Open AccessDifferential grid array antenna to radiate pencil beam at 24 GHz for radar and sensor applications
Author(s) -
Zhang Lin,
Zhang Yue Ping
Publication year - 2014
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0388
Subject(s) - pencil (optics) , optics , antenna gain , bandwidth (computing) , physics , antenna array , impedance matching , radar , attenuation , electrical impedance , antenna (radio) , dipole antenna , electrical engineering , engineering , telecommunications , antenna aperture
A new differential grid array antenna that radiates a pencil beam is reported. The difference between the half‐power beam widths of the E‐ and H ‐planes is used to assess the pencil beam quality. Also, a novel differential feeding scheme that eases the testing and improves the pencil beam quality, impedance matching and gain bandwidth is proposed. The prototype was designed and fabricated on RT/duroid 5880 substrate with the size of 40 × 50 × 0.787 mm 3 and the number of 16 radiating elements. Measured results show that the differential grid array antenna achieved 4.37% impedance bandwidth and 17 dBi gain at 24.25 GHz.