Results 21 to 30 of about 776,777 (280)
Towards a hardware implementation of ultra-wideband beamforming [PDF]
, 2010 This paper discusses and analyses the hardware implementation of an ultra-wideband (UWB) beamformer for UWB Impulse Radio data transmission. We use a Complex Programmable Logic Device (CPLD) acting as the binary baseband information source.
Wolfgang Gartner +9 more
core +1 more source
Influence of the Antennas on the Ultra-Wideband Transmission
EURASIP Journal on Advances in Signal Processing, 2005 Summary: Spectrum is presently one of the most valuable goods worldwide as the demand is permanently increasing and it can be traded only locally. Since the United States Federal Communications Commission (FCC) has opened the spectrum from 3.1 GHz to 10.6 GHz, that is, a bandwidth of 7.5 GHz, for unlicensed use with up to -41.25 dBm/MHz EIRP, numerous ...
Sörgel, W., Wiesbeck, Werner
openaire +3 more sources
International Journal of Antennas and Propagation, 2023 In this paper, a noninvasive bone fracture monitoring system is developed using a planar monopole antenna. The proposed antenna provides an ultra-wideband response, and its overall size is 18 × 19 × 0.8 mm3.
Shaik Rizwan +2 more
doaj +1 more source
Design of Multiband Balanced Folded Dipole Antenna Based on a Dual-Arm Structure for Mobile Handsets [PDF]
, 2008 YesIn this paper, a balanced antenna for mobile handset applications with enhanced bandwidth performance, that covers four bands (GSM1800, GSM1900, UMTS and 2.4-GHz WLAN), is investigated.
Abd-Alhameed, R.A. +7 more
core +5 more sources
Liquid Crystal Polymer-Based Flexible Trap Ultra-Wideband Antenna Design
International Journal of Antennas and Propagation, 2023 The wearable ultra-wideband antenna that is appropriate for body area networks is designed and implemented in this article. Stepped circular radiation patches, microstrip feeders, and trapezoidal floors make up the majority of the antenna.
Xinwei Wang +4 more
doaj +1 more source
, 2015 The focus of UWB antenna research activity has matured in recent years and currently mainly concentrates on applications such as biomedicine and security. Early UWB antenna designs were driven by the FCC allocation of spectrum in 2002 and focussed on obtaining wide impedance bandwidths with reasonable group delay characteristics.
Ammann, Max +2 more
openaire +3 more sources
An Ultra-Wideband Ridged Biconical Multibeam Antenna
IEEE Access, 2023 This paper presents an ultra-wideband multibeam antenna with eight radiating elements that are connected to the central cylindrical part. Each radiating element consists of a TEM horn fed by a coaxial to ridged planar waveguide transition. The connection
Mahdi Zoghi +2 more
doaj +1 more source
Reconfigurable wideband patch antenna for cognitive radio [PDF]
, 2009 Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF +14 more
core +1 more source
Antenna and radio channel characterisation for low‐power personal and body area networks [PDF]
, 2012 PhDThe continuous miniaturisation of sensors, as well as the progression in wearable electronics, embedded software, digital signal processing and biomedical technologies, have led to new usercentric networks, where devices can be carried in the user’s
Khan, Mohammad Monirujjaman
core +4 more sources
Design of ultra-wideband low-profile antenna based on Vivaldi
Dianzi Jishu YingyongIn response to the demand for miniaturized ultra-wideband radar systems, a novel ultra-wideband low-profile antenna array is designed with close coupling between antenna elements achieved through a cross-coupling structure.
Guo Dejia, Sun Huifeng
doaj +1 more source