UWB LNA THESIS

Search and download doctoral PHD dissertations from Sweden. Resonances generated within the DC path of the bias network are investigated and explained. Both simulation and experimental results show that microstrip bias networks for ultra-wideband systems can be optimized to avoid or reduce the resonance phenomena. Klas Eriksson ; [] Keywords: The amplifier is optimized for the minimum noise figure over the entire bandwidth and for maximum flat power gain.

The nonidealities of the broadband matching networks implemented with microstrips are analyzed and their effects on the LNA performances are presented. To verify the wideband amplifier design principles, both a narrowband LNA for 5. The mass production of integrated circuits for digital electronics has made CMOS technology the most frequently used IC process today. Fred Tillman ; Lunds universitet. As a first step the design methodology focuses on noise figure optimization and continues with the optimization of the power gain. However, if a wideband operation is required, the issue must be solved with other techniques.

The circuits use an advanced indium phosphide InP double heterojunctionbipolar transistor DHBT process with a multilayer back-end. Resonances generated within the DC path of the bias network are investigated and explained.

uwb lna thesis

It is shown that with appropriate broadband matching techniques, Thrsis Group 1 ultra-wideband typical specifications can be achieved using a 5. See yesterday’s most popular searches here. Any loss that occurs before the LNA in the system will substantially degrade the overall receiver sensitivity. It is also a promising ghesis for receiver front-ends in the radio base station RBS where low noise figure and high linearity are key issues for low noiseamplifier LNA design.

: THESIS LOW NOISE AMPLIFIER DESIGN

Thanks to the large production volume, CMOS has increasingly become the most cost efficient technology of choice, and the fast development of small, high speed CMOS devices has made the technology feasible for many RF applications. The LNA design employs dual-section input and output matching networks. It has been shown that, without accurate high-frequency component models and without including highfrequency electromagnetic coupling and component parasitics, LNA and particularly UWB LNA design can result in large errors.

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The mass production of integrated circuits for digital electronics has made CMOS technology the most frequently used IC process today. Klas Eriksson ; [] Keywords: Optimally, wideband LNA design methodologies should tuesis improved receiver sensitivity and thus accurate low-level signal processing.

As a first step the design methodology focuses on noise figure optimization and continues with the optimization of the power gain. Pirooz Chehrenegar ; [] Keywords: In order to reduce losses and thesus minimize the noise figure of the front-end, the LNA and the antenna or antenna-system should be designed simultaneously. Finally, UWB bias networks implemented with different microstrip elements were studied.

As the development of the widcband, low-power and low-cost wireless systems continues, new LNA topologies and design methodologies have become one of the most interesting challenges in the field of radio frequency system design.

Advanced design techniques, for example electromagnetic simulations of the entire layout of the LNA module were utilized. Firstly, an overview of the design techniques for wideband matching networks is given. The LNA design must handle trade-offs among LNA topology selection, wideband matching for low noise figure, flat power gain and wideband bias aspects.

Moreover, a co-design of an antenna-UWB LNA front-end was performed for the minimum noise figure and maximum flat power gain within the entire frequency band. As the development of the widcband, low-power and low-cost wireless systems continues, new LNA topologies and design methodologies have become one of the most theiss challenges in the field of radio frequency system design.

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The first design uses lumped elements for implementing the matching networks. Experimental results confirm the simulation results based on the LNA design with distributed matching networks.

uwb lna thesis

Show downloadable uqb only. Showing result 1 – 5 of 39 swedish dissertations containing the words thesis low noise amplifier design. The nonidealities of the broadband matching networks implemented with microstrips are analyzed and their effects on the LNA performances are presented.

Fred Tillman ; Lunds universitet. It is shown that the design using lumped element matching networks has difficulties to achieve high performance at a frequency of above 5 GHz and that distributed matching circuits are more adequate compared to the lumped element solution.

uwb lna thesis

The second design utilizes distributed element matching networks using microstrip lines. The amplifier is optimized for the minimum noise figure over lma entire bandwidth and for maximum flat power gain.

Search for dissertations about: “thesis low noise amplifier design”

Ultrawideband Low-Noise Amplifier Design for 3. The printed circuit board PCB manufacture process variations are included in the simulation setup.

Crucial technology figures are power capability, RF noise figure, low-frequency noise and the quality factor Q-factor of the resonator. In this letter, bias networks with three different radio frequency chokes for ultra-wideband systems have been studied.