Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Ian T. McMichael"'
Publikováno v:
IEEE Transactions on Antennas and Propagation. 70:7923-7933
Autor:
Ian T. McMichael
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 17:1186-1189
A mechanically reconfigurable patch antenna with polarization diversity is presented. The antenna is composed of a fixed L-probe feed on a bottom substrate layer and a patch with truncated corners on an upper substrate layer that can rotate in azimut
Publikováno v:
Progress In Electromagnetics Research M. 62:131-141
Publikováno v:
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
A four-element annular slot array is presented for applications requiring omnidirectional gain with minimal variation in azimuthal gain and phase. Cavity-backed annular slots are overlapped to form a single compact array aperture. The slot feed struc
Publikováno v:
2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
Global Positioning System (GPS) antennas installed at fixed site infrastructure are susceptible to interference incident along the direction of the horizon. In this paper, a series of quadrifilar helical antennas are presented for the application of
Publikováno v:
IEEE Transactions on Antennas and Propagation. 62:2063-2070
High-impedance surfaces like electromagnetic band gap (EBG) ground planes have been used to realize low profile antennas. In this paper, an alternative ground plane design is presented for antennas with circular current distributions, which consists
Publikováno v:
IEEE Transactions on Antennas and Propagation. 61:2411-2417
An analytical method for determining the optimal reflection phase of an electromagnetic band gap (EBG) ground plane to match a low profile dipole antenna is introduced. Image theory is used to incorporate the near field coupling between a dipole ante
Publikováno v:
2016 IEEE International Symposium on Antennas and Propagation (APSURSI).
A low cost dual-band shorted annular ring patch antenna is presented for the application of GNSS reception with interference rejection at the horizon. It is shown that the antenna can achieve circular polarization with a single feed pin using two shu
Publikováno v:
IGARSS
Electromagnetic band gap (EBG) antennas may be suitable for handheld sensing applications, like ground penetrating radar (GPR) for landmine detection, because of their small size, efficiency, and directivity. Increased detection performance has been
Publikováno v:
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI).
This paper presents a simple realization of a high impedance surface that can be used for low profile antennas with circular current distributions. The surface consists of an annular slot backed by a thin grounded substrate. The annular-slot-loaded g