supported by the National Key Research and Development Program of China(Grant Nos.2021YFA1401000 and 2018YFB1801503);the National Natural Science Foundation of China(Grant Nos.61931006,62131007,U20A20212,61901093,61871419,62101111,and 61921002);the Sichuan Science and Technology Program(Grant No.2020JDRc0028);the Fundamental Research Funds for the Central Universities(Grant No.ZYGX2020ZB011);the China Postdoctoral Science Foundation(Grant No.2021M700706).
The study focuses on the development of gallium nitride(GaN)Schottky barrier diode(SBD)frequency doublers for terahertz technology.The low conversion efficiency of these doublers limits their practical applications.To...
In this paper,a double-balanced doubler chain with>43-dBc fundamental rejection over an ultra-wide bandwidth in 0.13-μm SiGe BiCMOS technology is proposed.To achieve high fundamental rejection,high output power,and h...
Project supported by the National Natural Science Foundation of China (Grant No.61871072)。
A high-performance terahertz Schottky barrier diode(SBD)with an inverted trapezoidal epitaxial cross-sectional structure featuring high varactor characteristics and reverse breakdown characteristics is reported in thi...
supported by the research grant of‘‘Chip-Scale MEMS Micro-Spectrometer for Monitoring Harsh Industrial Gases”(R-263-000-C91-305)at the National University of Singapore(NUS),Singapore;the research grant of RIE Advanced Manufacturing and Engineering(AME)programmatic grant A18A4b0055‘‘Nanosystems at the Edge”at NUS,Singapore。
Ion mobility analysis is a well-known analytical technique for identifying gas-phase compounds in fastresponse gas-monitoring systems.However,the conventional plasma discharge system is bulky,operates at a high temper...
This Letter is concerned with the influence of polarization on the damage performance of type I doubler potas- sium dihydrogen phosphate crystals grown by the conventional growth method under 532 nm pulse irradiation....
supported by the National Natural Science Foundation of China(No.51135002);the Natural Science Foundation of Liaoning Province of China(No.20102027);the Open Foundation of State Key Laboratory of Tribology of Tsinghua University(No. SKLTKF09B03)
The nanohardness is from 1.44 to 2.61 GPa,the Vickers hardness is from 127 to 252 Vickers,and elastic modulus is from 52 to 123 GPa by the nanoindentation experiments on the doubler plane of KDP crystal. An indentatio...
Project supported by the State Key Development Program for Basic Research of China(No.2010CB327404);the National Natural Science and Technology Program of China(No.2011AA010202);the National Natural Science Foundation of China(No.61101001);the Tsinghua National Laboratory for Information Science and Technology(TNList) Cross-Discipline Foundation
A frequency generation module for 60-GHz transceivers and phased array systems is presented in this paper. It is composed of a divide-by-2 current mode logic divider (CML) and a doubler in push-push configuration. B...
Project supported by the National Scientific Major Projects of China (Grant No. 2011ZX03004-001-02);the National Natural Science Foundation of China (Grant No. 60806024)
The left-handed nonlinear transmission line (LH-NLTL) based on monolithic microwave integrated circuit (MMIC) technology possesses significant advantages such as wide frequency band, high operating frequency, high...
This paper presents the design and performance of a broadband millimeter-wave frequency doubler MMIC using active 0.15 μm GaAs PHEMT and operating at output frequencies from 20 to 44 GHz. This chip is composed of a s...
Traditional transformer in high-voltage power supplies has many disadvantages such as high turn’s ratio, large volume and great design difficulties. Parallel resonant converters (PRCs) are widely used in high-voltage...