Integrated Waveguide Transmit-Receive Isolation and Filtering
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Solution Overview
Problem
Existing microwave communication systems, such as those using fixed service satellite systems, face issues with susceptibility to water leakage, high manufacturing costs, and large, bulky designs due to the use of discrete waveguide devices like ortho-mode transducers and diplexers that are exposed to the elements.
Innovation Solution
An integrated waveguide transmit-receive isolation and filtering device is designed, where the transmit-receive isolation assembly is metal die-cast within the transmitter housing, eliminating the need for external components and reducing the number of parts, thereby minimizing manufacturing costs and vulnerability to weather-related issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discrete waveguide devices (ortho-mode transducer and diplexer) are used as separate external modules, then signal isolation and filtering functions are achieved, but the apparatus becomes susceptible to water leakage and has higher manufacturing costs
Solution Approach 1:
The patent combines the ortho-mode transducer and diplexer into a single integrated waveguide device. The housing contains both functional components internally, with the ortho-mode transducer receiving/transmitting signals and the diplexer performing frequency separation, all within one sealed unit that eliminates external exposure and potential water leakage points.
2Ease of manufacture
If discrete waveguide devices are used as stand-alone components, then signal processing functions are maintained, but manufacturing costs and volume increase
Solution Approach 1:
The patent integrates multiple waveguide components (ortho-mode transducer, diplexer with filters) into a single housing structure. This consolidation reduces the total number of separate parts, simplifies assembly, and lowers manufacturing costs while maintaining all necessary signal processing functions within one compact unit.
3Weight of moving object
If multiple separate waveguide components are assembled externally, then functional requirements are met, but the overall volume and mass of the radio increase
Solution Approach 1:
The patent employs a nested arrangement where the diplexer and its filters are positioned within the housing that also contains the ortho-mode transducer. This nested configuration allows compact packaging of multiple functional components, reducing both the overall volume and mass of the radio while maintaining all necessary signal isolation and filtering capabilities.
Data Source
AI summary
A radio (700) is provided for transmit-receive isolation and filtering (INTRIFWA) that are sealed and/or integrally built-in a housing of a transmitter, which can be used in microwave communication systems, including satellite based communications systems and terrestrial based microwave communication systems.