CH6' LNA Design

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CH6. LNA Design
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Contents

• Introduction and Basic Amplifiers
• Amplifier with feedback
• Noise in Amplifiers
• Linearity in Amplifiers
• Differential Pair (Emitter-Coupled Pair) and
  Other
• Differential Amplifiers
• Low-Voltage Topologies
• DC Bias Networks

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Basic Amplifiers

• LNA(Low Noise Amplifier)
• First block in receiver front ends
• Amplifying the signal while introducing a minimum
  amount of noise to the signal
• Common-emitter amplifier Driver for LNA
• Common-collector amplifier
• high input impedance and low output impedance
• Excellent buffer between stages or before output
  driver
• Common-base amplifier
• Used as a cascode
• in combination
• with the common emitter
• to form an LNA stage

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Common-Emitter Amplifier
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Common-Emitter Amplifier
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Common-Emitter Amplifier
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CE Amplifiers Exact Poles and Zeros
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CE Amplifiers Exact Poles and Zeros
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Simple Expressions for Widely Separated Poles
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Common-Base Amplifier
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Cascode Amplifier
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Cascode Amplifier
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Common-Collector Amplifier
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Common-Collector Amplifier
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Common-Collector Amplifier
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Ex. 15x BJT
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Common-Emitter with Series Feedback
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Common-Emitter with Series Feedback
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Common-Emitter with Series Feedback
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Common-Emitter with Shunt Feedback
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Common-Emitter with Shunt Feedback
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Common-Emitter with Shunt Feedback
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Shunt Feedback with Buffer
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Noise in Amplifier
Input-Referred Noise Model of the Bipolar
Transistor
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Correlation Admittance of CE Amplifier
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Noise Figure of CE Amplifier
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Input Matching of LNAs for Low Noise
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Input Matching of LNAs for Low Noise
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Input Matching for Power and Noise
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Noise Figure vs. Bias Current
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Effect of Cascoding on Noise Figure
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Noise in the Common-collector Amplifier
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Nonlinearity in Bipolar Transistor
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Effects of Emitter Degeneration On Nonlinearities
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Effects of Emitter Degeneration On Nonlinearities
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Nonlinearity in the Output Impedance
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Effects of Nonlinear Capacitors
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Linearity in Common-Collector Configuration
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Differential Pair (Emitter-Coupled Pair)
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Differential Pair
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Low-Voltage Topologies for LNAs
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Low-Voltage Topologies Using On-chip Transformers
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DC Bias Network Using Current Mirror
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DC Bias Network
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Temperature Effects