Directional Coupler Specifications with Ultra-Wideband Performance Metrics

A prototype three-section directional coupler was designed, fabricated, and measured, achieving an ultra-wideband response from 0.75 GHz to 3.75 GHz. The dataset, authored by Shrawan K. Patel and last updated in May 2026, presents specifications and performance metrics for couplers with improved coupling and directivity. It includes calculated, simulated, and measured responses validating the proposed design.

Use Cases

• Benchmarking ultra-wideband coupler performance based on coupling, bandwidth, and directivity metrics mentioned in the description
• Validating electromagnetic simulation models based on the provided calculated, simulated, and measured response data
• Designing microstrip-based couplers for communication systems based on the described short-ended coupled-line structure
• Analyzing the relationship between circuit size and performance based on the maximum circuit size of 0.067λ₀²

Strengths

• Includes experimental results for a prototype with a 5:1 bandwidth (0.75 GHz to 3.75 GHz) and coupling ripple of 8.3 ± 1.4 dB
• Provides specific performance metrics: return loss > 16 dB, isolation > 20 dB, phase difference of 90 ± 4°, and directivity > 30 dB
• Compares the proposed design to conventional structures, showing an approximate 1.2 dB improvement in coupling

Limitations

• Row count is unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download
• The dataset is very small (5.5 KB), indicating limited scope

Provenance

Source

Shrawan K. Patel via figshare

Collection Method

Design, fabrication, and measurement of a prototype three-section directional coupler.

Freshness

Last updated 2026-05-08 17:25:34; freshness should be verified