Title:
チューナブル位相シフタおよびそれに対するアプリケーション
Document Type and Number:
Japanese Patent JP4031367
Kind Code:
B2
Abstract:
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular topology for the ferro-electric capacitor and the metal losses are accounted for to quantify the allowable ferro-electric losses.
Inventors:
Tonchik, Stanley S.
Wallace, Raymond Curtis
Wallace, Raymond Curtis
Application Number:
JP2002581614A
Publication Date:
January 09, 2008
Filing Date:
April 10, 2002
Export Citation:
Assignee:
Kyocera Wireless Corp.
International Classes:
H01G4/12; H04B1/30; G01R27/26; H01G4/33; H01G4/40; H01G7/06; H01P1/20; H01P1/203; H01P1/205; H01P1/213; H01P7/08; H01Q1/38; H01Q3/44; H01Q9/04; H01Q9/14; H01Q9/16; H01Q9/28; H01Q9/30; H01Q13/08; H03B5/08; H03B5/12; H03B5/18; H03F1/56; H03F3/191; H03H7/20; H03H7/38; H03J5/24; H03L1/02; H03L7/18; H04B1/40; H04L27/38; H03H7/01; H03H7/12
Domestic Patent References:
| JP6502977A |
Foreign References:
| EP0473373A1 | ||||
| WO2000024079A1 | ||||
| US5479139 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita