3-D-printed modified butler matrix based on gap waveguide at W-band for monopulse radar

Tamayo Domínguez, Adrián and Fernández González, José Manuel and Sierra Castañer, Manuel (2019). 3-D-printed modified butler matrix based on gap waveguide at W-band for monopulse radar. "Ieee Transactions on Microwave Theory And Techniques", v. 68 (n. 3); pp. 926-938. ISSN 0018-9480. https://doi.org/10.1109/TMTT.2019.2953164.

Description

Title: 3-D-printed modified butler matrix based on gap waveguide at W-band for monopulse radar
Author/s:
  • Tamayo Domínguez, Adrián
  • Fernández González, José Manuel
  • Sierra Castañer, Manuel
Item Type: Article
Título de Revista/Publicación: Ieee Transactions on Microwave Theory And Techniques
Date: December 2019
ISSN: 0018-9480
Volume: 68
Subjects:
Freetext Keywords: Additive manufacturing; butler matrix; distribution network; groove gap waveguide (GGW); low cost; low loss; low profile; low weight; monopulse; point-to-point communications; radar; space debris; W-band
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This article presents the design and fabrication of low-loss, -weight, and -cost, modified Butler matrix in groove gap waveguide technology at W-band, implemented by additive manufacturing. The design, simulations, and measurements of each of the elements that conform to the modified Butler matrix are presented. The proposed modified Butler matrix is asymmetric and oriented to an easy assembly with a radial antenna in order to obtain simultaneous sum and difference patterns for a narrowband radar application. The measured individual components of the modified Butler matrix fit very well with the simulations. As for the full modified Butler matrix, measurements provide a 0.7% bandwidth below -20 dB for sum and difference ports centered at 94 GHz. The amplitude and phase imbalance are below 1.5 dB and 20°, respectively. This narrow bandwidth is due to the difference in length between input and output ports due to the asymmetry of the design. The total losses of the modified Butler matrix are below 1 dB.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2014-55735-C3-1-RENABLING-5GUnspecifiedEnabling Innovative Radio Technologies For 5GNetworks
Government of SpainBES-2015-075230UnspecifiedUnspecifiedFormación de Personal Investigador (FPI)
Government of SpainTEC2017-85529-C3-1-RFUTURE-RADIOUnspecifiedRadio Systems and Technologiesfor High Capacity terrestrial and Satellite Communications in anHyperconnected World
Government of SpainS2013/ICE-3000SPADERADARUnspecifiedSpace Debris Radar

More information

Item ID: 63826
DC Identifier: http://oa.upm.es/63826/
OAI Identifier: oai:oa.upm.es:63826
DOI: 10.1109/TMTT.2019.2953164
Official URL: https://ieeexplore.ieee.org/document/8933338
Deposited by: Memoria Investigacion
Deposited on: 10 Nov 2020 15:24
Last Modified: 10 Nov 2020 15:24
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