Switchable Balanced Amplifier for Multi-Band Path Routing
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Solution Overview
Problem
Conventional balanced amplifiers require complex and lossy input and output path switching to support multiple applications, modes, and frequency bands, leading to increased size and complexity.
Innovation Solution
A switchable balanced amplifier with multiple, configurable independent input/output paths is achieved through switching networks coupled to the input and output quadrature couplers, allowing any input signal to be directed to any output port, with each port connected to specific circuitry optimized for different operating modes and frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional input and output path switching is used to support multiple applications, then the balanced amplifier can operate in multiple modes and frequency bands, but the circuit size and complexity increase
Solution Approach 1:
The balanced amplifier is designed with multiple input and output ports that can be configured through switching networks to support multiple applications, frequency bands, and operating modes. The same amplifier core circuit serves universal functions across different configurations, eliminating the need for separate amplifiers for each mode.
Solution Approach 2:
The input and output paths are segmented into multiple independent ports (first input port, second input port, first output port, second output port) with independent switching control. This segmentation allows flexible configuration of signal paths while maintaining a shared amplifier core, reducing overall circuit complexity.
2Adaptability or versatility
If conventional input and output path switching is used to support multiple applications, then the balanced amplifier can operate in multiple modes and frequency bands, but the circuit size increases
Solution Approach 1:
A single balanced amplifier core circuit is designed to universally support multiple frequency bands and operating modes through configurable input/output port assignments. This universal design eliminates the need for multiple separate amplifier circuits, significantly reducing the overall circuit area.
Solution Approach 2:
Multiple signal paths (first input path, second input path, first output path, second output path) are merged to share a common amplifier core circuit. By combining multiple functions into a single shared resource, the circuit size is minimized while maintaining support for multiple applications.
3Adaptability or versatility
If conventional path switching is used, then multiple applications can be supported, but signal loss increases
Solution Approach 1:
The switching networks are configured to dynamically select optimal signal paths based on the operating mode and frequency band. This dynamic configuration minimizes the number of switching operations required, thereby reducing cumulative signal loss while maintaining adaptability across multiple applications.
Data Source
AI summary
A switchable balanced amplifier having multiple, configurable independent input/output paths. Switching networks coupled to the input and/or output quadrature couplers of the balanced amplifier are used to configurably direct any of one or more input signals to any of one or more output ports. In one example, each output port is coupled to circuitry tailored to a specific type of input signal, operating protocol and/or operating frequency band.