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Recent content by Element_115

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    s parameters for small length wires

    As a crude method to simulate you can use a stripline element, make Er =1.0, the Thickness &width = the diameter of the wire, L = 1cm , and the substraight height will be your closest ground reference distance. But at 3-10GHz expect orders of magnitude variation between simulation and...
  2. E

    Input power for IP3 calculation

    You should take an IP3 measurement at ~10dB backed off from the PA's / RF Chains P1dB point. Thus reduce the I/P pwr till the O/P pwr is ~ 10dB lower than the P1dB point. You need to be in the Amp's linear region. If you put too much power you will be compressing Amplifiers, and the IP3 will...
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    Agilent e4438c baseband I/Q signal source frequency question

    From memory. You need to create a file of the modulated waveform (Look at the literature from Agilent on how to do that ). Once you have the file in memory you select the segment/waveform. On the same window when you select / load the file there is a setup option. It is the frequency of the...
  4. E

    Help to confirm this simple math calculation with dB's

    I think there was a misnomer . dB vs dBm dB is a ratio , and dBm is a power referenced to 1mW. So 60dB + 60 dB is not a clear statement. Unless you mean a factor of 1000 + another factor of 1000 ?... 60dBm + 60dBm should mean adding 1,000 W with 1,000 W which =2,000 W & 2,000 W = 63dBm ...
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    How to convert the tabular data into EXCEL sheet in AWR Microwave Office(MWO).

    Just open excel, then Click "File" -->"Open" Search for this file, and open it. Then select the "Delimited" option, and click next. Then select if you need Tab, Comma, Space, or Special Charter to partition you file properly. Cheers
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    Impedance matching using resistors?

    These are called "Min-Loss Pads". There is a minimum amount of loss that you must incur when going from one Zo value to another. Here is a good tutorial. https://www.maximintegrated.com/app-notes/index.mvp/id/972 You can also search for the Pi / T Pad attenuator tools on line and see what...
  7. E

    Agilent ADS 2011.01 installation problems

    Did you go in to "Reg Edit" and make sure the ADS software was deleted from there too ? https://www.wikihow.com/Delete-a-Program-Completely-by-Modifying-the-Registry-%28Windows%29
  8. E

    Help with ADS Layout

    You can export your ADS file as a DFX, then Import that DFX file in to a PCB Layout program, and do you partitions in that program.
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    how find S12 or S21 in a 2 port structure with HFSS?

    Your question is not too clear. First it sounds like you have a 3-port network, and depending on which port you consider the input and output you might want S23 or S31.... You should show a diagram or the layout of your design and you might get a response. You can try to graph your simulation...
  10. E

    Need help to understand simulation results of rectifier circuit in Agilent ADS 2009

    I think you have a few issues. 1) The TL1 is acting as a matched load at the input of your circuit, and TL 2 and the Didoes ect is in parallel so that will cause a mismatch. 2) Your third terminal of your Diode is not connected to anything, so it's a high impermanence open, and does not...
  11. E

    I need HFSS proffesionals in this topic ..

    First you should always search this website for your question. Then after you find all the info that has already been given, form a better question that has not been answered.
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    [SOLVED] Idea Transmission line in ADS: single ended, why ?

    When you use Strip lines / TL you will have to put the substrate information on the MSUB. This defines an assumed return path on the ground plane. Just go make a 1Lamda Zo TL in the schematic then send it to Momentum(Layout) and see how they defined that circuit/PCB. This should help.
  13. E

    how can i adjust the resonance frequency of the printed dipole ?

    With out more info all answers/suggestions a based on assumptions ! So if you have this antenna on a PCB you can changes the εr to a higher number. This will reduce the length of λ so with the same real estate you will have a lower resonate frequency . If you double your εr of the PCB that...
  14. E

    Impedence Matchin using SMITH CHART

    Here is a good tool to use. www.bessernet.com/jobAids/jSmith/jSmith.html Here's
  15. E

    Coupled Line BPF Problem

    You need to realize that a 1/2 λ at 1.6GHz is ≡ 1λ at 3.2GHz, so this effect will always be true. You can add a LPF that Rolls off at ~ 2.3GHz. Cheers

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