Rectangular Waveguide RF Transition for In-Place Component Measurement
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Solution Overview
Problem
Existing RF waveguides require disassembly and reassembly for measurement, leading to alignment changes and increased reflection and transmission loss, which affects the performance and accuracy of RF systems, and existing solutions like mechanical waveguide switches provide limited solutions.
Innovation Solution
A waveguide with RF port input transition featuring switchable isolator, impedance matching, and radiator ports, allowing for measurement mode operation without disassembling the RF system, using an RF isolator, impedance matcher, and radiator for accurate RF characteristic determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the waveguide is disassembled and reassembled for measurement, then RF component measurement can be performed, but alignment changes occur causing increased reflection and transmission loss
Solution Approach 1:
The waveguide is divided into a measurement section and a transmission section. The measurement section includes a removable measurement device with N-type or SMA-type input ports that can be detached without affecting the transmission section. This segmentation allows measurement operations to be performed on one section while preserving the alignment and performance of the other section.
Solution Approach 2:
A measurement device serves as an intermediary component between the RF system and measurement instruments. This device includes transition structures (coaxial-to-waveguide transitions) that enable connection to standard measurement equipment without requiring disassembly of the main waveguide transmission path. The intermediary measurement device absorbs the measurement function while leaving the transmission system intact.
2Measurement precision
If the waveguide is disassembled and reassembled for measurement, then RF component measurement can be performed, but time and labor required for disassembly and installation increase
Solution Approach 1:
The waveguide system is segmented into permanent transmission sections and a removable measurement section. The measurement section can be quickly attached or detached without affecting the main transmission path, significantly reducing the time and labor required for measurement operations compared to complete disassembly and reassembly.
Solution Approach 2:
The measurement device is pre-configured with appropriate transition structures and coupling mechanisms that enable quick connection to the waveguide. This preliminary preparation of the measurement device allows for rapid deployment and removal without requiring complex disassembly procedures of the main RF system.
3Adaptability or versatility
If a mechanical waveguide switch with multiple input/output ports is used, then measurement capability is provided, but the solution remains limited
Solution Approach 1:
The measurement device incorporates multiple functional elements including N-type and SMA-type input ports, coaxial-to-waveguide transition structures, and removable coupling mechanisms. This multi-functional design allows the same device to interface with various measurement instruments and waveguide configurations, providing universal measurement capability without requiring multiple specialized components.
Data Source
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AI summary
Disclosed herein is a waveguide with an RF port input transition. The waveguide includes: a tubular rectangular body having openings formed at opposite sides thereof, each of the openings having a flange therearound; multiple isolator ports formed at predetermined intervals in one wall of the rectangular body, the isolator ports each being switchable between open and closed states; multiple impedance matching ports formed at predetermined intervals in another wall of the rectangular body opposite the one wall, the impedance matching ports each being switchable between open and closed states; and a radiator port formed at a center of the one wall of the rectangular body.