Memorias de investigación
Research Publications in journals:
Lumped-Element Balun for UHF UWB Printed Balanced Antennas
Year:2008
Research Areas
  • Processing and signal analysis
Information
Abstract
A semi-lumped balun transformer for UHF and ultrawideband (UWB) dipole antennas is presented in this paper. The proposed structure is based on two asymmetric filters that also transform the variable antenna impedance into the desired source impedance. These asymmetric filters make use of a binomial impedance transformer in each filter section. The asymmetric filters (one low pass filter, LPF, and other high pass filter, HPF) allow the balun bandwidth to be increased while the binomial transformer matches the variable balanced dipole impedance. In this way the ripple in the balun response due to the variation of the UWB dipole impedance is reduced. A balun for a UHF and UWB dipole antenna working from 220 to 820 MHz (bandwidth of 4:1) has been achieved with losses lower than 1 dB. These types of baluns are particularly useful in the low microwave frequency band.
International
Si
JCR
Si
Title
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
ISBN
0018-926X
Impact factor JCR
1,636
Impact info
Volume
56
Journal number
5
From page
2002
To page
2007
Month
JULIO
Ranking
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: DIEMAG: Desarrollo e Investigación Electromagnética
  • Departamento: Ingeniería Audiovisual y Comunicaciones