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Issue: August 2011
IN THE NEWS...
1. Who graciously switched to number 77 so Phil Esposito's number 7 could be
retired in Boston Garden?
A Message from Sam Benzacar
The Invasion of Digital Devices
It should really be no surprise to anyone that defense system manufacturers are attempting to remove as much analog (read: microwave) content in the receive chain as they can between the antenna and the point at which the signal is downconverted to baseband. Testament to this fact are the comments from a large number of manufacturers quoted in the July issue of the Journal of Electronic Defense. There are enormous advantages to working with a signal in the digital domain: extraordinary amounts of signal processing can be performed in near real-time, the systems themselves can be smaller, and the tweaky nature of analog components can be dispensed with, to name a few.
While this is an enviable goal, and one that is all but a necessity considering the complexity and increasing density of threats, the fact remains that with the current state of the art in analog to digital converters, only a single stage of those analog components can actually be eliminated. That's because it's currently possible to sample only at an input frequency of about 2 GHz. Above that frequency, the traditional mixing stages, low noise amplifiers, and filters that form downconversion schemes are still required and are likely to be for a very long time. Converters, unlike microprocessors, don't follow Moore's Law and massive enhancements are years in coming. On the transmit side, the picture is even brighter for microwave manufacturers because high-power components cannot be replicated by digital techniques, and until someone figures out how to generate RF power with a digital device, RF power transmission will remain firmly in the microwave camp. The signal may be digital but the devices that transmit it will continue to be analog.
As interference to defense systems is on the increase, the need for filters is also virtually assured. More and more frequently, we receive requests to mitigate interference issues in systems installed in the field. This can result from the fact that interference issues were not correctly addressed when a system was installed or new interference has popped up since then. For more than 20 years, we've been solving problems like these with high-performance filters that have extremely high rejection, high power handling ability, and exceptional ruggedness.
So if you're facing this challenge, please reach out to us at (973) 772-4242, or by e-mail at firstname.lastname@example.org.
VISIT US AT MILCOM 2011
1. What Grand Slam golf tournament has the most clubhousers sipping mint
juleps? The Masters
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70 Outwater Lane
Garfield, New Jersey 07026
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