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Deep Analysis of Imaging Characteristics of Spaceborne SAR Systems as Affected by Antennas Using 3D Antenna Pattern. [PDF]

Sensors (Basel)
Shi W, Huang H, Gao W, Zhou H, Jiang H.
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Impedance Synthesis of Flat Slot Antenna Arrays

2020 IEEE Ukrainian Microwave Week (UkrMW), 2020
A problem of impedance synthesis of a two-dimensional flat antenna arrays consisting of narrow linear slots is solved. The slots are cut in a perfectly conducting screen, which geometric centers coincide with nodes of a rectangular grid with double periodicity. The slots are excited by voltage δ-generators in the center of the slot apertures.
Víctor Katrich, Sergey L Berdnik
exaly   +2 more sources

Unipole‐slot array antennas

Electronics and Communications in Japan (Part I: Communications), 1983
AbstractOne of the self‐complementary antennas is axially symmetric and three‐dimensional. Since this antenna has an axially‐symmetrical antenna, made of a finite‐sized plate, it becomes a hard‐to‐control multibeam antenna. to obtain a single beam we remove one of the unipole arrays from a self‐complementary unipole‐slot array antenna made of two ...
Takayuki Ishizone, Yukio Yokoyama, Shoichi Nishimura, Yasuto Mushiake   +3 more
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"Infinite Bandwidth" long slot array antenna

IEEE Antennas and Wireless Propagation Letters, 2005
This work deals with the properties of a long slot array fed by an array of periodically located feeds spaced at a Nyquist interval. The study begins with the rigorous Green's function (GF) of a single long slot which was extended to an infinite array structure. After this, the input impedance properties of the array when fed by an array of /spl delta/
Neto, A., Lee, J.J.
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Design of a Slot Antenna Array Using Array-antenna Decoupling Surface

2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2019
A decoupling method for a slot antenna array is proposed in this paper. The array-antenna decoupling surface (ADS), which consists of partial reflection metal patches, is designed to reduce the mutual coupling among antenna elements. A prototype of a four elements slot antenna array using ADS is demonstrated.
Jie Chen, Liping Han, Rongcao Yang, Wenmei Zhang   +3 more
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Conformal slotted waveguide array antenna

2012 IEEE International Workshop on Antenna Technology (iWAT), 2012
A new slotted rectangular waveguide array antenna is introduced, which is constructed on the conformal cylindrical surface. Unlike other slotted waveguide arrays, this array has a beam with a large tilt angle from the broadside of the linear array. The array consists of a waveguide with inclined slots cutting in the narrow wall and a matching load at ...
Yuan-Yun Liu, Min Guo, Shun-Shi Zhong
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A slot-array antenna on a coaxial cylinder

IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36194), 2002
In mobile communication, omnidirectional directivity and circular polarization are convenient properties because when they are used, acquisition and track operations for direction and polarization are not needed. As an antenna which has such properties, we developed a slot-array antenna on an oversize coaxial cylinder.
K. Iigusa, S. Yamamoto, M. Tanaka, T. Teshirogi   +3 more
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Annular slot monopulse antenna arrays

IEEE Transactions on Antennas and Propagation, 1964
This paper describes the design and performance of annular slot planar arrays which generate pencil beams and monopulse tracking beams in both principal planes. These planar arrays consist of a transmission line in the form of a radial waveguide whose upper plate contains annular groups of linear slots.
K. Kelly, F. Goebels
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