发明名称 |
Antenna tuning system and method |
摘要 |
A dynamic antenna tuning system particularly adapted for VLF frequency-shift (as opposed to on-off) keyed transmitters, employing saturable magnetic switching amplifiers providing variable tuning inductance between the antenna and transmitter and controlled to effect a gradual and not abrupt switching of the radio frequency during on-off transitions to enable narrow VLF frequency spectrum operation.
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申请公布号 |
US4689803(A) |
申请公布日期 |
1987.08.25 |
申请号 |
US19850742744 |
申请日期 |
1985.06.10 |
申请人 |
MEGAPULSE INC. |
发明人 |
JOHANNESSEN, PAUL R.;PLANCK, PETER V. |
分类号 |
H03J7/02;H04L27/12;(IPC1-7):H04L27/10 |
主分类号 |
H03J7/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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