PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: confidence

Lecture 9: Intercept Point, Gain Compression and Blocking

EECS 142 Lecture 9: Intercept Point, gain Compression andBlockingProf. Ali M. NiknejadUniversity of California, BerkeleyCopyrightc 2005 by Ali M. NiknejadA. M. NiknejadUniversity of California, BerkeleyEECS 142 Lecture 9 p. 1/29 p. 1/29 gain CompressionViVodVodViViVodVodViThe large signal input/output relation can display gaincompression or expansion. Physically, most amplifierexperience gain Compression for large small-signal gain is related to the slope at a givenpoint. For the graph on the left, the gain decreases forincreasing M. NiknejadUniversity of California, BerkeleyEECS 142 Lecture 9 p. 2/29 p. 2/291 dBCompression Point VoVi ViPo, 1dBPi, 1dBGain Compression occurs because eventually theoutput signal (voltage, current, power) limits, due to thesupply voltage or bias we plot the gain (log scale) as a function of the inputpower, we identify the point where the gain has droppedby1 dB.

Gain Compression Vi Vo dVo dVi Vi Vo dVo dVi The large signal input/output relation can display gain compression or expansion. Physically, most amplifier experience gain compression for large signals. The small-signal gain is related to the slope at a given point. For the graph on the left, the gain decreases for increasing amplitude.

Fullscreen Download
Loading..

Tags:

  Points, Gain, Compression, Intercepts, Intercept point, Gain compression and, Gain compression

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of Lecture 9: Intercept Point, Gain Compression and Blocking

Documents from same domain

Power Amplifiers for Communications

rfic.eecs.berkeley.edu

Peak E ciency Power Added E ciency (PAE) is a popular metric. P out is the output power, P in is the input power, and P dc is the DC power consumption of the PA For high power gain systems (G p), the e ciency approaches the drain drain e ciency ( d), or for a BJT, the \collector" e ciency, or simply the e ciency of the last stage

EECS 242: Mixer Noise and Design

rfic.eecs.berkeley.edu

The mixer voltage gain is the ratio of the output voltage signal at the IF frequency to the RF input voltage signal. If the LO is at either peak, one

  Eecs 242

Lecture 12: Noise in Communication Systems

rfic.eecs.berkeley.edu

The noise of the first stage is the most important. Thus, every communication system employs a low noise amplifier (LNA) at the front to relax the noise requirements A typical LNA might have a G = 20dB of gain and a noise figure NF < 1.5dB. …

  Communication, Noise

EECS 242

rfic.eecs.berkeley.edu

EECS 242 Scattering Parameters Prof. Niknejad University of California, Berkeley University of California, Berkeley EECS 242 – p. 1/43

  Eecs, Eecs 242

myDAQ How-to Guide

rfic.eecs.berkeley.edu

Leland Au 1 myDAQ How-to Guide Leland Au, UC Berkeley Intro USB: 1. Type B USB port 2. Blue LED Indicator Audio: 3.

  Guide, Mydaq, Mydaq how to guide

Class E/F Amplifiers - University of California, Berkeley

rfic.eecs.berkeley.edu

Class A/B/C Properties Keep voltage waveform sinusoidal amplitude is limited to V dd /2 Only way to improve efficiency is to control current Require very large “on” current to deliver power EECS 242 Prof. Ali M. Niknejad (C) 2009

  Class, Amplifier, Class a, Class e f amplifiers

Phase Locked Loops (PLL) and Frequency Synthesis

rfic.eecs.berkeley.edu

divider between N and N + 1 using a sigma-delta modulator. In practice, the programmable divider is made of up ... is an important fact to consider when designing a PLL. Niknejad PLLs and Frequency Synthesis. Divider Linear Model From …

  Designing, Divider

Lecture 15: Introduction to Mixers

rfic.eecs.berkeley.edu

Image Reject Filter In our example, RF = 1000MHz, and IF = 1MHz.The Imagine is on 2IF = 2MHz away. Let’s design a filter with f0 = 1000MHz and f1 = 1001MHz. A fifth-order Chebyshev filter with 0.2dB ripple is down about 80dB at the IF frequency. But the Q for such a filter is Q = 103MHz 1MHz = 103 Such a filter requires components with Q > 103! A. M. Niknejad …

  Filter

Nonlinear System Theory

rfic.eecs.berkeley.edu

phase-plane analysis describes nonlinear phenomena such as limit cycles and multiple equilibria of second-order systems in an efficient manner. The theory of differential equations has led to a highly developed stability theory for some classes of nonlinear systems. (Though, of course, an engineer cannot live by stability alone.) Functional

  System, Equations, Nonlinear, Nonlinear systems

Crystal Oscillators (XTAL) - University of California ...

rfic.eecs.berkeley.edu

Series and Parallel Mode C 0 L 1 C 1 R 1 C 0 L 1 R 1 low resistance high resistance Due to the external physical capacitor, there are two resonant modes between a series branch and the capacitor. In the series mode ωs, the LCR is a low impedance (“short”). But beyond this frequency, the LCR is an equivalent inductor that resonates

  Parallel, Resonant, Xtal