Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Jeffrey Chalas"'
Publikováno v:
IEEE Transactions on Antennas and Propagation. 64:2637-2647
In this paper, we present an efficient and direct method for computing the lower bound on $Q$ for arbitrary-shaped, perfectly conducting antenna geometries. We begin by deriving a new formula for $Q$ based on the currents induced on the antenna/scatt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24f77705c1eb2d98a94d55d4c305b496
https://doi.org/10.1109/tap.2016.2557844
https://doi.org/10.1109/tap.2016.2557844
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c20f5e5410dc2170e1447eda4744a63d
https://doi.org/10.1109/apusncursinrsm.2018.8609419
https://doi.org/10.1109/apusncursinrsm.2018.8609419
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).
Characteristic modes are used to design a multi-antenna NVIS system on-board an electrically small UAV. By analyzing the radiation eigenmodes of the UAV platform, optimal NVIS patterns are constructed, and mounting locations which maximize desirable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::542a93af0b0286855728c9438b633781
https://doi.org/10.1109/aps.2014.6905041
https://doi.org/10.1109/aps.2014.6905041
Publikováno v:
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI).
The design of in-situ antennas is conducted using the theory of characteristic modes. By performing a characteristic mode analysis of the supporting platform, the optimal spatial regions of antenna-platform coupling can be located, as well as approxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5228c63569797e24410513a4c402b34
https://doi.org/10.1109/aps.2013.6711413
https://doi.org/10.1109/aps.2013.6711413
Autor:
Jeffrey Chalas, Kubilay Sertel
Publikováno v:
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation.
We present a new approach for efficiently computing in-situ performance of platform-mounted antennas. When the antenna-platform system is characterized by the electric field integral equation (EFIE), the moment method (MoM) can be used to analyze the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15227cd73183a1dfbe3525127feaea26
https://doi.org/10.1109/aps.2012.6348564
https://doi.org/10.1109/aps.2012.6348564
Publikováno v:
2012 6th European Conference on Antennas and Propagation (EUCAP).
A robust and efficient method is presented for computing the Q limits of arbitrary shape electrically small antennas (ESAs). These limits are based on the theory of characteristic modes (CMs). In contrast to previous techniques, the CM method does no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::571a84a36b2a4c2fe81a5272b7e49d41
https://doi.org/10.1109/eucap.2012.6206608
https://doi.org/10.1109/eucap.2012.6206608
Publikováno v:
2011 IEEE International Symposium on Antennas and Propagation (APSURSI).
Fundamental limits on the Q-factor for arbitrary-shaped PEC antennas are presented using the theory of characteristic modes. A formula for computing the Q of an arbitrary-shaped PEC antenna with an impressed current mode is derived, and is used to fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d380c9f02bc4cb845d59e83ac24657f
https://doi.org/10.1109/aps.2011.5996827
https://doi.org/10.1109/aps.2011.5996827