1990 Fiscal Year Annual Research Report

ミリ波集積回路のための単一平面構造導波路の設計法と電力漏洩現象に関する基礎的研究

Research Project

Project/Area Number	63550261
Research Institution	Doshisha University
Principal Investigator	繁沢宏同志社大学, 工学部, 教授 (10066251)
Co-Investigator(Kenkyū-buntansha)	辻幹男同志社大学, 工学部, 助教授 (50148376)
Keywords	単一平面構造導波路 / マイクロストリップ線路 / コプレ-ナ線路 / 豊方性誘電体基板 / 漏洩現象 / キャンセレ-ショ現象
Research Abstract	本年度においては,ミリ波平面回路用伝送線路の動作周波数が高周波化していった場合に極めて重要な新規な伝搬現象が生じることについて深く研究を行った。それらは以下の2点にまとめられる。 (1)マイクロストリップ線路に伝搬する新しい複素波とそれが伝送特性にもたらす影響。超高周波帯での誘電体基板はしばしば異方性を示す。ところで,結晶軸方向とそれに垂直な方向の誘電率をε_<11>および〓とするとき,ε_<11><〓で且つ〓が1.5ε_<11>程度のものでは,低周波帯においてもこれまで見い出されていなかった複素波が伝搬し,しかもその減衰定数は極めて大なることを見い出した。このような複素波は線路に不連続部が存在すると,その部分の損失特性を大きく左右するように働くので,回路設計上,この複素波の振舞いを明確にしなければならない。本研究ではSD面上の根の軌跡等を用いてこの新しい複素波の特性を詳しく検討した。 (2)コプレ-ナ線路における漏洩転移点近傍の特異な分散特性についての検討。コプレ-ナ線路は3導体系の平面線路である。ところが,外部接地導体が有限,無限の幅を有することにかかわらず,ある周波数以上で漏洩現象が生じることはこれまでの研究で明らかにしてきた。いま漏洩が生じはじめる周波数(転移点)近傍を詳しく調べてみると,漏洩現象が存在すべき部分で何ケ所かこの現象が消滅することを見い出すことができた。これに対して,我々は別の新しい表面波が共振的に発生し,これの漏洩現象と本来のモ-ドからの漏洩波とが打ち消す如き動作(キャンセレ-ション)が生じた結果であると説明してきた。このキャンセレ-ションが生じると,分散特性な極めて複雑になり,伝送特性が悪化する。本研究ではキャンセレ-ションと線路構造との関係を明確にした。

Research Products
(18 results)

All Other

All Publications (18 results)

[Publications] Mikio,Tsuji: "TwoーPath CutoffーWaveguides for Filter Applications" IEICE Transactions(電子情報通信学会論文誌). E73. 705-711 (1990)
[Publications] Hiroshi Shigesawa: "A New ModeーCoupling Effect on Coplanar Waveguides on Finite Width" Digest of 1990 IEEE/MTTーS International Microwave Symposium. III. 1063-1066 (1990)
[Publications] Hiroshi Shigesawa: "Scattering from Finite Bodies of Dielectric Cylinder:Analysis and Comparative Experiments" Digest of 1990 IEEE/APーS International Antenna Propagation Symposium. III. 1272-1275 (1990)
[Publications] Mikio Tsuji: "TransitionーRegion Behavior of A New Leakage Effect on Microstrip Lines with Anisotropic Substrates" Digest of 1990 URSI Radio Science Meeting. 341-341 (1990)
[Publications] Mikio Tsuji: "Power Leakage from the Dominant Mode on Coplanar Waveguides with Finite or Infinite Width" Digest of 1990 URSI Radio Science Meeting. 340-340 (1990)
[Publications] Mikio Tsuji: "PrintedーCirwit Analysis by a New ModeーMatching Method based on the EdgeーEffect Theory" Proceedings on 20th European Microwave Conference. 1. 847-852 (1990)
[Publications] Mikio Tsuji: "Amazing Effect of SerpentineーShaped Taper in Designing Planar Dielectric Waveguide Branck Circuits" Proceedings on 20th European Microwave Conference. 2. 1059-1064 (1990)
[Publications] Mikio Tsuji: "EdgeーEffect Theory in ModeーMatching Method for the Analysis of Printed Circuits" Proceedings on the 3rd AsiaーPacific Microwave Conference. 723-726 (1990)
[Publications] Mikio Tsuji: "Theory and Experiments of Mode Coupling and Power Leakage on Coplanar Waveguides of Finite Width" Proceeding on the 3rd AsiaーPacific Microwave Conference. 819-822 (1990)
[Publications] Hiroshi Shigesawa: "New Physical Effects of Dominant Mode on PrintedーCircuit Waveguides" Proceedings on the 3rd JapanーChina Jaint Meeting on OFSET. EMTー90ー150. 57-66 (1990)
[Publications] Mikio Tsuji: "Theorelical and Experimental Study on Three Dimensional Scattering Problems" Proceedings on the 3rd JapanーChina Joint Meeting on OFSET. EMTー90ー169. 59-68 (1990)
[Publications] Mikio Tsuji: "LowーLoss Design Method of Planar DielectricーWaveguide Y Branch:Effect of SerpentineーShaped Taper" IEEE Transactions on Microwave Theory Thechniques. 39. 6-13 (1991)
[Publications] Hiroshi Shigesawa: "Dominant Mode Leakage from PrintedーCircuit Waveguides" Radio Science. 39. (1991)
[Publications] Mikio Tsuji: "Theory and Experiments of Mode Coupling and Power Leakage on Coplanar Waveguide of Finife Width" IEICE Trausactions(電子情報通信学会論文誌). E74. (1991)
[Publications] Mikio Tsuji: "EdgeーEffect theory in ModeーMatching Method for the Analysis of PrintedーCircuits Waveguides" IEICE Trausactions(電子情報通信学会論文誌). (1991)
[Publications] Mikio Tsuji: "New Interesting Leakage Behavior on Coplanar Waveguides of Finite and Infinite Widths" Digest of 1991 IEEE/MTTーS International Microwave Symposium. (1991)
[Publications] Hiroshi Shigesawa: "Unusual TransitionーRegion Behavior Between Bound and Leakage Ravges Microstrip Lines with Anisotropic Sutstrates" Digest of 1991 URSI Radio Science Meeting. (1991)
[Publications] Mikio Tsuji: "Different Types of Bound to Leaky Mode Transitions" Digest of 1991 URSI Radio Science Meeting. (1991)

1990 Fiscal Year Annual Research Report

ミリ波集積回路のための単一平面構造導波路の設計法と電力漏洩現象に関する基礎的研究

Principal Investigator

繁沢 宏 同志社大学, 工学部, 教授 (10066251)

Research Products

[Publications] Mikio,Tsuji: "TwoーPath CutoffーWaveguides for Filter Applications" IEICE Transactions(電子情報通信学会論文誌). E73. 705-711 (1990)

[Publications] Hiroshi Shigesawa: "A New ModeーCoupling Effect on Coplanar Waveguides on Finite Width" Digest of 1990 IEEE/MTTーS International Microwave Symposium. III. 1063-1066 (1990)

[Publications] Hiroshi Shigesawa: "Scattering from Finite Bodies of Dielectric Cylinder:Analysis and Comparative Experiments" Digest of 1990 IEEE/APーS International Antenna Propagation Symposium. III. 1272-1275 (1990)

[Publications] Mikio Tsuji: "TransitionーRegion Behavior of A New Leakage Effect on Microstrip Lines with Anisotropic Substrates" Digest of 1990 URSI Radio Science Meeting. 341-341 (1990)

[Publications] Mikio Tsuji: "Power Leakage from the Dominant Mode on Coplanar Waveguides with Finite or Infinite Width" Digest of 1990 URSI Radio Science Meeting. 340-340 (1990)

[Publications] Mikio Tsuji: "PrintedーCirwit Analysis by a New ModeーMatching Method based on the EdgeーEffect Theory" Proceedings on 20th European Microwave Conference. 1. 847-852 (1990)

[Publications] Mikio Tsuji: "Amazing Effect of SerpentineーShaped Taper in Designing Planar Dielectric Waveguide Branck Circuits" Proceedings on 20th European Microwave Conference. 2. 1059-1064 (1990)

[Publications] Mikio Tsuji: "EdgeーEffect Theory in ModeーMatching Method for the Analysis of Printed Circuits" Proceedings on the 3rd AsiaーPacific Microwave Conference. 723-726 (1990)

[Publications] Mikio Tsuji: "Theory and Experiments of Mode Coupling and Power Leakage on Coplanar Waveguides of Finite Width" Proceeding on the 3rd AsiaーPacific Microwave Conference. 819-822 (1990)

[Publications] Hiroshi Shigesawa: "New Physical Effects of Dominant Mode on PrintedーCircuit Waveguides" Proceedings on the 3rd JapanーChina Jaint Meeting on OFSET. EMTー90ー150. 57-66 (1990)

[Publications] Mikio Tsuji: "Theorelical and Experimental Study on Three Dimensional Scattering Problems" Proceedings on the 3rd JapanーChina Joint Meeting on OFSET. EMTー90ー169. 59-68 (1990)

[Publications] Mikio Tsuji: "LowーLoss Design Method of Planar DielectricーWaveguide Y Branch:Effect of SerpentineーShaped Taper" IEEE Transactions on Microwave Theory Thechniques. 39. 6-13 (1991)

[Publications] Hiroshi Shigesawa: "Dominant Mode Leakage from PrintedーCircuit Waveguides" Radio Science. 39. (1991)

[Publications] Mikio Tsuji: "Theory and Experiments of Mode Coupling and Power Leakage on Coplanar Waveguide of Finife Width" IEICE Trausactions(電子情報通信学会論文誌). E74. (1991)

[Publications] Mikio Tsuji: "EdgeーEffect theory in ModeーMatching Method for the Analysis of PrintedーCircuits Waveguides" IEICE Trausactions(電子情報通信学会論文誌). (1991)

[Publications] Mikio Tsuji: "New Interesting Leakage Behavior on Coplanar Waveguides of Finite and Infinite Widths" Digest of 1991 IEEE/MTTーS International Microwave Symposium. (1991)

[Publications] Hiroshi Shigesawa: "Unusual TransitionーRegion Behavior Between Bound and Leakage Ravges Microstrip Lines with Anisotropic Sutstrates" Digest of 1991 URSI Radio Science Meeting. (1991)

[Publications] Mikio Tsuji: "Different Types of Bound to Leaky Mode Transitions" Digest of 1991 URSI Radio Science Meeting. (1991)

繁沢宏同志社大学, 工学部, 教授 (10066251)