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Novel Multi-band Planar Monopole Antenna for Multi-band Wireless Systems
2006 European Microwave Conference, 2006A new multi-band and wideband planar monopole antenna is presented. The proposed antenna consists of a wideband planar monopole antenna and the band-notched slots. In order to generate quad-band characteristic, the authors insert three U-shaped slots in the wideband planar monopole which have the same edge point and are connected.
Wang-sang Lee +3 more
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Wide/Multi-band Linearized TWTAs
2007 IEEE International Vacuum Electronics Conference, 2007This paper will discuss the state of the art in achieving wideband linearization of TWTAs. Multi octave bandwidth linearization has been achieved at frequencies from L through Ka-band. The trades between using a single predistortion linearizer and multi-band linearizers will be discussed.
Allen Katz, Robert Gray, Roger Dorval
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Multi-band Fractal Microwave Absorbers
2018Multi-band fractal microwave absorbers are proposed to operate within the UHF-RFID band and/or the GSM frequency bands. The miniaturization capabilities offered by the adopted fractal geometry are exploited to design multi-band absorber unit cells having small size (less than half-wavelength) and a very thin substrate thickness (≤λ0/100 at the ...
Venneri, Francesca +2 more
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Multi-band ultra wide band antennas
2005 European Microwave Conference, 2005This paper presents 3D ultra wide band antennas modified to be multi band UWB antennas. The solution consists in creating stubs in the shape of the antenna to realize one or more filtering functions. A study of various topologies has been made and a model has been developed to control the creation of stop bands in the matching bandwidth of the antenna.
I. Pele, A. Chousseaud, S. Toutain
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Multi-band miniaturized slot antenna with multi-band impedance matching circuit
Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation, 2014This manuscript describes the design and implementation of miniaturized slot antenna with two-stage impedance matching circuit for 800MHz and 2GHz up and down link multiband application. The impedance matching circuit is based on the 2-stage band-pass filter (BPF).
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Multi-band Polarization Imaging
2016Establishing a multi-band polarization imaging system is the premise of acquiring accurate multi-band polarization information. However, the acquired polarization and spectral data can be noisy and less accurate in the sensing process due to the factors such as dark current, positioning error, and the transmittance in different wavelengths.
Yongqiang Zhao +4 more
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1996
Abstract Furthermore, these intervals are to be separated by gaps which a.re themselves intervals of positive length. It will be recalled from Definition 6.19 that such a function is called multi-band.
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Abstract Furthermore, these intervals are to be separated by gaps which a.re themselves intervals of positive length. It will be recalled from Definition 6.19 that such a function is called multi-band.
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IEEE Antennas and Propagation Society Symposium, 2004., 2004
Enhancing the operational capability of current sensors and radar systems to detect targets at long ranges and map the terrain in all kinds of weather is a well-accepted measure. Multi-target tracking would require multi-beam, multi-band scanning phased array antennas. Therefore, in order to meet the current challenges, current sensor systems and radar
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Enhancing the operational capability of current sensors and radar systems to detect targets at long ranges and map the terrain in all kinds of weather is a well-accepted measure. Multi-target tracking would require multi-beam, multi-band scanning phased array antennas. Therefore, in order to meet the current challenges, current sensor systems and radar
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2011
A new low cost antenna for high-precision applications in Global Navigation Satellite Systems (GNSS) is described. The antenna has been designed to operate for all existing satellite navigation frequencies in L-band including GPS, GLONASS, Galileo and Compass (1164–1300MHz and 1559–1610MHz).
Alexander E. Popugaev, Rainer Wansch
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A new low cost antenna for high-precision applications in Global Navigation Satellite Systems (GNSS) is described. The antenna has been designed to operate for all existing satellite navigation frequencies in L-band including GPS, GLONASS, Galileo and Compass (1164–1300MHz and 1559–1610MHz).
Alexander E. Popugaev, Rainer Wansch
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Multi-band automatic speech recognition
Computer Speech & Language, 2001This paper presents a new architecture for automatic speech recognition systems which is characterized by the division of the spectral domain of the speech signal into several independent frequency bands. This model is based on the psycho-acoustic work of Fletcher (1953) who proposed a similar principle for the human auditory system. Jont B.
Cerisara, Christophe, Fohr, Dominique
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