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1. 发明授权

US5881369A Dual mode transceiver 失效
标题翻译：双模收发器
公开(公告)号：US5881369A
公开(公告)日：1999-03-09
申请号：US675756
申请日：1996-07-03
申请人： Stuart James Dean , David William Park
发明人： Stuart James Dean , David William Park
IPC分类号： H04B1/00 , H04B1/40 , H04B1/44
CPC分类号： H04B1/0082 , H04B1/005 , H04B1/0057 , H04B1/406 , H04B1/006
摘要： A dual mode transceiver architecture suitable for adaptation in either a handset or a base station and capable of operating in both Frequency Division Duplex (FDD) mode or in Time Division Duplexing (TDD) mode is disclosed. Such a transceiver has an up conversion path capable of up converting an Intermediate Frequency (IF) to a Radio Frequency (RF) signal in either an upper band frequency range or a lower band frequency range. Also the transceiver has a down conversion path, used for receiving, for down converting a RF signal in either the upper band or lower band to a desirable IF frequency. The transceiver includes a switch array capable of switching the up conversion path to either the upper band port or the lower band port of a diplexer and the switch array also switches the upper band port and lower band port of the diplexer to the down conversion path depending on whether the transceiver is operating in TDD mode or FDD mode. Also, if in TDD mode, the switch array determines whether the transceiver is transmitting or receiving.
摘要翻译：公开了一种适用于手持机或基站中适应并且能够以频分双工（FDD）模式或时分双工（TDD）模式）工作的双模收发器体系结构。这样的收发器具有能够将中频（IF）上变换为高频段或低频区域中的射频（RF）信号的上变频路径。此外，收发器具有用于接收的下变频路径，用于将上段或下级频带中的RF信号下变频到期望的中频频率。收发器包括能够将上行转换路径切换到双工器的上带端口或下频带端口的交换机阵列，并且交换机阵列还将双工器的上频带端口和下频带端口切换到下行转换路径，取决于关于收发器是在TDD模式还是FDD模式下运行。而且，如果在TDD模式下，交换机阵列确定收发器是发送还是接收。

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