| Paper Abstract and Keywords |
| Presentation |
2006-09-05 13:50
High-Directivity λ/4 Microstrip Couplers with a Periodic Structure on Coupled Edges
Takao Fujii, Isao Ohta, Yoshihiro Kokubo (Univ. of Hyogo) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
A /4 microstrip coupled-line coupler suffers from the deterioration of directivity because of the phase velocity difference between the even- and odd-mode due to the inhomogeneous structure. In particular, it becomes remarkable for a loose-coupling coupler. Therefore, various techniques for directivity improvement are suggested. In this paper, a new approach for phase velocities compensation, which utilizes periodic floating-conductors loading on the inner edges of the coupled-line, is presented.
After the design method of a 15-dB coupler is described in detail, 10- and 30-dB couplers are designed. As a result, a high directivity of 20-dB or more is obtained for each coupler without destroying the broadband properties. Moreover, the validity of the present design concept is confirmed by electromagnetic simulations and experiments. This improvement technique is marked by easily realizing high directivity in a fully-planar structure. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Directional coupler / Backward coupler / Coupled-line / Periodic structure / Microwave / Passive component / / |
| Reference Info. |
IEICE Tech. Rep., vol. 106, no. 231, MW2006-92, pp. 97-102, Sept. 2006. |
| Paper # |
MW2006-92 |
| Date of Issue |
2006-08-29 (MW) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
MW |
| Conference Date |
2006-09-05 - 2006-09-07 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
|
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
|
| Paper Information |
| Registration To |
MW |
| Conference Code |
2006-09-MW |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
High-Directivity λ/4 Microstrip Couplers with a Periodic Structure on Coupled Edges |
| Sub Title (in English) |
|
| Keyword(1) |
Directional coupler |
| Keyword(2) |
Backward coupler |
| Keyword(3) |
Coupled-line |
| Keyword(4) |
Periodic structure |
| Keyword(5) |
Microwave |
| Keyword(6) |
Passive component |
| Keyword(7) |
|
| Keyword(8) |
|
| 1st Author's Name |
Takao Fujii |
| 1st Author's Affiliation |
University of Hyogo (Univ. of Hyogo) |
| 2nd Author's Name |
Isao Ohta |
| 2nd Author's Affiliation |
University of Hyogo (Univ. of Hyogo) |
| 3rd Author's Name |
Yoshihiro Kokubo |
| 3rd Author's Affiliation |
University of Hyogo (Univ. of Hyogo) |
| 4th Author's Name |
|
| 4th Author's Affiliation |
() |
| 5th Author's Name |
|
| 5th Author's Affiliation |
() |
| 6th Author's Name |
|
| 6th Author's Affiliation |
() |
| 7th Author's Name |
|
| 7th Author's Affiliation |
() |
| 8th Author's Name |
|
| 8th Author's Affiliation |
() |
| 9th Author's Name |
|
| 9th Author's Affiliation |
() |
| 10th Author's Name |
|
| 10th Author's Affiliation |
() |
| 11th Author's Name |
|
| 11th Author's Affiliation |
() |
| 12th Author's Name |
|
| 12th Author's Affiliation |
() |
| 13th Author's Name |
|
| 13th Author's Affiliation |
() |
| 14th Author's Name |
|
| 14th Author's Affiliation |
() |
| 15th Author's Name |
|
| 15th Author's Affiliation |
() |
| 16th Author's Name |
|
| 16th Author's Affiliation |
() |
| 17th Author's Name |
|
| 17th Author's Affiliation |
() |
| 18th Author's Name |
|
| 18th Author's Affiliation |
() |
| 19th Author's Name |
|
| 19th Author's Affiliation |
() |
| 20th Author's Name |
|
| 20th Author's Affiliation |
() |
| 21st Author's Name |
|
| 21st Author's Affiliation |
() |
| 22nd Author's Name |
|
| 22nd Author's Affiliation |
() |
| 23rd Author's Name |
|
| 23rd Author's Affiliation |
() |
| 24th Author's Name |
|
| 24th Author's Affiliation |
() |
| 25th Author's Name |
|
| 25th Author's Affiliation |
() |
| 26th Author's Name |
/ / |
| 26th Author's Affiliation |
()
() |
| 27th Author's Name |
/ / |
| 27th Author's Affiliation |
()
() |
| 28th Author's Name |
/ / |
| 28th Author's Affiliation |
()
() |
| 29th Author's Name |
/ / |
| 29th Author's Affiliation |
()
() |
| 30th Author's Name |
/ / |
| 30th Author's Affiliation |
()
() |
| 31st Author's Name |
/ / |
| 31st Author's Affiliation |
()
() |
| 32nd Author's Name |
/ / |
| 32nd Author's Affiliation |
()
() |
| 33rd Author's Name |
/ / |
| 33rd Author's Affiliation |
()
() |
| 34th Author's Name |
/ / |
| 34th Author's Affiliation |
()
() |
| 35th Author's Name |
/ / |
| 35th Author's Affiliation |
()
() |
| 36th Author's Name |
/ / |
| 36th Author's Affiliation |
()
() |
| Speaker |
Author-1 |
| Date Time |
2006-09-05 13:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
MW |
| Paper # |
MW2006-92 |
| Volume (vol) |
vol.106 |
| Number (no) |
no.231 |
| Page |
pp.97-102 |
| #Pages |
6 |
| Date of Issue |
2006-08-29 (MW) |