Techniques for antenna sidelobe suppression and laser power reduction in optically controlled array antenna

Yoshihiko Konishi, Wataru Chujo, Hisao Iwasaki, Koji Yasukawa

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

In this paper, required output power of a laser source and suppression of antenna sidelobe level are discussed for an optically controlled array antenna in which microwave amplitude and phase distributions are generated and controlled using optical Fourier transform and heterodyne/homodyne detection. A heterodyne detection model using two laser diodes, frequency difference of which is set to desired microwave frequency, is compared with an original homodyne detection model using an external frequency modulator. The heterodyne detection model may be favorable from the viewpoint of available laser diode output power. For example, the required laser output power in the heterodyne detection model can be about 10-15 dB less than that in the homodyne detection model in order to obtain the same C/N0 value of microwave signal. It is also shown that antenna sidelobe level can be suppressed about 20 dB without changing beamwidth by using a reference beam with a tapered distribution.

元の言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
編集者Brian M. Hendrickson, A.Gerhard Koepf
出版者Publ by Int Soc for Optical Engineering
ページ26-34
ページ数9
ISBN(印刷物)0819402583
出版物ステータスPublished - 1990 12 1
イベントOptoelectronic Signal Processing for Phased-Array Antennas II - Los Angeles, CA, USA
継続期間: 1990 1 161990 1 17

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
1217
ISSN(印刷物)0277-786X

Other

OtherOptoelectronic Signal Processing for Phased-Array Antennas II
Los Angeles, CA, USA
期間90/1/1690/1/17

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • これを引用

    Konishi, Y., Chujo, W., Iwasaki, H., & Yasukawa, K. (1990). Techniques for antenna sidelobe suppression and laser power reduction in optically controlled array antenna. : B. M. Hendrickson, & A. G. Koepf (版), Proceedings of SPIE - The International Society for Optical Engineering (pp. 26-34). (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 1217). Publ by Int Soc for Optical Engineering.