TY - JOUR
T1 - Electrically tunable antenna design procedure for mobile applications
AU - Huang, Libo
AU - Russer, Peter
N1 - Funding Information:
Manuscript received February 21, 2008; revised August 11, 2008. First published November 07, 2008; current version published December 05, 2008. This work was supported by the Ernst von Siemens Foundation. L. Huang is with Continental AG, D-88131 Lindau, Germany (e-mail: libo. [email protected]). P. Russer is with the Technische Universität München, D-80333 Munich, Germany (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TMTT.2008.2006801 Fig. 1. Upper limit of the 7 dB fractional impedance bandwidth dependence on the electrical length of the mobile phone, with the center frequency of the operating band and the length of the mobile phone. The dashed line denotes the fractional bandwidth of DVB-H (470–702 MHz).
PY - 2008/12
Y1 - 2008/12
N2 - Using a high-efficiency tunable antenna to cover a large bandwidth with low return loss is an interesting topic, especially in the case when the physical sizes of the mobile phone and antenna are too small to allow for the coverage of the full band. The limitations of tunable antennas are their losses and the nonlinearity introduced by the tuning devices. A design procedure for the tunable mobile antennas is presented, which accounts for the nonlinearity suppression. Following this procedure, a low-loss tunable Digital Video Broadcasting-Handheld (DVB-H) antenna has been designed and fabricated to cover the DVB-H band (470702 MHz) with a return loss below 7 dB. This antenna exhibits a small volume of only 6 cm3. Despite the high-power signal from the Extended Global System for Mobile communication transmitter on the same printed circuit board and the nonlinear tuning devices, this antenna is highly linear.
AB - Using a high-efficiency tunable antenna to cover a large bandwidth with low return loss is an interesting topic, especially in the case when the physical sizes of the mobile phone and antenna are too small to allow for the coverage of the full band. The limitations of tunable antennas are their losses and the nonlinearity introduced by the tuning devices. A design procedure for the tunable mobile antennas is presented, which accounts for the nonlinearity suppression. Following this procedure, a low-loss tunable Digital Video Broadcasting-Handheld (DVB-H) antenna has been designed and fabricated to cover the DVB-H band (470702 MHz) with a return loss below 7 dB. This antenna exhibits a small volume of only 6 cm3. Despite the high-power signal from the Extended Global System for Mobile communication transmitter on the same printed circuit board and the nonlinear tuning devices, this antenna is highly linear.
KW - Digital video broadcasting-handheld (DVB-H)
KW - Electrically tunable antenna
KW - GSM
KW - Mobile antenna
UR - http://www.scopus.com/inward/record.url?scp=57849088253&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2008.2006801
DO - 10.1109/TMTT.2008.2006801
M3 - Article
AN - SCOPUS:57849088253
SN - 0018-9480
VL - 56
SP - 2789
EP - 2797
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 12
M1 - 4668464
ER -