JPH01107310U - - Google Patents
Info
- Publication number
- JPH01107310U JPH01107310U JP20057487U JP20057487U JPH01107310U JP H01107310 U JPH01107310 U JP H01107310U JP 20057487 U JP20057487 U JP 20057487U JP 20057487 U JP20057487 U JP 20057487U JP H01107310 U JPH01107310 U JP H01107310U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- impedance matching
- capacitor connected
- variable capacitor
- parallel
- 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
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図はこの考案の一実施例の回路図、第２図
は他の実施例の回路図、第３図、第４図、第５図
及び第６図はそれぞれ従来例の回路図、第７図は
可変容量ダイオードの特性を示すグラフである。
１……ＲＦコイル、２……コネクタ、３，４…
…インピーダンスマツチング用可変容量コンデン
サ、５……同調用可変容量コンデンサ、６，８，
１０，１１……コンデンサ、７，９……プラグイ
ンユニツト。
Figure 1 is a circuit diagram of one embodiment of this invention, Figure 2 is a circuit diagram of another embodiment, Figures 3, 4, 5, and 6 are circuit diagrams of a conventional example, respectively. FIG. 7 is a graph showing the characteristics of a variable capacitance diode. 1...RF coil, 2...connector, 3, 4...
...Variable capacitor for impedance matching, 5...Variable capacitor for tuning, 6, 8,
10, 11... Capacitor, 7, 9... Plug-in unit.
Claims (1)
同調用可変容量コンデンサと、上記コイルの両端
にそれぞれ直列に接続されるインピーダンスマツ
チング用可変容量コンデンサと、これらインピー
ダンスマツチング用可変容量コンデンサを介して
上記コイルに対し並列に接続されるコンデンサと
を有する、ＭＲＩ装置のＲＦアンテナ。 An RF coil, a tuning variable capacitor connected in parallel to this coil, an impedance matching variable capacitor connected in series to both ends of the coil, and a variable capacitor for impedance matching via these variable capacitors for impedance matching. An RF antenna for an MRI apparatus, comprising a capacitor connected in parallel to the coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20057487U JPH01107310U (en) | 1987-12-31 | 1987-12-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20057487U JPH01107310U (en) | 1987-12-31 | 1987-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01107310U true JPH01107310U (en) | 1989-07-19 |
Family
ID=31490976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20057487U Pending JPH01107310U (en) | 1987-12-31 | 1987-12-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01107310U (en) |
-
1987
- 1987-12-31 JP JP20057487U patent/JPH01107310U/ja active Pending
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