Compact, Frequency-Reconfigurable Filtenna with Sharply Defined Wideband and Continuously Tunable Narrowband States

Ming Chun Tang, Zheng Wen, Hao Wang, Mei Li, Richard W. Ziolkowski

Research output: Research - peer-reviewArticle

Abstract

A compact, frequency-reconfigurable filtenna with sharp out-of-band rejection in both its wideband and continuously tunable narrowband states is presented. It is intended for use in cognitive radio applications. The wideband state is the sensing state and operationally covers 2.35 - 4.98 GHz. The narrow band states are intended to cover communications within the 3.05 GHz to 4.39 GHz range, which completely covers the WiMAX band and the satellite communications C-band. A PIN diode is employed to switch between these wide and narrow band operational states. Two varactor diodes are used to shift the operational frequencies continuously among the narrowband states. The filtenna consists of a funnel-shaped monopole augmented with a reconfigurable filter; it has a compact electrical size: 0.235 λL × 0.392 λL, where the wavelength λL corresponds to the lower bound of its operational frequencies. The measured reflection coefficients, radiation patterns, and realized gains for both operational states are in good agreement with their simulated values.

LanguageEnglish (US)
JournalIEEE Transactions on Antennas and Propagation
DOIs
StateAccepted/In press - Aug 5 2017

Fingerprint

narrowband
broadband
Diodes
Varactors
Communication satellites
Cognitive radio
Switches
Wavelength
Communication
satellite communication
funnels
varactor diodes
C band
monopoles
rejection
switches
communication
diodes
reflectance
filters

Keywords

  • Cognitive radio
  • filtenna
  • frequency-reconfigurable
  • monopole antenna
  • reconfigurable antennas
  • reconfigurable filters

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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title = "Compact, Frequency-Reconfigurable Filtenna with Sharply Defined Wideband and Continuously Tunable Narrowband States",
abstract = "A compact, frequency-reconfigurable filtenna with sharp out-of-band rejection in both its wideband and continuously tunable narrowband states is presented. It is intended for use in cognitive radio applications. The wideband state is the sensing state and operationally covers 2.35 - 4.98 GHz. The narrow band states are intended to cover communications within the 3.05 GHz to 4.39 GHz range, which completely covers the WiMAX band and the satellite communications C-band. A PIN diode is employed to switch between these wide and narrow band operational states. Two varactor diodes are used to shift the operational frequencies continuously among the narrowband states. The filtenna consists of a funnel-shaped monopole augmented with a reconfigurable filter; it has a compact electrical size: 0.235 λL × 0.392 λL, where the wavelength λL corresponds to the lower bound of its operational frequencies. The measured reflection coefficients, radiation patterns, and realized gains for both operational states are in good agreement with their simulated values.",
keywords = "Cognitive radio, filtenna, frequency-reconfigurable, monopole antenna, reconfigurable antennas, reconfigurable filters",
author = "Tang, {Ming Chun} and Zheng Wen and Hao Wang and Mei Li and Ziolkowski, {Richard W.}",
year = "2017",
month = "8",
doi = "10.1109/TAP.2017.2736535",
journal = "IEEE Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Compact, Frequency-Reconfigurable Filtenna with Sharply Defined Wideband and Continuously Tunable Narrowband States

AU - Tang,Ming Chun

AU - Wen,Zheng

AU - Wang,Hao

AU - Li,Mei

AU - Ziolkowski,Richard W.

PY - 2017/8/5

Y1 - 2017/8/5

N2 - A compact, frequency-reconfigurable filtenna with sharp out-of-band rejection in both its wideband and continuously tunable narrowband states is presented. It is intended for use in cognitive radio applications. The wideband state is the sensing state and operationally covers 2.35 - 4.98 GHz. The narrow band states are intended to cover communications within the 3.05 GHz to 4.39 GHz range, which completely covers the WiMAX band and the satellite communications C-band. A PIN diode is employed to switch between these wide and narrow band operational states. Two varactor diodes are used to shift the operational frequencies continuously among the narrowband states. The filtenna consists of a funnel-shaped monopole augmented with a reconfigurable filter; it has a compact electrical size: 0.235 λL × 0.392 λL, where the wavelength λL corresponds to the lower bound of its operational frequencies. The measured reflection coefficients, radiation patterns, and realized gains for both operational states are in good agreement with their simulated values.

AB - A compact, frequency-reconfigurable filtenna with sharp out-of-band rejection in both its wideband and continuously tunable narrowband states is presented. It is intended for use in cognitive radio applications. The wideband state is the sensing state and operationally covers 2.35 - 4.98 GHz. The narrow band states are intended to cover communications within the 3.05 GHz to 4.39 GHz range, which completely covers the WiMAX band and the satellite communications C-band. A PIN diode is employed to switch between these wide and narrow band operational states. Two varactor diodes are used to shift the operational frequencies continuously among the narrowband states. The filtenna consists of a funnel-shaped monopole augmented with a reconfigurable filter; it has a compact electrical size: 0.235 λL × 0.392 λL, where the wavelength λL corresponds to the lower bound of its operational frequencies. The measured reflection coefficients, radiation patterns, and realized gains for both operational states are in good agreement with their simulated values.

KW - Cognitive radio

KW - filtenna

KW - frequency-reconfigurable

KW - monopole antenna

KW - reconfigurable antennas

KW - reconfigurable filters

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