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Showing 1 to 20 of 56 for “"noise figure"”.
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Gain and Noise Performance of Bi/Er Co-Doped Fibre Amplifiers
… models are explored to analyse net gain and noise figure performance of BEDFAs. And the optimized design of the BEDFA with desirable net gain and noise figure are provided. Firstly, some basic experiment techniques relevant to fibre amplifiers characteristics, including emission, …
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Self mixing oscillators at Q-band using Gunn diode solid state sources
… into their proper context. Areas discussed are NOISE FIGURE, TRANSMISSION PATH LOSS and GUNN DIODE operation. The second section (Chapter 3) considers the operation of the device as a mixer. Its operation as a Microwave Power Source is a well-known concept and it will not be discussed here. This …
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CMOS bulk-driven mixers with passive baluns
… point (IIP3) of −5.2 dBm, a gain of 13.6 dB, a noise figure (NF) of 26 dB, and an LO-to-RF isolation of 50 dB. The overall performance of both mixers is found to be comparable with other CMOS mixers, but with a higher noise figure (which can be mitigated with a high gain low-noise amplifier …
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Design of a Low Noise Amplifier for Wireless Sensor Networks
… In a high performance radio receiver, the Low Noise Amplifier (LNA) is the first circuit, and its noise performance dominates the entire receiver. Depending upon the system in which they are used, LNAs can be designed according to various topologies and structures. The LNA needs to have matched …
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An airborne X-band synthetic aperture radar receiver design and implementation
… reflector as maximum input power and thermal noise as the minimum input power to the receiver. The output of the receiver, which has to be fed to the input of an analogue-to-digital converter (ADC), is limited by the ADC's maximum operating input power. Amplifiers, attenuators and mixers were …
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Design of a Highly Linear 24-GHz LNA
… low NF LNA design. Depending on its gain, the noise figure of the next stages can relax. However, the high gain of an LNA enforces the next stages to be more linear since they suffer from larger signal at their input stage and can get saturated easily. Apparently, designing high gain, low …
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Development of Methodology for Achieving Reliable GPS Performance In 3G Handset Noisy Environments
… with the performance of the GPS due to TX band noise injected into the GPS band. For the case of WCDMA, the problem is out-of-band interference due to its TX wide band noise, which has a spectrum that overlaps the GPS spectrum; both use spread spectrum technology to encode the data.</p> …
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Design of low noise amplifier for ultra-wideband applications
… is focused on the analysis and design of a low noise amplifier (LNA) for UWB applications. First, two popular narrowband topologies based on inductively degenerated common-source and common-gate configurations are introduced. A comparison between these two topologies is also presented. Then, …
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SiGe receiver front ends and flip-chip integrated wideband antennas for millimeter-wave passive imaging
… performance with the highest gain and lowest noise figures reported thus far for silicon-based systems in the 77-GHz and 94-GHz frequency regimes, to the best of the author's knowledge. These systems each comprise a fully differential integrated antenna, LNA, and a double-balanced mixer. A …
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Silicon-Based PALNA Transmit/Receive Circuits for Integrated Millimeter Wave Phased Arrays
… problem of switchless power amplifier/low-noise amplifier (PALNA) matching networks, which present optimal matching impedances to both the power amplifier (PA) and the low noise amplifier (LNA) while maximizing power transfer efficiency and minimizing dissipative losses in each (transmit or …
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The Effect Of Hot Carrier Stress On Low Noise Amplifier Radio Frequency Performance Under Weak And Strong Inversion
… on studying RF performance degradation of a low noise amplifier (LNA) circuit due to hot carrier effect (HCE) in both the weak and strong inversion regions. Since the figures of merit for the RF circuit characterization are gain, noise figure, input, and output matching, the LNA RF performance …
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Concept Demonstrator for MeerKAT Operation from 14.5 to 20 GHz
… free dynamic range (SFDR). The simulated noise figure of the system using the measured noise figure of the LNA is 1.74 dB. The measured gain flatness of the receiver is ±7 dB due to poor performance of one of the amplifier modules used in the system.
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Frequency translation method for low frequency variable gain amplification and filtering
… A Single Side Band system has a Signal-to-Noise Ratio (SNR) of 71dB with a 73dB SNR Analog-to-Digital Converter (ADC), 44 dB Output Third-Order Intercept Point (OIP3), and a Noise Figure (NF) of 14dB. Ultrasound and other applications in the 1-10MHz range benefit greatly from this …
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Monte Carlo simulation for high-frequency intrinsic noise analysis of MOSFET
… a Monte Carlo simulation of intrinsic electronic noise in MOSFETs. Brief reviews of the important aspects of carrier transport, band structure, and Monte Carlo technique are discussed. Based on full band 2D Monte Carlo simulation, a noise analysis platform is utilized. To this end, accurate …
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A High Temperature Wideband Low Noise Amplifier
… paper presents a high temperature wideband low noise amplifier (LNA) with zero temperature coefficient maximum available gain (ZTCMAG) biasing for a downhole communication system. The proposed LNA is designed and prototyped using 0.25μm GaN on SiC RF transistor technology, which is chosen due to …
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Adaptive Blocker Cancellation For Wireless Receivers
… The receiver front-end operates at 1.8GHz with a noise figure of 3.9dB, IIP3 of -5dBm, and consumes only 20.4–37.5mW, the lowest among state-of-the-art designs.
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A 0.78mm² Co-Channel Interference Canceller in 130nm SOI RF CMOS with Novel Passive Phase Shifters and Combiner Circuitry
… The measured IIP3 was +7dBm and the measured noise figure was 1.5dB with 14dB of LNA gain at 2.2GHz.
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Modeling gallium-nitride based high electron Mobility transistors : linking device physics to high voltage and high frequency circuit design
… and power-sweep, inter-modulation-distortion and noise-figure of both HV- and RF-devices. The thesis also aims to tie device-physics concepts of carrier transport and charge distribution in GaN HEMTs to circuit-design through circuit-level evaluation. In the HV-application regime benchmarking is …
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A Power Constrained 433-MHz Low Noise Amplifier
<p>Within wireless communication systems, low noise amplifiers are critical for the performance of receivers. They are primarily responsible for providing enough gain while adding little noise to overcome the noise of the subsequent stages. The LNA presented here is part of a battery-powered …
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Parallel integrated receivers for multiple antenna wireless LAN systems
… that are functions of distance, data rate, and noise figure and incorporate the behavior of a multiple-input, multiple-output channel and power dissipation and area consumption values for typical RF circuits. These models properly balance benefits of multiple antennas with drawbacks due to …
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