Week of Events
NH IEEE Meeting – “DISTRIBUTED PHASED ARRAYS: CHALLENGES AND RECENT PROGRESS” by Dr. Jeffrey Nanzer (Distinguished Microwave Lecturer)
NH IEEE Meeting – “DISTRIBUTED PHASED ARRAYS: CHALLENGES AND RECENT PROGRESS” by Dr. Jeffrey Nanzer (Distinguished Microwave Lecturer)
Single-platform phased arrays currently dominate wireless systems, whether they be the handheld 4G/5G cell phone you’re carrying right now, or large radar systems and satellites. Single-platform phased arrays traditionally use an analog feed network to distribute signals between the antenna elements and a single centralized transceiver; improving performance entails a redesign or retrofit. In contrast, a distributed phased array consists of a number of separate wireless nodes where each antenna element is connected to a separate transceiver; signals can be coherently transmitted to enable beamforming and/or coprocessed on receive to coherently form beams digitally. With beamforming, distributed phased arrays overcome the limitations of single-platform-centric phased array wireless systems by disaggregating the functionality of large wireless systems into an array of smaller, cheaper nodes that are wirelessly coordinated and provide these benefits: enhanced signal gain, increased reliability, scalability, adaptability, greater spatial diversity (better SNR, think less cell phone fading!). Come hear this broad overview presentation introducing distributed phased arrays that will affect all forms of wireless communication, including the potential microwave system solutions to the challenges of implementing a practical distributed phased array undergoing real-world dynamics. This free talk is intended for both a general IEEE audience and MTT/AP Society members; all are welcome. (IEEE events are open to all; you do not have to be an IEEE member.) Speaker(s): Jeffrey Nanzer, Ph.D., Agenda: 6:15 PM to 6:30 PM Meet and greet 6:30 PM to 7:30 PM Presentation 7:30 PM Optional dinner with speaker at a nearby restaurant Room: 128B, Bldg: College of Engineering, Technology, and Aeronautics (CETA), Southern New Hampshire University (SNHU), 2500 North River Road , Manchester, New Hampshire, United States, 03106
Introduction to Mechanical Design Using FreeCAD
Introduction to Mechanical Design Using FreeCAD
The design of solid parts has progressed from the manual generation of “blueprints” to the computerized generation of 3D drawings which can display the part in a variety of views, including isometric. There are numerous commercially available CAD programs and a few open-source ones. (https://www.freecadweb.org/) is a full-featured open-source program which can be freely downloaded from the FreeCAD web site. In this presentation the features of FreeCAD that make it attractive will be described, and a step-by-step procedure for generating a drawing of a moderate complexity part will be presented. The file of the designed object generated by FreeCAD will be suitable for fabrication using CNC machining or 3D printing. Some of the nuances and pitfalls of CNC machining will also be discussed. George Vella-Coleirois a retired Physicist who spent most of his career (1967 – 2001) at Bell Laboratories working on a variety of projects, including Magnetic Bubble Memories, Superconducting Josephson devices, GaAs MESFETs and ICs, Integrated Optoelectronic Devices, and a fiber-optic Microcell for cellular communications. From 2001 to 2019 he was with Commscope developing Digital Predistortion for the linearization of RF power amplifiers, a GPS interferometer for determining the azimuth of Cellular Base Station antennas, and a 5G microcell using mm-Waves. Co-sponsored by: IEEE Consultants’ Network of Northern New Jersey Speaker(s): George Vella-Coleiro, Agenda: Introductions Speaker presentation Audience questions welcomed Networking Virtual: https://events.vtools.ieee.org/m/323653