| 摘要 |
The present invention describes a transmitter/receiver architecture that uses a Weaver architecture in conjunction with digitally controlled adder/subtractor components to insert/extract a signal into/from the multi-channel system. In the transmitter, the selection of the band select bit causes the up/downconverted IF baseband I and Q signals to insert/extract on either side of an RF LO signal. In addition, the image of the first LO is eliminated while the desired signal is enhanced after passing through this new architecture. The invention also adds an RSSI circuit to the MBOA Weaver architecture receiver architecture to detect whether an 802.11 WLAN signal is interfering with the desired UWB signal. If so, the system is designed to detect this interference and jump to a new frequency range to avoid this interference. This invention focuses on devices that operate over the entire UWB band including the newly formed 60 GHz UWB band system.
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