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Thermal loss becomes an issue for narrow-band tunable antennas in fourth generation handsets.
- Source :
-
IET Microwaves, Antennas & Propagation (Wiley-Blackwell) . 2015, Vol. 9 Issue 10, p1015-1020. 6p. - Publication Year :
- 2015
-
Abstract
- Antenna tuning is a very promising technique to cope with the expansion of the mobile communication frequency spectrum. Tunable antennas can address a wide range of operating frequencies, while being highly integrated. In particular, high-Q antennas (also named narrow-band antennas) are very compact, thus are good candidates to be embedded on fourth generation handsets. This study focuses on 'high-Q' tunable antennas and contributes with a characterisation of their loss mechanism, which is a major parameter in link-budget calculations. This study shows, through an example, that the tuner loss is not sufficient to explain the total loss of tunable antennas. It is found that thermal loss -because of the metal conductivity of the antenna itself - plays a major role in the loss mechanism of narrow-band tunable antennas. The investigated high-Q planar inverted F antenna designs exhibit a significant thermal loss; at 1400 MHz nearly 2 dB are lost solely because of the copper conductivity. Thermal loss poses a limitation to achievable performance of tunable antennas and to antenna miniaturisation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17518725
- Volume :
- 9
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IET Microwaves, Antennas & Propagation (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 108357412
- Full Text :
- https://doi.org/10.1049/iet-map.2014.0855