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  1. J

    cadence mixer test bench

    hi anybody can please explain me why this LO signal is given with this arrangement, what is the purpose of VCVS and at IF port also dc port is connected with 50 ohm value and again using VCVS. here is the figure of test bench
  2. J

    how gain remain same in mixer using current bleeding

    hi i have designed mixer using current bleeding. in this method we are decreasing current through LO stage to decrease noise by directly injecting current in to RF stage , but this will also reduce current of load resistor than how gain increases because gain = 2/Pi (gm.RL) please explain...
  3. J

    biasing network for RF system

    hi i have designed RF mixer, for Biasing purpose i have used simple voltage devider arrangement using two PMOS is it Ok? or some biasing network need to be design? image is attached here with, in some literature i have seen Resistance is connected between biasing terminal & gate of MOSFET...
  4. J

    which resistor, capacitor, should be used in RF design

    hi i m designing RF mixer in cadence which resistor, capacitor, inductor etc should be used normal(given in analog lab library) or given in tsmc 0.18 library.
  5. J

    input impedance of mixer in cadence

    hi thank u edaboard members for helping me a lot... i m simulating gilbert mixer for finding its input impedance i tried it using s-parameter in cadence but the test bench i used have a balun at RF port so while measuring Z11, i think it gives input impedance at single ended input of balun but...
  6. J

    mixer gain calculation

    voltage gain of gilbert mixer is of 10dB, it is voltage gain but in some literature they convert it using dB = 10log(gain) rather than using 20log(gain)
  7. J

    mixer isolation value comes negative but papers shows it positive

    hi i have designed down conversion mixer it isolation shows negative results(between -65 to -70) many papers i have seen they consider it as positive means 65db isolation here one paper image link is attached https://obrazki.elektroda.pl/2197191600_1431599923.jpg please help
  8. J

    how to plot spectrum of two tone analysis of mixer in cadence

    hi i m designing mixer for that i need to plot spectrum of two tone analysis(3rd order products).i want to see the 3rd order harmonics with desired signal in frequency domain in cadence spectre please help
  9. J

    how to measure input impedance of gilbert mixer in cadence

    hi i m have designed gilbert mixer now i m trying to find its input impedance. i have used single to differential network (not balun) for Rf and LO port. now how input impedance is measured i m working in cadence spectre. anyone have some idea please reply me.
  10. J

    how to plot iip3 vs gate biasing dc voltage for DS method in cadence

    hi friends i m designing mixer for that i m using DS method to improve iip3 point. in this method i need to see the change in iip3 with dc gate voltage of mosfet. i m using cadence vertuoso and analysis i m doing for iip3 are qpss and qpac please reply
  11. J

    how to design perfect mixer

    hi i m designing RF mixer for 10db using formulas but when i m simulate it in cadence gain is very low and other than for which i designed it is coming around -10db
  12. J

    how to plot gm/Id plot in cadence 5.1.41

    hi i want to plot gm/id plot and using cadence 5.1.41 so please help me for the same
  13. J

    how much current should flow through current helpers in mixer

    hi i m designing mixer and using current helpers to reduce current through switches, so when i apply ac signal , from where this ac current should flow i mean all ac current pass through switch or partly current can flow through switch and helpers.
  14. J

    maximum length that can be used in 180nm technology

    hi i m designing Rf mixer and using tsmc 180nm, so what is the maximum length that can i use. and if i m using more than 180nm , suppose 360nm isn't it would become old design?
  15. J

    how to calculate power dissipation in mixer

    high i m designing RF mixer for Wi-max application how to measure power dissipation and N.F. of mixer in cadence.
  16. J

    requirements for the wimax mixer

    i m designing wimax mixer can anybody tell me which r the design parameters much important for wimax
  17. J

    difference between bw freq band

    what is the difference between channel bandwidth,frequency band & if frequency
  18. J


    why voltage controlled voltage source are used in mixer test bench? dont understanding the test bench for RF mixer in cadence
  19. J

    RF mixer design in cadence

    hi guys i m designing rf mixer for wimax application. anybody can help me about how to design mixer and the equations used for that?

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