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Hi,
I'm using IC610 together with MMSIM10 and heard that there is a high performance simulation option such as turbo or APS in the new cadence. However, I couldn't find this menu tab in ADE-L. Is this option available after IC610 or MMSIM10? or do I need and update patch for this? Some of my...
Hi,
Sorry for asking this question again. Because I still have some questions about it.
I'm designing the RX front-end which has single-ended input (@2.4GHz) and differential output (@dc - ~1MHz). Initially, I'm planing to use the instrumentation amplifier as a output buffer for...
Hi,
I have a question about my receiver measurement. I have the receiver front-end (up to the based-band amplifiers) with differential output and I want to characterize it for gain, noise figure, IIP2, IIP3, P1dB. My question is what I should do to connect my circuit with the measuring...
Hi all,
I have a question about simulating the RF circuit. I have the Mixer in series with the baseband amplifier and want to simulate the IIP3 by using cadence spectre RF. My Mixer also has its own driver which is a digital circuit. However, the problem I faced during the simulation is...
I design the mixer for I and Q channel. The RF input is a single-end port but the output has 4 port ( I+ I- Q+ Q-) for quadrature structure. I have a question when simulating the NF. Do I need to combine the output into 1 port for the Noise simulation? I thought that if I compute the noise only...
Hi,
I wonder how analog circuit designers start their design since in the real situation, mos model is not level 1 model. How do analog designers extract level 1 model parameter? I tried to do this one but I have a problem that the value of the Kn' and Kp' are not constant. They vary with...
Hi,
I have a question about the hand calculation and real simulation result in analog design. I use Level 1 model in hand calculation but in the simulation, the simulator uses higher level model (around 49 I quite forget). How big difference between the result from hand analysis and...
You mean I have to write my waveform with touchstone format, right? Is there any way to import or plot a simple text file in ADS? My waveform is very simple : only two columns one is for x axis and the other is y axis. Anyway, thank you so much for your reply.
I have a simple text file I wrote myself. It is a simple waveform. I wonder how to import and plot this waveform file in Agilent ADS. Does anybody have idea about this ?
Thanks in advance.
I have a question about the input impedance of the antenna. Can I use the model for transmission line to analyze the input impedance of the antenna?
Also, what makes antenna different from transmission line?
Thank you.
fasthenry
Hi all,
I am working on RFID system design. currently, I am working on the RF-to-DC converter part. I use cadence for this design but I have a hard time to simulate my system because:
1.It is pretty hard to generate the OOK waveform I want. and
2.It takes a long time to run...
I have designed my digital chip.
I need to test it but it requires 6 data inputs, each is 50 Mbps, 1 Clk signal for 400 MHz and 1 for reset Signal. How can I generate these data input and such a high frequency clock signal? Are there any tool or PC-Card which can help me doing this kind of...
I start learning Verilog for ASIC design. I am confused between "posedge reset" and "reset" when I want to create the D-FF with asynchronous reset. Could anybody explain this for me? I saw some textbooks using "posedge reset" but some using only "reset" in "always" statement to create D-FF...
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