Experimental - Didáticos
Montagens em Laboratório didático e
simulação em computador de circuitos que propiciem a
verificação dos temas abordados na teoria de 3ELE002.
Veja Atualização (2003): 3ELE002 - CIRCUI TOS DE COMUNI CAÇÃO:
TEORI A E PRÁTI CA (3,6MB)
1. Circuitos Ressoantes
e Síntese de filtros para VHF
2. Filtros
Ativos apêndice
I
3. Osciladores LC
apêndice
I
4. Oscilador à XTAL
5. Mixer e Modulador Balanceado
(AM-DSB/SC) apêndice
I
6. Modulação
AM
7. Demodulação
AM apêndice
I
8. Receptor
AM Superheteródino - Caracterização
9. Modulador FM
e Demodulador FM com PLL apêndice
I; apêndice
II; apêndice
III.a; apêndice
III.b; apêndice
III.c
10. Modem FSK apêndice
I
11. Adaptação de Impedância
apêndice
I
12. Amplificador de Potência VHF apêndice
I
13. Circuitos multiplicadores de
freqüência
Notas de Aplicação
sources:
(Applied Microwave & Wireless:
1998 a 2001)
(Maxim - Dallas Semiconductor)
(RF
Design)
Filtros e elementos passivos, acopladores, baluns,...
Minimizing Component-Variation Sensitivity in Single-Op-Amp Filters
A Filter Primer
Filter Design Using Integrator Blocks
Generating Switched-Capacitor-Filter Clocks
3rd-Order Highpass Filter Has Synthetic Inductor
Filter
Basics: Anti-Aliasing
Third-Order Highpass Filter Has Synthetic Inductor
"RF Capacitive-Coupled
Filters"
"Design
Ideas: A Review of ABCD Parameters"
"Evaluation of Parasitic Parameters for Packaged Microwave
Transistors"
"L-C
Filters: Past, Present and Future"
Design
Ideas: Low Cost Lowpass Filter Design Using Image Parameters"
"Notes on Power Combiner and Splitter
Circuits"
"Design of a Simple
Tunable/Switchable Bandpass Filter"
"Design of Baluns Using Backward Wave
Couplers"
"An Efficient Procedure for Narrowband Bandpass Filter Design"
"Build Filters Without PC
Boards"
"Design
Ideas: Designing L-C Circuits with ELEKTA Professional"
"Design
Ideas: Ceramic Bandpass Filters — Boon or Bane?"
"Design of a Constant Insertion Loss Variable Frequency LC Band Pass
Filter"
"Finite Element Analysis of Planar
Couplers"
A Wideband Balun — How Does it
Work?"
"New Design Program Directly Synthesizes Filters with Arbitrary Transmission Zero
Placement"
"Dielectric Materials at Microwave
Frequencies"
"The Gold
Vs. Aluminum War Revisited"
"Filters and an Oscillator Using a New Solenoid
Model"
"Tunable Combline Filter Using 60 Degree
Resonators"
"A VCA Using the Resistive Line Approach with a Parasitic Inductance Cancellation
Circuit"
"A VCA Using the Constant Impedance Approach"
"Design Ideas — Transmission Zeros in Filter Design"
"Effects of Parasitics in Circuit
Simulations"
"The Short-Line
Transformer"
"A 2.6 GHz Microstrip Hairpin Filter Design Using CAD and EDA
Tools"
"Capacitors in Broadband
Applications"
"Design Ideas — Lumped Element Quadrature Hybrid Provides Supplementary Low Pass
Filtering"
Microwave Lowpass Filters with a Constricted Equi-Ripple
Passband"
"Design of Tunable Bandstop Filters using Multilayer
Microstrip"
Antenas
"Design
Ideas: A Primer on Antenna/Human Body Interaction"
"Fractal Antenna Elements and
Arrays"
"A Half-Wave Hula-Hoop Antenna for GSM Mobile
Applications"
"A Circularly Polarized 60 GHz Microstrip
Antenna"
"A Logarithmic Spiral Antenna for 0.4 to 3.8
GHz"
"Calculating Multi-Element Antennas Using Mathcad®"
Osciladores e Sintetizadores de Freqüência
Specifying Quartz Crystals
Crystal Oscillator Has Dual or Differential Outputs
LC Oscillator Has 1% THD
IF Tank Design for the MAX2360
Trimless IF
VCO: Part 1: Design Considerations
Trimless IF
VCO: Part 2: New ICs Simplify Implementation
Oscillator Design on Any Harmonic-Balance
Simulator"
"The Virtual Ground in Oscillator Analysis - A Practical Example"
"Hybrid Frequency Synthesizer Combines Octave Tuning Range and Millihertz
Steps"
"Gated Oscillator has Independently Variable ton and
toff"
"RF Oscillator Analysis and Design by the Loop Gain
Method"
"Design
Ideas: High-Q Resonators on FR4"
"Wideband Low Phase Noise Push-Push
VCO"
"A Simple Analytic Method for Transistor Oscillator Design"
"Oscillators are Designed for Digital Microwave
Communications"
"A VCO Design for WLAN Applications in the 2.4 to 2.5 GHz ISM Band"
"An Ultra Low
Cost, Low Phase Noise VCO"
"Spurious Responses in Thickness Shear Quartz
Crystals"
"Frequency Properties of a Reverse Biased Thick Switching PIN
Diode"
Ruído e EMI - medidas e predição
"Design
Ideas: Use Layout to Reduce Radiated Emissions"
"Manual Tuners Help Make Precise Load Pull and Noise
Measurements,"
"Computing the LO Phase Noise Requirements in a GSM
Receiver"
"Design
Ideas: Mechanical Design Tips for EMI Shielding"
"Accurate Phase Noise Prediction in PLL
Synthesizers"
"Design
Ideas: A Brief Review of Noise Measurements and Parameters"
"Method for Reducing Active Filter Noise in PLL
Synthesizers"
Modulação / Demodulação Analógica (AM, FM, PM)
"A High Dynamic Range Miniature
Modulator/Demodulator"
"Design Ideas — A Transistor-Controlled FSK
Modulator/Transmitter"
Modulação / Demodulação Digital
QPSK Modulation Demystified
"A Simplified Subharmonic I/Q
Modulator"
"FQPSK Transceivers Double the Spectral Efficiency of Wireless and Telemetry
Systems"
"Spectrally Efficient Biphase
Modulation"
"Unfiltered
FQPSK: Another Interpretation and Further Enhancements - A"
"Unfiltered
FQPSK: Another Interpretation and Further Enhancements - B"
" Compatibility of Dual Use Standardized FQPSK with Other Data Links and
WCDMA"
" Maximizing the Potential of Radio Spectrum with High-Order
Modulation"
PLL
"Coherent Carrier Regeneration Using a Long Loop PLL
Technique"
"All Digital
Fractional-N Synthesizer for High Resolution Phase Locked Loops -- Part 2"
"Analog and Digital
Fractional-n PLL Frequency Synthesis: A Survey and Update"
"Phase Lock Loop Stability
Analysis"
"Accurate Phase Noise Prediction in PLL
Synthesizers"
Mixer e Conversão de Freqüência
Conversor
de freqüência em SSB utilizando DDS
"Understanding Transformer Operation in Double-Balanced Diode Mixers"
"Performing Sensitive Two-Tone Mixer Measurements With Existing
Equipment"
"Polynomial Model of Blocker Effects on
LNA/Mixer Devices"
Carta de Smith
"Chart Analysis Enhanced with Mathcad® "
Adaptação de Impedância
Impedance Matching and the Smith
Chart: The Fundamentals
Broadband Impedance Matching Using the "Real
Frequency" Network Synthesis Technique"
"Design
Ideas: Transmission Line Transformer Basics"
"Broadband Impedance Matching Using
GRABIM"
"Broadband Impedance Matching Using
GRABIM, Part 2"
"Design
Ideas: Phase Shift as a Design Parameter in Impedance Matching Networks"
"A New Approach to Broadband Transmission Line Hybrid Design"
"An Analytic Method for Impedance Matching Using
MATLAB"
"Direct s-matrix Analysis of Nonuniform Transmission
Lines"
Adaptação
de impedância em Osciladores e Filtros empregando Carta de Smith
Modelos para transistor de RF
"Develop SPICE High Frequency Small Signal Transistor Models from Data
Sheets"
"Techniques for Small-Signal
Modeling"
Amplificadores RF
"LNA Design Uses Series Feedback to Achieve Simultaneous Low Input VSWR and Low
Noise"
"Spectral Sidelobe Regrowth in Saturating
Amplifiers"
"A Push-Pull 300-watt Amplifier for 81.36 MHz"
"Exact Simulation of LNAs Reduces Design Cycle Time"
"pHEMT MMIC Power Amplifiers for Base Stations and Adaptive
Arrays"
"Second Order Effects in Feedforward
Amplifiers"
"Design of a 3-volt HBT Power Amplifier for
DCS"
"High Efficiency Two Stage Power Amplifiers with Nearly Constant Saturated Output
Power"
"A High IIP3 Low Noise Amplifier for 1900 MHz Applications Using the SiGe BFP620 Transistor"
"Effective Output Intercept Point
(EIOP) — A Useful RF Transmitter Figure-of-Merit"
"Design and Development of a Low-Noise Amplifier Using Measured Models of
Transistors"
"Amplifier Linearization Using Adaptive RF
Predistortion"
" Wideband Gain Block Amplifier Design
Techniques"
"A General Purpose
LNA/PA for Linear and Saturated Applications"
Improving Receiver Intercept Point Using Selectivity
Multiplicadores de Freqüência
"Computer-Aided Design of Diode Frequency
Multipliers" (software;
1,62MB)
"The Operation of Low-Order RF Frequency
Multipliers"
"Design of PHEMT Frequency Triplers with Conversin Gain at 6
GHz"
Enlaces e Sistemas de Comunicação
"Designing to Digital Wireless Specifications Using Circuit Envelope
Simulation"
"An Improved Correlator for CDMA
Receivers"
"Characterization and Simulation of a 915 MHz
Receiver"
"Calculating the Heights of Microwave Antennas in the Case of One Obstacle in the Far
Field"
"Design
Ideas: Key Engineering Factors in Satellite Communications"¨
"Receiver Architectures with No Intermediate
Frequency"
Métodos de Medidas em RF (Fase, Amplitude Potência e outros
parâmetros)
"Design
Ideas: Simple Evaluation of Dynamic Range"
"Measurement of kTBF in Point-to-Point Digital Microwave
Radios"
"Understanding the Sources of Phase Measurement
Errors"
"Accurate Amplitude Measurement and Phase Detection over Wide Dynamic Ranges"
"The
Far-Field: How Far is Far Enough?"
"Design
Ideas: Notes on Low Cost Design Techniques"
