Duplexer IC Pin Mapping for Shared-Antenna Transfer Gain
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Solution Overview
Problem
In multi-band wireless communication devices, the use of separate antennas for transmit and receive channels is desirable for reducing antenna volume, but conventional duplexer designs with a shared filter port limit transfer gain and compatibility with various antenna and filter matching configurations.
Innovation Solution
A transceiver module and duplexer system with a duplexer integrated circuit (IC) that couples separate receive and transmit filter matching circuits to a single antenna matching circuit, enhancing transfer gain and maintaining compatibility with multiple antenna and filter configurations, while utilizing a specific I/O pin mapping to maintain duplexer functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If separate transmit and receive antennas are used, then antenna bandwidth can be reduced, but device complexity increases due to split duplexer requirements
Solution Approach 1:
The patent merges the transmit and receive antenna paths into a single shared antenna, eliminating the need for separate transmit and receive antennas. This is achieved through a duplexer design that allows simultaneous transmit and receive operations over the same antenna, thereby reducing the overall antenna volume while maintaining full duplex functionality without requiring complex split duplexer arrangements.
Solution Approach 2:
The shared antenna serves multiple functions by handling both transmit and receive operations across different frequency bands. The duplexer enables the single antenna to universally support full duplex, half duplex, and simultaneous transmit-receive modes, eliminating the need for mode-specific duplexer configurations and reducing overall system complexity.
2Device complexity
If a single shared antenna is used for transmit and receive channels, then device complexity is reduced, but transfer gain performance deteriorates
Solution Approach 1:
The patent implements separate filter matching circuits tailored specifically for transmit and receive operations, each optimized for its respective function. The transmit filter matching circuit is designed with parameters optimized for transmission, while the receive filter matching circuit is independently optimized for reception, allowing each path to achieve optimal transfer gain despite sharing a common antenna.
Solution Approach 2:
The duplexer is segmented into distinct transmit and receive paths, each with its own dedicated filter matching circuit. This segmentation allows independent optimization of transmit and receive performance characteristics, ensuring that the transmit path achieves maximum transfer gain for transmission while the receive path achieves maximum transfer gain for reception, both over the shared antenna.
3Reliability
If separate filter matching circuits are used for transmit and receive, then transfer gain is improved, but device complexity increases
Solution Approach 1:
The patent merges the transmit and receive filter matching circuits into a single integrated duplexer structure that shares common components and signal paths where possible. By combining the filter matching functions within a unified duplexer architecture rather than using completely separate circuits, the design achieves optimal transfer gain for both transmit and receive while minimizing the overall complexity increase.
Data Source
AI summary
A transceiver module and duplexer within a communication device supports a minimized antenna volume and enhances a transfer gain for transmit and receive channels. The duplexer is communicatively coupled to one of multiple antenna and filter matching configurations which include a first configuration that couples receive and transmit filter matching circuits to a single antenna matching circuit. When the duplexer is coupled to the first configuration, receive and transmit filters of the duplexer are respectively coupled to the receive filter matching circuit and the transmit filter matching circuit. As a result, the antenna matching circuit and the filter matching circuits collectively provide the enhanced transfer gain. The duplexer is placed within an integrated circuit (IC) package to provide a duplexer IC having a specific number of input/output (I/O) pins arranged in a pre-established I/O pin mapping to maintain duplexer functionality and provide compatibility with various antenna and filter matching configurations.