发明名称 |
Method of tuning a ceramic duplex filter using an averaging step |
摘要 |
A method of tuning a duplex filter (500). First, the center frequency of at least one filter of a duplex filter (10) is measured (502). Next, the difference between the measured center frequency and a desired center frequency is determined (504). And, third the duplex filter is tuned (506) by selectively removing a substantially planar layer of dielectric material for a top surface (14) of the filter (10), whereby the frequency characteristics are modified.
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申请公布号 |
US5528204(A) |
申请公布日期 |
1996.06.18 |
申请号 |
US19940235581 |
申请日期 |
1994.04.29 |
申请人 |
MOTOROLA, INC. |
发明人 |
HOANG, TRUC;VANGALA, REDDY R. |
分类号 |
H01P1/213;(IPC1-7):H01P1/213;H01P1/205 |
主分类号 |
H01P1/213 |
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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