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In this work, we present a multi-frequency illumination transmitter for microwave imaging radar reflectometry (MIR) diagnostics of thermonuclear fusion plasmas. The transmitter is able to illuminate 8 tones simultaneously. To improve the power amplifier stability, the cross-coupled capacitor based neutralization technique is adopted. Diplexer based power combining is first adopted to realize heterogeneous...
In this paper, new design techniques for improving the DC-to-RF efficiency for sub-THz triple-push oscillators in CMOS technology is presented. We investigate the effect of the bias of transistors and the impedance seen by each transistor on the overall performance of triple-push CMOS oscillators in terms of DC-to-RF efficiency. By optimizing the harmonic generation and harmonic extraction in a triple-push...
Programmable active bandpass filters (BPFs) have been designed in a chip-scale heterogeneous integration technology, which intimately integrates InP HBTs on a deep scaled CMOS technology. Therefore, the active BPF can leverage both high performance of InP HBT and high density and programmability of CMOS. Two BPF prototypes, consisting of a programmable gain amplifier (PGA), a fifth- or third-order...
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