Zobrazeno 1 - 10
of 8 360
pro vyhledávání: '"ka-band"'
Autor:
Shibin Jiang, Wenjun Deng, Zhanshan Wang, Xinbin Cheng, Din Ping Tsai, Yuzhi Shi, Weiming Zhu
Publikováno v:
Opto-Electronic Science, Vol 3, Iss 10, Pp 1-11 (2024)
Design of multiple-feed lens antennas requires multivariate and multi-objective optimization processes, which can be accelerated by PSO algorithms. However, the PSO algorithm often fails to achieve optimal results with limited computation resources s
Externí odkaz:
https://doaj.org/article/6df93411914a46d39f02b322ddca4ad0
Publikováno v:
ETRI Journal, Vol 46, Iss 2, Pp 323-332 (2024)
Receiver and transmitter monolithic microwave integrated circuit (MMIC) multifunction chips (MFCs) for active phased-array antennas for Ka-band satellite communication (SATCOM) terminals have been designed and fabricated using a 0.15-μm GaAs pseudom
Externí odkaz:
https://doaj.org/article/ceeb8f4019e04b408ca6f88fc483f0b9
Autor:
Ziad S. Haddad, Ousmane O. Sy
Publikováno v:
IEEE Journal of Microwaves, Vol 4, Iss 4, Pp 858-870 (2024)
This narrative tells the story of how NASA's INCUS (INvestigation of Convective UpdraftS) mission was conceived and designed, to identify and flesh out a scientific investigation that would be conducted using newly developed miniaturized weather rada
Externí odkaz:
https://doaj.org/article/ed15130f0dcb4e85bc3a05823bacd31c
Publikováno v:
IEEE Access, Vol 12, Pp 174705-174712 (2024)
A cavity-backed slot antenna for airborne broadband Ka-band applications based on Substrate Integrated Waveguide (SIW) technology is proposed in this paper. The antenna features a novel slot with a shorting-via and is fed through a coplanar waveguide
Externí odkaz:
https://doaj.org/article/d98bbff15e354038b6154252a07e69b1
Publikováno v:
IEEE Open Journal of Vehicular Technology, Vol 5, Pp 1756-1765 (2024)
The integration of non-terrestrial networks (NTN) and terrestrial networks, driven by the developments in 5G, 5G-advanced, and 6G, have resulted in an abundance of new and unique application scenarios for exploiting existing and upcoming satellite ne
Externí odkaz:
https://doaj.org/article/c57a31c6a5f9432fbf3cf7c2f0995bb0
Publikováno v:
IEEE Access, Vol 12, Pp 116105-116113 (2024)
This work introduces a refined technique for the estimation of films permittivity within the Ka-band using free-space measurement method. Addressing the challenge of wrong solutions in permittivity estimation, our approach incorporates a frequency-de
Externí odkaz:
https://doaj.org/article/77a5ab3a9e3a4fceaf8b0c5300f1d8ff
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 4, Pp 1095-1107 (2024)
In this article, two multibeam reflectarray antennas are presented for Ka-band in a multi-feed configuration. Both feature a wide-angle scanning range with very low scan losses. They are designed using an iterative optimization process based on a pha
Externí odkaz:
https://doaj.org/article/75387dd960fd42b9a6faaba95218db6a
Publikováno v:
IEEE Access, Vol 12, Pp 86346-86354 (2024)
This paper proposes a compact cross-shaped groove gap waveguide structure for creating wideband and compact directional couplers with different coupling levels. Groove gap waveguide technology is applied to overcome fabrication challenges of printed
Externí odkaz:
https://doaj.org/article/a3010811b1bc4d28a8bb1eebf177f48d
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 7878-7887 (2024)
A part of the preprocessed beta Ka-band radar interferometer (KaRIn) data (7 September–21 November 2023) for the surface water and ocean topography (SWOT) mission has been released. To validate the performance of SWOT L2 KaRIn beta prevalidated dat
Externí odkaz:
https://doaj.org/article/cc125b8498b841ea8ae6a9682af7d2c4
Low-Sidelobe Flat Panel Array Fed by a 3D-Printed Half-Mode Gap Waveguide Amplitude-Tapering Network
Autor:
Adrian Castella-Montoro, Miguel Ferrando-Rocher, Jose Ignacio Herranz-Herruzo, Alejandro Valero-Nogueira
Publikováno v:
IEEE Access, Vol 12, Pp 2607-2614 (2024)
This article presents the design and evaluation of an $8\times 8$ Ka-band low-sidelobe slot array antenna using gap waveguide technology. The slot array is fed by a single-layer amplitude-tapering network implemented in half-mode groove gap waveguide
Externí odkaz:
https://doaj.org/article/9fc7483434e64d5bbe4794215158e4ff