Search Engine **www.edaboard.com**

## Spectre Input Impedance |

Are you looking for?:

spectre impedance , spectre input , output impedance spectre , spectre psf input

spectre impedance , spectre input , output impedance spectre , spectre psf input

11 Threads found on edaboard.com: **Spectre Input Impedance**

I tried to measure the **input** **impedance** of differential **input** stage of mixer using s2p analysis in Cadence **spectre** RF,
I got same Z11 in following cases
1) When the Port connected deferentially
2) Using AnalogLib ideal_balun
3) Using RFlib balun (with Balanced output **impedance** set to 25 Ohms), (...)

Analog Circuit Design :: 07-07-2014 12:40 :: alokshar22 :: Replies: **0** :: Views: **942**

Hi,
I have to simulate the gain of my designed LNA with certain antenna **impedance** as a source. I am using cadence **spectre** for the simulation.
The problem is that cadence **spectre** provides n1port for importing S11 parameters of antenna, which is a passive port. Therefore, if i connect the n1port at LNA **input** to represent (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 05-10-2012 07:22 :: viperpaki007 :: Replies: **5** :: Views: **1973**

Does any body know how to measure the lc tank quality factor with software(rf **spectre** .i.e cadence) and by calculations too?
is it possible to get 900 ohm **impedance** of an lc tank ?(this lc tank was used for an lna load.)( l=5.49nH , c=651fF).the lna has a dc blocking cap of 2pF value after the tank.
what is the relation between the (...)

Elementary Electronic Questions :: 03-08-2011 06:05 :: victoriya :: Replies: **3** :: Views: **1830**

is output port must be added for IIP3 measurement? if port needed what should be its **impedance**.iam getting different IIP3 results with and without the port and also different results for different port **impedance**s.help me please.................

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 01-29-2011 07:51 :: sureshnaidu :: Replies: **1** :: Views: **565**

is Z-parameter from s-parameter analysis in cadence **spectre** RF will give correct **input** **impedance**.I want to calculate **input** **impedance** of my Low noise amplifier circuit. Whether **input** **impedance** is equal to Z11 parameter.?thanks in advance

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 10-13-2010 11:27 :: sureshnaidu :: Replies: **1** :: Views: **3151**

in **spectre**, maintian the DC **input** level and add a ac current at the output node, run ac simulation and get the ac voltage magnitude of the output node, the output resistance is equal to the ac voltage magnitude devided by the ac current, if the ac current is set to be 1A, then the output resistance will just be equal to the ac magnitude.

Analog Circuit Design :: 07-27-2007 01:18 :: abcyin :: Replies: **3** :: Views: **1050**

Hello all,
I have a single ended 2 GHz amplifier , i am using **spectre** simulations to make S parameter simulations, and using simultanuous **input** output matching technique mentioned in Gonzalez book, my problem now is that the sourse **impedance** is 150 ohm and load **impedance** is 25 ohm, so what is the reference (...)

RF, Microwave, Antennas and Optics :: 02-13-2007 02:48 :: alzomor :: Replies: **0** :: Views: **1172**

I am trying to characterize a 2-port network using **spectre**. Both the **input** and output **impedance**s of this network is supposed to be 200ohm in the frequency band of interest.
So I made two identical instances of this 2-port network. For the first instance, I connect PORT1 to the **input** and PORT2 to the output. For the (...)

RF, Microwave, Antennas and Optics :: 06-30-2006 04:58 :: ezbentley :: Replies: **2** :: Views: **1250**

the balun model in **spectre** (verilog-a) has an unbalanced **input** **impedance** of 50 Ohm and a balanced/differential output **impedance** of 50 Ohm. these **impedance** values can be varied. to my knowledge, if the diffrential output **impedance** is 50 Ohm, each output has an **impedance** of 25 (...)

Analog Circuit Design :: 02-23-2006 17:55 :: estradasphere :: Replies: **0** :: Views: **1360**

I have a question when try to estimate a mixer's NF.
How dose Cadence **spectre** calculate the NF of a mixer?
I mean, if we are designing a mixer with onchip **input** from an LNA, then the **input** **impedance** of the mixer surely won't be 50Ω.
So, when calculate the NF, which needs a value of Rs, dose it use the Zin of the (...)

RF, Microwave, Antennas and Optics :: 02-09-2006 13:17 :: yorande :: Replies: **1** :: Views: **1219**

when design LNA, it is said to size the transistors to match the optimal source **impedance** to get lowest NF. But I don't know which simulation can get the noise **impedance** of the LNA? In most cases, it is not the same with **input** inpedance.
i use cadence ic50, **spectre** and **spectre**RF. does anyone know which (...)

RF, Microwave, Antennas and Optics :: 11-27-2005 15:07 :: hqing :: Replies: **2** :: Views: **1171**

Previous
1
Next

Last searching phrases:

zero appear | less than zero | getting came | wildcard | nevertheless | forth | three five | 67899 | forth | throughout

zero appear | less than zero | getting came | wildcard | nevertheless | forth | three five | 67899 | forth | throughout