By Patrick Roblin
With more and more inexpensive and power-efficient RF electronics demanded through modern day instant conversation platforms, it really is necessary to sustain to hurry with new advancements. This publication provides key advances within the box you must find out about and rising styles in large-signal size options, modeling and nonlinear circuit layout conception supported via sensible examples.
issues coated comprise:
• Novel large-signal size options that experience develop into to be had with the creation of nonlinear vector community analyzers (NVNA), akin to the LSNA, PNA-X and change
• Direct extraction of machine versions from large-signal RF dynamic loadlines
• Characterization of reminiscence results (self-heating, traps) with pulsed RF measurements
• Interactive layout of power-efficient amplifiers (PA) and oscillators utilizing ultra-fast multi-harmonic energetic load-pull
• Volterra and poly-harmonic distortion (X-parameters) behavioral modeling
• Oscillator part noise theory
• Balancing, modeling and poly-harmonic linearization of broadband RFIC modulators
• improvement of a frequency selective predistorter to linearize PAs
Read or Download Nonlinear RF Circuits and Nonlinear Vector Network Analyzers: Interactive Measurement and Design Techniques (The Cambridge RF and Microwave Engineering Series) PDF
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Additional resources for Nonlinear RF Circuits and Nonlinear Vector Network Analyzers: Interactive Measurement and Design Techniques (The Cambridge RF and Microwave Engineering Series)
It is, however, possible under appropriate conditions to further increase the modulation bandwidth, by choosing the measurements parameters of the LSNA such as the ADC frequency f ADC , the LO frequency f LO , and the FFT size NFFT in such a way that none of the fundamental and harmonic tones folds down to the same IF frequency during down conversion . Wideband multitone signals can be acquired that way after the frequencies measured are descrambled. Note that a technique to avoid the frequency scrambling has been demonstrated for wideband LSNA measurements .
Schreurs and K. A. Remley, “Use of multisine signals for efficient behavioral modeling of RF circuits with short-memory effects,” in 61st ARFTG Conference Digest, pp. 65–72, 2003. 2 Large-signal vector measurement techniques with NVNAs1 In this chapter we shall first review the various measurement techniques which are traditionally used for the characterization of RF circuits. Next we will introduce several nonlinear vector network analyzers (NVNAs) that have been developed to characterize the nonlinear response of circuits at radio frequencies (RF).
The goal of the tuner deembedding is to recover the correct calibration setup without any extra calibration steps, even if the tuners are placed on new impedance positions (Z x ). 12 shows a simplified block diagram of the NVNA measurement system for tuner deembedding. Only one port is considered here. 5 Tuner deembedding with the LSNA measurements. Between the reference planes 1 and 3, we can write an error coefficient (ECF) matrix  from the NVNA SOL calibration as a3 b3 1 γS = KS βS δS a1 b1 .