Google Patents US20220255210A1 - Wilkinson power divider, wilkinson power combiner, and amplifier Analysis and design of mixers, rejection of image frequency, RF-LO isolation.US20220255210A1 - Wilkinson power divider, wilkinson power combiner, and amplifier Mixer circuits, Gilbert cell and applications. Mixers, principle of operation, specifications, up-conversion and down-conversion. Harmonic components and intermodulation products, compression point, third order intercept point. Direct frequency synthesizers Phase-locked loop frequency synthesizers. Oscillators with one-port device (Gunn oscillator). High-efficiency amplifiers (outphasing, polar amplifiers).Ĭollpits and Hartley oscillator circuits. RF switchmode power amplifiers, class D, E, F amplifiers. High-efficiency amplifiers with envelope tracking. Amplifier design for specified noise figure. Unilateral amplifier, unilateral figure of merit. Microwave field effect transistors, MOSFET, MESFET, HEMT. Excitation of resonators, coupling with external circuits. Transmission line resonators, cavity resonators, dielectric resonators. Serial and parallel resonant circuit, quality factor and bandwidth. Hybrids, quadrature hybrid, 180° hybrid, even and odd mode analysis. Waveguide and transmission line couplers. Three-port networks (ferrite circulator, T-junction, resistive power divider, Wilkinson power divider).ĭirections coupler (symmetrical and asymmetrical).
Two-port networks (attenuator, ferrite isolator, phase shifter).
Signal flow graphs, graph decomposition, Mason's rule. Impedance and admittance matrices (Z- and Y-parameters). Dielectric waveguide.Ĭoaxial transmission line. Time domain response of the transmission line, pulse propagation, dispersion and causality. Input impedance of the lossless and lossy transmission line, Impedance along the transmission line, characteristic impedance and propagation coefficient, phase and group velocity, power flow on the transmission line. Wave equations, general solution and physical interpretation, voltage and current waves on the transmission line. Lumped element model for a transmission line. Difference between lumped elements and distributed-parameter networks.
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