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Impedance Tuning Unit for DVB-H Front-End

Sjöblom, Peter LU and Sjöland, Henrik LU (2006) SSoCC (Swedish System-on-Chip Conference), 2006 In [Host publication title missing]
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:
author
organization
publishing date
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
in
[Host publication title missing]
pages
4 pages
publisher
SSoCC (Swedish System on Chip Conference)
conference name
SSoCC (Swedish System-on-Chip Conference), 2006
language
English
LU publication?
yes
id
820116e5-9368-4ad7-972f-c9305324d6ae (old id 619894)
date added to LUP
2007-11-30 11:39:03
date last changed
2016-04-16 10:30:09
@misc{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},
  keyword      = {impedance matching,front-end,DVB,CMOS,capacitor bank,switched capacitor,ATU,reconfigurable matching,ITU},
  language     = {eng},
  pages        = {4},
  publisher    = {ARRAY(0x8d16e48)},
  series       = {[Host publication title missing]},
  title        = {Impedance Tuning Unit for DVB-H Front-End},
  year         = {2006},
}