http://hdl.handle.net/10453/148699 2026-04-06T03:25:20Z http://hdl.handle.net/10453/194589 Title: Cascade sliding mode control with lumped disturbance compensation for acceleration tracking of electrohydraulic–pneumatic actuators Authors: Quoc Dong, H; Lee, S-G; Ha, QP; Tuan, LA; Vu, MT; Ko, K 2026-03-01T00:00:00Z http://hdl.handle.net/10453/194551 Title: Computationally Efficient Multistep Model Predictive Control for Multilevel Converters Authors: Benjamin, A; Poblete, P; Farhangi, M; Cuzmar, RH; Papafotiou, G; Geyer, T; Aguilera, RP Abstract: Recently multistep direct model predictive control MPC has emerged as an effective control alternative for low switching high power converters These multistep MPC approaches often rely on the Sphere Decoding Algorithm SDA to effectively solve the associated optimization problem However as analyzed in this work the computational effort required by the SDA based optimization grows significantly with the number of available output voltage levels in the converter To address this issue the work at hand proposes a computationally efficient multistep MPC strategy for multilevel converters The key idea is to reformulate the converter dynamic model by considering voltage level changes as control inputs instead of actual voltage levels This reformulation enables the SDA to search over a finite and reduced set of possible transitions yielding execution times that are independent of the converter s voltage levels Simulation results for a three phase 7 level converter are provided to validate the proposed multistep MPC for multilevel converters 2025-12-03T00:00:00Z http://hdl.handle.net/10453/194543 Title: A 65nm CMOS 60GHz Quadrature Signal Generator for Low-Phase-Noise Millimeter-Wave Synthesis Authors: Shen, C; Wu, W; Zhang, X; Zhu, X; Feng, H Abstract: This paper presents a 60 GHz quadrature phase signal generator formed by a 20 GHz voltage controlled oscillator VCO integrated with an Injection Locked Tripler ILT fabricated in 65nm CMOS technology The frequency synthesizer achieves a post layout simulated output range of 57 6 65 4 GHz through ILT based tripling with a phase noise of 104 67 dBc Hz at 1 MHz offset By incorporating an optimized injection locking topology and quadrature coupling network the proposed design attains superior phase noise performance while providing a highly integrated local oscillator solution for millimeter wave communication systems 2025-10-06T00:00:00Z http://hdl.handle.net/10453/194540 Title: Two-Layer Balanced Low-Pass Filter With Multiple Transmission Zeros Using Microstrip-to-Microstrip Vertical Transitions Authors: Yang, L; Luo, Z; Zhu, X; Gómez-García, R Abstract: A balanced low pass filter LPF with multiple stop band transmission zeros TZs and enhanced common mode CM suppression in a two layer substrate is reported It consists of two back to back connected open circuited full wavelength slotline based microstrip to microstrip vertical transitions and two resistively terminated microstrip stubs In this proposed LPF configuration differential mode DM LPF capabilities with high stopband power rejection levels through the creation of three out of band TZs and enhanced CM suppression are attained Its theoretical foundations are detailed by means of its transmission line TL equivalent circuit For practical validation purposes a two layer microstrip balanced LPF prototype is manufactured and tested It exhibits a measured DM multi TZ LPF response with 3 dB cut off frequency at 0 62 GHz and stopband power rejection levels above 23 88 dB from 1 39 to 5 06 GHz along with CM suppression levels higher than 17 97 dB from DC to 6 GHz 2025-10-06T00:00:00Z