Frequency switchable printed Yagi-Uda dipole sub-array for base station antennas

Yong Cai*, Y. Jay Guo, Pei Yuan Qin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

A frequency switchable printed Yagi-Uda dipole sub-array is proposed as an array element for base station antennas. The sub-array consists of four Yagi-Uda dipole elements loaded with PIN diodes. The electrical lengths of the director and driven dipole elements can be changed by controlling the PIN diodes states so that the sub-array can operate in two different frequency bands. The impedance bandwidth (|S 11| ≤ -10 dB) is measured to be 4.9% and 12.9% in the lower (from 2.39 to 2.51 GHz) and higher band (from 3.18 to 3.62 GHz), respectively. The measured gain of the sub-array is 9.2 and 11.9 dBi at 2.44 and 3.4 GHz, respectively. The end-fire fan-beam pattern is obtained across the two operation bands, which makes the antenna element suitable for base station application with frequency reconfigurablity.

Original languageEnglish
Article number6107526
Pages (from-to)1639-1642
Number of pages4
JournalIEEE Transactions on Antennas and Propagation
Volume60
Issue number3
DOIs
Publication statusPublished - Mar 2012
Externally publishedYes

Keywords

  • Base station
  • PIN diode
  • reconfigurable array antenna
  • Yagi-Uda antenna

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