Search:

Type: Posts; User: cyberjok

Page 1 of 2 1 2

Search: Search took 0.01 seconds.

  1. Replies
    0
    Views
    469

    Closed: How to remove cadstar via solder mask ?

    How to remove cadstar via solder mask ?
  2. Replies
    0
    Views
    2,219

    Closed: How to complete change EXE file icon ?

    for a instance as follow shows: the icon changed but open the EXE file the icon DO NOT replaced...
  3. Closed: KEIL + GNU GCC +assembling CMSIS DSP LIB ERROR

    as follow pics shows, how to fix this issue ??? any idea ?
  4. Replies
    4
    Views
    715

    Closed: Re: OPA power supply circuits ,from 34410A

    thx for your input,,,, it looks just a buffer yet, :) :grin:
  5. Replies
    4
    Views
    715

    Closed: Re: OPA power supply circuits ,from 34410A

    https://doc.xdevs.com/doc/HP_Agilent_Keysight/34410A/34410-66521_schematics.pdf

    - - - Updated - - -

    +- 5.4 .... no other purpose ???
  6. Replies
    4
    Views
    715

    Closed: OPA power supply circuits ,from 34410A

    as attach png file shows,,, it looks OPA power supply range extend to -4.7v -- +4.7v..... and it for no other purpose ????
  7. Closed: [moved] ARM some registers are only word accessible...

    ARM some registers are only word accessible...


    struct {
    unsigned x1: 3;
    unsigned x2: 13;
    } x @ 0x0x40090120; //0x40090120 ONLY WORD ACCESSIABLE

    x.x2 = 2; // NOW ARM...
  8. Closed: ADS2016-transistor bias uility ,help me to fix this issue.

    Just try to auto gen a bias for NPN bjt under ADS2016 transistor bias uiltity tool. and got an issue as follow shows, so what's up?

    (bias.ael line 344, column 5) write_datafile() failed
    server...
  9. Replies
    12
    Views
    1,464

    Closed: Re: about OPA circuit. simulate in MC11

    :-D thank you for the explanation.. Just try to use the idea opa to simulate the same circuit ,got the same result that it works on positive feedback,,, --- TINA 9 simulator.

    :bang: it looks...
  10. Replies
    12
    Views
    1,464

    Closed: Re: about OPA circuit. simulate in MC11

    thx,,, I am just curious why that positive feedback OPA still working as negative feedback in MC11 simulator.. :)

    as this simple OPA internal circuit, it looks so easy to know which pin is...
  11. Replies
    12
    Views
    1,464

    Closed: Re: about OPA circuit. simulate in MC11

    MC11 is micro-cap 11, yes the positive feedback will make the OPA be saturated.

    thx for your input.

    - - - Updated - - -



    many thx, Just try the TINA simulate the same circuit, but it...
  12. Replies
    12
    Views
    1,464

    Closed: about OPA circuit. simulate in MC11

    just check the attach file. there are all works fine in MC11 sim software, do u think that is a bug?
  13. Closed: Re: ALTIUM DESIGNER ,HOW TO HIDE SOME COMPONENTS' S overlay

    :-P I have an idea: explode component to free primitives ,and delete them... :-( but that is not a component.... :)
  14. Closed: Re: ALTIUM DESIGNER ,HOW TO HIDE SOME COMPONENTS' S overlay

    Ok, any idea to hide all top overlay of a component ? NOT only NAME / COMMENT ...
  15. Closed: Re: ALTIUM DESIGNER ,HOW TO HIDE SOME COMPONENTS' S overlay

    many thanks to you for your help. :)
  16. Closed: ALTIUM DESIGNER ,HOW TO HIDE SOME COMPONENTS' S overlay

    HELLO Guys ,,,,ALTIUM DESIGNER ,HOW TO HIDE SOME COMPONENTS' S overlay?

    on the top over layer , we just want to show some components top overlay, and hide a few components top overlay , so how...
  17. Closed: Re: about how to do a RFIC + PA matching circuit design.

    I had try this way, LDMOS demo sch (the same bias condition) and change the input matching circuit to CC1120 Zopt load... but I just got about 26dBm,, tune the LDMOS Z load, max about 27dBm. as the...
  18. Closed: Re: about how to do a RFIC + PA matching circuit design.

    you mentioned that you getting 28% eff. how about power? are you getting good power? if yes, the optimum load impedance is for power and not efficiency. take note that optimum load impedance for...
  19. Closed: Re: about how to do a RFIC + PA matching circuit design.

    :-) not sure, but i just use the LDMOS demo sch, and match the input impedance of the LDMOS to RFIC Zopt load (and keep the same LDMOS Z load) (I know now the LDMOS Z load is not Z opt Load)... and i...
  20. Closed: about how to do a RFIC + PA matching circuit design.

    Hello i am have a project that is cc1120 + external pa (29dBm).
    now i have a question about this project: TI do not supply the s parameater of this device. so i dont know the Zout of the PA pin,,,...
  21. Thread:

    by cyberjok
    Replies
    1
    Views
    895

    Closed: Can I get the opt load of a LDMOS ,Only with a s2p file?

    Hello guys, Can I get the opt load of a LDMOS, Only with a s2p?
    I have a new RF PA design, the RF LD MOS manufacturer only offer the s parameter, dont have a nonlinear model. so can i get the opt...
  22. Replies
    8
    Views
    1,172

    [SOLVED]Closed: Re: Saw in out match design

    Thanks for your input, just checked the S2P file, that is Y-Parameters, Not S-parameters

    ------------------------------------
    ! port | pin | signal
    ! -----|-----|--------
    ! 1 | 2 | in
    !...
  23. Replies
    8
    Views
    1,172

    [SOLVED]Closed: Re: Saw in out match design

    Ok, thanks. BigBoss

    just bulit a circuit in ADS ,and want to measure the Zin @869.55MHZ, the result as follow(B3749_WB.7z,is the S2P file):
    114147
    114148

    i think that is wrong. so can i try...
  24. Replies
    8
    Views
    1,172

    [SOLVED]Closed: Re: Saw in out match design

    thanks for your input:
    730ohm || 0.8pF @869.3MHZ Z=65-j208
    http://en.tdk.eu/inf/40/ds/ae/B3749.pdf

    - - - Updated - - -

    YES, but maybe there has something wrong....

    - - - Updated - - -
  25. Replies
    8
    Views
    1,172

    [SOLVED]Closed: Saw in out match design

    Hello, I have a question about EPCOS B3479 in/out match circuit:
    114087
    114088

    the SAW output is 730||0.8pF ??? . just check the recommand match circuit on the b3479 datasheet with SMITCH V3.0...
Results 1 to 25 of 30
Page 1 of 2 1 2