance and phase difference are 2.4dB and 90°±(More)
  • 1