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I am simulating a block beta modulator, but the problem is to switch uses in that block. What component do I have to use in place of U3? I did not find this type of any component in LTspice library and also also given any help about this circuit in reference articles.

this is circuit diagram of beta modulator block

Image source: Monani, Ravi; Rogers, Brian; Rezaei, Amin; and Hedayatipour, Ava. Implementation of Chaotic Encryption Architecture on FPGA for On-Chip Secure Communication. IEEE Green Energy and Systems Conference IGESC. https://par.nsf.gov/biblio/10437437

SamGibson
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Usha Kumari
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  • Usha Kumari - Hi, Please remember the site rule which requires that when a post includes content (e.g. text, image, photo etc.) copied or adapted from elsewhere, that content must be correctly referenced. As a minimum, for online material the source webpage or PDF etc. should be linked (see that rule regarding references for books / articles etc.). In order to help you, I found what I believe to be the source citation and link & added it. For the future, please remember it's your responsibility to do that :) Thanks. – SamGibson Sep 21 '23 at 02:44
  • I don't understand the image. It has no inverting amplifiers, no summing amplifier, and the amplifiers that are shown have fixed gains. That is 0 for 3. Is that the correct image for the description? – AnalogKid Sep 21 '23 at 17:34

1 Answers1

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You are looking for a SPDT (single pole, double throw) switch. There is an excellent answer by jonk about how to make a SPDT switch in LTspice: SPDT in LTspice

There are also some Analog provided components that will model a switch. Below is one such example for a SPDT switch. enter image description here

Yet Another Michael
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