Trusted Resource for the Working RF Engineer
Search MWRF
Home
Product Directory
Topics
Note Pad
MTT-S Video Coverage
Back Issues
RF Blogs
Military Electronics
Subscribe
News
Online News
Design Features
Web Seminars
PartFinder
Whitepapers
Microwave Legends
Newsletter
EuMW 2007
WebConnect
RF Design
RSS
RSS
Sponsored Links
 |
February 2005 [Components] Cascading Amp Stages For Higher Gain Amplifiers are designed for adding signal gain or achieving a target output-power level. As was demonstrated last month, it is possible to design a simple broadband amplifier for relatively flat gain performance from 50 to 1050 MHz. But if higher gain levels are required, it becomes necessary to cascade two or more amplifier stages, and the design becomes more complex. The final installment of this eight-part article series on transistor design addresses the steps that should be taken to... January 2005 [Components] Achieving High Gain Over Broad Bandwidths Transistor gain (S21) usually falls off with frequency. To create an amplifier with fairly constant gain over a broad bandwidth, otherwise known as a broadband amplifier, the transistor's input and output circuits must be arranged to favor the high end of the band and, possibly, to increase the mismatch at the low end of the band. Part seven of this eight-part series on transistor amplifier design will examine what needs to be done to achieve high gain over broad bandwidths.... December 2004 [Components] Approach Yields Low-Noise Amplifiers Low-noise amplifiers are vital for high signal sensitivity in communications receivers. Although the focus of previous articles in this series has been on achieving matched conditions for high and stable gain from a given transistor, this installment... November 2004 [Components] Applying The Operating Gain Design Approach Amplifier designers have so far learned about the use of the unilateral gain design approach as well as a method for achieving simultaneous conjugate matching of a stable transistor's input and output ports to its source and load. This month, the... October 2004 [Components] Method Simultaneously Matches Inputs and Outputs Engineers working on amplifier designs learned about the unilateral gain approach last month in Part 3 of this article series. That technique aims at simplifying amplifier design by providing an approximate solution, ignoring feedback in the... September 2004 [Components] Approach Increases Amplifier Gain Amplifier performance can be enhanced by understanding the electrical requirements of the active device, the transistor. As was seen last month in the second part of this article series, adding the appropriate stabilizing circuitry can make a... August 2004 [Components] Ensure Stability In Amplifier Designs Amplifiers can be designed as simply as by installing a transistor in a 50-Ω system. As was shown last month in the first installment of this article series, in this simple case, the gain at each frequency was just the square of the... July 2004 [Components] Applying S-Parameters To Amplifier Design Transistor amplifier designers rely on numbers to match active devices to surrounding circuitry and to each other. They may select a transistor from a catalog, but the circuit designer has no influence over the transistor's parameters. These are... |
|
||||||
Sponsored Links
Resources
Electronic Design