发明名称 |
Telecommunication system base station with band-pass filter for isolating FDD and TDD channels used for transmission and reception |
摘要 |
<p>The base station has a frequency band allocated for operation in a Time Division Duplex (TDD) mode and used for transmission and reception. Another frequency band is allocated for reception in a Frequency Division Duplex (FDD) mode. Yet another frequency band is provided for transmission in a FDD mode. The latter, frequency band for FDD reception comprises a number of channels, at least one of them to be assigned a TDD mode. The base station comprises at least one band-pass filter (20,22) of superconductor type and with steep slopes. The filter is provided in a channel(s) of FDD mode which is/are not assigned for operation in a TDD mode. The filter has a quality factor of at least 50 000 and at least 10 poles.</p> |
申请公布号 |
FR2805702(A1) |
申请公布日期 |
2001.08.31 |
申请号 |
FR20000002328 |
申请日期 |
2000.02.24 |
申请人 |
ALCATEL |
发明人 |
DOLL ANDRE;MICHEL JEAN PHILIPPE;GABRIAGUES JEAN MICHEL;GOURGUE FREDERIC |
分类号 |
H04W88/08;(IPC1-7):H04Q7/30 |
主分类号 |
H04W88/08 |
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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