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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)
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)
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