Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Recent content by wccheng

  1. W

    Spiral inductor synthesization using ADS Momentum EDA tools

    Hi all, I am using Momentum to synthesize the spiral inductor. I have created the substrate description file for Momentum usage. I have checked that the input parameter is correct. Then I use this to synthesize my simple spiral inductor. This is using the Top metal (M6) to make a spiral...
  2. W

    calibre check metal is wide enough for current flow

    Dear all, I am using Calibre to do DRC, LVS and PEX extraction. Does Calbre provide any tool for checking drawing metal width is wide enough for current density pass through? Something like Cadence Voltage Storm. thanks
  3. W

    HFSS VIA connection between metal6 and metal5

    Dear all, I have a question about the HFSS VIA usage. I hope anyone could teach me. Actually, I use HFSS to synthesize the CMOS inductor and transformer passive model. As you know that there are several substrate layer with different permittivity value. In my case, each metal embedded...
  4. W

    Quadrature upmixer LO leakage power level increases as input IF power level increase.

    Just a typical Gilbert cell mixer structure.
  5. W

    Quadrature upmixer LO leakage power level increases as input IF power level increase.

    Dear all, I have designed a quadrature upmixer. However, I found a strange things about the LO leakage power level. I still could not find out the reason. I hope anyone could give me some suggestions. My case is as follow: Input IF = 10MHz LO = 2000MHz Output up-converted RF =...
  6. W

    up-conversion mixer output 3rd-order intercept point setting is correct?

    Dear all, I have a question about the output 3rd-order intercept point simulation frequency setting in up-conversion mixer. I hope anyone could correct me if I am wrong. For example, my upmixer is with input IF, input LO and output RF. For 1dB compression point...
  7. W

    How is the up-mixer noise measurement?

    Dear all, Does anyone teach me the up-mixer noise measurement? Any material could be as reference? Thanks,
  8. W

    Transformer model simulate in Spectre pss. PROBLEM

    finally, I found it is caused by the bug of the spectre. After I use another version, the problem is solved.
  9. W

    Transformer model simulate in Spectre pss. PROBLEM

    So poor!!! I have tried to add 1G-ohm resistor to ground in each transformer node. The pss is still failed :(
  10. W

    Transformer model simulate in Spectre pss. PROBLEM

    Thanks for your helping BigBoss. I will try it on monday and tell you this is work or not. :)
  11. W

    Transformer model simulate in Spectre pss. PROBLEM

    However, I need to use this transformer in my mixer design. So, I need to use PSS + PAC. How could I simulate it? thanks
  12. W

    Transformer model simulate in Spectre pss. PROBLEM

    Dear all, I am using ADS momentum in Virtuoso to synthesize one transformer. I use this transformer for differential input and single output. I have tried to simulate stand-alone transformer model in spectre pss, dc, sp. It could simulate out. After I connected this transformer in...
  13. W

    2port Z or Y parameter simulation problem

    Dear all, I have a 2-port DUT circuit. I connect port-1 is a input port and port-2 is a output port. I am using Spectre simulator. During S-parameter setting, it provides a box to select which port doing s-parameter simulation. I found that the Z or Y paramenter simulated result is...
  14. W

    Loading problem in the Tx chain

    Hi chuckey, Thanks for your reply. Actually, my upmixer output connects the driving amplifier input. So, I could not put 50 ohms as my upmixer output. I have tried to simulated the DA input and find the equivalent input circuit. It is 4pF // 60-ohm. I have tried to connect this...
  15. W

    Loading problem in the Tx chain

    Hi chuckey, I have tried to add a parrallel inductor in the input of the driving amplifer. It could not work. Do you think the input loading of DA is too large and makes it hard to obtain a gain in a high frequency? Thanks, wccheng
See more

Part and Inventory Search

Back
Top