Weiqiang Chen et al 2007 J. Micromech. Microeng. 17 2352 doi:10.1088/0960-1317/17/11/024
Weiqiang Chen, Guifu Ding, Zhijuan Su and Binhong Li
Show affiliationsA novel CPW-fed millimeter wave slot antenna for broadband circular polarization and unidirectional radiation with multilayer 3D structures is discussed. The antenna is fabricated based on micro-electro-mechanical systems micro-fabrication technology. Through a special short-circuiting stub perturbation method, the circular ring slot antenna generates circularly polarized radiation and achieves a broad impedance bandwidth of 20% with voltage standing-wave ratio (VSWR) ≤ 2 and circularly polarized bandwidth of 17.6% with AR ≤ 3 dB. By adding a special wave guiding slot structure and wave cutoff slot structure, a novel approximate perfect magnetic conductor surface, the antenna radiates unidirectionally and the peak gain increases from about 5.2 dB to 7.5 dB.
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
Issue 11 (November 2007)
Received 9 July 2007, in final form 16 September 2007
Published 17 October 2007
Weiqiang Chen et al 2007 J. Micromech. Microeng. 17 2352
David K Ferry 2009 J. Phys.: Condens. Matter 21 474201
Ampere A Tseng 2004 J. Micromech. Microeng. 14 R15
L Wu et al 2003 Supercond. Sci. Technol. 16 1127
John A. R. Caldwell et al. 2008 ApJS 174 136
Alex B Nielsen and Matt Visser 2006 Class. Quantum Grav. 23 4637
Alan J Bray and Richard Smith 2007 J. Phys. A: Math. Theor. 40 10965
R Mohan Sankaran and K P Giapis 2003 J. Phys. D: Appl. Phys. 36 2914
Emad M AboEldahab 2000 J. Phys. D: Appl. Phys. 33 3180
M. Selwa et al 2007 ApJ 668 L83