Antenna Systems & Technology - Winter 2015 - (Page 4)

EDITOR'S CHOICE IEMRadiator Uses Circular Polarity and Horn Radiators for Improved IEM Reception Kaltman Creations LLC has introduced the IEMRadiator antenna. The IEMRadiator is not like a traditional paddle or helical antenna commonly used with In-Ear-Monitoring systems. The antenna incorporates a unique combination of advanced circular polarization technology with a horn style radiator for directional, high-gain enhanced radiating transmission that is never out of phase. This technology provides as reliable and as efficient of an RF signal link as possible. The antenna is guaranteed to reduce interference, reduce drop outs, help eliminate 'swishing' noise artifacts, improve RF signal to noise, and enhance reception of signals propagated through and around objects. Traditional paddle and rod antennas used for wireless In-Ear-Monitor (IEM) are either horizontally or vertically polarized (usually vertically). When an In-Ear-Monitor receiver antenna changes its orientation in reference to the transmitting antenna, as wireless IEM belt pack receivers always do, the phase relationship changes. This results in decreased signal levels. The IEMRadiator design is unique in many ways, the most obvious being its rugged flat panel design and 'thumb-screw' removable horn radiators. But, unlike paddle and helical antennas, the novel design features forward enhancing horn radiators that increase gain and directivity, creating a more robust and reliable radiated signal. It has a frequency range of 470 MHz to 890 MHz, with gain of 10.5 dBic. New Internally Matched Broadband RF VGA with Ultra-High Linearity Integrated Device Technology, Inc. has introduced the F0480, an internally matched 400 to 2,700 MHz broadband radio frequency (RF) variable gain amplifier (VGA) designed to simplify the design process while ensuring a more reliable implementation. The device delivers improved RF performance by combining IDT's Glitch-Free digital step attenuator, and Zero-Distortion technologies in a 5 by 5 package. The chip offers better moisture sensitivity and protection from electrostatic discharge (ESD) for a more robust and reliable technology than Gallium arsenide (GaAs) devices, which require external matching and can suffer from delayed secondary avalanching. It is suited for such products as cellular 4G base stations, broadband repeaters, distributed antenna systems and microwave backhaul equipment. 4 Antenna Systems & Technology Winter 2015 Volume 18 / Issue 4 Editor & Publisher David Webster Director of Content Nick Depperschmidt Senior Editor Shannon Given Associate Editor Heather Williams News Editors Sue Hannebrink Scott Webster, Robert Schaudt Advertising Sales and Marketing Robert Schaudt, Advertising Sales Manager Administration Marsha Grillo, Director Support Services/Circulation Marc Vang, Director Ross Webster, Data Entry Webmaster CJ Brewer Production Julie Hammond ANTENNA SYSTEMS & TECHNOLOGY (ISSN #1092-2553) is a publication of Webcom Communications Corp. Subscriptions for one year (bi-annually) are free to qualified recipients in the U.S., $44 for non qualified U.S. and $60 outside the U.S. Single copies are $20 each plus shipping. Back issues are available. Payment must be made in US funds in order to process the order. Direct all subscription inquiries, orders and address changes to Fulfillment Services. © Copyright 2015 Webcom Communications Corp. Material in this publication may not be reproduced in any form without written permission. Requests for permission should be directed to the customer service manager. Reprints: For reprint requests contact Webcom Communications at 720-528-3770. Webcom Communications Corp. 7355 E. Orchard Road, Ste. 100 Greenwood Village, CO 80111 Phone 720-528-3770 Fax 720-528-3771 www.AntennasOnline.com www.AntennasOnline.com http://www.AntennasOnline.com http://www.AntennasOnline.com

Table of Contents for the Digital Edition of Antenna Systems & Technology - Winter 2015

Table of Contents
Editor’s Choice
A New Leap Towards True Software-Defined Radio
SON: The Future of LTE Network Deployments and Operations
Manufacturing of Zero-Centered Antennas for High Precision Positioning with Global Navigation Satellite Systems
Mission-Critical Flight Line Testing
Antennas
Components/Subsystems
Test & Measurement
Industry News
Marketplace
Tighter PIM Requirements for Multiband DAS

Antenna Systems & Technology - Winter 2015