K
Koen Mouthaan
Researcher at National University of Singapore
Publications - 134
Citations - 1759
Koen Mouthaan is an academic researcher from National University of Singapore. The author has contributed to research in topics: Band-pass filter & Wideband. The author has an hindex of 23, co-authored 128 publications receiving 1585 citations. Previous affiliations of Koen Mouthaan include Delft University of Technology.
Papers
More filters
Journal ArticleDOI
Robust Downlink Beamforming in Multiuser MISO Cognitive Radio Networks With Imperfect Channel-State Information
TL;DR: The original problem is a separable homogeneous quadratically constrained quadratic problem (QCQP), which is an NP-hard problem, even for uncertain CSI, which is reformulate to a relaxed semidefinite program (SDP) and investigates three different approaches based on convex programming.
Journal ArticleDOI
Millimeter-Wave Bandpass Filters by Standard 0.18- $\mu\hbox{m}$ CMOS Technology
TL;DR: In this article, a thin film microstrip (TFMS) structure is properly constructed on the low resistivity silicon substrate, aiming at reducing the substrate loss and crosstalk to a large extent.
Journal ArticleDOI
Phase-Shifter Design Using Phase-Slope Alignment With Grounded Shunt $\lambda/4$ Stubs
Xinyi Tang,Koen Mouthaan +1 more
TL;DR: In this article, the authors proposed a distributed digital phase shifters, where both the phase-error bandwidth and the return-loss bandwidth are considered simultaneously, and a complete 4-bit phase shifter with single-pole double-throw switches is then designed and measured.
Journal ArticleDOI
Design of 60- and 77-GHz Narrow-Bandpass Filters in CMOS Technology
TL;DR: It is found that the metallization losses in the coupled-line filter as well as the ground plane are the main reasons for the insertion loss of millimeter-wave narrow-bandpass filters in a standard 0.18- m CMOS technology.
Journal ArticleDOI
Tunable Decoupling and Matching Network for Diversity Enhancement of Closely Spaced Antennas
TL;DR: It is found that monopoles with different lengths can be used for the design frequency by using this DMN, which increases the design flexibility and enables frequency tuning using the DMN only without having to change the length of the antennas.