Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"Low Noise Amplifier (LNA)"”.
-
Radio frequency circuit design and packaging for silicon-germanium hetrojunction bipolar technology.
… Chapter 2 presents the methodology of the low noise amplifier (LNA) design and discusses the trade-off between the noise and gain matching. The technique for achieving simultaneous noise and gain matching for the LNA is also presented. Chapter 3 presents an L-band cascaded feedback SiGe low …
-
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 …
-
A High Temperature Wideband Low Noise Amplifier
… This 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 …
-
Substrate noise analysis and techniques for mitigation in mixed-signal RF systems
… transients induced by digital circuits inject noise into the common substrate creating substrate noise. Analog circuits lack the large noise margins of digital circuits, thus making them susceptible to substrate voltage variations. This problem is exacerbated at higher frequencies as the …
-
CMOS bulk-driven mixers with passive baluns
… to the bulk connection of the transistors allows the amplification and switching stages of a conventional mixer to be combined into a single stage, thus improving the voltage headroom of the mixer. The addition of a transformer balun to the mixers improves the input impedance match, provides …
-
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 …
-
Circuit Design And Reliability Of A Cmos Receiver
… design methods are proposed, for example, for low noise amplifier (LNA). Except for band filters, local oscillators, and analog-digital converters which are usually implemented by COTS SAW filters and ICs, all the remaining blocks such as switch, LNA, mixer, and local oscillator are designed in …
-
Introduction of low noise amplifier for ultra-wideband radar receiver
… of the subject. My work is to provide a novel low-noise Amplifier (LNA) design. Major contributions include: Analysis of parameters of an LNA design which represent the important characteristics of for an ultra-wideband short range radar system. Comparison of classic LNAs and documenting of …
-
Design of low noise amplifier for ultra-wideband applications
The recent surge in the demand for low power portable wireless electronics that can offer extremely high data rates has resulted in much active research in Ultra-Wideband (UWB) systems. UWB is widely recognized as a promising technology for high data rate, short-range applications with precise time …
-
Design and Analysis of An Active Integrated Antenna
… consists of a microstrip patch antenna and a low noise amplifier (LNA), which are integrated together with a matching circuit and printed on an FR4 PCB circuit board. The system is designed, analyzed, and optimized by targeting to satisfy the design specifications for both the microstrip …
-
Gallium Nitride-Based HEMTs for Microwave Power and Noise: Physics and Application
… speed performance, both high microwave power and low microwave noise. In this dissertation, the millimeter-wave and microwave power performance and small signal and low noise microwave characteristics are investigated. The CW power performance at 20 GHz and 30 GHz of 0.25 mum x 100 mum AlGaN/GaN …
-
Spectrum shaping and its application: spread-spectrum clock generator and circuits for ultra wide band
… use of large sections of the radio spectrum at low amplitudes to transmit high-bandwidth digital data. In part II of the dissertation, two UWB applications are presented, both dealing with the advantages as well as with the challenges of a wide-band system, namely: a chaos-based sequence …
-
Silicon-Based PALNA Transmit/Receive Circuits for Integrated Millimeter Wave Phased Arrays
… optimization 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 …
-
Power-Efficient Voltage-Mode RF Front-End Using Quantized Analog Signal Processing
… (e.g., above 0 dBm) without degrading the noise floor and in turn increases the overall power consumption of both the signal and local oscillator (LO) paths. My contributions to the state-of-the-art SAW-less receivers for my PhD addresses the abovementioned issues and can be summarized in …
-
Analysis of RF Front-End Non-linearity on Symbol Error Rate in the Presence of M-PSK Blocking Signals
… contained within the RF front-end such as the low noise amplifier (LNA) and mixer. When receivers operate in the non-linear region, this will affect the system performance due to intermodulation products, and cross-modulation, to name a few. Intermodulation products are the result of adjacent …
-
Development of a temperature insensitive current controlled current source for LNA bias circuit applications
… application as the bias current for a bipolar Low Noise Amplifier (LNA) in order to minimise gain variations with temperature across the industrial temperature range (-40·C to 8S·C). The thesis begins with an explanation of key parameters concerned with LNA design and a target specification is …
-
High-Performance CMOS Front-End ASICs for SiPM Detectors and High-Frequency Ultrasound and Photoacoustic Imaging
… light detection and ranging applications. The slow-rising edge of standard SiPM signal, however, makes the timing measurement sensitive to noise and leads to poor timing resolution. Besides, the SiPM energy measurement utilizing charge-sensitive amplifiers suffers from high power consumption and …
-
A Completely Integrated Warm-IF Receiver and a 10GS/s Analog-Delay Pipeline ADC for Radio-Telescope Applications
… CHAI and SKA telescopes. A receiver including a low-noise amplifier (LNA), a voltage-controlled oscillator (VCO), a mixer, and a variable-gain amplifier (VGA), based on CHAI design requirements, was implemented in 0.13 μm complementary metal-oxide semiconductor (CMOS) technology. An …
-
Design of RF CMOS Power Amplifier for UWB Applications
… implementation of key RF blocks like the power amplifier (PA), transmit/receive switch, low noise amplifier (LNA) and mixers in an UWB transceiver. Though expensive technologies like SiGe or GaAs have been used for transceiver realizations, the ultimate goal is to have a single-chip, low-cost …
-
Study Of Oxide Breakdown, Hot Carrier And Nbti Effects On Mos Device And Circuit Reliability
… and circuits. The RF front-end circuits include low noise amplifier (LNA), local oscillator (LO) and mixer. It is desirable for a LNA to achieve high gain with low noise figure, a LO to generate low noise signal with sufficient output power, wide tuning range, and high stability, and a mixer to …
Page 1 of 2