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

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972584

Filename

5972584