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A 30-GHz band power amplifier (PA) IC is designed, fabricated and fully tested in 120-nm SiGe HBT process. The impedances of the output matching network are optimized at both the fundamental and second harmonic for a high power added efficiency (PAE). At a supply voltage of 1.4 V, the PA IC has exhibited a measured output P1dB of 10.8 dBm, a peak PAE of 32.4%, and a small-signal gain of 9.1 dB at...
This paper presents novel sub-harmonic mixer topologies for W-band automotive radar applications in 65nm CMOS technology. Working principle and performance of three kinds of topologies are analyzed and discussed with physical layout and EM simulation. The simulated performance shows a double side band noise figure of 20.8 dB and a voltage conversion gain of −8.7 dB at an RF frequency of 79.0001 GHz...
In this paper, we report and demonstrate a divide-by −4.5 injection-locked fractional frequency divider using hybrid integrated circuits (PCB process). The presented frequency divider operates at a fundamental frequency of f0 = 2 GHz, and achieves an operation range of 187 MHz under a sweeping input frequency fin around 9 GHz. At a supply current of 5.8 mA, the DC power dissipation is 5.3 mW. The...
The inter-pulse interaction due to acoustic waves in a passively harmonic mode locked SWNT fiber laser that can operate at continuously tunable harmonic states is studied experimentally.
The choice of switching frequency is a very important issue for the development of Parallel Active Power Filter (PAPF), but so far is lack of discussion in a quantitative manner from previous publications. In this paper, an extensive analysis on the switching frequency to the performance of PAPF is carried out, and a specification of the switching frequency values with different compensation results...
In this paper, an extensive analysis on the influence of DC side voltage to the performance of PAPF is carried out, and a specification of the DC side voltage rated value is presented. First, through equivalent circuit analysis and Fourier Transform analytical expressions, a required lowest value of DC side voltage for full compensation (a zero source current THD) is obtained for six-pulse converter...
Design of DC side voltage rated value is a very important issue for the development of static var generators (SVG), but so far is lack of discussion in a quantitative manner from previous publications. In this paper, an extensive analysis on the influence of DC side voltage to the performance of SVG is carried out, and a specification of the DC side voltage rated value is presented. First, through...
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