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Recent content by CQCQ

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    Why Sonnet needs 170GB MemoryWhen I do simulation

    Hi,I'm using sonnet to simulate a mmic chip,the cell size is 5umx5um,while the solver displayed its needs 170GB Memory ! I was using momentum to simulate it successful and only needs 22GB memory with 100cells/wavelength setting.
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    How to renumber the instance name in ADS?

    I'm using ADS2013.06,So is there any to do it?
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    How to renumber the instance name in ADS?

    Thanks! But I have too many comonents to change the instance name one by one. Any other way to solve the problem?
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    How to renumber the instance name in ADS?

    How to renumber the instance name in ADS?
  5. C

    About the T-juntion power divider

    Hi!I got a simple but awkward problem about the T-juntion power divider.I am using a T-juntion power divider to dividing a signal from port1(50ohm) to port2 and port3 and the two port's are 25ohm load(pic1).While from the simulating result(pic2) I see the port1 is matched to 50ohm ,but the...
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    Load Reflection coefficient of Triquint TGF2021-04 FET

    Hi!I got a simple but awkward problem. TGF2021-04 datasheet says the load reflection coefficient per 1mm unit pHEMT cell at 10 GHz is 0.852 ∠ 172.5≈4+j2,TGF2021-04 is a 4mm device(four cell ),So,What is the best load impedence when I connect the four cell together? (4+j2)*4 or (4+j2)/4...
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    Lumpport in HFSS...the excitation is applied at a point?

    Hi! "With lump port=> the excitation is applied at a point/cell, as a voltage or current. With wave-port=> the excitation is so-called eigen-wave, such as the quasi-tem wave supported by a microstrip line. It applies over a cross-sectional area. voltage is scalar, wave is vector by nature...
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    The Width of the lumpport in HFSS

    up......
  9. C

    The Width of the lumpport in HFSS

    Thank you mauroferrari_ up....... Added after 16 minutes: fig2 fig3 The lumpport width same as microstrip width fig4 The lumpport width same as device pin width So which is right in my design? Thank you! -CQCQ
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    The Width of the lumpport in HFSS

    Hi I am very new to using Ansoft HFSS,As the fig 1,If the microstrip width is 10mm,the device's pin width is only 0.25mm.So,What the width of the lumpport I need setting?the same as the microstrip(10mm) or as the pin(0.25mm)? Thank you ! fig 1 **broken link removed** **broken link removed**
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    reflections on transmission line

    reflection in transmission lines Hi biff44,Thank you very much! As you said , I need to move the Reflected Wave(Erefl) to LINE1? I have do some simulations in ADS I found If I consider the Reflected Wave on the LINE2 is not satisfy "V total" equ E inc + E refl.
  12. C

    reflections on transmission line

    reflections in transmission lines Hi! I have some basic problems need help ... plz see the picture, I dont know why the "V total" equ E inc + E refl ,"I total" equ I inc -I refl ? Any good paper or something can help me understand this problems? Thanks in Adnance! -cqcq
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    Any papers introduction zero and pole analysis suggesting?

    Any papers introduction zero and pole analysis especially basic suggesting? Thanks! -cqcq
  14. C

    Any book about design FET suggestting?

    Any book about design FET suggestting? such as Gaas FET or others. Thanks -cqcq
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    Matching 5 ohm to 50 ohm in 50-1500MHz,impossibly?

    Hi! I have a big problem is a Power FET's i/p Z is around 3-7 ohm in 50-1500MHz,I want make a matching network in that freq range.My friends tell me that's impossibly.really?any suggesting? Thanks! -cqcq
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