IN MY OPINION

Interference: The Creeping Menace
By Anatech Electronics

Interference has been the bane of communication system designers since the earliest days of radio. At least back then, there were fewer sources to contend with but also far fewer remedies at their disposal.
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MILITARY MICROWAVE DIGEST


MMD March 2014
New Military Microwave Digest

ON THE MARKET


Band Reject Filter Series
Higher frequency band reject (notch) filters are designed to operate over the frequency range of .01 to 28 GHz. These filters are characterized by having the reverse properties of band pass filters and are offered in multiple topologies. Available in compact sizes.
RLC Electronics


SP6T RF Switch
JSW6-33DR+ is a medium power reflective SP6T RF switch, with reflective short on output ports in the off condition. Made using Silicon-on-Insulator process, it has very high IP3, a built-in CMOS driver and negative voltage generator.
Mini-Circuits


Group Delay Equalized Bandpass Filter
Part number 2903 is a group delayed equalized elliptic type bandpass filter that has a typical 1 dB bandwidth of 94 MHz and a typical 60 dB bandwidth of 171 MHz. Insertion loss is <2 dB and group delay variation from 110 to 170 MHz is <3nsec.
KR Electronics


Absorptive Low Pass Filter
Model AF9350 is a UHF, low pass filter that covers the 10 to 500 MHz band and has an average power rating of 400W CW. It incurs a rejection of 45 dB minimum at the 750 to 3000 MHz band, and power rating of 25W CW from 501 to 5000 MHz.
Werlatone


LTE Band 14 Ceramic Duplexer
This high performance LTE ceramic duplexer was designed and built for use in public safety communication and commercial cellular applications. It operates in Band 14 and offers low insertion loss and high isolation to enable clear communications in the LTE network.
Networks International

See all products in this issue


 
February 2014

Spoiled by Technology

I have been a licensed driver for more than three decades and have never received parallel parking assistance from anything other than my rear and side view mirrors. That is, until now. My new car has a rear view camera, now standard-issue like seatbelts, and it’s spoiling me. We’ve had a few snow issues here in the Northeast, and both Erin and I were in the parking lot, trying to find that rear camera lens on our cars so we could clean them off and use them…never mind that we’ve only had them a few months and managed just fine without them. We’re spoiled now, as we are with our Bluetooth-enabled music and navigation systems.

But wait, there’s more! Some cars currently have radar and laser sensors that alert you when the car in front of you makes a sudden start. The Department of Technology has been testing more sophisticated vehicle-to-vehicle communication that could let you know about potential dangers lurking even further away. They hope that it soon will join the ranks of standard equipment within the next few years.

So, as we edge even closer to cars that pilot themselves from point A to point B, our cars are becoming safer due to advances in wireless technology, and that’s a good thing. Now excuse me while I attempt to find that camera lens…

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FROM WHERE WE SIT

Uncertain Times for DefenseIn Defense of DARPA; Lamenting Bell Labs
By Barry Manz

A federal agency like DARPA is a sitting duck for politicians and assorted other critics. It has come up with some truly bizarre programs over years that ultimately either delivered no tangible results, were canceled before they could cause any damage, or attempted to answer questions that nobody was asking or needed answers to. Read More...


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