| 发明名称 |
TUNABLE FILTER OFF-STATES FOR NOISE REJECTION |
| 摘要 |
Methods and apparatus, including computer program products, are provided for tunable filters and/or front-ends. In one aspect there is provided an apparatus. The apparatus may a first band filter; a second tunable band filter; and a radio frequency switch coupled to at least the first band filter and the second tunable band filter, wherein the radio frequency switch is configured to switch between at least the first band filter and the second tunable band filter. Related apparatus, systems, methods, and articles are also described. |
| 申请公布号 |
US2016336631(A1) |
申请公布日期 |
2016.11.17 |
| 申请号 |
US201514714122 |
申请日期 |
2015.05.15 |
| 申请人 |
Nokia Technologies Oy |
发明人 |
Lähteensuo Toni H.;Francois Brecht;Larsen Niels Bonne;Kong Lingkai |
| 分类号 |
H03H7/01 |
主分类号 |
H03H7/01 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus comprising:
a first band filter; a second tunable band filter; a radio frequency switch coupled to at least the first band filter and the second tunable band filter, wherein the radio frequency switch is configured to switch between at least the first band filter and the second tunable band filter; and a controller configured to at least:
initiate selection, at the radio frequency switch, of the first band filter to enable transmission through the radio frequency switch, the first band filter, and an antenna,determine whether a first pass band of the first band filter includes at least a partial overlap in frequency with a second pass band of the second tunable band filter, andinitiate tuning of the second tunable band filter to adjust the second pass band of the second tunable band filter to enable suppression of a leakage signal, when the first pass band includes at least the partial overlap in frequency with the second pass band. |
| 地址 |
Espoo FI |
