a direct conversion modulator-demodulator with even harmonic mixers with emphasis on noise analysis is presented. the circuits consist of even harmonic mixers (ehms) realized with antiparallel diode pairs (apdps). we evaluate the different levels of i/q imbalances and dc offsets and use signal space concepts to analyze the bit error rate (ber) of the proposed transceiver using m-ary qam schemes...

A direct conversion modulator-demodulator with even harmonic mixers with emphasis on noise analysis is presented. The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs). We evaluate the different levels of I/Q imbalances and DC offsets and use signal space concepts to analyze the bit error rate (BER) of the proposed transceiver using M-ary QAM schemes...

The reverse conduction mode of operation of the SiC trench JFET allows for diode-free synchronous rectification. This paper shows that the reverse conduction mode is an inherent property of the device caused by diffusion of electrons through the source fingers under conditions of moderate gate-drain diode forward bias. Experimental results confirm the expectations for a vertical-channel SiC JFE...

Double layer two-dimensional electron systems at high perpendicular magnetic field are used to realize magnetic tunnel junctions in which the electrons at the Fermi level in the two layers have either parallel or antiparallel spin magnetizations. In the antiparallel case the tunnel junction, at low temperatures, behaves as a nearly ideal spin diode. At elevated temperatures the diode character ...

In this paper a monolithically integrated frequency tripler based on an antiparallel pair of Schottky diodes is presented. The tripler is designed for flat output power response and wide frequency range. With 2 mW of input power the tripler covers the frequency range of 75 – 140 GHz (bandwidth 60 %) delivering output power between -19.4 dBm and -14.7 dBm with an average efficiency of 1.1 %. The...

A direct conversion modulator-demodulator with even harmonic mixers for fixed wireless applications is presented. The circuits consist of even harmonic mixers (EHMs) realized with antiparallel diode pairs (APDPs). A communication link is set up to examine the overall performance of proposed modulator-demodulator. The transmission of 16-QAM signal with 110Mbps data rate over fixed wireless link ...

This article proposes effective methods of measurements and computations internal temperature the dies Insulted Gate Bipolar Transistor (IGBT) diode mounted in common case. The nonlinear compact thermal model considered device is proposed. takes into account both self-heating phenomena mutual couplings between them. In proposed model, influence on self transfer resistances taken account. Method...

Abstract A MOSFETs switching times calculation method for the known modulation strategy bidirectional buck + boost DC-DC converter is presented. former low-loss, constant-frequency based on a negative inductor offset current takes place at beginning of each conversion period which provides ability to turn converter’s MOSFET switches under zero-voltage and zero (ZVS/ZCS) condition. Time interval...

This article presents a planar silicon integrated subharmonic mixer on top of photonic-crystal (PC) platform. The local oscillator power is injected through 2-D PC slab to resonant cavity that effectively couples the signal bow-tie antenna. same antenna, which printed cavity, contains an antiparallel Schottky diode pair, performs downconversion. proposed design simple, easy-to-integrate, low-co...