✦ LIBER ✦

Development of phased array antenna by controlling the filling factor of periodic structure

✍ Scribed by Mohammad Nurunnabi Mollah; Nemai C. Karmakar; Jeffrey S. Fu

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 369 KB
Volume: 17
Category: Article
ISSN: 1096-4290
DOI: 10.1002/mmce.20230

No coin nor oath required. For personal study only.

✦ Synopsis

A phased array antenna is realized by utilizing the variation of filling factor (FF) of electromagnetic bandgap (EBG) structures. The variation takes place under the feed line of a 4-element array that gives the change in relative phase shift. The phase shift achieved from different combinations of EBGS lying under the feed lines is used in personal computer aided antenna design software, PCAAD 4.0, to see the beam steering capacity. Then the same feed lines are connected with four microstrip patches to yield a 4-elements phased array antenna. The 4-elements phased array antenna is simulated in electromagnetic (EM) software Zeland IE3D. Finally, the design is fabricated with the help of milling machine that takes the help of ISOPRO and QUICKCAM software. It can be seen that the beam steering angle increases with the increase of FFs. Thus a novel FF of EBGS based phased array antenna is developed. V

📜 SIMILAR VOLUMES

Reduction of near field interference by

Reduction of near field interference by beam controlling in a transmit phased array antenna

✍ Rumiko Yonezawa; Yoshihiko Konishi; Isamu Chiba; Shuji Urasaki 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 273 KB 👁 2 views

A method of reducing the electromagnetic interference over a broad frequency range by controlling the excitation phase of the element antennas for beam shaping in a phase array used in such systems as wireless LAN is discussed. In this method, an optimum excitation phase of each element antenna is d

Measurement of antenna factor of log per

Measurement of antenna factor of log periodic dipole array antenna by near-field reference antenna method

✍ Katsumi Fujii; Takashi Iwasaki; Shinobu Ishigami; Shogo Usuda 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 236 KB 👁 2 views

If the antenna factor is defined as the ratio of incident electric field strength to the output voltage with zero reflection at the load, relative measurement of the antenna factor can be carried out using a reference antenna with a known antenna factor. In this study, an antenna factor of a log dip

Seeker optimization algorithm for interf

Seeker optimization algorithm for interference suppression of linear antenna arrays by controlling position-only, phase-only, and amplitude-only

✍ K. Guney; S. Basbug 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 401 KB

In this article, a stochastic search technique based on seeker optimization algorithm (SOA) is proposed for null steering of linear antenna arrays by controlling the position-only, phase-only, and amplitude-only. The SOA is relatively new optimization algorithm based on the concept of simulating the

Improvement in spectral response of the

Improvement in spectral response of the arrayed-waveguide grating by external phase control

✍ Hiroaki Yamada; Kazumasa Takada 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 139 KB

16th

High-resolution X-ray diffraction as a t

High-resolution X-ray diffraction as a tool to investigate the evolution of local stress in sub-micrometric Si lines isolated by periodic arrays of oxide-filled trenches

✍ S. Escoubas; M. Eberlein; P. Rohr; O. Thomas 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 466 KB

In situ control of the growth of GaAs /

In situ control of the growth of GaAs / GaAlAs structures in a metalorganic vapour phase epitaxy reactor by laser reflectometry

✍ R. Azoulay; Y. Raffle; R. Kuszelewicz; G. Le Roux; L. Dugrand; J.C. Michel 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 542 KB