en.Wedoany.com Reported - U.S. RF and microwave cable solution provider Micro-Coax officially disclosed details of its AccuPhase 70 series test cable assemblies to the industry on May 18. The product features a maximum operating frequency of 70 GHz and utilizes ARACON metal-clad fiber braided shielding technology. The AccuPhase series is specifically designed for precision measurement environments such as laboratories, production lines, and flight lines, aiming to address the long-standing pain points of traditional armored test cables being too bulky, overly rigid, and difficult to adapt to high-density test layouts. Micro-Coax had already launched the full AccuPhase product line in February 2026, covering four frequency grades: 26.5 GHz, 40 GHz, 50 GHz, and 70 GHz, providing a complete solution for Vector Network Analyzer port extensions, scalar analyzers, and system-level RF connections in R&D, certification, and production environments.
The design core of the AccuPhase 70 lies in its ARACON braided outer shielding layer, which Micro-Coax describes as a unique technical approach within this category of cable assemblies. ARACON is a braided material composed of metal-clad aramid fibers, combining the conductivity of metal with the lightweight and high-strength characteristics of high-performance fibers, achieving a weight reduction of up to 80% compared to traditional copper braiding solutions. This shielding layer is used in conjunction with a helically wrapped silver-plated copper outer conductor and an ultra-low-density PTFE dielectric, collectively endowing the cable assembly with the ability to maintain measurement integrity under conditions of repeated flexing, temperature variations, and prolonged use. This "internally ruggedized" flexible coaxial structure minimizes amplitude and phase drift caused by physical movement and external environmental factors from a design perspective, helping engineers maintain high-fidelity measurements without the need for frequent recalibration.
The AccuPhase 70 features a characteristic impedance of 50 ohms, a velocity of propagation of 80%, and shielding effectiveness of no less than 90 dB in the 1 to 18 GHz frequency range. The cable has an outer diameter of 0.186 inches (approximately 4.72 mm), a unit weight not exceeding 17.3 grams per foot (approximately 56.8 grams per meter), and a minimum static bend radius of 1 inch (approximately 25.40 mm), supporting flexible deployment in high-density, confined spaces. In terms of mechanical durability, the assembly boasts a rated flex life of 200,000 cycles. The silver-plated copper-clad steel center conductor complies with ASTM B-501 standards, and the silver-plated copper outer conductor complies with ASTM B-298 standards. The operating temperature range spans from minus 65 degrees Celsius to plus 165 degrees Celsius. The assembly also meets MIL-DTL-17 Type IX specification requirements and RoHS compliance standards, with insertion loss stability controlled within a maximum variation of 5%, and a dielectric withstanding voltage of 5000 VRMS. For connector options, the AccuPhase 70 supports 1.85 mm规格, available in male/female polarities and a straight geometric form.
Micro-Coax, a subsidiary of Amphenol Microwave, is headquartered in Pottstown, Pennsylvania, USA. It has long provided high-reliability RF and microwave interconnect solutions for the defense, satellite, test & measurement, and industrial sectors, with product lines including UTiFLEX flexible microwave cable assemblies, M-FLEX cable assemblies, and ARACON metal-clad fiber brands. AccuPhase product series Application Engineer Philip Lenk stated in the February product announcement that the development goal of this product family was to eliminate one of the most significant sources of measurement uncertainty in RF testing—measurement deviation introduced by cables. By focusing on internal ruggedization, phase stability, and usability in real-world scenarios, the team created a test assembly that engineers can rely on daily, whether on the benchtop, production line, or flight line. At the upcoming IEEE MTT-S International Microwave Symposium IMS2026, to be held from June 9 to 11 at the Thomas B. Menino Convention and Exhibition Center in Boston, Micro-Coax will exhibit as one of Amphenol Microwave's six RF business units at Booth 16054. The same booth will also feature sister brands such as Times Microwave Systems, SV Microwave, Q Microwave, XMA Corp., and Amphenol Printed Circuits, where the full AccuPhase product line is expected to undergo industry scrutiny on-site.
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