Results 21 to 30 of about 333,895 (294)
Design, Fabrication, and Test of a 5 GHz Klystron Based on the Kladistron Principle [PDF]
, 2023 A new bunching method, named “kladistron” has been developed at CEA in order to provide high-efficiency klystrons. A first “kladistron” prototype was designed and realized.
Denis, Philippe +15 more
core +1 more source
Micromachines, 2023 A triple-band substrate integrated waveguide (SIW) with dielectric resonator antenna (DRA) for fourth-generation (4G) and fifth-generation (5G) applications is proposed and analyzed in this paper.
Irene Kong Cheh Lin +2 more
doaj +1 more source
Micromachines, 2023 The key elements used for receiving and processing signals in communication systems are the bandpass filters. Initially, a common operating mechanism was applied for the design of broadband filters, i.e., by cascading low-pass filters or high-pass ...
Guoqiang Zhang +5 more
doaj +1 more source
Triple-Band MIMO Antenna with Integrated Decoupling Technology
International Journal of Antennas and Propagation, 2023 This paper proposes an integrated decoupling method that improves the flexibility of multiport, multiband antenna design and simplifies the antenna structure.
Ruihua Ma +3 more
doaj +1 more source
Comparison of QPSK and 64QAM EVM for an OFDM WLAN signal at 2.4 GHz and 4.9 GHz in a multipath environment [PDF]
2009 IEEE Antennas and Propagation Society International Symposium, 2009 Theoretically, EVM is the same for all modulation types if the channel, transmitter, and receiver are static, the signal power remains constant, and normalization is used such that the mean-square value over all symbols is unity. We confirmed this experimentally in low- and medium-distortion linear, time-invariant environments.
McKinley, M. D. +7 more
openaire +1 more source
VLA observations of impulsive solar flares at 4.9 GHz
The Astrophysical Journal, 1980 A series of snapshot synthesis maps constructed as a function of time provided a complete mapping of source structure in one dimension and absolute location in two dimensions of five impulsive solar microwave bursts observed during July 15-18, 1978. It was found that all five flares were dominated by a single 12-18 arcsec source located between the H ...
K. A. Marsh +3 more
openaire +1 more source
A dual-band microstrip patch antenna for 2.45/5-GHz WLAN applications
, 2021 A microstrip transmit patch antenna with harmonics suppression property has been designed for the 2.45/5-GHz WLAN bands. Patch antennas usually have narrow bandwidths and the 5-GHz WLAN band extends from 5.15 to 5.8 GHz, which makes the design ...
Yıldırım, Bahadır Süleyman +1 more
core +2 more sources
A CMOS Vector-Sum Phase Shifter for 5G mm-Wave Application [PDF]
Journal of Electromagnetic Engineering and Science, 2022 This paper presents a wideband CMOS vector-sum phase shifter (VSPS) targeting the n260 band of 5G communication. A differential quadrature generator is implemented using a Marchand balun and two 90° coupled-line couplers to improve robustness to process ...
Eunjung Kim +2 more
doaj +1 more source
Diode-pumped femtosecond solid-state waveguide laser with a 4.9 GHz pulse repetition rate [PDF]
, 2012 We report on the first demonstration of a passively mode-locked, diode-pumped, monolithic Yb:glass channel waveguide laser that incorporates a semiconductor saturable absorber mirror.
Shepherd, D.P. +12 more
core +1 more source
Fundamentally mode-locked Yb3+ doped glass waveguide lasers with repetition rate of up to 15.2 GHz
, 2013 Ultrafast lasers with multi-GHz repetition rates can have applications in areas such as biophotonics, optical frequency metrology, optical sampling, optical communications and as astro-combs.
Shepherd, D.P. +11 more
core +1 more source