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A Calibrated Signal Simulation
System Utilizing I/Q Modulation
Techniques
Juan Grau
April 1988
RF & Microwave
Measurement
Symposium
and
Exhibition
r/"~ HEWLETT
~~ PACKARD
www.HPARCHIVE.com
A Calibrated Signal Simulation System
Utilizing I/Q Modulation Techniques
Abstract: This paper describes the system, the performance and a technique for calibrating
the system to improve SSB image rejection. Other issues addressed include the
elimination of carrier leakage, amplitude ripple, and phase match between the
I and Q modulating channels.
Author: Juan Grau, R&D Engineer, HP Stanford Park Division, Palo Alto, CA. A native
of Mexico, Grau has a BSEE, Rice University, 1980 and MSEE from Stanford
University, 1983. At HP since 1980, he worked on the HP 8902A Measuring
Receiver and the HP 8981A Vector Modulation Analyzer.
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Outline
1. Vector Arbitrary Waveform Synthesizer NAWS) overview
2. The VAWS system
a) Baseband arbitrary waveforms
b) Vector signal generator
c) Upconversion using vector (I/O) modulation techniques
d) System capabilities
3. Applications: Simulation Domains
a) Frequency domain: An EW jamming signal
b) Amplitude and phase domain: A radar chirp
c) I & 0 domain: Digital modulation
d) Simulate transmission impairments by domain switching
4. Performance
a) System errors
b) Calibration
c) Calibrated performance
5. Summary
VAWSOO20
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Vector Arbitrary Waveform Synthesizer
VAWS
Complex signal simulation from
10 to 3000 MHz applications in ...
DIGITAL
RADAR COMMUNICATIONS EW
Arbitrary waveform generation is a powerful tool for signal
simulation. The VAWS (Vector Arbitrary Waveform Synthesizer) system
extends arbitrary waveform generation capabilities into the RF and
microwave frequencies. Very complex types of modulation can thus be
easily simulated. The range of possible applications for the system
covers the Radar, EW and Telecommunications fields.
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What is VAWS?
HP-IB
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