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Low-impedance transmitter antenna for multi-antenna WCDMA handsets

Sjöblom, Peter LU (2004) IEEE Vehicular Technology Conference, VTC Fall, 2004 In 2004 IEEE 60th Vehicular Technology Conference. VTC2004-Fall (IEEE Cat. No.04CH37575) p.220-224
Abstract
The possibility of building compact, low-ohmic antennas suitable for mobile handsets is investigated. An F-antenna is built with a self-impedance of 10 Ω instead of the commonly used 50 Ω. Low impedance is chosen to minimize voltages in circuits prior to the antenna, in this case an adaptive matching network designed in CMOS or a similar process. To optimize this adaptive matching network, the antenna structure is two-fold: one antenna for transmission and one for reception. A resulting benefit is increased isolation between transmitter and receiver, as shown for a typical case. The 10 Ω antenna has an average efficiency of over 70% and an omnidirectional pattern; isolation increases by distance and reaches about 10dB at 4 cm
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
circuit optimization, CMOS, adaptive matching network, self-impedance, F-antenna, mobile handsets, compact low-ohmic antennas, low-impedance transmitter antenna, multi-antenna WCDMA handsets, transmitting antenna, receiving antenna, isolation, omnidirectional pattern
in
2004 IEEE 60th Vehicular Technology Conference. VTC2004-Fall (IEEE Cat. No.04CH37575)
pages
220 - 224
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Vehicular Technology Conference, VTC Fall, 2004
external identifiers
  • WOS:000227931900046
  • Scopus:17144378989
ISBN
0-7803-8521-7
language
English
LU publication?
yes
id
a65738cb-d120-4ae7-9180-0d6db9ea2c80 (old id 613927)
date added to LUP
2007-12-04 08:51:12
date last changed
2016-10-13 04:44:01
@misc{a65738cb-d120-4ae7-9180-0d6db9ea2c80,
  abstract     = {The possibility of building compact, low-ohmic antennas suitable for mobile handsets is investigated. An F-antenna is built with a self-impedance of 10 Ω instead of the commonly used 50 Ω. Low impedance is chosen to minimize voltages in circuits prior to the antenna, in this case an adaptive matching network designed in CMOS or a similar process. To optimize this adaptive matching network, the antenna structure is two-fold: one antenna for transmission and one for reception. A resulting benefit is increased isolation between transmitter and receiver, as shown for a typical case. The 10 Ω antenna has an average efficiency of over 70% and an omnidirectional pattern; isolation increases by distance and reaches about 10dB at 4 cm},
  author       = {Sjöblom, Peter},
  isbn         = {0-7803-8521-7},
  keyword      = {circuit optimization,CMOS,adaptive matching network,self-impedance,F-antenna,mobile handsets,compact low-ohmic antennas,low-impedance transmitter antenna,multi-antenna WCDMA handsets,transmitting antenna,receiving antenna,isolation,omnidirectional pattern},
  language     = {eng},
  pages        = {220--224},
  publisher    = {ARRAY(0x8246fe8)},
  series       = {2004 IEEE 60th Vehicular Technology Conference. VTC2004-Fall (IEEE Cat. No.04CH37575)},
  title        = {Low-impedance transmitter antenna for multi-antenna WCDMA handsets},
  year         = {2004},
}