Akira AKIYAMA


Bandwidth of Electronically Steerable Parasitic Array Radiator Antennas in Single Beam Scanning
Katsuhisa ITO Akira AKIYAMA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/09/01
Vol. E86-B  No. 9  pp. 2844-2847
Type of Manuscript:  LETTER
Category: Antennas and Propagation
Keyword: 
adaptive antennaESPAR antennavariable reactorvariable rangerelative bandwidth
 Summary | Full Text:PDF(580.4KB)

A Millimeter-Wave Radial Line Slot Antenna Fed by a Rectangular Waveguide through a Ring Slot
Kaoru SUDO Akira AKIYAMA Jiro HIROKAWA Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/10/01
Vol. E84-C  No. 10  pp. 1521-1527
Type of Manuscript:  Special Section PAPER (Special Issue on Millimeter-Wave Circuits and Fabrication Technologies Opening up the 21st Century)
Category: 
Keyword: 
planer antenna for 38 GHz band FWAradial line slot antenna-rectangular/circular waveguide transformercircular polarizationrotation electric mode
 Summary | Full Text:PDF(2.3MB)

60 GHz Band Small Aperture Conical Beam Radial Line Slot Antennas
Akira AKIYAMA Jiro HIROKAWA Makoto ANDO Eriko TAKEDA Yukikazu ARAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1229-1235
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Phased Arrays and Antennas
Keyword: 
radial line slot antennaplanar antennaconical beammillimeter wave
 Summary | Full Text:PDF(1.3MB)