Results 261 to 270 of about 22,648 (287)
Some of the next articles are maybe not open access.
2018
In this chapter, we focus on these modern challenges faced by wideband array designers, and the substantial advancements which have been made over the past 5 years. Initially, we provide a review of UWB array designs to familiarize the reader with the two most common groups of UWB arrays.
Markus H. Novak, John L. Volakis
openaire +1 more source
In this chapter, we focus on these modern challenges faced by wideband array designers, and the substantial advancements which have been made over the past 5 years. Initially, we provide a review of UWB array designs to familiarize the reader with the two most common groups of UWB arrays.
Markus H. Novak, John L. Volakis
openaire +1 more source
IEEE International Symposium on Phased Array Systems and Technology, 2003., 2004
There is a need for ultra-wideband phased arrays for military applications such as multifunction, EW, and ESM systems. This need was addressed on the DARPA reconfigurable aperture (RECAP) program, with a goal of a 10:1 bandwidth array aperture. Previous aperture designs covered 3 or 5:1 bandwidths [Hemmi, C, et al., March 1999, Chio, T.H., et al., Sept.
R.T. Dover +3 more
openaire +1 more source
There is a need for ultra-wideband phased arrays for military applications such as multifunction, EW, and ESM systems. This need was addressed on the DARPA reconfigurable aperture (RECAP) program, with a goal of a 10:1 bandwidth array aperture. Previous aperture designs covered 3 or 5:1 bandwidths [Hemmi, C, et al., March 1999, Chio, T.H., et al., Sept.
R.T. Dover +3 more
openaire +1 more source
Ultra-wideband sources and antennas
Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 2002Ultra-Wideband (UWB) sources and antennas are of interest for a variety of potential applications that range from transient radar systems to communications systems. In this paper, we discuss the research issues and progress being made in gas, oil and solid state switching, UWB sources, and antennas.
William D. Prather +10 more
openaire +1 more source
Ultra-Wideband and Its Capabilities
BT Technology Journal, 2003Ultra-wideband (UWB) can be seen as a disruptive technology for business and home wireless networking. Research into UWB systems can be dated back to the early 1960s, but until recently the main focus has been on radar-based, military secure radio and intrusion detection systems, as the short pulses of the signal results in very accurate timing ...
X. Gu, L. Taylor
openaire +1 more source
ULTRA: Wideband Ground Penetrating Radar
2006 European Radar Conference, 2006The frequency range employed in ground penetrating radar (GPR) systems is generally limited to 2 GHz because media loss increases dramatically at higher frequencies. Nevertheless, a series of applications exists in the Cultural Heritage field where the development of high frequency systems would significantly benefit, in terms of resolution, from an ...
PARRINI, FILIPPO +7 more
openaire +1 more source
Design studies of ultra-wideband microstrip antenna for ultra-wideband communication
2009 Loughborough Antennas & Propagation Conference, 2009This paper presents a circular printed monopole antenna for the Ultra-Wideband (UWB) applications. The antenna achieved over all bandwidth of 120% from operating frequency from 3.1 to 11.5 GHz for return loss
S. Adnan +5 more
openaire +1 more source
2012
Chipless RFID tags require a significant amount of spectrum in order to encode their data. Hence, ultra wideband antennas seem like the obvious solution as the antenna of choice for the chipless RFID tag. The theory of operation and parametric study of circular disc monopole antennas printed on dielectric laminates is presented.
Stevan Preradovic +1 more
openaire +1 more source
Chipless RFID tags require a significant amount of spectrum in order to encode their data. Hence, ultra wideband antennas seem like the obvious solution as the antenna of choice for the chipless RFID tag. The theory of operation and parametric study of circular disc monopole antennas printed on dielectric laminates is presented.
Stevan Preradovic +1 more
openaire +1 more source
Ultra-Wideband Electromagnetics
1997Abstract : Electromagnetic models have been developed for foliage-penetrating radar and have been transitioned to the Army Research Laboratory (Adelphi, MD) for target classification algorithms.
openaire +1 more source