102 Threads found on edaboard.com: Multiplier Simulation
I am designing a 2 quadrant multiplier and 4 quadrant multiplier (simulation purpose)based on translinear operation..could someone help me out with what is the difference between a 2 and 4 quadrant multiplier and how to apply it on translinear circuits?
Analog IC Design and Layout :: 18.06.2010 01:14 :: MamathaE :: Replies: 0 :: Views: 447
I want to design a 1GHz×5 SRD frequency multiplier use Agilent ADS.
For a fresh guy, I don't know which simulation should I use (Harmonic Balance or Transient?) and which diode is better for my design? (ma44769 or HSMP3822? Somebody suggest 3822 for it's cheaper)
What's more, the diode model is needed. Someone gave an address in this f
RF, Microwave, Antennas and Optics :: 18.06.2010 05:05 :: towzid :: Replies: 0 :: Views: 904
i need floating point multiplier VHDL code. if possible for 8,16 and 32 bit.
PLD, SPLD, GAL, CPLD, FPGA Design :: 13.03.2012 08:47 :: mohamad.momeny :: Replies: 8 :: Views: 1359
I do not know what is useable in Hspice but in most spice you be limited to a nonlinear cap. So the control voltage is the cap voltage themselve. I think you have to use an analog behaviour with an integration function and a multiplier or a function for the integration time constant.
Analog Circuit Design :: 29.03.2004 02:45 :: rfsystem :: Replies: 12 :: Views: 1597
Hello all, I am new to RF design and I am in need of some help. VSWR helped me do an amplifier design in Genesys but what I what to do now is make a multiplier. The overview is:
Osc running at 25mhz > buffered > Filter/match to 50mhz harmonic > Buffer x2.
I managed to do the amplifier opt/simulation with the help of VSWR, but I am unclea
RF, Microwave, Antennas and Optics :: 30.05.2004 07:54 :: VT1 :: Replies: 3 :: Views: 949
I am trying to simulate a Phase Locked Loop in spice. I have created all the nodes and placed all the transistor, resister, etc. into the simulator. I am using the same setup as what is found on the spec sheet of the LM565 (pg 7 - top). I also don't have the multiplier in the cct. So pin 4 and 5 are shorted together, just to see if it works.
ASIC Design Methodologies and Tools (Digital) :: 29.11.2004 01:10 :: akbar24 :: Replies: 0 :: Views: 718
I have a model. The Model is shown in the following link below.
It has an
1) 8-bit Adder
2) a Verilog-A Module
3) Some VPWLF Sources which take "files" as inputs.
1) I have to simulate it for 8, 12 and 16 bit adders.
Analog IC Design and Layout :: 10.05.2005 17:04 :: kamesh419 :: Replies: 1 :: Views: 1046
You can simulate a frequency multiplier (e.g. frequency doubler) nonlinear behaviour using harmonic balance simulation. Most microwave simulation and analysis programs, such as Agilent Advanced Design System (ADS), Appwave's Microwave Office (MWO) and Eagleware's Genesys has this feature.
I have designed a multiplier (...)
RF, Microwave, Antennas and Optics :: 26.05.2005 18:54 :: VSWR :: Replies: 3 :: Views: 1343
You still need the book "Computer-Aided Design of Step Recovery Diode Frequency multipliers" ?
RF, Microwave, Antennas and Optics :: 11.07.2006 08:03 :: gorilla_13 :: Replies: 7 :: Views: 4042
Well, a mixer and multiplier are of same type of architecture. The function realized by a multiplier and the mixer are the same.
So, you must be using Spectre for simulation which is fine. Usually people use single quadrant gilbert cell type.
Analog Circuit Design :: 23.03.2006 02:04 :: Vamsi Mocherla :: Replies: 3 :: Views: 838
I want to use(m) multiplier of bjt to optimise our design flow.
but netlist file of schematic don't include m(only have area item)
for MOSFET is ok, who can tell me how to set it.
Analog IC Design and Layout :: 01.08.2006 01:21 :: rehty :: Replies: 7 :: Views: 1108
Does anyone know how to implement a 2x clock multiplier in digital logic. I.e frequency of 1kHz to 2kHz?
Electronic Elementary Questions :: 22.05.2007 11:25 :: zhiling0229 :: Replies: 17 :: Views: 8961
i have a oscillator followed by frequency multiplier, i wanted to know the phase noise chaterstics at output of frequency multiplier.
i use cadence for simulation of my circuit,
problem is chosing the oscillator i am getting diffrent Phase noise charaterstic when i choose 1)oscillator as oscillator
Analog Circuit Design :: 26.09.2007 17:21 :: pll_boy :: Replies: 5 :: Views: 2061
The simulation is no relation with process,because you have already known the substrate PNP can be done in the CMOS process.marth the is ok!
Analog IC Design and Layout :: 28.11.2007 07:58 :: semitony :: Replies: 3 :: Views: 833
do anyone have sample of the ADS simulated frequency multiplier file? I would like to study some method on how to draw a frequency doubler schematic on the ADS.
RF, Microwave, Antennas and Optics :: 12.11.2007 04:03 :: t_tuaki :: Replies: 21 :: Views: 2330
Can anyone show me how to setup the simulation in AWR for a BJT frequency multiplier? I am using an Active biasing network also.
RF, Microwave, Antennas and Optics :: 28.02.2008 09:56 :: kosolson2005 :: Replies: 3 :: Views: 1189
i m designing 4 quadrent analog multiplier. there r four ip terminal in my strecture.
i m giving V1+v1, V1-v1, V2+v2, V2-v2, signal at the input terninals, where V is D.C. bias and v is analog signal. i m gettin correct out put.but i dont know how can i do a.c. analisis of the circuit. i mean apply same ac signal at all the terminal with some
Analog Circuit Design :: 17.03.2008 04:58 :: mohdiliyasmalik :: Replies: 1 :: Views: 702
Scaling is controlled by the element parameters AREA, AREAB, AREAC, and M. The AREA parameter, the normalized emitter area, divides all resistors and multiplies all currents and capacitors. AREAB and AREAC scale the size of the base area and collector area. Either AREAB or AREAC is used for scaling, depending on whether vertical or lat
Analog IC Design and Layout :: 15.11.2008 11:29 :: diemilio :: Replies: 1 :: Views: 786
This paper is implemented using a W/L of 10/30 and now we are trying
to implement it using 0.5 um AMI technology. What least value we can
assign to W/L..? Please help...
Analog IC Design and Layout :: 21.03.2009 12:18 :: sam244 :: Replies: 1 :: Views: 1709
I am going to design a W-band frequency tripler using the package ADS, in order to get better efficiency, the source impedance should conjugate match the input impedance of varactor diode, and the load impedance shoule conjugate match the output impedance of varactor diode. But I dont't know how to conduct the conjugate match. When I optimized the
RF, Microwave, Antennas and Optics :: 15.11.2009 08:06 :: sonofsky :: Replies: 1 :: Views: 613
Hi. I generated 1 sine wave (24bit output). In order to control the amplitude, the output multiply with a ratio(fixed point multiplier). for fix point multiplication,
sin //zero pad
Asin <= result
After the simulation, i realised that the THD+N is 74(-80db to
PLD, SPLD, GAL, CPLD, FPGA Design :: 16.12.2009 08:59 :: jasonkee111 :: Replies: 0 :: Views: 487
Yes, pspice is suitable for timing simulation as it has a transient simulation option where you get results versus time. It solves the time domain equations that belongs to your circuit components.
For your special case, if you can convert what you want to a combination of circuit components and equations, you can do it. Pspice also e
ASIC Design Methodologies and Tools (Digital) :: 04.05.2010 10:08 :: WimRFP :: Replies: 1 :: Views: 477
i have written a code to run the multiplier MULT18X18 placed in the libraries of virtex 2. When i simulate the multiplier in modelsim i dont the output. there is always an unknown value shown at the output. i have generated a 1 us clock in the test bench. when synthsized there is a warning that appears at that time "The block MULT18x18 is a
PLD, SPLD, GAL, CPLD, FPGA Design :: 09.08.2010 05:59 :: usamaaslam1 :: Replies: 6 :: Views: 870
What multiplier topology did you use? Could you upload an image of your circuit? Could you also upload your simulation results?
Analog IC Design and Layout :: 20.09.2010 06:17 :: Phoibus :: Replies: 2 :: Views: 387
Currently i am using Proteus 7.4SP3 to simulate the AD633 multiplier. The two input is a trend of pulses and i want to get the output. The problem is that it occur 2 warnings which is then stopped my simulation.
1. DELMIN increased to 1.11022e-016 due to lack of time precision
2. TRAN: Timestep too small; timestep = 0: tr
Analog IC Design and Layout :: 02.10.2010 07:50 :: syee10 :: Replies: 0 :: Views: 638
i want to design a multiplier with the function of VOUT=K*(Vcomp-2)*Vin,in which Vcomp and Vin are two terminals of the multiplier.
could anyone help me with the simulation of K when Vcomp equals to 3 and Vin equals to 1?
Analog Circuit Design :: 09.12.2010 03:48 :: liucheng311 :: Replies: 5 :: Views: 366
thanks for your reply,but i have initialized the registers,and its just a multiplier,it does not have multiple drivers
can you try initializing all registers before you start the simulation run. Basically make sure all flip-flops have some valid value (0 or 1 NOT x) at the beginning of simulation.
The x can also appear
ASIC Design Methodologies and Tools (Digital) :: 22.12.2010 00:25 :: yushionly :: Replies: 7 :: Views: 591
i have to design gilbert multiplier ckt using mos and cmos structure.
plz tell me hw will we design cascading of this ckt in spice code mixedmode simulation.and dc simulation i am doing work on silvaco plz tell me solution of this problem.
Analog IC Design and Layout :: 24.01.2011 10:35 :: bhartisharma :: Replies: 0 :: Views: 484
Hi, i am trying to implement a Booth multiplier in VHDL using ISE Webpack. I use a Nexys 2 500 board. This is my first project using VHDL (and FPGA in general) so there are some issues that i still do not understand.
First, i completed the project and simulated it. It worked and all went fine.
Then i tried to generate the programming file to mou
PLD, SPLD, GAL, CPLD, FPGA Design :: 13.02.2011 20:26 :: Sniesk :: Replies: 5 :: Views: 644
Hi , can you tell me why im getting UUUUUUUU for first value of product...and it seems like all the values of product are shifted right..... is it something to do with the clock? ive attached to testbench coding and simulation. THanks! :D
PLD, SPLD, GAL, CPLD, FPGA Design :: 20.04.2011 20:59 :: Jasper12 :: Replies: 1 :: Views: 855
Basically an all-digital PLL (ADPLL) can be a solution to your problem.
You didn't mention the intended output waveform of the PLL. In power electronic applications, a 50/60 Hz PLL with quadrature sine output is a common building block. It can be implemented with a NCO, phase detector (multiplier with averager/integrator) and a PI controller. I
PLD, SPLD, GAL, CPLD, FPGA Design :: 05.10.2011 13:59 :: FvM :: Replies: 10 :: Views: 1416
The multiplier implements y = x*y and you set x or y to zero, what do you expect?
If AC analysis should make sense at all, you have to set the other input to a constant DC level.
Analog IC Design and Layout :: 11.10.2011 11:12 :: FvM :: Replies: 2 :: Views: 556
I'm Designing a CMOS Four Quadrant Miltiplier using bias feedback techniques, the schematic for which is attached.
I'm using Tanner for simulation. Also, i'm following 0.5 microns technology.
The specifications for the transistors are as follow:
* SPICE netlist written by S-Edit Win32 7.00
* Written on Nov 19, 2011 at 13:4
Analog Circuit Design :: 19.11.2011 03:15 :: hsuri :: Replies: 0 :: Views: 270
i designed a 4 x 4 array multiplier in DSCH2.6 and verified the functionality and its working properly. A verilog code is also generated. A layout is also generated using Microwind2.6. While doing layout simulation i am getting a message stating that "access violation at address 004910B7 in module 'Microwind2.exe'." Can any one please help m
Analog IC Design and Layout :: 13.12.2011 13:25 :: A. Srinu :: Replies: 0 :: Views: 1420
i was trying to implement a clock multiplier by introducing a delay to one of the inputs to the xor gate here is my code
module clkmul( clk,A,B,C);
A <= #2 ~clk ;
assign B = #1 clk ; //v9
assign C = A ^ B; // c is ouput clock
will this logic work t
ASIC Design Methodologies and Tools (Digital) :: 29.12.2011 20:18 :: satishbabub :: Replies: 4 :: Views: 1023
I am doing my final year M.E project....For that i have drawn a 4x4 wallace tree multiplier and simulated using microwind 3.1. I have got a correct output in Schematic simulation in DSCH2.But, When i create a verilog file for that and Compile in Microwind 3.1 and create a layout, in the layout simulation, I am not able to view the correct (...)
ASIC Design Methodologies and Tools (Digital) :: 06.02.2012 02:08 :: email@example.com :: Replies: 0 :: Views: 662
I am presently designing tree multiplier using spice.i want to analyze the power of the circuit can anyone help me to provide some test setup or how to analyze the power of the circuit using spice.
Analog IC Design and Layout :: 02.07.2012 05:33 :: something11 :: Replies: 1 :: Views: 306
I am experiencing problem in hardware co-simulation in spartan 3e board. I am designing a system that requires two consecutive multipliers.
for single multiplier the system works fine. however, when both multipliers are there, during generation of JTAG block, towards the end of XFLOW it shows an error, (...)
Digital Signal Processing :: 07.09.2012 22:50 :: sudiitr :: Replies: 0 :: Views: 302
Please I need Good simulation program to test hardware implementation for QPSK modulator and demodulator ,,,,,,,, I used Circuitmaker and it gives errors ??!!! ,,,,,,,,,, and multisim does not have MC1496 as all Suggestions around the world worked as multiplier ????
Thank you for any help
Digital communication :: 29.10.2012 16:58 :: rawanayyoub :: Replies: 0 :: Views: 308
hi im trying to make a mmultilier of 4 bit by 4 bit here under is my code however i have some problems as its not working. it diviide the program in two clock cycles by the state however the program is not changing any type of help is reallyy appreciated thanks
PLD, SPLD, GAL, CPLD, FPGA Design :: 13.11.2012 05:37 :: vhdl34 :: Replies: 5 :: Views: 2420
Thinking would help, there's a hierarchy of both parameters. You'll decide first about driver current and then about Vbe circuit dimensioning.
I am a novice here mate. I really need a worked example to get my bearings so to speak.
I have since found this web site containing a specific example: www.jopdesign.
Hobby Circuits and Small Projects Problems :: 17.11.2012 12:20 :: boylesg :: Replies: 5 :: Views: 1228
What is your used a technique for designed rectifier ?
u mean the rectifier type..? it is villard voltage multiplier. i copy the circuit directly from a paper but didnot get at least the approximate value for the output
RF, Microwave, Antennas and Optics :: 13.02.2013 03:51 :: ecah2011 :: Replies: 3 :: Views: 509
That would prevent a latch from forming, but it does put a mux on the multiplier output which may be unnecessary.
I dont understand quite why you need to "start" and "stop" the multiplier. Your design appears to just multiply two numbers. You could quite easily see these values on a simulation. You know when data is valid as the (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 07.03.2013 05:19 :: TrickyDicky :: Replies: 8 :: Views: 451
I was trying to figure out this circuit but could not figure out its operation.
I had done a simple simulation, it seemed to work as per intention, i.e. a DC voltage doubler/multiplier?..
Can somebody help me understand how it works and its circuit tradeoffs.
BTW - this is not the typical flying capacitor/switching diodes circuit. its only
Analog Circuit Design :: 08.05.2013 21:34 :: faisal78 :: Replies: 5 :: Views: 459
I was thinking of designing a 32 bit alu with vhdl.. I have coded with functionalites add,sub,and,or,etc....(no multiplication and divsion)..
My doubt is i just wrote
when 001-> c<- a and b;
is it this much easy to design an alu.. or I am doing something wrong ..
also How would
ASIC Design Methodologies and Tools (Digital) :: 22.12.2002 07:09 :: eda_wiz :: Replies: 6 :: Views: 4317
I am trying to do power estimation on a fairly complex design using Synopsys Power Compiler. So far I only set switching activities by hand. If I, e.g., set the switching activities for the inputs of a multiplier, will the power compiler estimate correct switching avtivities for all internal nets of the multiplier?
If yes, how complex can
ASIC Design Methodologies and Tools (Digital) :: 23.02.2004 11:08 :: miho :: Replies: 2 :: Views: 1219
I have read some information about LUT in FPGA, but I wonder that How to use LUT in Verilog program for Altera chip.
Anybody can load a simple program use LUT by verilog for me and compare the perfomance with the program without using LUT ? I am confusing about LUT
definition and can not make it clearly.
In addition, I try to design a fast
PLD, SPLD, GAL, CPLD, FPGA Design :: 14.11.2004 22:59 :: hoangthanhtung :: Replies: 3 :: Views: 2285
This is code to implement FIR by Verilog for FPGA.
I have simulated it by Quartus 4.0 and find that the result is not corrected in the first cycle but corrected in the second cycle. I can not explain what reason ?
I attach my simulation file and mark the error for two cycles .
Anybody can help me ?
PLD, SPLD, GAL, CPLD, FPGA Design :: 21.12.2004 03:05 :: hoangthanhtung :: Replies: 2 :: Views: 750
I assume the Xilinx tools will be marginally better, but that doesn't mean the Lattice tools are bad. They use Leonardo (migrating to PrecisionRTL) and Synplicity for synthesis, and Modelsim for simulation. At the back and the floorplanner and P&R is probably similar as Xilinx's.
With regards to the hardware, I assume it is debatable wether EC/ECP
PLD, SPLD, GAL, CPLD, FPGA Design :: 14.01.2005 02:55 :: lucbra :: Replies: 1 :: Views: 1431
1.GO FOR SOME STANDARD CELL BASED CARRY SAVE multiplier ,carry save adder
2.CODING AND DECODING OF A DIGITAL SIGNAL FOR TRANSMISSION VIA MOBILE PHONE
3.analysis of available arithmetic built in self test(ABSIT) schemes and development of a decoder generator for a digital signal processor
4.development of building blocks for a current
ASIC Design Methodologies and Tools (Digital) :: 18.02.2005 06:49 :: ikru26 :: Replies: 3 :: Views: 1844