Results 11 to 20 of about 5,099,079 (342)
Design of BDS-3 RDSS low noise amplifier based on millimeter wave tube
Dianzi Jishu Yingyong, 2020 The existing Beidou signal receiver has a low-noise amplifier scheme in the S-band, and the noise figure is between 1.5 dB～1.7 dB under the condition of meeting the gain requirements and the noise performance can be further optimized.
Huang Shijin, Lai Songlin, Wang Yunan
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Micromachines, 2023 In this paper, AlGaN/GaN high-electron-mobility transistors (HEMTs) with ohmic etching patterns (OEPs) “fabricated to improve device radio frequency (RF) performance for Ka-band applications” are reported.
Ming-Wen Lee +4 more
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Influence of current reuse LNA circuit parameters on its noise figure [PDF]
Serbian Journal of Electrical Engineering, 2009 A 2.4 GHz low noise amplifier (LNA) with a bias current reuse technique is proposed in this work. To obtain the optimum noise figure (NF) value, dependence of NF on its most influential LNA parameters has been analyzed. Taking into account the LNA design
Radić Jelena +2 more
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Micromachines, 2023 We present here a performance comparison of quantum-dash (Qdash) semiconductor amplifiers (SOAs) with three, five, eight, and twelve InAs dash layers grown on InP substrates. Other than the number of Qdash layers, the structures were identical. The eight-
Youxin Mao +17 more
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A Noise Investigation of Tunnel-Diode Microwave Amplifiers [PDF]
, 1961 An analysis and derivation of the noise figure of a tunnel-diode microwave amplifier are presented. The agreement between the measured noise figure and the theoretical results is an indirect check on the existence of full shot noise in germanium tunnel ...
Cook, J. S., Yariv, A.
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Practical Noise Model of an Active Electronically Scanning Array
International Journal of Antennas and Propagation, 2023 Active electronically scanning arrays are now widely used in radar and communication systems. The noise characteristics are critical to the system signal-to-noise ratio, thus modeling of the antenna array noise is useful.
Jian Mi, Kan Wang, Zhao Li, Hongbing Sun
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Towards Cryophotonics: Experimental Characterization of SOA at Cryogenic Temperatures
IEEE Photonics Journal, 2023 We present an experimental system study of the influence of cryogenic temperatures on the performance of a commercial Semiconductor Optical Amplifier (SOA) over the range 240 K – 70 K.
Maeva Franco +3 more
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Gain and Noise Figure Performance of Erbium-Doped Fiber Amplifiers [PDF]
Kirkuk Journal of Science, 2008 Fiber loss is a fundamental limitation in realizing long haul point–to-point fiber optical communication links and optical networks. One of the advanced technologies achieved in recent years is the advent of erbium doped fiber amplifiers (EDFAs) that has
Banaz O. Rashid, Perykhan.M. Jaff
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Impact of AlGaN Barrier Thickness and Substrate Material on the Noise Characteristics of GaN HEMT
IEEE Journal of the Electron Devices Society, 2022 In this paper, the impact of AlGaN barrier thickness ( $\text{t}_{\mathrm{ AlGaN}}$ ) and substrate leakage on the noise conductance and noise figure in GaN High Electron Mobility Transistor (HEMT) is investigated.
Anwar Jarndal +5 more
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Excess noise for coherent radiation propagating through amplifying random media [PDF]
, 1999 A general theory is presented for the photodetection statistics of coherent radiation that has been amplified by a disordered medium. The beating of the coherent radiation with the spontaneous emission increases the noise above the shot-noise level.
Beenakker, C. W. J., Patra, M.
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