Keyword : aperture efficiency


Effects of Diffraction and Feed Pattern Variation in Shaped Offset Gregorian Reflectors
Dirk I. L. DE VILLIERS Robert LEHMENSIEK Marianna V. IVASHINA 
Publication:   
Publication Date: 2018/02/01
Vol. E101-B  No. 2 ; pp. 316-323
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
Category: Antennas
Keyword: 
aperture efficiencyreflector antennasradio astronomy
 Summary | Full Text:PDF(2.8MB)

A Coaxial Feeder with Two Pairs of Parasitic Pins for Realizing Rotationally Symmetric Aperture Illumination in Spiral Array Radial Line Slot Antennas
Hideki UEDA Jiro HIROKAWA Makoto ANDO Matteo ALBANI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/10/01
Vol. E93-B  No. 10 ; pp. 2554-2561
Type of Manuscript:  Special Section PAPER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
Category: Antennas
Keyword: 
spiral array radial line slot antennasidelobeaperture efficiencyfeeding structure
 Summary | Full Text:PDF(2.3MB)

Multimode Horn with Low Cross Polarization Optimized for Dual-Band Use
Hiroyuki DEGUCHI Takaharu GOTO Mikio TSUJI Hiroshi SHIGESAWA Soichi MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/09/01
Vol. E87-B  No. 9 ; pp. 2777-2782
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
horn antennasaperture efficiencycross polarizationradiation patterns
 Summary | Full Text:PDF(839.6KB)

A Study of Aspect Ratio of the Aperture and the Effect on Antenna Efficiency in Oversized Rectangular Slotted Waveguide Arrays
Hisahiro KAI Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6 ; pp. 1623-1630
Type of Manuscript:  PAPER
Category: Antenna and Propagation
Keyword: 
parallel plate slotted waveguide arraysoversized rectangular slotted waveguide arraysaperture efficiencyaperture illuminationaspect ratio
 Summary | Full Text:PDF(2.9MB)