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Phase Stability, Loss Stability and Shielding Effectiveness White Paper

When it comes to long-length microwave coaxial assemblies, their phase/loss stability and repeatability, as well as shielding effectiveness, have historically not been well documented. This is largely due to the low demand for these types of assemblies and lack of standardized testing procedures. Published by W. L. Gore & Associates, White Paper: Phase Stability, Loss Stability and Shielding Effectiveness of Long Length provides some much-needed insights into this type of equipment to help operators, engineers and manufacturers find the right extended-length solutions.

Improve 5G Testing White paper

Selecting a reliable, high-performing microwave/RF cable assembly will eliminate many of the common problems experienced with test systems. Learn more from the white paper.

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Performance Over Time

A recent study showed that users of microwave/RF cable assemblies expect high-quality, long-lasting performance; however, more than 75 percent of these users are replacing their assemblies frequently, with the most common cause of failure identified as damage during installation or operation. Depending on the frequency, the direct cost for replacing cable assemblies on a single piece of equipment can reach $250,000 over the life of the system — and this does not include the indirect costs such as delayed production schedules, bad products, or retesting and calibration.

Resulting from a lack of strict adherence to IEEE287 General Precision/Laboratory Precision Connector specifi cations (GPC / LPC), the OSP connector type is not generally considered to be suitable for calibration kit use.

The environments in which microwave cable assemblies are being used today are becoming more challenging with exposure to such conditions as extreme temperatures, chemicals, abrasion, and flexing. Additional challenges include the need for smaller, lighter packaging for cable systems that last longer and cost less.

Measurement uncertainty has a direct impact on the reliability of test instruments. To determine if there is a quantifiable difference in measurement uncertainty between the TDR and VNA, W. L. Gore & Associates performed a series of experiments, initially testing six cable assemblies in controlled conditions on each instrument.

提升5G测试效能

选择可靠、高性能的微波/射频电缆组件,能够解决测试系统经常遇到的很多问题。例如,电缆组件性能差,会导致设备生产延迟、故障排除和维护频率上升、频繁校准、数据完整性问题、额外的重新测试、更高的总拥有成本、测试系统性能受损以及测试产量降低。阅读5G白皮书,了解更多详情。

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Improve 5G Testing White paper

信頼性の高いマイクロウェーブ/RFケーブルアセンブリは、測定時に発生していた問題を解決します。詳しくは資料をご覧ください。

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 長期にわたるパフォーマンス

最近の研究では、マイクロウェーブ/RFケーブルアセン ブリのユーザーは、製品に対して高品質、長寿命を期 待しながら、75%を超えるユーザーが、もっとも一般的 な理由である導入中または使用中の損傷で頻繁にア センブリを交換していることが示されました。頻度にも よりますが、交換による直接費用はシステムの寿命を 通じて$250,000にも達し、しかもこの金額には生産 遅延や不良品、再試験や再構成などの間接費用は含 まれていません。

W. L. Gore & Associates(ゴア)は、類似の仕様で高耐 久性構造を持つとされる複数の18GHzマイクロウェー ブ/RFケーブルアセンブリについて、長期にわたる耐久 性と性能の評価を試みました。 この試験で明らかになったことは、新品のマイクロウェ ーブ/RFケーブルアセンブリの性能は、必ずしもシステ ムの寿命を通じて信頼できる性能を保証するわけで はない、ということです。実際の使用状況に耐えられる ようにテストされた耐久性に優れた構造のケーブルア センブリを選定することが、交換コストを削減するカギ であり、また長期にわたり信頼性を確実にする唯一の 方法となります。