Dielectric materials for dielectric resonators

Hi guys,

I need to design a dielectric resonator filter at 12GHz. And I want to use high Q
materials. Do you know any companies that manufacture dielectric materials.

Thanks in advance. Any help will be apprieciated.

Jane

Added after 2 hours 12 minutes:

Does anyone know? ^_^

Kyocera, Hirai

Morgan Electro Ceramics,
Ruabon, Wrexham, United Kingdom, LL14 6HY

Token Electronics / Sane Ho
Worldwide Mail: token.group@gmail.com,token_all@yahoo.com

AREMCO Products, Inc.

I know Kyocera, but I can't find Hirai. Can you give me the website?

Thank you.

http://www.hirai.co.jp/

I've checked all the websites, Token has some material that meets my need. Thanks!

Added after 8 minutes:

I've looked it up, it seems to be a compancy relating LTCC or laminating, but not dielectric resonator. Thank you all the same.