Wideband Impedance Converter Circuit for Compact RF Dividers
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Solution Overview
Problem
Conventional divider and combiners for communication apparatuses face challenges in achieving a wider signal bandwidth without increasing size, which is necessary for supporting multiple wireless communication and broadcasting systems.
Innovation Solution
The electronic component employs a circuit configuration with complex conjugate relationships between circuits, utilizing inductors and capacitors to achieve impedance matching and signal absorption, allowing for a wider frequency band operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multi-staging is used to achieve a wider band, then the frequency band coverage is improved, but the size of the divider and combiner increases
Solution Approach 1:
The patent changes the circuit parameters by introducing a complex conjugate relationship between the first circuit (characteristic impedance converter) and the second circuit (signal absorbing circuit). Specifically, the impedance parameters of the two circuits are made conjugate to each other, which enables wideband operation without requiring multiple cascaded stages, thus avoiding size increase while achieving wider frequency band coverage
Solution Approach 2:
The patent employs asymmetric circuit configuration where the signal absorbing circuit has a complex conjugate impedance relationship with the characteristic impedance converter circuit. This asymmetric design allows the circuit to achieve wideband matching and signal absorption characteristics that are not obtainable through symmetric conventional designs, enabling wide frequency band operation in a compact single-stage structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables the electronic component to operate in a wide frequency band, enhancing the performance of communication apparatuses by supporting multiple wireless communication and broadcasting systems without increasing size.
Implementation Method 1
a first circuit that is a characteristic impedance converter circuit provided between the first input/output port and the second input/output port
Implementation Method 2
a second circuit that is a characteristic impedance converter circuit provided between the first input/output port and the third input/output port
Implementation Method 3
a third circuit provided between the second input/output port and the third input/output port, the third circuit having a circuit configuration where a complex conjugate relationship is made with each of the first and second circuits
Data Source
AI summary
An electronic component includes a first input/output port, a second input/output port, a third input/output port, a first circuit that is a characteristic impedance converter circuit provided between the first input/output port and the second input/output port, a second circuit that is a characteristic impedance converter circuit provided between the first input/output port and the third input/output port, and a third circuit provided between the second input/output port and the third input/output port, the third circuit having a circuit configuration where a complex conjugate relationship is made with each of the first and second circuits.