about the Balun in cadence
时间：04-10
整理：3721RD
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I would like to ask you guys about the ideal balun component in cadence.
At first, I construct the balun (single to diff end and ratio , N, = 1:1 ) by using inductor and mutual inductor with K=1 and every inductor is 100nH. I use my constructed balun to simulate the mixer with the IF frequency = 20MHz and RF=2.1GHz and compare the result when using the ideal balun. It turns out that the two result are different. After that, I change the value of the inductor from 100nH to 1H and resimulate. Now, the results are the same. What's the problem with the balun I construct?
Furthermore, with my balun ( inductor value =1H), it can not simulate in cadence5033 but it can in cadence5141. If I change the inductor value to 100nH, it can simulate in both cadence version but give the different result from using ideal balun as I described above. Is this the problem caused by cadence itself?
Thanks in advance.
At first, I construct the balun (single to diff end and ratio , N, = 1:1 ) by using inductor and mutual inductor with K=1 and every inductor is 100nH. I use my constructed balun to simulate the mixer with the IF frequency = 20MHz and RF=2.1GHz and compare the result when using the ideal balun. It turns out that the two result are different. After that, I change the value of the inductor from 100nH to 1H and resimulate. Now, the results are the same. What's the problem with the balun I construct?
Furthermore, with my balun ( inductor value =1H), it can not simulate in cadence5033 but it can in cadence5141. If I change the inductor value to 100nH, it can simulate in both cadence version but give the different result from using ideal balun as I described above. Is this the problem caused by cadence itself?
Thanks in advance.