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Recent content by mmwave

  1. M

    what are the new frequencies that people are trying to use?

    There is substantial interest in the 60 GHz band for broadband digital links to solve the first/last mile problem. In the US, the FCC has opened up some spectrum at 60 GHz for unlicensed radio. There is a working group also looking at w-band around 90 GHz for the same type applications.
  2. M

    How do I measure the NF of an LNA without a noise source?

    dubus panfi Search for 8970B and you will find a lot of used ones for sale. I just bought one for $4600. including instrument cal but not a noise source. Noise source depends on your application of course, but are about $500 new.
  3. M

    network analyzer the price

    Re: N5250A Anritsu also makes an NA that covers up to 110 GHz for about 20% less money. Note that both the Anristsu and HP N5250A are not power levelled like the soon to be discontinued 8510XF. I am seriously considering getting the XF because of that. One problem that I have seen from all...
  4. M

    How do I measure the NF of an LNA without a noise source?

    hewlett packard hp8971c You can get an HP 8970B for under $5k these days. If that is too much, then try measuring change in amplified noise from a 50ohm load at room temp and when dipped in LN2. Then use the noise formulas to get NF and gain.
  5. M

    Is Eagleware's "GENESYS better than MWO and ADS?

    Symbolically defined devices (SDD) components in ADS make it very versatile for creating your own non-linear device models. If you get off the usual types of circuits that use pre-canned components, ADS has distinct advantages. Plus, ADS can be coupled to ICCAP to allow your models to be...
  6. M

    a question:the accuracy of ads moment ?

    Momentum does not accurately handle conductor thickness. This can affect accuracy on edge coupled structures like Lange couplers. Your best bet is HFSS if you know your conductor thickness accurately.
  7. M

    automobile OBD-II scan software/hardware

    obd2 software Anyone have any experience with automobile OBD-II scan software and hardware? There seem to be a number of vendors selling similar stuff. Some is clearly profe$$ional, but other like **broken link removed** appear geared to DIYs with interface kits and lots of references to...
  8. M

    Who can teach me how to model on chip capacitors?!

    I suggest for your application using Momentum to simulate the actual capacitor geometry you are using. You can import your gdsII file directly into the ADS layout to do this. If you define your silicon substrate losses correctly and also the process layers then you will get a very accurate...
  9. M

    antenna guy looking forward to exchange ideas or chat

    I need to design an ultra cheap narrow beam antenna for an industrial application. My current design uses a tapered slot antenna feeding a plastic lens, but the cost of the lens in teflon is way too high for the expected application. Anyone know of a cheap plastic that has reasonable loss at...
  10. M

    RFIC design using CMOS process - help needed

    What do you mean "iccap station"? ICCAP is a software program from Agilent (and EEsof before they got bought) that is optimized for model parameter extraction and instrument control?

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