RF CIRCUITS DESIGN BASICS.pdf

RF CIRCUITS DESIGN BASICSRF circuit design: Basics

Akira Matsuzawa Tokyo Institute of Technology
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Contents
Building blocks in RF system and basic performances Device characteristics in RF application Low noise amplifier design Mixer design Oscillator design

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Basic RF circuit block
RF systems are composed of limited circuits blocks. LNA, Mixer, and Oscillator will be discussed in my talk. Receiver 1) Low Impedance Noise Matching Amp.

2) Mixer Filter

Transmitter Power Amp.

3) Oscillator

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Basic functions of RF building blocks
Amplifier, frequency converter (mixer +oscillator), and filer are basic function blocks in RF system.

2) Mixer+ Oscillator Undesired Down conversion dB 3) Filter Frequency conversion dB Desired 1) Amplifier

Log (f)

Up conversion

Log (f)

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RF Amplifier
Gain: Amplify sm