PE51113-2 Performance Report: Measured Specs & Gain
Key Operating Bands & Nominal Specs
Nominal operating bands are listed below with typical specification-sheet claims for on-axis gain and polarization. Measured data should be compared to these envelopes with identical mounting and cable conditions.
| Frequency Band | Nominal dBi | Polarization |
|---|---|---|
| Band A: 700–900 MHz | 2–4 dBi | Linear |
| Band B: 1700–2700 MHz | 3–6 dBi | Linear |
| Band C: 3300–4200 MHz | 4–7 dBi | Linear / Dual |
Typical Applications & Integration Constraints
Common deployments include vehicle roof mounts, fixed pole mounts, and indoor ceiling installs. Measured gain is sensitive to ground-plane size, mount height, nearby metallic structures, and connector/cable loss. Record mechanical geometry and cable type when reporting measured performance so results are reproducible.
Test Methodology: How Measured Specs & Gain were Captured
Lab Setup & Instrumentation Checklist
Test rigs used a calibrated VNA with full two-port SOLT calibration, anechoic range, and low-loss test cables. The PE51113-2 should be measured with known cable loss subtracted; include power meter cross-checks. Repeatability requires torque-controlled connectors.
Measurement Procedures
Use frequency resolution of 101–401 points for full-band plots. Average multiple sweeps to reduce noise. Compute realized gain by referencing a calibrated antenna; report units in dBi and VSWR in dB. Provide 95% confidence ranges for repeated runs.
Measured Specs & Gain Results
Frequency Sweep Results: Gain, VSWR, and Efficiency
Present peak gain and VSWR minima/maxima per band. Use clear captions: "Gain vs. frequency — on-axis, roof-mount, cable loss removed." Label any notch or ripple regions and correlate them to likely causes.
Key Measured Values (Lab Data Reference):Peak Gain (Band B): ____ dBi Band-avg Gain (Band A): ____ dBi VSWR Min/Max (Band C): ____ Efficiency: ____ %
Radiation Patterns & Polarization Behavior
Provide azimuth and elevation cuts at representative center frequencies. Pattern asymmetry or nulls often explain measured gain roll-off; map pattern anomalies back to mounting geometry and nearby scatterers.
Comparative Analysis & Interpretation
Performance vs. Claims
Directly compare datasheet entries to measured values. Where gain falls below nominal, quantify the delta in dB and list plausible causes: manufacturing tolerance, connector mismatch, or test-fixture interactions.
System Design Implications
Translate gain deltas into system impacts: a 1 dB shortfall reduces link margin by 1 dB — ≈20% reduction in received power. Use formula: Range ∝ 10^(ΔG/20) for free-space range change estimations.
Integration Checklist & Actionable Recommendations
Pre-deployment QA & Verification Steps
| Metric | Measured | Threshold |
|---|---|---|
| Band-average Gain | ____ dBi | >= Lab avg −1.5 dB |
| VSWR (max) | ____ | |
| Cable Loss | ____ dB |
Tuning, Mitigation & Retest
Mitigations include repositioning the antenna, adding ground-plane augmentation, and applying ferrites for common-mode issues. If post-mitigation gains remain out of tolerance, request retest with serialized logs.
Summary
Key takeaways for field performance and link-budget updates:
- ✔ Document mounting geometry, cable type, and connectors for each measurement to ensure reproducibility.
- ✔ Report measured gain and VSWR with confidence intervals using calibrated reference antennas.
- ✔ Apply link-budget conversions: a 1 dB gain change maps directly to 1 dB in link margin.
- ✔ Establish acceptance thresholds and require retest when units deviate beyond lab limits.
FAQ
How should measured gain for the PE51113-2 be reported? +
What VSWR thresholds should be used for field acceptance? +
When is on-site retest required after installation? +
Ready for Deployment?
Request serialized test data or schedule site-specific sweeps today.
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