A5024111153- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Gyrotron and Vacuum Electronics Research
- Electromagnetic Compatibility and Noise Suppression
- Photonic and Optical Devices
- Antenna Design and Analysis
- Millimeter-Wave Propagation and Modeling
- Semiconductor Lasers and Optical Devices
- Radio Frequency Integrated Circuit Design
- 3D IC and TSV technologies
- Dark Matter and Cosmic Phenomena
- Electromagnetic Simulation and Numerical Methods
- Acoustic Wave Resonator Technologies
- Electronic Packaging and Soldering Technologies
- Microwave and Dielectric Measurement Techniques
- Ultra-Wideband Communications Technology
- Particle physics theoretical and experimental studies
- Advanced Fiber Optic Sensors
- Antenna Design and Optimization
- Particle accelerators and beam dynamics
- Terahertz technology and applications
- Experience-Based Knowledge Management
- Metamaterials and Metasurfaces Applications
- Nanofabrication and Lithography Techniques
- Computational Physics and Python Applications
Universidad Publica de Navarra
2014-2023
Universidad de Navarra
2013-2018
We propose a novel experiment, the Canfranc Axion Detection Experiment (CADEx), to probe dark matter axions with masses in range 330-460 $\mu$eV, within W-band (80-110 GHz), an unexplored parameter space well-motivated window of Quantum ChromoDynamics (QCD) axions. The experimental design consists microwave resonant cavity haloscope high static magnetic field coupled highly sensitive detecting system based on Kinetic Inductance Detectors via optimized quasi-optics (horns and mirrors)....
In this paper, two novel compact diplexers for satellite applications are presented. The first covers the Ku-band with closely spaced channels (Ku-transmission band: 10.7-13 GHz and Ku-reception 13.75-14.8 GHz). second is wider than (overall bandwidth up to 50%) achieves suppression of higher order modes, Ku/K-band a reception channel between 17.2 18.5 GHz. Both composed bandpass filters, joined together an E-plane T-junction. filters designed by combining low-pass filtering function (based...
In this article, a novel design method for rectangular waveguide filters intended fabrication using direct metal additive manufacturing (AM) is proposed. The synthesized will feature smooth profile that allows us to fabricate them orienting the filter propagation axis in vertical building direction, achieving an optimum configuration AM fabrication. valid any all-pole transfer function, which initially implemented with commensurate-line distributed unit element prototype. impulse response of...
In this paper, a method to design high-power low-pass harmonic filters in rectangular waveguide technology is proposed. The new consist of collection smooth E-plane bandstop elements along the propagation direction and variation filter width. This yields broad rejected band for fundamental TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode, together with higher-order ( xmlns:xlink="http://www.w3.org/1999/xlink">n0</sub> non- ) mode...
In this paper, we propose and demonstrate a new technique for the design of arbitrary-order differentiators, intended ultra-wideband (UWB) applications in microwave coupled-line technology. The employs an exact analytical series solution synthesis problem derived by authors from coupled-mode theory. This allows devices with arbitrary frequency responses, only limited principles causality, passivity, stability. method has been successfully applied past to two-port waveguide transmission-line...
In this letter, the design of a compact high-power waveguide low-pass filter with low insertion loss, all-higher order mode suppression, and stopband rejection up to third harmonic, intended for Ka-band satellite applications, is presented. The method based on step-shaped bandstop elements separated by very short (ideally zero length) sections easily manufactured low-cost computer-controlled milling. Matching achieved input/output networks stubs whose heights are optimized following...
A novel microstrip coupled-line directional coupler with enhanced coupling factor is proposed. It based on the introduction of an electromagnetic bandgap (EBG) structure coupled lines to strongly enhance designed backward coupling. Accurate analytical expressions are obtained for main design parameters coupler. 3 dB EBG has been designed, simulated and measured, demonstrating 6.4 improvement in level when compared a classical
High-performance diplexers are frequently used in satellite systems to isolate the high-power wideband transmission band from sensitive reception frequency range. A compact broadband waveguide diplexer cover Ku and bands is proposed this paper. The overall bandwidth of up 50 %. composed an E-plane T-junction which branches a very Ku-band low-pass filter band-pass based on inductive irises. λ/4-step-shaped bandstop elements separated by short (ideally zero-length) sections provides...
A novel chirping technique is applied to the design of very high-power waveguide harmonic low-pass filters. The could be used, for instance, avoid multipactor testing in multicarrier systems such as output multiplexer a communications satellite. chirped filter shows low insertion loss, all higher order mode suppression, and broad stopband rejection up third harmonic. This paper focuses on maximization power-handling capability without affecting its excellent frequency behavior. Given certain...
In this letter, a new method for the design of high-power low-pass harmonic filters in rectangular waveguide technology is proposed. Based on 2-D arrangement bandstop elements sinusoidal profile, filter with wide spurious-free frequency response (up to third harmonic) fundamental TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode, as well higher-order xmlns:xlink="http://www.w3.org/1999/xlink">n0</sub> -mode suppression, achieved....
In this paper, a new topology for rectangular waveguide bandpass and low-pass filters is presented. A simple, accurate, robust design technique these novel meandered provided. The proposed employ concatenation of ±90° E -plane mitered bends (±90° EMBs) with different heights lengths, whose dimensions are consecutively independently calculated. Each EMB satisfies local target reflection coefficient along the device so that they can be calculated separately. structures allow drastically reduce...
A rectangular waveguide band-pass filter with very low sensitivity to fabrication tolerances is proposed. The novel exploits the inherent first passband replica of commensurate-line stepped-impedance low-pass filters. Waveguide width reduction also exploited obtain a significant enhancement in yield. This improvement especially attractive for space applications millimeter-wave range. validity design technique has been demonstrated 13 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
A lower-loss, more compact alternative to the classical E-plane corrugated waveguide low-pass filter is proposed in this paper. The novel design capable of achieving very steep slopes fundamental TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> -mode frequency response along with a drastic reduction terms insertion loss and size. method based on step-shaped bandstop elements separated by short sections. Moreover, matching achieved...
To design a filter for particular application, many issues must first be considered. Which technology will the most convenient? What technique provide better results set of frequency specifications? Once device has been designed, it fulfill all (not only electrical) requirements? It is not always easy to answer such questions in advance. In this article, we try shed some light on these when our aim filters high-power operation.
Abstract In this article, an analytical solution is obtained for the design of electromagnetic bandgap (EBG) structures that feature a single stopband without spurious rejected bands present in conventional EBG devices at harmonics frequency.The proposed technique applied microwave filters intended broadband applications, where closed formulas are found both two‐port lines and four‐port coupled obtaining very good results. The implementation structure allows redirection reflected signal to...
In this paper, we propose a novel synthesis strategy for the design of one dimensional electromagnetic bandgap (1-D-EBG) structures where all performance parameters these devices can fully be controlled, i.e., central frequency forbidden band, its attenuation level and bandwidth, ripple at passbands. The employs new inverse-scattering technique to accurately synthesize 1-D-EBG structure, targeting properly interpolated version classical periodic filter fulfilling required specifications....
Novel synthesized passive components in microstrip technology, rectangular waveguide and coupled-line technology have been successfully designed, easily fabricated, accurately tested for very different applications. A palette of novel microwave synthesis techniques has surveyed discussed this article, confirming that they represent a powerful tool set the design emerging demanding needs fields wireless applications, biomedical engineering, satellite communications.
In this work an overview of the different additive manufacturing techniques will be presented. Each technique compared in terms dimensional accuracy, surface roughness, and quality taking into account most suitable applications for each one. Then, two studied: (a) fast prototyping waveguide component designs using professional grade 3D printers electromagnetic validation purposes, (b) printing hardware products as a production technology printers. The first application studied with research...
In this paper, a novel microstrip directional coupler with high directivity and coupling is proposed. It based on the introduction of an electromagnetic bandgap (EBG) structure coupled lines to strongly enhance desired backward at design frequency. The use technology implies that even odd modes propagate different speeds. This property causes frequency dependent interchange energy between direct isolated ports. By adjusting total length device in order achieve null port frequency, very (51.2...
A simple, quasi-analytical, and accurate method to design classical corrugated rectangular waveguide low-pass filters is presented in this paper. Unlike other published techniques, the dimensions of final filter are directly obtained a quasi-analytical manner following exclusively closed-form expressions and, particular, using neither electromagnetic simulation nor optimization. Thus, our amenable be implemented an off-the-shelf mathematical software tool such as Matlab. The proposed based...
In this letter, a methodology is proposed for the design of electromagnetic band-gap (EBG)-assisted coupled-line structures in microstrip technology, controlling independently forward and backward coupling. It based on use single-frequency-tuned EBG structure to produce single backward-coupled frequency band, combination with forward-coupled bands produced by difference between even- odd-mode propagation constants present technology. Thus, central band controlled period structure, while...
In this paper, a multipactor analysis of new type high-power low-pass harmonic filter in rectangular waveguide technology is performed. The designed following novel technique which permits to obtain filtering function with suppression the fundamental and all higher-order modes over wide frequency band. This achieved by means smooth variation height width. Although much larger minimum mechanical gaps than ones classical techniques can be obtained proposed method, profile topology enough...
An in-depth secondary emission characterization for metal additive manufactured samples has been performed to assess the impact of surface roughness in this parameter. Three 3D printed, post-processed with two different treatments and tested. The results shown a improvement considering as-built parts while is getting closer flat aluminum values when post-process improving applied. from additively surfaced could be exploited reduce and, hence, increase power multipactor discharge.