| 摘要 |
Provided is a multiband wireless apparatus that, even if the number of supported frequency bands increases, suppresses increase in the number of components, and completes cell search within a specified time. In a multiband wireless apparatus (1), a reception channel to which a current reception channel is going to be next switched is set in advance for one of a tunable duplexer (13) and a reception dedicated tunable filter (14) that is not connected to an antenna. An antenna switch (15), in a normal transmission/reception mode, connects the antenna to the tunable duplexer (13), and in a compressed mode, switches the connection of the antenna between the tunable duplexer (13) and the reception dedicated tunable filter (14). |
| 主权项 |
1. A multiband wireless apparatus supporting a plurality of frequency bands, the multiband wireless apparatus comprising:
a radio frequency integrated circuit (RFIC) for generating a transmission signal and processing a reception signal; a wideband power amplifier (PA) for amplifying the transmission signal; a tunable duplexer for outputting the transmission signal amplified by the wideband PA to an antenna, and for outputting the reception signal received via the antenna to the RFIC; a reception dedicated tunable filter for outputting the reception signal received via the antenna to the RFIC; and an antenna switch for alternately switching a connection of the antenna between the tunable duplexer and the reception dedicated tunable filter, so as to change receiving paths of the multiband wireless apparatus for receiving the reception signal, wherein a next reception channel is set in advance for one of the tunable duplexer and the reception dedicated tunable filter that is not connected to the antenna, and the antenna switch in a normal transmission/reception mode, connects the antenna to the tunable duplexer, and in a compressed mode, alternately switches the connection of the antenna between the tunable duplexer and the reception dedicated tunable filter, so as to change the receiving paths of the multiband wireless apparatus for receiving the reception signal, wherein the receiving paths of the multiband wireless apparatus include a first receiving path and a second receiving path, wherein the first receiving path includes the tunable duplexer so as to connect the antenna to the RFIC via the tunable duplexer, wherein the second receiving path includes the reception dedicated tunable filter so as to connect the antenna to the RFIC via the reception dedicated tunable filter, wherein, when the switch forms the first path to connect the tunable duplexer to the antenna, the second path is not formed and the reception dedicated tunable filter is not connected to the antenna, wherein, when the switch forms the second path to connect the reception dedicated tunable filter to the antenna, the first path is not formed and the tunable duplexer is not connected to the antenna, wherein the multiband wireless apparatus includes a plurality of reception channels, wherein two or more reception channels of the plurality of reception channels are connected to the tunable duplexer, wherein two or more reception channels of the plurality of reception channels are connected to the reception dedicated tunable filter, and wherein the next reception channel, which is set in advance for the one of the tunable duplexer and the reception dedicated tunable filter that is not connected to the antenna according to a state of the antenna switch, is one of the two reception channels connected to the one of the tunable duplexer and the reception dedicated tunable filter. |
