A Wideband, Wide Scanning Tightly Coupled Dipole Array With Integrated Balun (TCDA-IB)

A key challenge in the design of wideband dipole phased arrays is the design of equally wideband baluns which are sufficiently compact to fit within the unit cell (typically in the linear dimension at low frequencies). In this paper, we exploit the reactance of a compact Marchand balun as an impedan...

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Published in	IEEE transactions on antennas and propagation Vol. 61; no. 9; pp. 4538 - 4548
Main Authors	Doane, Jonathan P., Sertel, Kubilay, Volakis, John L.
Format	Journal Article
Language	English
Published	New York, NY IEEE 01.09.2013 Institute of Electrical and Electronics Engineers
Subjects	Antenna arrays Antennas Applied sciences Arrays Bandwidth broadband antennas Exact sciences and technology Feeds Impedance Impedance matching Integrated circuit modeling phased arrays Radiocommunications Substrates Telecommunications Telecommunications and information theory Prototype Cross polarization Dipole antenna arrays Balun Broadband antennas Phased array antenna Low frequency Reactance phased arrays Impedance matching Wide band Simulation Standing wave ratio Antenna array Antenna arrays
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Abstract	A key challenge in the design of wideband dipole phased arrays is the design of equally wideband baluns which are sufficiently compact to fit within the unit cell (typically in the linear dimension at low frequencies). In this paper, we exploit the reactance of a compact Marchand balun as an impedance matching network for each array element. The elimination of bulky external baluns results in a significant reduction of size, weight and cost, while the bandwidth is simultaneously improved by over 30%, compared to standard feeding techniques. In this manner, a tightly coupled dipole array with an integrated balun (TCDA-IB) is developed which achieves 7.35:1 bandwidth (0.68 - 5.0 GHz) while scanning to ±45° in all directions, subject to . In a dual-polarization configuration, the TCDA-IB has low cross polarization of over the majority of the band. Measured results are presented for a prototype 8 × 8 element TCDA-IB, showing good agreement with simulation.
AbstractList	A key challenge in the design of wideband dipole phased arrays is the design of equally wideband baluns which are sufficiently compact to fit within the unit cell (typically in the linear dimension at low frequencies). In this paper, we exploit the reactance of a compact Marchand balun as an impedance matching network for each array element. The elimination of bulky external baluns results in a significant reduction of size, weight and cost, while the bandwidth is simultaneously improved by over 30%, compared to standard feeding techniques. In this manner, a tightly coupled dipole array with an integrated balun (TCDA-IB) is developed which achieves 7.35:1 bandwidth (0.68 - 5.0 GHz) while scanning to ±45° in all directions, subject to . In a dual-polarization configuration, the TCDA-IB has low cross polarization of over the majority of the band. Measured results are presented for a prototype 8 × 8 element TCDA-IB, showing good agreement with simulation.
Author	Doane, Jonathan P. Volakis, John L. Sertel, Kubilay
Author_xml	– sequence: 1 givenname: Jonathan P. surname: Doane fullname: Doane, Jonathan P. email: doane.15@osu.edu organization: ElectroScience Lab., Ohio State Univ., Columbus, OH, USA – sequence: 2 givenname: Kubilay surname: Sertel fullname: Sertel, Kubilay organization: ElectroScience Lab., Ohio State Univ., Columbus, OH, USA – sequence: 3 givenname: John L. surname: Volakis fullname: Volakis, John L. organization: ElectroScience Lab., Ohio State Univ., Columbus, OH, USA
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SubjectTerms	Antenna arrays Antennas Applied sciences Arrays Bandwidth broadband antennas Exact sciences and technology Feeds Impedance Impedance matching Integrated circuit modeling phased arrays Radiocommunications Substrates Telecommunications Telecommunications and information theory
Title	A Wideband, Wide Scanning Tightly Coupled Dipole Array With Integrated Balun (TCDA-IB)
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