Multi-Frequency Transceiver Multiplexer Split for Lower Insertion Loss
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The design of multiplexers in multi-frequency transceivers is challenging due to the integration of receiving and transmitting in the same and different frequency bands, requiring high separation and causing difficulties in filter suppression and insertion loss.
Innovation Solution
The multi-frequency transceiver separates receiving and transmitting signals using different multiplexers, each configured to transmit or receive signals in specific frequency bands, reducing the impact of neighboring frequency bands and minimizing intermodulation requirements on the antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If receiving and transmitting in the same frequency band and different frequency bands are integrated using a multiplexer, then multi-frequency transceiving function is achieved, but the requirement for separation between receiving and transmitting becomes high, causing great difficulty in multiplexer design
Solution Approach 1:
The patent divides the transceiving system into separate transmitting and receiving paths, each handled by dedicated multiplexers. The transmitting multiplexer routes signals for transmission across multiple frequency bands, while receiving multiplexers handle received signals from different bands. This segmentation eliminates the need for a single complex multiplexer to handle both transmitting and receiving, thereby reducing design difficulty while maintaining multi-frequency capability.
2Adaptability or versatility
If a multiplexer integrates receiving and transmitting in multiple frequency bands, then signal routing for all bands is achieved, but filter suppression requirements increase and insertion loss increases
Solution Approach 1:
The patent separates the signal routing into dedicated transmitting and receiving multiplexers. Each multiplexer is optimized for its specific function, allowing for better filter design with lower suppression requirements and reduced insertion loss. The transmitting multiplexer focuses on transmission paths while receiving multiplexers focus on reception paths, eliminating the need for high isolation between transmit and receive bands in a single device.
3Device complexity
If receiving and transmitting are integrated in the same multiplexer, then device count is reduced, but intermodulation requirements on the antenna increase
Solution Approach 1:
The patent implements separate transmitting and receiving multiplexers to prevent intermodulation interference. By physically separating the transmit and receive signal paths through different multiplexing devices, the system eliminates the intermodulation products that would occur if both transmit and receive signals passed through the same multiplexer. This segmentation isolates the harmful intermodulation effects to individual multiplexers where they can be managed separately.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The present invention relates to the field of wireless communications, and in particular, to a multi-frequency transceiver and a base station, where the multi-frequency transceiver is connected to an antenna, and includes: at least one transmit multiplexer, where each transmit multiplexer includes multiple transmit paths, and each transmit path is used to transmit one frequency band by using the antenna; and at least one receive multiplexer, where each receive multiplexer includes multiple receive paths, and each receive path is used to receive one frequency band by using the antenna. According to embodiments of the present invention, an interval between a signal receiving channel and a signal transmitting channel that are of a single multiplexer is increased, and a requirement for suppression of a filter of the multiplexer is reduced, which facilitates filter miniaturization and reduces an insertion loss.