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Parameter empty when using cds_srr function
Hi, I have a problem in reading the simulation results using Matlab. The problem is that when I am trying to read multiple parameters, the first one i read it correct but after that all parameters...
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Sweeping emitter length at constant current density
Hi For LNA design, how can I sweep the length of the emitter as simulation variable at constant emitter current density ?Aba
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Assura LVS is negelecting shorted/opened device in the schematic
Dear All,We are using a new process. We found that Assura LVS is negelecting shorted/opened device in the schematic. We are using Assura latest version.I saw the compare.cdl file. I saw...
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Rigid branches error in post-layout with RCLK
I have attached layout of the cascode LNA. Left most is LG, top one is LD and bottom one is LS. Whenever I try to move LS and LD away from their place and away from each other, the following error...
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Simulating Phase noise at specific points
Hi All , I am trying to simualte phase noise of a circuit at some specific points. I am using pss+pnoise(add specific points ). I can work with 10 poinst but I need to do it for 500 points (500 points...
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GPS antenna interference in middle of 4 other antennas
Hi all, I hope this is the right forum to ask for help on this. My product is a wireless cellular/wifi device. It has 2 cellular (broadband 700MHz to about 1900MHz) antennas and 2 wifi (2.4GHz to...
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Phase noise simulation
Hi All,I am simulating phase noise of a ring oscillator from 100Hz to 500MHz (pss +pnoise)I am simulating phase noise of a free running oscillator ( Just a ring oscillator and no stimulus to ring...
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Error while running simulation
Hello everyone,I am new to using cadence community forums and I dont know where I can post my following question. While trying to simulate, I keep getting the errors "parameter `n_spec': Unknown...
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Design of low pwer RF Receiver for 433Mhz
Hi,I am trying to design a low pwer RF receiver for 433mHz using the Rf receiver IC PT4317-X from princeton technologies. I am using the values for the components as mentioned in the datasheet. I have...
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Phase Noise Simulations of Frequency Multipliers Using Jitter/Timedomain Noise
Hello All,I have simulated the phase noise of frequency dividers in the past numerous times using the method defined in Chapter 6 of "Predicting the Phase Noise and Jitter of PLL-Based Frequency...
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RF power output stage cross-conduction with complimentary pairs
Hello all, I am posting my first question here trying to appeal to RF experts. I have designed a power amp to deliver around 20W into a 1 Ohm load at 200KHz sine. The amplitude is more or less...
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[Help] Errors exist in initialization of Verilog-A parameter arrays.
Hi,Errors exist in initalizaton of Verilog-A parameter arrays. Source code is as below.
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How to tell PSS to ignore a vpulse source
Dear All,I am doing a PSS/PSP analysis. I am using a vpulse at the supply node. This vpulse is meant for generating a supply step input The step starts at 2us and then sets at the supply voltage in...
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ADE GXL: Global Optimization
Hi,I'm running global optimization in ADE with a fairly large design space. As I understood from the documentation, global optimization does not require a starting point and will search the entire...
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RF electrode active water cooling
Hi,I'm helping colleagues to design a RF (13.56MHz, a few kW) electrode and we argue about the water cooling.In the current design, normal tap water is in direct contact with the electrode, flow in a...
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[Help] Problem on LVS
Hi, I am doing the LVS, and I encounter a problem. Thank you! And the following is the file: Assura (tm) Physical Verification Version av4.1:Production:dfII6.1.3:IC6.1.3.500.10 Release...
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Problem in opening schematic file
Hi,I am trying to open a certain op-amp design in schematic but it is showing warning and is not showing proper blocks of the op-amp may be some file is missing as it says, please tell me where to get...
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Export results of Monte Carlo simulation using cds_srr
Hi, I simulate a VCO in my design and export results to MATLAB using the cds_srr() function. Now, to account for mismatches, I want to run a Monte Carlo simulation (only 1 run). 1) Is there any change...
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Regarding RFlib in cadence 615
Dear Team, I was using cadence 514 and just now switch to cadence615. I have included RFlib from " ../ic5p41/tools/dfII/samples/artist/rfLib " But i can not able to find for cadence 6. Can you please...
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