JPH0344910U - - Google Patents
Info
- Publication number
- JPH0344910U JPH0344910U JP10583089U JP10583089U JPH0344910U JP H0344910 U JPH0344910 U JP H0344910U JP 10583089 U JP10583089 U JP 10583089U JP 10583089 U JP10583089 U JP 10583089U JP H0344910 U JPH0344910 U JP H0344910U
- Authority
- JP
- Japan
- Prior art keywords
- plate
- radiation
- radiating
- distance
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005855 radiation Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Description
第１図は本考案の第１実施例としての円形アン
テナの平面図、第２図は第１図の−矢視断面
図、第３図はその部分断面の等価回路、第４図は
その伝播モードの説明図、第５図はその他のモー
ドで励振した場合の部分断面の等価回路、第６図
は本考案の第２実施例としての円形アンテナの平
面図であり、第７図は従来の円形アンテナの平面
図である。
１……放射板、１ａ……電力放射用開口として
のスロツト、１ａ′……最外周の電力放射用開口
としてのスロツト、２……底板、３……金属製側
壁板、４……給電部、１０……円形アンテナ、Ｌ
……最外周のスロツトから放射板の外周縁までの
距離、Ｓ……導波空間、Ｚｏ……導波線路の特性
インピーダンス、Ｚｓｌ……最外周のスロツトの
インピーダンス。
Fig. 1 is a plan view of a circular antenna as the first embodiment of the present invention, Fig. 2 is a sectional view taken along the - arrow in Fig. 1, Fig. 3 is an equivalent circuit of a partial cross section, and Fig. 4 is its propagation. An explanatory diagram of the modes, FIG. 5 is a partial cross-sectional equivalent circuit when excited in other modes, FIG. 6 is a plan view of a circular antenna as a second embodiment of the present invention, and FIG. 7 is a conventional FIG. 3 is a plan view of a circular antenna. DESCRIPTION OF SYMBOLS 1...Radiation plate, 1a...Slot as an opening for power radiation, 1a'...Slot as an opening for power radiation on the outermost periphery, 2...Bottom plate, 3...Metal side wall plate, 4...Power supply section , 10...Circular antenna, L
... Distance from the outermost slot to the outer peripheral edge of the radiation plate, S... Waveguide space, Zo... Characteristic impedance of the waveguide, Zsl... Impedance of the outermost slot.
Claims (1)
放射板と、同放射板に対し離隔して配設されて内
部に導波空間を形成する上記放射板とほぼ同一形
状の底板と、同底板の中央部における給電用開口
に接続された給電部とをそなえた進行波型円形ア
ンテナにおいて、上記放射板の最外周に形成され
た上記電力放射用開口と上記放射板の円周端部と
の距離が、約λｇ／４あるいは約λｇ／２に設定
されていることを特徴とする、円形アンテナ。 A substantially circular radiation plate formed with a large number of power radiation openings, a bottom plate having approximately the same shape as the radiation plate and arranged at a distance from the radiation plate to form a waveguide space inside, and the same bottom plate. In the traveling wave circular antenna, the power radiating aperture formed at the outermost periphery of the radiating plate is connected to the circumferential end of the radiating plate. A circular antenna characterized in that the distance is set to about λg/4 or about λg/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583089U JPH0344910U (en) | 1989-09-08 | 1989-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583089U JPH0344910U (en) | 1989-09-08 | 1989-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344910U true JPH0344910U (en) | 1991-04-25 |
Family
ID=31654586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10583089U Pending JPH0344910U (en) | 1989-09-08 | 1989-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344910U (en) |
-
1989
- 1989-09-08 JP JP10583089U patent/JPH0344910U/ja active Pending