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Recent content by jadnounyah

  1. J

    Starting an MMIC design

    Yhyh I know about this one, wanted to know if there was another way around it. But it seems there is still no way to use just the active device minus its CORRESPONDING foundry for MMIC designs. Main access to the foundry as an individual is an uphill battle too. Thanks
  2. J

    Starting an MMIC design

    Yes please, I want to try a project on MMIC design and TGF2120 happens to work 0.25 um GaAs pHEMT technology from it's datasheet. Based on that, it should qualify for MMIC designs right? So I want to design something around the active device. A balanced amplifier, resistive feedback,etc. But I...
  3. J

    Starting an MMIC design

    Thanks alot for such info, with the small signal, I think with the constraints of obtaining a device, I will have nothing to do with large signal analysis.
  4. J

    Starting an MMIC design

    I am new to MMIC, mostly been doing hybrid designs, I have the s2p info for an active device but will that be enough to perform a design like for a simple amplifier?( I mean can I implement, the ideal transmission lines for the design since it will not be in actual lengths(mm/um) ?) . Or I would...
  5. J

    How to calculate MMIC MLIN Length and Width using ADS

    Sorry, I have a question that has nothing to do with the current question but it is on MMIC design though. I am new to MMIC, mostly been doing hybrid designs, I have the s2p info for an active device but will that be enough to perform a design like for a simple amplifier?( I mean can I...
  6. J

    Bilateral Impedance Matching Design

    Oh alright then. Thanks a lot for the info, with the biasing, first time working with s2p files so it got a bit away from. I'll take your advice into serious consideration though. Thanks
  7. J

    My quarterwave coupler is not working after ADS simulation

    Oh alright then, I did obtain the answers then, I obtained such results as you did as well. Thanks alot. I actually thought since I wasn't getting the -10 dB coupling coefficient I was wrong.
  8. J

    Bilateral Impedance Matching Design

    You used the impedances obtained from your sparameter simulation to match. I am having trouble even with the unilateral match. I test the circuit using the s11* and s22* and the matching is still poor. So I don't even know how to perform the bilateral matching since my impedances are being funny...
  9. J

    My quarterwave coupler is not working after ADS simulation

    Yhyh I understand your method but from the attachment I have included, see I am supposed to follow specific steps to get the even/ odd mode analysis and that is why I am kind of trying to find the issue with it. I am not denying the effectiveness of your method.
  10. J

    Bilateral Impedance Matching Design

    I thought that was for unilateral matching? Doing the matching separately? 1708092040 Thanks a lot and I'm also reading Gonzalez's book on the design. Very helpful. 1708092255 That was what I obtained after running simulation for Sparameters with biasing. How do I make it better?, I believe...
  11. J

    My quarterwave coupler is not working after ADS simulation

    I'm pretty sure it was the data display I brought on here, I don't know what was wrong too. I have fixed that but with respect to the new circuit I have added(with the divider and shifter) above in one of the comments . How am I not getting the coupling coefficient graph showing a -10 dB value...
  12. J

    Tapered Transmission line match

    Yhyh I have checked this out but i can define the minimum return over which bandwidth I want to obtain after matching. Is that enough? I have read the book itself on the match though.
  13. J

    Bilateral Impedance Matching Design

    I used S11 and S22 as a first step in finding the simultaneous matching network, but I'm not sure where to go from here. They outputted: S11 @ 2.4GHz = 1.339+20.873j S11 @ 2.4GHz = 18.634+12.409j How do I go about the bilateral design from here, I really don't know how to get the matching done...
  14. J

    Tapered Transmission line match

    the frequency of operation is 3 GHz and, I want the lower bandwidth of operation to be from to be 1 GHz, since tapered matching produces a wide bandwidth which would eventually cover the center frequency of interest. I looked up linear, exponential and klopfenstein tapers but they all seem to...

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