Questions tagged [ads]
Advanced Design System (ADS) is an electronic design automation software system. It provides an integrated design environment to designers of microwave and RF electronic products.
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Auto-generated impedance matching network tool by ADS
I'm a trainee at a research institution, and I'm working on RF design where the goal is to design an amplifier. In RF design there are EDA tools; we are using ADS (Advance Design System). One of the ...
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1answer
38 views
How to Model a Bias Tee in ADS
I'm modeling a Bias Tee in ADS and I wanted to ask how to add board parasitics into the model and what should the results of a good model look like in terms of the S-parameters. This is my first time ...
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43 views
Difficulties simulating transimpedance amplifier
I am developing a transimpedance amplifier as an assignment for a faculty course and I am running into problems when trying to simulate my circuit in ADS Keysight, even though I am quite sure how my ...
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0answers
29 views
Marchand balun layout
For this marchand balun schematics in ADS, how to instruct the ADS layout generator to use coil shape (for area saving in IC) ?
Besides, anyone have any experience with planar layout of marchand ...
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0answers
20 views
How to import a .csv file into ADS?
I'm using ADS2006A version and I'm trying to plot an eye diagram. However, I need to import a .csv file into ADS first because I did the simulation in Matlab. While importing, it asks for pattern ...
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1answer
108 views
Unexpected loadline in ADS simulation
NOTE: This question is related to a homework project.
I’m designing a PA for the 850-880MHz band. We have quite a lot of freedom for doing that. Only two requirements are specified:
The amplifier ...
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1answer
25 views
Microstrip circuit Simulation
How can I simulate the below circuit to show its transmission coefficient?
I have developed the circuit as in the diagram but what is missing to view the transmission coefficient?
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1answer
50 views
Difference between a circuit developed using lumped elements and microstrip elements (transmission line)
As the title implies, what is the difference between lumped elements and microstrip elements? According to my understanding lumped elements are discrete elements but I don't understand what is the ...
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1answer
91 views
Measure impedance of rectifier using harmonic balance in ADS software
I am trying to use harmonic balance to find the impedance of the voltage double rectifier. After finding the impedance, I will use the impedance matching tool to find out the L matching.
As the ...
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28 views
Realizing a prototype filter in ADS or any other simulator
I'm trying to design a stub-filter, and I'm stuck on realizing the filter design using Richard's transformations and Kuroda identities.
I'm building a 5th order Chebyshev LP-filter for 2.6 GHz pass-...
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0answers
24 views
ADS harmonic balance discrepancies with sawtooth waveform
I am using ADS for a simulation where I am biasing a diode with a sawtooth waveform.
The sawtooth source provided by ADS, and 3 harmonics are specified
There are different phase delays across the ...
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1answer
40 views
ADS Simulation: Schematic to find input impedace
I'm following a paper, using ADS, to find the input impedance of a shunt Schottky diode. The paper's schematic is Fig. 1, and my schematic is Fig. 2. The point is that, I could not get the same result ...
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1answer
41 views
Cosimulation Error on Advanced Design System
I want to use BLF2425M9LS140, Power LDMOS transistor, to do cosimulation on ADS. I have got transistor's PCB design from its site and have done required procedure but when I try to convert layout to ...
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1answer
106 views
Double Balanced Mixer - Microstrip Design: Realization
I have a question about the realization of a ring mixer with 2 balun elements in microstrip design:
The problem I see is that either the microstrip lines or the diodes cross each other.
I have found ...
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1answer
199 views
Export Gerber File from Keysight ADS and import in Eagle
Hello,
I want to import my microstrip patch antenna design from ADS into my Eagle-Board-View. Therefore I exported a Gerber-File, which looks good in the Gerber-Viewer. Inside Eagle, i used Gerber-...
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2answers
294 views
How does SPICE calculate Drain current of a MOSFET model?
I am trying to use a MOSFET model for constructing transistor level circuits in ADS. (For instance, an amplifier). I saw that we could import transistor libraries from various locations (https://www....
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1answer
100 views
Difference between conventional Eye-diagram voltage plot and “Eye-density” plot in ADS Keysight Simulation
I know what is eye diagram. It is the sampled voltage plot at the clock frequency (Usually) of my circuit and superimposed. If the logic 0 corresponds ...
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2answers
223 views
What does it mean if eye diagram voltage (0 and 1 level) goes negative?
I have created a differential channel and was testing the channel with simple testbench to check the eye diagram. Now I know the channel performance is very bad (It of several PCB transmission lines, ...
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1answer
20 views
Choosing the right parameters for a Pulse wave simulation in a CAD schematic
I'm trying to choose the right parameters in the simulation in order for the output to show a square wave of gain C1/C2 = 2V
Anyone know what I'm doing wrong? Thanks.
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2answers
192 views
How to create an OOK signal in ADS
I'm trying to make an OOK modulated signal in ADS. I need a random bit generator, and a block to multiply a sinusoidal signal with that random pulse. I did this in Cadence by the 'rand_bit_stream' and ...
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2answers
51 views
Help using Load Pull in ADS
I'd like to ask for some help with performing a Load Pull simulation in ADS. I tried using the DesignGuide utility but am not sure how to connect the Load Pull Instr shown in the attachment and which ...
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1answer
112 views
Question regarding components in Advanced Design System
I am trying to use ADS to create the scheme of an amplifier which includes the following elements
B1:
Description = 100 MHz Short Ferrite Bead, Surface Mount
Part Number = 2743019447
Manufacturer =...
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1answer
199 views
Adding ripple to a voltage signal in ADS
I'm simulating an FMCW radar in ADS and to control the VCO I use a ramp generator. I tried the ideal case, now I want to add a ripple to my ramp voltage so I can analyze the effect of a ramp voltage ...
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2answers
331 views
load pull in ads
I am trying to do a load pull simulation using ADS for push pull FET power amplifier .
First I used the ADS one tone palette to simulate one of the FET's:
Then I found the optimum input and output ...
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1answer
120 views
Why does my ADS simulation provide no gain?
I am utilizing the following spice model for a BS170 MOSFET:
*
*Zetex BS170P Spice Model v1.1 Last Revised 3/5/00
*
.SUBCKT BS170P 3 4 5
D G S
M1 3 2 5 5 N3306M
...
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1answer
249 views
What exactly are terms in ADS? [closed]
I have been using them to simulate my s-parameter tests, but I'm not sure what they are exactly. Are they simply some impedance that simulates an infinite transmission line?
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1answer
97 views
Different isolation when switching port calibration type
I have designed a directional coupler in ADS, and when simulating it in Momentum, I realized that depending the type of port calibration (checked on Calibration TML and Calibration None) the isolation ...
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0answers
265 views
How can I create a varicap in ADS?
I need to create a varying capacitor, so I'm trying to make a varicap in ADS. However, there are only diodes, and I don't know how to make a varicap. Can you point me to some resources or walk me ...
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0answers
92 views
In ADS, why am I getting such a strange output when sweeping a variable and graphing it?
I am trying to get the gain of this circuit vs. capacitance. Here is a screenshot of my circuit and results.
Why is the result behaving like this? It should just be one line. Why are there so many ...
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1answer
590 views
In ADS, how do I vary capacitance values of a capacitor in my circuit and plot the transfer?
I want to see how the transfer function behaves as the value of a capacitor changes.
I've currently set up some s-parameters and a parameter sweep, but I'm not quite sure how to get it to work. Am I ...
-1
votes
1answer
729 views
In ADS, what's the difference between a Parameter Sweep and Sweep Plan?
I want to plot the transfer function/scattering parameter of a circuit with a varying capacitance.
Which one would I use, and what are their differences?
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1answer
81 views
In ADS, what are the differences between the lumped components and the lumped component models?
I'm trying to put in some ideal inductors and capacitors into my schematic, but there are two options: "Inductor" and "Inductor Model".
What are the differences between the two?
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2answers
584 views
What is a reference frequency for electrical length?
There is an option for the transmission lines in ADS which says "Reference Frequency for Electrical Length"
What is that supposed to be? In the transmission line equations, I don't know of any ...
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1answer
409 views
In ADS, how can I change the electrical length on a transmission line to depend on the frequency sweep?
I'm setting up an S-Parameter test on a transmission line, but I want the electrical length to change and depend on the frequency. How can I go about that? The variables that I can put in are all ...
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1answer
2k views
How can I set up a transmission line in ADS?
I'm in the palette section with TLines-Ideal. I'm confused about what all these options mean, for example "terminal transmission line" Where is the part for me to draw the transmission line and ...
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1answer
76 views
Harmonic simulation of microwave power amplifiers
I am working on microwave power amplifier design for 2.45 GHz, 300 W using LDMOS (part no.:MHT1004N). I am using Agilent's ADS for the simulations. I want to know what exactly is harmonic balance ...
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1answer
163 views
Grounded Coplanar - Impedence calculation of microstrip - Advance Design System software (ADS)
I want to calculate the impedance of the micro-strip using Advance design system (ADS) software. I cannot locate "GROUNDED CO-PLANAR" or anything like that. I am new to this software. Can anybody help?...
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1answer
273 views
How to extract ADS marker information to matlab?
I am new to ADS software and I want to extract marker values to MATLAB.
Is there any efficient way to do that? For example,
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1answer
233 views
Keysight's Advanced Design System users, what's wrong with this simulation - II [duplicate]
As requested, I am forking a question as continuity to my previous inquiry from:
Keysight's Advanced Design System users, what's wrong with this simulation?
As such, this is not a duplicate. ...
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1answer
326 views
Keysight's Advanced Design System users, what's wrong with this simulation?
For those of you that uses Advanced Design System (ADS), from this circuit:
Fundamental Frequency for transient simulation tool is set to 1GHz.
Yet, I'm getting this output:
Main question:
Since ...
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1answer
435 views
How to do theoretical calculation of S parameters
I created a test bench for bond wire in ADS EM simulator and got the following graph in the picture I attached. I'm trying to compare the values which I got in ADS with theoretical one. But I'm ...
2
votes
1answer
635 views
Wideband impedance matching to an LNA with varying impedance over frequency
What's the general design procedure for trying to do a wideband impedance match to a device (in this case an LNA) which has very frequency-dependent impedance?
As a personal project, I'm trying to ...
