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  • Users: lighterup
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  1. lighterup

    Patent No. 6,901,353

    Has anyone here tried the Normalized Hilbert Transform method described in the subject patent for instantaneous frequency measurement? We are thinking about trying it on some radar signal processing applications and possibly licensing it. I would appreciate any feedback you may have on it...
  2. lighterup

    Absorber Question

    I am having trouble with what I believe to be parasitic scatterers in the support structure of a circular antenna array. My proposed solution is to install a layer of tuned elastomeric absorber, such as Cuming C-RAM FLX inside the radome below the array to keep the transmitter from lighting up...
  3. lighterup

    Fuel Consumption Sensing

    I rented a luxury Buick on a business trip the other day, and in addition to XM radio and lots of other goodies, I noticed it had a real time readout of fuel consumption in MPG. Does anyone here know what sensor is used to calculate this? ie fuel flow, fuel weight, etc etc. Also, are there any...
  4. lighterup

    Radiated emissions testing

    I am looking into retrofitting one of our Agilent 4407 spectrum analyzers as an emi receiver for doing in-house precompliance testing for the MIL-469E RExxx tests. Does anyone know of a good, reasonably priced alternative receiver with all the specs needed to do measurements prior to shipping...
  5. lighterup

    Material question

    I have an unusual requirement for a cotton-like material which will not accumulate surface charge as readily as nylon or teflon fibers. This material needs to be moisture resistant like nylon, and also needs to be transparent to radio frequency energy. Most of all, it needs to be durable and...
  6. lighterup

    Radome Material Question

    The system is a cylindrical phased array. The antenna elements are dipoles at DC ground potential. The problem: 1) Due to weight and packaging constraints, must use a flexible, lightweight material as a weather-resistant radome. 2) Due to flexibility requirement, the radome contact with the...
  7. lighterup

    Model of CPLD I/O

    I am trying to look at the effects of filtering the outputs of a XILINX XC9500 family part in order to cut down on EM emissions and susceptability. I am not interested in getting into the whole IBIS thing offered by XILINX. I have a simple SPICE simulation set up, and would like to model the...

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