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Airplanes and Rockets:
Issue: March 2012
Anatech Electronics Receives Award from Cubic Corp.
We’re happy to announce that Anatech Electronics has received a Supplier Performance Award for 2011 from Cubic Defense Applications. Inc., a division of Cubic Corporation. The award is presented annually by Cubic to select suppliers that demonstrate significant effort. It recognizes the vendor’s excellent level of quality, on-time delivery, and customer service including satisfaction, cost, and responsiveness. Anatech Electronics has been a supplier of custom filter products to the company for many years.
LTE and Cable: Unhappy Together
Wireless communications and cable systems may be different domains, but they share at least one thing: operation at frequencies ranging from VHF through UHF (for cable, from 50 MHz through 750 or in some cases 860 MHz). Although the signals in cable systems are (or are supposed to be) safely sealed off from the outside environment, there are points in any system where signals can enter.
Studies have shown that if signals from LTE systems operating in bands between 693 and 806 MHz enter into cable systems and even to set-top boxes, they can degrade picture performance. The problem is caused by the particular characteristics of LTE signals and of course the frequencies where it being deployed in the U.S. The situation is only now developing in the U.S. as LTE adoption by consumers has been relatively slow, but as it becomes more widespread and more people upgrade to “4G”, things could get very interesting, very fast.
GaN Gains Ground
Strategy Analytics’ report “Compound Semiconductor Industry Review October-December 2011: Microelectronics”, states that gallium nitride (GAN) is “finally beginning to see acceptance in commercial applications, such as CATV and wireless infrastructure.” Accelerated activity includes growing interest in GaN-on-silicon processing to reduce cost and higher-voltage GaN processes to increase RF power output. The primary market for GaN RF power devices has thus far been almost exclusively military.
Did you know...
1. The names of all continents both start and end with the same letter
2. The 3 most common languages in the world are Mandarin Chinese, Spanish and English
3. The first letters of the months July through to November spell JASON
Bandpass Filter Basics
As bandpass filters are by far the most common filter type, Lyn Haun and Marlene Wurms, Anatech Electronics’ sales administrators receive more questions about their general capabilities than others. With this in mind, they offer some specifics:
Cavity bandpass filters can achieve bandwidths from 0.5% to 30% and interdigital types can achieve bandwidths from 10% to 100%. Operating frequencies range from 20 MHz to 20 GHz. Power handling ability can be at least 500 W CW and in certain cases considerably higher. Cavity filters deliver extremely high performance with low loss, and thanks to Anatech’s many years of design experience, can be made quickly in medium to high-volume. More info.
Ceramic bandpass filters can have center frequencies from 400 MHz to about 6 GHz, can handle about 5 W, and have achievable 3-dB bandwidths of 2 to 20%. They're characterized by good insertion loss performance, low cost, small size, and suitability for mass production. More info.
Surface acoustic wave (SAW) bandpass filters from Anatech operate from 425 to 6350 MHz, handle power levels of -10 to 0 dBm, and have 3-dB bandwidths of 2 to 20%. They are very small (typically 2 x 2 x 2 mm), very inexpensive, achieve very narrow bandwidths, and are designed for volume production. More info.
LC bandpass filters operate from 100 kHz to 3000 MHz, can handle average power of about 30 W, and can achieve bandwidths of 0.001 to 4.5%. They can achieve a very steep transition from passband to rejection, and can be connectorized, PC board or surface mountable, and drop-in. Insertion loss can be quite low and their frequencies can easily be shifted. More info.
Crystal bandpass filters operate from 5 kHz to 200 MHz with power up to 3 dBm, and have 3-dB bandwidths from 0.001 to 4.5%. Crystal filters are suited for single-band applications, have very high Q, can achieve very narrow bandwidths with sharp skirts, and are very temperature stable considering their very narrow achievable bandwidths. More info.
More information about the specific attributes of our filters can be found here.
In addition, our short form catalog provides addition information and can be downloaded here.
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A Message from
Wavering on IMS 2012? Some Good Reasons to Go
IMS 2012 is only three months away and some of the rumblings I hear are reminiscent of those I heard in 2007 when the symposium was in Hawaii. Specifically, that Montreal presents additional challenges that make people question whether it’s “worth going this year.” In Hawaii it was the cost, distance, and potential lack of traffic, and in Montreal it’s ITAR restrictions, customs, cost, and perhaps lack of traffic as well. As this is my 20th IMS (or rather MTT), it’s a familiar refrain. I heard this talk when the show was in St. Louis and Albuquerque as well. In every case – even Honolulu – the results for many or perhaps most exhibitors was that their fears were not realized.
So here are some good reasons to go to IMS 2012, based on the fact that it’s the world’s largest symposium featuring RF and microwave technology:
1. Regardless of where it is held, more people in the RF and microwave industry go to the IMS than any other show for this industry in North America.
2. While talking to attendees (and perhaps other vendors) about sales opportunities are the most obvious goals of attending any trade show, other reasons are equally compelling, like face-to-face meetings with clients and sales representatives and learning about what competitors are up to. Each one would cost more and take more time to accomplish any other way.
3. As an international symposium, IMS attracts people from countries all over the world, and especially Asia and Europe, which makes it a unique event.
As for Montreal: It’s a beautiful, vibrant city with a European “feel”, and has terrific restaurants and lots of interesting places to visit. So if you were already going or my arguments have convinced you, make sure you come see us at Booth 315.
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