Impedance Tuning Unit for DVB-H Front-End
Sjöblom, Peter LU and Sjöland, Henrik LU
(2006)
SSoCC (Swedish System-on-Chip Conference), 2006
- Abstract
- When implementing low frequency antennas in small devices, e.g., mobile phones using DVB-H, a large mismatch is inevitable. If a impedance tuning unit is introduced reflection losses and noise are reduced while gain is improved. A ITU consisting of 6 switched capacitances and 2 fixed LTCC inductors is studied. Simulations show that since a VSWR = 10 mismatch is reduced to better than VSWR = 2, the ITU increases the power delivered by 2.9 dB to 4.2 dB for an antenna mismatch between VSWR = 4 and VSWR = 8. In the same time, the average noise figure for VSWR = 4 is reduced by 1.4 dB from 4.6 dB to 3.2 dB; and for VSWR = 8 it is reduced by 2.8 dB from 6.4 dB to 3.7 dB. The highest noise figure for VSWR = 8 is reduced by 4.2 dB from 9.1 dB to... (More)
- When implementing low frequency antennas in small devices, e.g., mobile phones using DVB-H, a large mismatch is inevitable. If a impedance tuning unit is introduced reflection losses and noise are reduced while gain is improved. A ITU consisting of 6 switched capacitances and 2 fixed LTCC inductors is studied. Simulations show that since a VSWR = 10 mismatch is reduced to better than VSWR = 2, the ITU increases the power delivered by 2.9 dB to 4.2 dB for an antenna mismatch between VSWR = 4 and VSWR = 8. In the same time, the average noise figure for VSWR = 4 is reduced by 1.4 dB from 4.6 dB to 3.2 dB; and for VSWR = 8 it is reduced by 2.8 dB from 6.4 dB to 3.7 dB. The highest noise figure for VSWR = 8 is reduced by 4.2 dB from 9.1 dB to 4.9 dB. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/619894
- author
- Sjöblom, Peter
LU
and Sjöland, Henrik
LU
- organization
- publishing date
- 2006
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- impedance matching, front-end, DVB, CMOS, capacitor bank, switched capacitor, ATU, reconfigurable matching, ITU
- host publication
- [Host publication title missing]
- pages
- 4 pages
- publisher
- SSoCC (Swedish System on Chip Conference)
- conference name
- SSoCC (Swedish System-on-Chip Conference), 2006
- conference location
- Kålmården, Sweden
- conference dates
- 2006-05-04 - 2006-05-05
- language
- English
- LU publication?
- yes
- id
- 820116e5-9368-4ad7-972f-c9305324d6ae (old id 619894)
- date added to LUP
- 2016-04-04 12:23:15
- date last changed
- 2018-11-21 21:10:39
@inproceedings{820116e5-9368-4ad7-972f-c9305324d6ae,
abstract = {{When implementing low frequency antennas in small devices, e.g., mobile phones using DVB-H, a large mismatch is inevitable. If a impedance tuning unit is introduced reflection losses and noise are reduced while gain is improved. A ITU consisting of 6 switched capacitances and 2 fixed LTCC inductors is studied. Simulations show that since a VSWR = 10 mismatch is reduced to better than VSWR = 2, the ITU increases the power delivered by 2.9 dB to 4.2 dB for an antenna mismatch between VSWR = 4 and VSWR = 8. In the same time, the average noise figure for VSWR = 4 is reduced by 1.4 dB from 4.6 dB to 3.2 dB; and for VSWR = 8 it is reduced by 2.8 dB from 6.4 dB to 3.7 dB. The highest noise figure for VSWR = 8 is reduced by 4.2 dB from 9.1 dB to 4.9 dB.}},
author = {{Sjöblom, Peter and Sjöland, Henrik}},
booktitle = {{[Host publication title missing]}},
keywords = {{impedance matching; front-end; DVB; CMOS; capacitor bank; switched capacitor; ATU; reconfigurable matching; ITU}},
language = {{eng}},
publisher = {{SSoCC (Swedish System on Chip Conference)}},
title = {{Impedance Tuning Unit for DVB-H Front-End}},
year = {{2006}},
}