Title :
A full ka-band microstrip-to-waveguide transition using tapered CPS probe and V-antenna
Author :
Li, Jin ; Ying, Qiancheng ; Xu, Jun
Author_Institution :
Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel Ka-band microstrip-to-waveguide transition is presented in this paper. This transition is composed of a tapered coplanar strip (CPS) and a V-antenna which are inserted from E-plane center of a rectangular waveguide end. The mode transformation between waveguide and microstrip is achieved by electric field structural conversion in these two components. The impedance matching was also considered in the CPS design. The transition has characteristics of in-line structure, integration feasibility and compatibility in monolithic microwave integrated circuit (MMIC) technology. The Ka-band back-to-back transition fabricated on RT-duriod 5880 substrate demonstrates more than 85% bandwidth with overall measured insertion loss less than 1.5dB and return loss better than 15dB.
Keywords :
MMIC; coplanar waveguides; impedance matching; losses; microstrip transitions; microwave antennas; rectangular waveguides; E-plane center; Ka band; RT-duriod 5880 substrate; V-Antenna; coplanar strip; electric field structural conversion; impedance matching; inline structure; insertion loss; microstrip-to-waveguide transition; mode transformation; monolithic microwave integrated circuit; rectangular waveguide end; return loss; tapered CPS probe antenna; Electric fields; Impedance; Insertion loss; Loss measurement; Microstrip; Strips; Waveguide transitions; CPS; Ka-band; V-antenna; in-line; microstrip; transition; waveguide;
Conference_Titel :
Microwave Conference (GeMiC), 2012 The 7th German
Conference_Location :
Ilmenau
Print_ISBN :
978-1-4577-2096-3
Electronic_ISBN :
978-3-9812668-4-9
