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Software Defined Radio (SDR) platforms are valuable for research and development activities or high-end systems that demand real-time adaptable wireless protocols. While low latency can be achieved using the dedicated digital processing…

Networking and Internet Architecture · Computer Science 2022-08-11 Thijs Havinga , Xianjun Jiao , Muhammad Aslam , Wei Liu , Ingrid Moerman

In this study, two software packages using different numerical techniques FEKO 6.3 with Finite-Element Method (FEM) and XFDTD 7 with Finite Difference Time Domain Method (FDTD) were used to assess exposure of 3D models of square,…

The increasing demand for energy-efficient solutions has led to the emergence of an approximate computing paradigm that enables power-efficient implementations in various application areas such as image and data processing. The median…

Hardware Architecture · Computer Science 2025-10-23 Vojtech Mrazek , Zdenek Vasicek

Flow-improving devices (FIDs) are used the most effectively for the reduction of noise and vibration induced by a propulsor. These devices may also increase the efficiency of a propulsor and in some cases should be considered and designed…

Fluid Dynamics · Physics 2025-03-14 Vladimir Sluchak

In this letter we report a proof-of-concept terahertz band-stop filter constructed from split-ring resonators that has a center frequency of 1.06 THz and a -3 dB bandwidth of 0.36 THz. The design consists of nine split ring resonators of…

Optics · Physics 2024-05-15 Saeid Asadi , Mohsen Haghighat , Thomas Darcie , Levi Smith

We developed a wideband quasi-optical band-pass filter covering 170-520 GHz by exploiting the recent advancements in commercially available flexible printed circuit (FPC) fabrication technologies. We designed and fabricated a three-layered…

Instrumentation and Methods for Astrophysics · Physics 2020-06-24 Shinsuke Uno , Tatsuya Takekoshi , Tai Oshima , Keisuke Yoshioka , Kah Wuy Chin , Kotaro Kohno

The conversion efficiency of electric microwave signals into surface acoustic waves in different types of superconducting transducers is studied with the aim of quantum applications. We compare delay lines containing either conventional…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Maria K. Ekström , Thomas Aref , Johan Runeson , Johan Björck , Isac Boström , Per Delsing

This letter presents the design and implementation of a compact high-efficiency octave microwave rectifier. A key highlight is the novel segmented impedance matching method, a unique approach that expands the rectifier bandwidth. The diode…

Applied Physics · Physics 2025-12-30 Haoming He , Yilin Zhou , Zhongqi He , Yuhao Feng , Changjun Liu

This paper proposes a novel approach that employs error amplification and ADC-based dual-mixer time-difference (ADC-based-DMTD) technique for high-precision locking of laser repetition frequency with compact size. This electronic system…

Optics · Physics 2025-04-17 Qibin Zheng , Zhengyi Tao , Lei Wang , Zhaohui Bu , Zuanming Jin , Zhao Wang

Exploiting of nonlinearity has opened doors into undiscovered areas for achieving multiplexed performances in recent years. Although efforts have been made to obtain diverse nonlinear architectures at visible frequencies, the room is still…

Applied Physics · Physics 2020-03-18 Mehdi Kiani , Majid Tayarani , Ali Momeni , Hamid Rajabalipanah , Ali Abdolali

We demonstrate an integrated photonic circuit based on feed forward photonic meshes that can be programmed and reconfigured to perform arbitrary spectral filter functions. We investigate a subset of the available filter functions,…

Efficient fiber-to-chip coupling has been a major hurdle to cost-effective packaging and scalable interconnections of photonic integrated circuits. Conventional photonic packaging methods relying on edge or grating coupling are constrained…

This paper proposes a low-complexity iterative receiver for the recently proposed Orthogonal Chirp Division Multiplexing (OCDM) modulation scheme, where we consider a system under frequency-selective channels and constrained to channel…

Signal Processing · Electrical Eng. & Systems 2019-03-20 Roberto Bomfin , Marwa Chafii , Gerhard Fettweis

We demonstrate a design for a high-performance $2 \times 2$ splitter meeting the essential requirements of broadband coupling, support for arbitrary coupling ratio, ultra low-loss, high fabrication tolerance, and a compact footprint. This…

This paper describes an active power filter (APF) control strategy, which eliminates harmonics and compensates reactive power in a three-phase four-wire power system supplying non-linear unbalanced loads in the presence of non-linear…

Optimization and Control · Mathematics 2012-06-11 Vin Cent Tai , Phen Chiak See , Marta Molinas , Kjetil Uhlen

This work demonstrates the first non-reciprocal network based on switched low-loss acoustic delay lines. The 4-port circulator is built upon a recently reported frequency-independent, programmable, non-reciprocal framework based on switched…

Signal Processing · Electrical Eng. & Systems 2019-09-17 Ruochen Lu , Tomas Manzaneque , Yansong Yang , Liuqing Gao , Anming Gao , Songbin Gong

Adiabatic waveguide taper and on-chip wavelength demultiplexer are the key components of photonic integrated circuits. However, these two kinds of devices which designed by traditional semi-analytic methods or brute-force search methods…

We present the design and test results of a compact C-band orthomode transducer which comprises four rectangular probes orthogonally arranged in a circular waveguide, designed to work in the WG13 band. Measurements of the system in the…

Astrophysics · Physics 2013-09-05 P. K. Grimes , O. G. King , G. Yassin , M. E. Jones

The potential of doubling the spectrum efficiency of full-duplex (FD) transmission motivates us to investigate FD millimeter-wave (FD-mmWave) communication. To realize FD transmission in the mmWave band, we first introduce possible antenna…

Information Theory · Computer Science 2017-09-26 Zhenyu Xiao , Pengfei Xia , Xiang-Gen Xia

This paper presents large-scale path loss models based on extensive ultra-wideband millimeter-wave propagation measurements performed at 28 GHz and 73 GHz in three typical indoor office layouts -- namely: corridor, open-plan, and…

Information Theory · Computer Science 2016-02-23 George R. MacCartney , Sija Deng , Theodore S. Rappaport
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