Title :
Design and fabrication of PTFE-filled waveguide cruciform coupler with air-filled posts
Author :
Kishihara, Mitsuyoshi ; Ikeuchi, H. ; Murai, K. ; Azeta, T. ; Utsumi, Y. ; Kawai, T. ; Ohta, I.
Author_Institution :
Okayama Prefectural Univ., Okayama, Japan
Abstract :
This paper proposes a PTFE-filled waveguide cruciform coupler with air-filled posts. Directivity and matched state of the coupler can be realized by “holes” in the dielectric material. The difference of dielectric constant is positively used in designing. First, the design method based on the planar circuit approach is described. Then, the PTFE-filled waveguide cruciform 3dB coupler is designed at Q-Band. Next, the cruciform 3dB coupler is fabricated using the SR (synchrotron radiation) etching process of PTFE, sputter deposition of metal, and electroplating. The measurement results of the fabricated cruciform 3dB coupler are shown.
Keywords :
dielectric materials; electroplating; microwave materials; permittivity; polymers; rectangular waveguides; sputter deposition; synchrotron radiation; waveguide couplers; PTFE-filled waveguide cruciform coupler; air-filled posts; dielectric constant; dielectric material; electroplating; planar circuit; sputter deposition; synchrotron radiation etching process; Couplers; Electromagnetic waveguides; Etching; Fabrication; Frequency measurement; Sputtering; Strontium; Sputtering; X-ray lithography; dielectric materials; directional couplers; fabrication;
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972584
