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Issue: April 2011


And see our filters for wireless applications


Baltimore is a terrific place for a symposium, and we hope that if you are planning to attend you'll visit us at Booth 4507 We’ll have filters, couplers, duplexers, power dividers, and many other components for wireless applications on display, along with members of our technical staff to describe them and discuss your requirements.

How to Specify RF and Microwave Filters

This handy document provides an overview of filter types, including cavity, ceramic, crystal, LC and SAW, and describes the applications for which each type is best suited.

To download the PDF – click here.

Lumped-Element (LC) Filter Basics

Learn about the characteristics of the LC, or lumped element, filter, one of the most common of all electromagnetic filter types. This document describes response types, key parameters to consider when specifying LC filters, and much more.

To download the PDF – click here.

Specifying Filters: Get it Right the First Time!

It’s often been said that no two filter applications are exactly the same. That why it’s essential to understand their basic performance parameters in order to specify a filter that can be realized in production and will deliver the best combination of characteristics. This document provides insight into various considerations and is useful for novices and veterans alike.

To download the PDF – click here.

Key Parameters for Specifying Filters

This handy guide lists all of the key parameters to consider when specifying various types of filters, diplexers and duplexers, directional couplers, circulators, and power combiners and dividers.

To download the PDF – click here.

Useful Definitions for Specifying Filters and Other Products

This document defines parameters that are important to understand when specifying filters, filter-based products, directional couplers, power dividers, and circulators.

To download the PDF – click here.
New Filter Calculator!

Automatically defines filter shapes and values, and key values for many component types.

Use the calculator

Greetings {FIRST NAME},

A Message from Sam Benzacar


Just One More Job for Filters…
The latest twist in the LTE market has “FILTERS” written all over it. A company called LightSquared, funded by hedge fund billionaire Phillip Falcone through Harbinger Capital Partners and run by the former CEO of French telecom giant Orange Group, is about to offer industry’s first wholesale LTE offering. Instead of providing its own service it will sell its capabilities to others (Best Buy is already onboard) to create their own branded services. The LightSquared network will use a single, massive, satellite built by Boeing (one of the largest ever built) and 40,000 base stations to be built by Nokia Siemens Networks to provide coverage throughout the U.S.

The problem is that LightSquared’s base stations are not your average variety. They will operate at L-band Mobile Satellite Service (MSS) frequencies right next to GPS frequencies and will reportedly have RF outputs of 12 kW or more. Obviously, as signals from GPS satellites are very weak and the signals from the LightSquared base stations will be very strong it seems certain that interference will be an issue. Even if LightSquared keeps spurious and harmonic emissions incredibly low, at 12 kW (and this may not even be EIRP), they’d have to be way, way down to eliminate interference. Nevertheless, apparently fulfilling its goal of offering broadband everywhere, the FCC has given the company the green light to proceed IF it can provide significant proof that its signals will not cause interference.
Obviously, a lot of people think the plan is a potential for disaster, as GPS is first and foremost a defense platform and second a platform on which commercial services and products are attached. It is, they feel, under threat by the LightSquared network. GPS was located in a quiet portion of L-band that is comparatively unpopulated by high-power services. That is, until now. As Bradford Parkinson, emeritus professor at Stanford University’s Aeronautics and Astronautics Department, was quoted as saying in Aviation Week, “Effectively, the FCC is directing that a quiet-spectrum neighborhood be rezoned for concert rock bands at the threshold of pain. And LightSquared is suggesting that its current neighbors simply add more insulation to their houses.”
Regardless of how this shakes out, unless LightSquared flops filtering has just become a lot more important for designers and users of GPS systems. Typical GPS filter skirts will have to become sharper on new and existing GPS systems.
Anatech Electronics is here to help. We’ve been designing and manufacturing filters for GPS, INMARSAT, and many other commercial and military satcom systems for more than 20 years.
To find out more, call us at (973) 772-4242 or send us an e-mail at

Sports Trivia Questions!

1. What NBA team plays home games in the Alamo dome?

2. Who was the first female jockey to win five races in one day at a New York track?

3. What woman won five U.S. figure skating titles from 6 to 173, but never an Olympic gold medal?


Finally, a logical article on mobile phone safety

Is there a significant health risk associated with long-term exposure to electromagnetic radiation from mobile phones? It looks unlikely – but not impossible. One thing about this contentious debate is clear: everyone involved has an agenda. A recent article in the New York Times is one the most comprehensible, honest, and informative we have ever seen. It presents all sides of the issue in clear terms and lets readers draw their own conclusions. It’s excellent reading for anyone even remotely interested in the issue. The author is Siddhartha Mukherjee, an assistant professor of medicine in the division of medical oncology at Columbia University, and author of “Emperor of All Maladies: A Biography of Cancer" which just won the Pulitzer Prize for general non-fiction. It’s excellent reading for anyone even remotely interested in the issue.

3 Billion+ Asian Mobile Subscribers by 2015?

A recent report from InStat ( predicts that by 2015 there will be more than 3 billion cellular subscriptions in the Asia/Pacific region, 10 million LTE subscribers in the U.S. by the end of 2012, and 100 million 3G Eastern European subscribers in 2013. Another interesting prediction from InStat is that global CDMA2000 Rev. A subscribers (in the U.S. that’s Verizon and Sprint minus their “4G” offerings) will peak at 130 million and decline thereafter, as the carriers transition to LTE.

Official LTE

4G on a Roll
According to an article in Above Ground Level magazine, Verizon Wireless will add 59 more markets to its 4G LTE network by the end of the year, which added to the 39 launched in December and 49 in January brings the total to at least 147. T-Mobile USA claims to have achieved "theoretical" throughput of 42 Mb/s in the Las Vegas, New York, and Orlando markets, twice that of current “theoretical” rates. This will be followed by Chicago, Long Island, and Northern New Jersey.

In Brief

It’s apparently real: The long-awaited white iPhone is apparently “real” and soon to be offered for sale: PC magazine
New from DoD: High-Powered Microwave Weapons. Aviation Week

Answers to last month's Sports Trivia Questions

AEI Did you know

1. What decade saw names first appear on the back of NFL jerseys? The 1960's

2. What position must college footballers play to receive the Davey O'Brien Award? Quarterback

3. What racing competition became a best-of-nine series in 1995? The America's Cup

 Tel: 973-772-4242 | Fax: 973-772-4646


Anatech Electronics, Inc.
70 Outwater Lane
P.O.Box 2217
Garfield, New Jersey 07026

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