Frequency reconfigurable circularly polarized slot antennas with wide tuning range

Tsung Yu Lee, Jeen Sheen Row

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Frequency tunable annular-ring slot antennas with circularly polarization (CP) operation are studied in this article. The annular-ring slot antenna operates at one full-wavelength resonant mode and it is excited by an L-shaped coupling strip with a reactive loading. It is found that the operating frequency of the slot antenna can be tuned by varying the capacitance values of four capacitors, which are symmetrically placed along the circumference of the ring slot. Moreover, for each operating frequency in the tunable range, good CP performance can be obtained as long as the reactance of the loading is properly adjusted. Both measured and simulated results indicate the CP operating frequency of the proposed design can be tuned between 1.58 and 2.59 GHz. A prototype integrating with two varactor diodes is also implemented so that the CP operating frequency can be switched by controlling dc biases. Details of the antenna designs and measured results are presented and discussed.

Original languageEnglish
Pages (from-to)1501-1505
Number of pages5
JournalMicrowave and Optical Technology Letters
Volume53
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

Fingerprint

slot antennas
Slot antennas
Tuning
tuning
Polarization
polarization
rings
Varactors
reactance
antenna design
varactor diodes
circumferences
Diodes
Capacitors
Capacitance
slots
Antennas
strip
capacitors
Wavelength

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Frequency reconfigurable circularly polarized slot antennas with wide tuning range. / Lee, Tsung Yu; Row, Jeen Sheen.

In: Microwave and Optical Technology Letters, Vol. 53, No. 7, 01.07.2011, p. 1501-1505.

Research output: Contribution to journalArticle

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