Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Ibrahim T. Nassar"'
Publikováno v:
IEEE Sensors Journal. 15:5036-5044
This paper presents a compact, energy-efficient, passive, and wireless vibration sensor node for embedded monitoring. The narrowband radio frequency (RF) communication system employs a frequency doubler on the sensor node to return the second harmoni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e1acab50a3c2cc2528260f0b79d5724
https://doi.org/10.1109/jsen.2015.2432807
https://doi.org/10.1109/jsen.2015.2432807
Autor:
Thomas M. Weller, Ibrahim T. Nassar
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:3321-3324
Herein, a new method for improving the directivity and bandwidth of the antipodal Vivaldi antenna structure is presented. The method is based on introducing a parasitic elliptical patch in the flare aperture to enhance the field coupling between the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e10895d13689132180840635c77e0d0
https://doi.org/10.1109/tap.2015.2429749
https://doi.org/10.1109/tap.2015.2429749
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:3267-3271
Mechanically reconfigurable dual-band slot dipole antennas with wide tuning ranges are developed in this communication. The dual-band operation is achieved by inserting parallel slots with different lengths and the tuning is realized by incorporating
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7c63756cb8f1d3f4ea5ca2286fdf921
https://doi.org/10.1109/tap.2015.2423699
https://doi.org/10.1109/tap.2015.2423699
Autor:
Ibrahim T. Nassar, Thomas M. Weller
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:287-294
A compact 3-D dual-channel transceiver for passive wireless sensor node design is described herein. The transceiver contains two harmonic repeaters, one to be connected to a sensor and one to provide a reference signal for remote channel calibration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfe92fcd1494d0dd8443231af03b1956
https://doi.org/10.1109/tmtt.2014.2375234
https://doi.org/10.1109/tmtt.2014.2375234
Publikováno v:
IEEE Transactions on Antennas and Propagation. 61:2861-2864
In this communication a new approach for realizing a reconfigurable microstrip patch antenna is proposed on the basis of radially-foldable linkage kinematic theory. Using a Hoberman's planar foldable linkage, in which rotation in the $\phi$ -directio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4051c16cae13b79786334e028d84457a
https://doi.org/10.1109/tap.2013.2243094
https://doi.org/10.1109/tap.2013.2243094
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:3309-3316
A high-efficiency 3-D harmonic repeater for narrow band, wireless sensing applications is described herein. This repeater consists of a diode doubler and conjugate-matched 3-D receive and transmit antennas. The antennas are designed on the surface of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc391b500d1bcc3a0d84d2eb432c43bc
https://doi.org/10.1109/tmtt.2012.2210440
https://doi.org/10.1109/tmtt.2012.2210440
Autor:
Thomas M. Weller, Ibrahim T. Nassar
Publikováno v:
IEEE Transactions on Antennas and Propagation. 60:1059-1065
3-D antennas for narrow band, wireless sensor node applications are described herein. The antennas were designed on the surface of a cube which makes available the cube interior for sensor electronics placement. The layout of each antenna consists of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4804da88da44b189a591d92921c467fd
https://doi.org/10.1109/tap.2011.2173121
https://doi.org/10.1109/tap.2011.2173121
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).
This paper presents a miniaturized, light-weight, log-periodic dipole antenna fabricated with 3-D printing techniques. The antenna substrate is built of Acrylonitrile Butadiene Styrene material using the fused deposition modeling process and then met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b26a2846dd84cac7c32039c3dda4812
https://doi.org/10.1109/aps.2014.6904337
https://doi.org/10.1109/aps.2014.6904337
Publikováno v:
WAMICON 2014.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fa194e19dbf7df6490ac07cefe7721e
https://doi.org/10.1109/wamicon.2014.6857741
https://doi.org/10.1109/wamicon.2014.6857741
Publikováno v:
RWS
This paper presents a high efficiency, electrically-small, light-weight, 3-D machined-substrate antenna. The antenna is a half-wave dipole conformed into a cubical shape and has an integrated parallel plate balun for the feed. The operational frequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::582f1ae232cc94488ce463abd1b1b159
https://doi.org/10.1109/rws.2014.6830137
https://doi.org/10.1109/rws.2014.6830137