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Publikováno v:
Acta Horticulturae. :1109-1115
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0081ccc6a1a793a9766bec15b9f882b
https://doi.org/10.17660/actahortic.2011.893.127
https://doi.org/10.17660/actahortic.2011.893.127
Autor:
R.C. Hansen, R.E. Collin
Publikováno v:
IEEE Antennas and Propagation Magazine. 51:38-41
The Chu fundamental limitation on Q for electrically small antennas is well known and widely used. However, Chu did not include energy stored inside the hypothetical enveloping sphere. Exact calculation of total stored energy by Thal gives a new Q, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b179b650e90b82384262b38f7df6a404
https://doi.org/10.1109/map.2009.5432037
https://doi.org/10.1109/map.2009.5432037
Autor:
R.C. Hansen
Publikováno v:
IEEE Antennas and Propagation Magazine. 44:24-29
The distribution of phase and delay in corporate-fed phased arrays is examined. RMS phase errors versus scan angle are shown for digital phasers. The phaser bits should all be located at each element. The delayer bits can be also, but delayer loss, d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06ae62a2abaab14d9df6ae353875074b
https://doi.org/10.1109/map.2002.1003631
https://doi.org/10.1109/map.2002.1003631
Autor:
R.C. Hansen
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 1:46-49
A high-impedance conductor with reflection coefficient magnitude near unity and appropriate phase would allow a parallel dipole to be closely spaced to the screen. Phase is critical; this paper examines the pattern, gain, and impedance properties of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2e3baee79504049f2b79fca3131d074
https://doi.org/10.1109/lawp.2002.805121
https://doi.org/10.1109/lawp.2002.805121
Autor:
R.C. Hansen, R.D. Ridgley
Publikováno v:
IEEE Transactions on Antennas and Propagation. 49:1138-1141
Exact vector potential integrals are written in spherical coordinates for the CWTHA. From these the far fields are expressed, both for the CWTHA (dipole field) and for a single winding (loop field). The vector potentials are numerically integrated; t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbe47a51462899e7bb1f371be05e5d32
https://doi.org/10.1109/8.943308
https://doi.org/10.1109/8.943308
Autor:
R.C. Hansen
Publikováno v:
IEEE Antennas and Propagation Magazine. 51:122-124
The limitations of the simple Bode criterion are now obvious, and the results of [3, 5, 6, 7] should no longer be used. Lopez, in Equation (2) has made a significant contribution: a simple formula that gives Fano values with good accuracy over a wide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70b74acfe472c2cfc6362ededbdc37ec
https://doi.org/10.1109/map.2009.5251207
https://doi.org/10.1109/map.2009.5251207
Autor:
R.C. Hansen
Publikováno v:
IEEE Transactions on Antennas and Propagation. 47:549-554
The regular oscillations in scan impedance (normalized by the infinite array values) that occur across a finite array are uniquely altered in two special cases based on computer simulations of finite-by-infinite arrays. First, dipoles with groundplan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c40036dcbde6dffb4f7d962f16e8333b
https://doi.org/10.1109/8.768791
https://doi.org/10.1109/8.768791
Autor:
R.C. Hansen
Publikováno v:
IEEE Transactions on Broadcasting. 44:309-315
Features of horizontally polarized curtain arrays over perfect earth are explicated through consideration of a vertical linear aperture, and a vertical linear array of isotropes. The ideal sinusoidal distribution, and sampled and binary excitations a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f9cd51bac8ca57064c526c86e02ec3
https://doi.org/10.1109/11.715317
https://doi.org/10.1109/11.715317
Publikováno v:
IEEE Microwave and Wireless Components Letters. 15:369-371
Power transfer between circular apertures at far-field distances is calculated using a widely applicable aperture distribution with adjustable sidelobe ratio. Power transfer efficiency is obtained by integrating the pattern out to the angle subtended
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b86abc1dc8c302aa650d96e6713094f
https://doi.org/10.1109/lmwc.2005.847718
https://doi.org/10.1109/lmwc.2005.847718