Results 201 to 210 of about 76,234 (259)
Some of the next articles are maybe not open access.
An ultra-wideband receiving antenna array
2013 IEEE International Symposium on Circuits and Systems (ISCAS2013), 2013An UWB impulse radio receiving antenna array based on delay and sum beamforming is presented. The array is implemented using a simple impulse radio radar transceiver. The presented radar transceiver is fabricated in 90 nm TSMC technology, and it has a high speed sampler with sampling rate of 10 GHz which recovers the received signal with sufficient ...
Malihe Zarre Dooghabadi +2 more
openaire +1 more source
Novel antennas for ultra‐wideband communications
Microwave and Optical Technology Letters, 2004AbstractTwo novel antennas for UWB communications, both inspired from bowtie and triangular patch structures, are presented and tested. This paper proposes their study and optimization in order to cover the new WPAN standard and facilitate their integration on communication devices.
Fortino, Nicolas +3 more
openaire +1 more source
Design of a directive ultra-wideband antenna
2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007This work presents a novel directive Ultra-Wideband (UWB) antenna. The antenna shows an average gain of 7 dB over the band of interest (i.e., 4-10 GHz) with a return loss better than -10 dB. A broadband balun is also included in the realization. The antenna transfer function has been measured and the effect on pulse transmission has been evaluated ...
F. Merli +3 more
openaire +2 more sources
IEEE Sensors Journal, 2018
The electrical properties of the cancer affected cell or malignant tumor cell are completely different from normal healthiest breast tissue. Specific absorption rate (SAR) is used as one of the best parameter to identify the malignant tissue in breast ...
Suresh Subramanian +2 more
semanticscholar +1 more source
The electrical properties of the cancer affected cell or malignant tumor cell are completely different from normal healthiest breast tissue. Specific absorption rate (SAR) is used as one of the best parameter to identify the malignant tissue in breast ...
Suresh Subramanian +2 more
semanticscholar +1 more source
Increasing directionality of planar ultra‐wideband antennas
Microwave and Optical Technology Letters, 2009AbstractA directional planar ultra‐wideband antenna is described and characterized through numerical and experimental results. The antenna is composed of a disc monopole fed by a 50‐Ω microstrip line with an L‐shaped ground plane. Simulations and measurements performed in an anechoic chamber demonstrate that the structured ground plane behaves as a ...
LOCATELLI, Andrea +7 more
openaire +4 more sources
AEU - International Journal of Electronics and Communications, 2018
This paper presents a bandwidth enhanced, compact planar ultra-wideband antenna design for wireless personal area communication (WPAN) applications. The proposed antenna has fractal based geometry and is constructed using several iterations of a pentagon
Susila Mohandoss +4 more
semanticscholar +1 more source
This paper presents a bandwidth enhanced, compact planar ultra-wideband antenna design for wireless personal area communication (WPAN) applications. The proposed antenna has fractal based geometry and is constructed using several iterations of a pentagon
Susila Mohandoss +4 more
semanticscholar +1 more source
Microwave and optical technology letters (Print), 2021
In this letter, a characteristic mode analysis method is presented for ultra‐wideband radar cross‐section (RCS) reduction of microstrip antenna. By analyzing the magnitude of the modal weighting coefficients (MWCs), the important scattering modes can be ...
Yakun Liu, B. Du, Dan Jia, Yongtao Jia
semanticscholar +1 more source
In this letter, a characteristic mode analysis method is presented for ultra‐wideband radar cross‐section (RCS) reduction of microstrip antenna. By analyzing the magnitude of the modal weighting coefficients (MWCs), the important scattering modes can be ...
Yakun Liu, B. Du, Dan Jia, Yongtao Jia
semanticscholar +1 more source
Research on Ultra-Wideband Antenna
2008 4th International Conference on Wireless Communications, Networking and Mobile Computing, 2008This paper introduces the character and requirement of UWB antenna based on microstrip quasi-horn, horn, abnormity monopole, microstrip meandered-loop and biconcial omni-directional antenna. Several types of antenna for UWB are reviewed. These antennas are simulated and compared. These improvements are provided.
Xiaojuan Chen, Lianlian Li
openaire +1 more source
Miniaturization of ultra-wideband antennas
2008 Asia-Pacific Microwave Conference, 2008This talk briefly introduces design challenges of ultra-wideband (UWB) antennas. An outlined of special design considerations are presented from a systems point of view, followed by some state-of-the-art solutions. Then, the miniaturization technology of UWB antennas is addressed.
openaire +1 more source
, 2021
In this paper, the gradient elliptical slots (ES) are designed to enhance the operating bandwidth of the Vivaldi antenna (VA) in the relatively low frequency band.
Shaopeng Pan +5 more
semanticscholar +1 more source
In this paper, the gradient elliptical slots (ES) are designed to enhance the operating bandwidth of the Vivaldi antenna (VA) in the relatively low frequency band.
Shaopeng Pan +5 more
semanticscholar +1 more source