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Proceedings ArticleDOI

Design of a high gain low noise amplifier for wireless applications

11 Apr 2013-pp 1171-1174
TL;DR: The design of a high gain low noise amplifier operating in a bandwidth of .5014 GHz for wireless applications and using AWR microwave office version is presented.
Abstract: This paper presents the design of a high gain low noise amplifier operating in a bandwidth of 5014 GHz for wireless applications High gain of 1617dB is achieved at a frequency of 4 GHz The Low noise amplifier is an electronic amplifier used to amplify possibly very weak signals Its mostly placed at the front-end of a radio receiver circuit so that the effect of noise from subsequent stages of the receiver chain is reduced by the gain of the LNA The transistor used here for the design of LNA is GaAs FET N76000 The high gain low noise amplifier is designed by using AWR microwave office version
Citations
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Proceedings ArticleDOI
01 Aug 2017
TL;DR: Comparative study of different applications of LNA has been done and reviews of various applications of low noise amplifier are reviewed.
Abstract: LNA is a vital component in radio frequency communication systems. Various applications of low noise amplifier are reviewed in this paper. The design considerations for low noise amplifier are different for different applications. Comparative study of different applications of LNA has been done and reviewed in this paper.

6 citations

Proceedings ArticleDOI
05 Mar 2020
TL;DR: Improvement in the LNA performance metrics is feasible by parametric optimization of transistor parameters and passive elements in the matching network.
Abstract: In a radio frequency (RF) transceiver, low noise amplifier (LNA) plays a critical role in determining the receiver performance. This paper elucidates the design of an LNA for optimizing its gain, noise figure and stability factor with different transistor configurations in the frequency range of 5-6 GHz. Design-optimization of LNA has been performed with standard transistor (BJT and MOSFET) files in circuit simulation software. For comparison we have considered the following configurations of LNA: (i) a single stage npn BJT LNA, (ii) npn BJT and NMOS cascode LNA, and (iii) npn BJT and CMOS cascode LNA. Simulation results show that compared to other configurations npn BJT-NMOS cascode LNA depicts the highest gain of 20.42 dB and the lowest noise figure of 0.25. On the other hand, npn BJT-CMOS cascode LNA demonstrates the highest stability factor of 1.07 followed by npn BJT LNA and npn BJT-NMOS cascode LNA configurations respectively. Further improvement in the LNA performance metrics is feasible by parametric optimization of transistor parameters and passive elements in the matching network.

5 citations


Cites background from "Design of a high gain low noise amp..."

  • ...Over the years with the advent of new wireless technologies much focus has been on the design of radio frequency (RF) low noise amplifier (LNA) for various applications [1-4]....

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Proceedings ArticleDOI
10 Jul 2014
TL;DR: In this paper, the authors presented the design and simulation of high gain Source degenerated Cascode LNA for Wi-max and W-CDMA applications at 3.5GHz.
Abstract: This paper presents the design and simulation of High gain Source degenerated Cascode LNA for Wi-max and W-CDMA applications at 3.5GHz. The design uses an enhanced cascade topology to attain improved forward gain and noise figure. Th is design includes lumped elements like inductor, capacitor and resistors to design input and output matching networks. The targeted narrow-band gain, impedance matching and noise figure are achieved at the 3.5GHz. Circuit has been designed Using standard UMC 0.18μm CMOS technology and simulated in the Cadence Spectre RF tool. Targeted narrowband gain, noise figure, are 25dB and 2dB respectively. The designed circuit exhibits narrow-band gain of 27.18 dB and noise figure of 1.7 dB with Input and output return loss of -17.57 dB and -29.21 dB respectively. Circuit operates from the supply voltage of 1.8V and draws a current of 6.39mA.

5 citations

Journal ArticleDOI
TL;DR: In this paper, the design of microwave transistor amplifiers with optimum cascade noise and gain is described, and two optimal solutions are possible: minimum cascade noise figure or maximum available cascade power gain without increasing the cascade noise over that of the minimum noise design.
Abstract: The design of microwave transistor amplifiers with optimum cascade noise and gain is described. By treating two stages at a time, the condition for the second stage's noise figure needed to satisfy the total cascaded gain and noise performance is derived. Two optimal solutions are possible: Minimum cascade noise figure or maximum available cascade power gain without increasing the cascade noise over that of the minimum noise design. A design example is submitted showing the effectiveness of the proposed method in optimising the gain and noise of cascaded amplifier stages. The approach can be extended to noise temperature and multiple cascaded stages including passive blocks without any loss of generality.

3 citations

01 Jan 2015
TL;DR: An efficient LNA design has to manage trade-off between Gain, Noise Figure, Input-Output Losses, power consumption and device's stability, as well as get good gain with minimum noise generation for the entire operating frequency range.
Abstract: Increasing demands of portable wireless devices have motivated the development of CMOS radio frequency integrated circuits (RFIC). In wireless system Low Noise Amplifier is the first stage of any RF Receiver design. Performance of RF receiver mainly depends on the effectiveness of LNA. The main objective of the LNA design is to get good gain with minimum noise generation for the entire operating frequency range. With proper matching, Wideband LNA would be one with approximately or exactly the same operating characteristics over a very wide passband and would be used for multiple applications. An efficient LNA design has to manage trade-off between Gain, Noise Figure, Input-Output Losses, power consumption and device's stability. The LNA would be designed and will be simulated on Agilent's ADS.

3 citations

References
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Journal ArticleDOI
TL;DR: In this article, two UWB multiband systems, frequency hopping and Spectral Keying, have been described, both of which meet the stringent requirements provided by IEEE 802.15.3a.
Abstract: The recent FCC frequency allocation for UWB has generated a lot of interest in UWB technologies. There is 7,500 MHz of spectrum for unlicensed use. The main limitations are provided by the low-power spectral density and by the fact that the transmit signal must occupy at least 500 MHz at whole times. IEEE 802.15.3a is being developed for high-bit-rate PAN applications, and UWB is the most promising technology to support the stringent requirements: 110, 200, and 480 Mb/s. Two UWB multiband systems, frequency hopping and Spectral Keying, have been described in this article. Both systems meet the stringent requirements provided by IEEE 802.15.

841 citations

Journal ArticleDOI
TL;DR: In this article, four reported low-noise amplifier (LNA) design techniques applied to the cascode topology based on CMOS technology are reviewed and analyzed: classical noise matching, simultaneous noise and input matching (SNIM), power-constrained noise optimization, and power-consistency with SNIM (PCSNIM) techniques.
Abstract: This paper reviews and analyzes four reported low-noise amplifier (LNA) design techniques applied to the cascode topology based on CMOS technology: classical noise matching, simultaneous noise and input matching (SNIM), power-constrained noise optimization, and power-constrained simultaneous noise and input matching (PCSNIM) techniques. Very simple and insightful sets of noise parameter expressions are newly introduced for the SNIM and PCSNIM techniques. Based on the noise parameter equations, this paper provides clear understanding of the design principles, fundamental limitations, and advantages of the four reported LNA design techniques so that the designers can get the overall LNA design perspective. As a demonstration for the proposed design principle of the PCSNIM technique, a very low-power folded-cascode LNA is implemented based on 0.25-/spl mu/m CMOS technology for 900-MHz Zigbee applications. Measurement results show the noise figure of 1.35 dB, power gain of 12 dB, and input third-order intermodulation product of -4dBm while dissipating 1.6 mA from a 1.25-V supply (0.7 mA for the input NMOS transistor only). The overall behavior of the implemented LNA shows good agreement with theoretical predictions.

542 citations

Proceedings ArticleDOI
13 Sep 2004
TL;DR: A UWB 3.1 to 10.6 GHz LNA employing an input three-section band-pass Chebyshev filter is reported, which achieves a power gain of 9.3 dB with an input match of 9 mW.
Abstract: A UWB 3.1 to 10.6 GHz LNA employing an input three-section band-pass Chebyshev filter is reported. Fabricated in a 0.18 /spl mu/m CMOS process, -10 dB over the band, a NF of 4 dB, and an IIP3 of -6.7 dBm while consuming the IC achieves a power gain of 9.3 dB with an input match of 9 mW.

276 citations


"Design of a high gain low noise amp..." refers methods in this paper

  • ...By using (3),(4),(5),(6) Centre of source stability circle (3) Radius of source stability circle (4) Centre of load stability circle (5) Radius of load stability circle (6) 978-1-4673-5758-6/13/$31.00 © 2013 IEEE 1171 To design the low noise amplifier we need to draw the noise figure circle [9]....

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Book ChapterDOI
15 Apr 2005
TL;DR: In this article, the authors provide an overview of ultra-wideband (UWB) wireless systems, including modulation schemes, pulse shapes, interference issues, and channel characterization, as well as several possible applications.
Abstract: This article provides an overview of ultra-wideband (UWB) wireless systems. System issues are discussed including modulation schemes, pulse shapes, interference issues, and channel characterization. Several communications- and radar-specific implementation issues are also addressed. Much of the description is provided in the context of pulse-based UWB or impulse radio. Furthermore, a section is dedicated to describing the role of the FCC and how current regulations are shaping UWB. The last section extends this discussion and presents several possible applications, providing examples of each. Keywords: Ultra-wideband; UWB; applications; modulation; channel modeling

224 citations

Book
01 Sep 2004
TL;DR: In this article, the authors propose a distributed circuit analysis of transmission lines and propose a method for converting them to signal-flow graphs, which are then used to represent the signal flow graph of a single-port device.
Abstract: 1 Introduction. 1.1 Microwave Transmission Lines. 1.2 Transmitter and Receiver Architectures. 2 Communication Systems. 2.1 Terrestrial Communication. 2.2 Satellite Communication. 2.3 Radio-Frequency Wireless Services. 2.4 Antenna Systems. 2.5 Noise and Distortion. Suggested Reading. Problems. 3 Transmission Lines. 3.1 Distributed Circuit Analysis of Transmission Lines. 3.2 Sending-End Impedance. 3.3 Standing Wave and Standing Wave Ratio. 3.4 Smith Chart. Suggested Reading. Problems. 4 Electromagnetic Fields and Waves. 4.1 Fundamental Laws of Electromagnetic Fields. 4.2 The Wave Equation and Uniform Plane Wave Solutions. 4.3 Boundary Conditions. 4.4 Uniform Plane Wave Incident Normally on an Interface. 4.5 Modified Maxwell's Equations and Potential Functions. 4.6 Construction of Solutions. 4.7 Metallic Parallel-Plate Waveguide. 4.8 Metallic Rectangular Waveguide. 4.9 Metallic Circular Waveguide. Suggested Reading. Problems. 5 Resonant Circuits. 5.1 Series Resonant Circuits. 5.2 Parallel Resonant Circuits. 5.3 Transformer-Coupled Circuits. 5.4 Transmission Line Resonant Circuits. 5.5 Microwave Resonators. Suggested Reading. Problems. 6 Impedance-Matching Networks. 6.1 Single Reactive Element or Stub Matching Networks. 6.2 Double-Stub Matching Networks. 6.3 Matching Networks Using Lumped Elements. Suggested Reading. Problems. 7 Impedance Transformers. 7.1 Single-Section Quarter-Wave Transformers. 7.2 Multisection Quarter-Wave Transformers. 7.3 Transformer with Uniformly Distributed Section Reflection Coefficients. 7.4 Binomial Transformers. 7.5 Chebyshev Transformers. 7.6 Exact Formulation and Design of Multisection Impedance Transformers. 7.7 Tapered Transmission Lines. 7.8 Synthesis of Transmission Line Tapers. 7.9 Bode-Fano Constraints for Lossless Matching Networks. Suggested Reading. Problems. 8 Two-Port Networks. 8.1 Impedance Parameters. 8.2 Admittance Parameters. 8.3 Hybrid Parameters. 8.4 Transmission Parameters. 8.5 Conversion of Impedance, Admittance, Chain, and Hybrid Parameters. 8.6 Scattering Parameters. 8.7 Conversion From Impedance, Admittance, Chain, and Hybrid Parameters to Scattering Parameters, or Vice Versa. 8.8 Chain Scattering Parameters. Suggested Reading. Problems. 9 Filter Design. 9.1 Image Parameter Method. 9.2 Insertion-Loss Method. 9.3 Microwave Filters. Suggested Reading. Problems. 10 Signal-Flow Graphs and Their Applications. 10.1 Definitions and Manipulation of Signal-Flow Graphs. 10.2 Signal-Flow Graph Representation of a Voltage Source. 10.3 Signal-Flow Graph Representation of a Passive Single-Port Device. 10.4 Power Gain Equations. Suggested Reading. Problems. 11 Transistor Amplifier Design. 11.1 Stability Considerations. 11.2 Amplifier Design for Maximum Gain. 11.3 Constant-Gain Circles. 11.4 Constant Noise Figure Circles. 11.5 Broadband Amplifiers. 11.6 Small-Signal Equivalent-Circuit Models of Transistors. 11.7 DC Bias Circuits for Transistors. Suggested Reading. Problems. 12 Oscillator Design. 12.1 Feedback and Basic Concepts. 12.2 Crystal Oscillators. 12.3 Electronic Tuning of Oscillators. 12.4 Phase-Locked Loop. 12.5 Frequency Synthesizers. 12.6 One-Port Negative Resistance Oscillators. 12.7 Microwave Transistor Oscillators. Suggested Reading. Problems. 13 Detectors and Mixers. 13.1 Amplitude Modulation. 13.2 Frequency Modulation. 13.3 Switching-Type Mixers. 13.4 Conversion Loss. 13.5 Intermodulation Distortion in Diode-Ring Mixers. 13.6 FET Mixers. Suggested Reading. Problems. Appendix 1: Decibels and Neper. Appendix 2" Characteristics of Selected Transmission Lines. Appendix 3: Specifications of Selected Coaxial Lines and Waveguides. Appendix 4: Some Mathematical Formulas. Appendix 5: Vector Identities. Appendix 6: Some Useful Network Transformations. Appendix 7: Properties of Some Materials. Appendix 8: Common Abbreviations. Appendix 9: Physical Constants. Index.

139 citations


"Design of a high gain low noise amp..." refers methods in this paper

  • ...As the technology got advanced, gallium arsenide FETs and bipolar transistors are used which gives better amplification....

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