发明名称 |
HIGH POWER FILTER, METHOD THEREIN AND RADIO TRANSMITTER INCLUDING THE FILTER |
摘要 |
A high-power superconducting filter of transmission line type is designed to have such a peak value of the operating voltage and such a characteristic impedance of the filter that the peak current in the filter is kept at a sufficiently low value so that non-linear effects induced by a high current density are negliblee for a proper operation of the filter. The filter (11) thereby obtains an improved power handling capacity. It is used in a radio transmitter circuit for band-pass filtering signals received from a power amplifier (10). Since the characteristic impedance cannot be given a standard value, impedance matching units such as transformers (15, 16) are connected at the input and output sides of the filter.
|
申请公布号 |
WO0189025(A1) |
申请公布日期 |
2001.11.22 |
申请号 |
WO2001SE01069 |
申请日期 |
2001.05.15 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL);ZHOU, SHU-ANG;MEDELIUS, HANNES |
发明人 |
ZHOU, SHU-ANG;MEDELIUS, HANNES |
分类号 |
H01P1/203;(IPC1-7):H01P1/203;H04B1/40 |
主分类号 |
H01P1/203 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|