TY - JOUR
T1 - Broadband Patch Antenna With a Folded Plate Pair as a Differential Feeding Scheme
AU - Chin, Ching-Hong K.
AU - Xue, Quan
AU - Wong, Hang
PY - 2007/9
Y1 - 2007/9
N2 - A broadband differential-fed patch antenna (DFPA) with good radiation pattern is proposed and studied. Unlike conventional DFPAs, the proposed antenna employs a folded plate pair as the differential feeding scheme. The devised feeding approach subtly acts as an impedance matching media for two radiation modes of the antenna, conducing to the wide impedance bandwidth. The conceived bandwidth enhancement technique demonstrates an impedance bandwidth (SWR ≤ 2) of up to 74% which outperforms conventional broadband patch antennas of more than 20%. Meanwhile, by using a differentially-driven signal along with the introduced feeding scheme, symmetric radiation patterns, low cross-polarization levels and stable radiation patterns are realized within the band. More importantly, the antenna has a stable gain at 8.5 dBi within a wide frequency range, demonstrating the high stability of the radiation characteristics for the two radiation modes. Analysis and parametric studies of the proposed feeding structure are provided.
AB - A broadband differential-fed patch antenna (DFPA) with good radiation pattern is proposed and studied. Unlike conventional DFPAs, the proposed antenna employs a folded plate pair as the differential feeding scheme. The devised feeding approach subtly acts as an impedance matching media for two radiation modes of the antenna, conducing to the wide impedance bandwidth. The conceived bandwidth enhancement technique demonstrates an impedance bandwidth (SWR ≤ 2) of up to 74% which outperforms conventional broadband patch antennas of more than 20%. Meanwhile, by using a differentially-driven signal along with the introduced feeding scheme, symmetric radiation patterns, low cross-polarization levels and stable radiation patterns are realized within the band. More importantly, the antenna has a stable gain at 8.5 dBi within a wide frequency range, demonstrating the high stability of the radiation characteristics for the two radiation modes. Analysis and parametric studies of the proposed feeding structure are provided.
KW - Antenna feeds
KW - Antenna radiation patterns
KW - Bandwidth widening
KW - Cross-polarization
KW - Microstrip patch antenna
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-34548615699&origin=recordpage
U2 - 10.1109/TAP.2007.904118
DO - 10.1109/TAP.2007.904118
M3 - RGC 21 - Publication in refereed journal
SN - 0018-926X
VL - 55
SP - 2461
EP - 2467
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 9
ER -