Constant Mismatch Loss Boundary Circles and Their Application to Optimum State Distribution in Adaptive Matching Networks
(2014) In IEEE Transactions on Circuits and Systems II: Express Briefs 61(12). p.922-926- Abstract
- An adaptive matching network provides a number of states between which it can be reconfigured. At a certain frequency, the matching network transforms a reference impedance to different impedances for the different states. The circuit will be able to match those impedances perfectly to the reference impedance, and impedances close to those will also be fairly well matched. The matching will, however, decline for impedances further away and eventually become too low. By defining the level of acceptable matching, a boundary can be formed that identifies an area of impedances that are matched well enough. In the same manner, a boundary is possible to form for constant mismatch loss. It is shown that the boundaries are circular if plotted in a... (More)
- An adaptive matching network provides a number of states between which it can be reconfigured. At a certain frequency, the matching network transforms a reference impedance to different impedances for the different states. The circuit will be able to match those impedances perfectly to the reference impedance, and impedances close to those will also be fairly well matched. The matching will, however, decline for impedances further away and eventually become too low. By defining the level of acceptable matching, a boundary can be formed that identifies an area of impedances that are matched well enough. In the same manner, a boundary is possible to form for constant mismatch loss. It is shown that the boundaries are circular if plotted in a Smith chart and that the sizes of the circles depend on the location of $z_{L}$. With these results, it is then investigated how the impedances should be distributed to minimize the number of states while still achieving the matching performance and coverage. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4820723
- author
- Sjöblom, Peter LU and Sjöland, Henrik LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Circuits and Systems II: Express Briefs
- volume
- 61
- issue
- 12
- pages
- 922 - 926
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000345852200003
- scopus:84914669260
- ISSN
- 1549-7747
- DOI
- 10.1109/TCSII.2014.2357137
- project
- EIT_SOS VINNOVA Industrial Excellence Center - System Design on Silicon
- language
- English
- LU publication?
- yes
- id
- f203073d-e2b0-453b-9db8-b6692b55565c (old id 4820723)
- date added to LUP
- 2016-04-01 11:05:08
- date last changed
- 2024-04-17 02:49:12
@article{f203073d-e2b0-453b-9db8-b6692b55565c, abstract = {{An adaptive matching network provides a number of states between which it can be reconfigured. At a certain frequency, the matching network transforms a reference impedance to different impedances for the different states. The circuit will be able to match those impedances perfectly to the reference impedance, and impedances close to those will also be fairly well matched. The matching will, however, decline for impedances further away and eventually become too low. By defining the level of acceptable matching, a boundary can be formed that identifies an area of impedances that are matched well enough. In the same manner, a boundary is possible to form for constant mismatch loss. It is shown that the boundaries are circular if plotted in a Smith chart and that the sizes of the circles depend on the location of $z_{L}$. With these results, it is then investigated how the impedances should be distributed to minimize the number of states while still achieving the matching performance and coverage.}}, author = {{Sjöblom, Peter and Sjöland, Henrik}}, issn = {{1549-7747}}, language = {{eng}}, number = {{12}}, pages = {{922--926}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Circuits and Systems II: Express Briefs}}, title = {{Constant Mismatch Loss Boundary Circles and Their Application to Optimum State Distribution in Adaptive Matching Networks}}, url = {{http://dx.doi.org/10.1109/TCSII.2014.2357137}}, doi = {{10.1109/TCSII.2014.2357137}}, volume = {{61}}, year = {{2014}}, }