Free Webcast: What Will 5G Be?

Author: 

Joe Boccuzzi

This webinar will provide an overview of areas 5G will address. We will begin with a sdiscussion on the shortcomings of present day cellular systems to highlight the items needing to be addressed in 5G. Provide the overall 5G goals and pillar use cases as defined by ITU. Several deployment options will be provided and summary of the 3GPP scenarios provided. Key system parameters will be discussed and the impact of 5G to a Cloud-RAN network architecture will be highlighted.

Transmission Line Elements on Smith Chart Web App

I've successfully added transmission line elements to the Smith Chart matching web app here on RFMentor.com. These include series, shorted shunt section, and open shunt section. There's a trick you can use to have these transmission line elements use an arbitrary characteristic impedance. The elements adopt the same characteristic impedance as the chart normalization impedance (default is 50 Ohms).

Femtocells: Design & Application

Author: 

Joe Boccuzzi

This in-depth resource provides comprehensive coverage of femtocells and how they integrate with existing 3G and emerging wireless protocols and standards. Femtocells: Design & Application provides a technical roadmap for migrating to femtocell technology, covering network architecture, media protocols, system performance, and security issues. Detailed architectural diagrams illustrate various deployment options. This is a practical guide to the pioneering technology that enables extended indoor service coverage.

Analytical Impedance Match with Python

I created a quick Python function to calculate the component values for an impedance match between two real (resistive) terminations using the technique taught in the Introduction to Impedance Matching course.
Here is what the code ends up looking like, and it shows how useful Python can be for working as a "quick programmable calculator." In the old days, I might have been tempted to program my old HP48 calculator to crank out the same values. It only took a few minutes to put the code together, which is the beauty of working with Python.

Smith Chart Matching HTML 5 Version

An early version of the Smith Chart web app is now available to try out. There are a couple of issues that I will be working on initially, such as the frequency entry dialog box appears to be transparent for some reason. I'll also be working on the layout to try and make the various parts of the app fit better on the page. At the moment, the app is only optimized for mouse input and does not respond to touch-based dragging events (to move elements around on the chart).

Free Webcast Tutorial: MMIC Design Overview

Author: 

Ali Darwish

Instructor Ali Darwish has presented a free MMIC Design Overview webinar with Microwave Journal Magazine.

This webinar gives an overview of some of the practical strategies required to achieve success in the design of monolithic microwave integrated circuits (MMICs).

The following topics will be covered:

  • The advantages and limitations of MMIC Designs.
  • Active device modeling.
  • Calculating the lifetime of MMICs.
  • Modeling passive components.
  • Preventing unwanted oscillations.

Smith Chart Matching Web App

I've made substantial progress in developing the JavaScript version of the Smith Chart matching applet. The interface components that allow for changing frequencies and viewing component values have basic functionality at this point. A basic interface for setting the chart impedance is all that is needed and then all of the basic pieces will be in place. I should be able to make it available users very soon - although the appearance will start out a bit "unrefined".

Free Webcast Tutorial: Passive Components: Dividers, Couplers, Combiners

Author: 

Bob Froelich

Instructor Bob Froelich presents free webcast with Microwave Journal on Passive Components: Dividers, Couplers, and Combiners. View the webcast recording via Microwave Journal.

Outline:
Power Dividers

  • 2-way, 3-way and N-way
  • Isolation and loss
  • Phase relationships
  • Uneven power division
  • Combining RF power
  • Directional Couplers

Properties

Self-study Guide: RF Small-Signal Amplifiers (LNA)

Back in the mid-1990's, Les Besser and I wrote a series of articles on RF amplifier design for Applied Microwaves and Wireless magazine (unfortunately this magazine is no longer in circulation). Since that time, Les Besser and Rowan Gilmore have written a two-volume textbook on RF circuit design that covers this topic as well as a great deal of background knowledge on working with RF circuits.

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