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How do I find wireless power transfer efficiency in comsol?

Posted 25.09.2019, 14:55 GMT-4 RF & Microwave Engineering, Parameters, Variables, & Functions Version 5.4 3 Replies

Sadman Sakib
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Hello, I have designed a wirelesss power transfer system using loop antenna in comsol multiphysics 5.4 . I have computed the S-parameter but I am having problems finding the efficiency of the system. How can I find the efficiency?

3 Replies Last Post 08.02.2020, 15:57 GMT-5
Robert Koslover Certified Consultant
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Posted: 6 years ago 02.10.2019, 11:03 GMT-4
Updated: 6 years ago 02.10.2019, 07:04 GMT-4

Caveat: I'm assuming that there are no unconventional definitions involved here. Just compute the ratio of the power collected by the receiver to the power radiated by the transmitter. (These quantities usually aren't too hard to find and/or compute.) Note: If losses (in stagest prior to the transmitter or after the receiver, or both) are considered to be part of the efficiency term you are looking for, then be sure to include them also.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Caveat: I'm assuming that there are no unconventional definitions involved here. Just compute the ratio of the power collected by the receiver to the power radiated by the transmitter. (These quantities usually aren't too hard to find and/or compute.) Note: If losses (in stagest prior to the transmitter or after the receiver, or both) are considered to be part of the efficiency term you are looking for, then be sure to include them also.
Sadman Sakib
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Posted: 6 years ago 06.02.2020, 07:08 GMT-5

Hello Sir, How are you doing? You answerded to find the ratio of output power to input power. I have done that but can't find the efficiency on comsol. I have attached two files. Can you please take a look at them and help me with the situation? Thank you in advance.

Hello Sir, How are you doing? You answerded to find the ratio of output power to input power. I have done that but can't find the efficiency on comsol. I have attached two files. Can you please take a look at them and help me with the situation? Thank you in advance.
Robert Koslover Certified Consultant
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Posted: 6 years ago 08.02.2020, 15:57 GMT-5

Create a 1D plot or a table that plots or tabulates the variable you defined. Some of the Comsol-supplied example files show how to create tables and plots of computed results.

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Create a 1D plot or a table that plots or tabulates the variable you defined. Some of the Comsol-supplied example files show how to create tables and plots of computed results.

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