Integrated Resonator Antenna Filter Divider Circuit
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Solution Overview
Problem
Existing radio receiver designs suffer from signal attenuation and increased noise figure due to losses in the divider and phase shifter components of the low-noise amplifier unit, which complicates impedance matching and increases the noise figure of the amplifier unit.
Innovation Solution
The divider circuit of the low-noise amplifier unit is physically integrated into a resonator-type antenna filter, eliminating the need for a transmission line between the filter and divider and reducing dielectric losses by using the coupling wire as part of the divider, employing a theoretically lossless Wilkinson divider structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate transmission line and divider circuit are used between the antenna filter and amplifier, then impedance matching and signal distribution are achieved, but signal attenuation increases and noise figure deteriorates
Solution Approach 1:
The patent combines the antenna filter and divider circuit into a single integrated structure. The filter housing serves dual purposes: as the filter enclosure and as part of the divider circuit ground reference. This integration eliminates separate transmission lines and reduces the number of discrete components, thereby minimizing signal attenuation and improving noise figure performance.
Solution Approach 2:
The filter housing is designed to serve multiple functions simultaneously: it provides mechanical enclosure for the filter, establishes ground references for the divider circuit, and acts as part of the signal path. This multi-functionality reduces the need for additional separate components and transmission lines, reducing overall signal loss.
2Adaptability or versatility
If additional components (divider, phase shifter, wiring) are added to the amplifier unit, then impedance matching and signal processing capabilities are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the filter and divider into a single integrated assembly where the filter housing forms part of the divider circuit structure. This reduces the number of discrete components and interconnections required, simplifying the overall amplifier unit structure while maintaining impedance matching capabilities.
Solution Approach 2:
The filter housing is designed to serve multiple functions: mechanical enclosure, ground reference establishment, and signal path formation. This multi-functionality reduces the need for additional separate components, thereby reducing device complexity and manufacturing cost.
Data Source
AI summary
An arrangement for dividing the output signal of the antenna filter of a radio receiver to two different paths, such as two parallel low-noise amplifier branches of a base station. The divider circuit is physically integrated into a resonator-type antenna filter (RXF). This takes place by placing some conductors (332, 333) of the divider inside some conductive part of the filter structure or the resonator cavity and by using the coupling conductor (331) of the output resonator as part of the input line of the divider at the same time. As the divider is used a Wilkinson divider. Due to the arrangement, a transmission line between the antenna filter and the divider becomes unnecessary, and the dielectric losses of the divider are reduced as compared to the prior art, in which case correspondingly inferior noise qualities can be allowed for low-noise amplifiers.