Ultra-Stable Microwave Coax Cables Match Up With Multiple Cutoffs

Aug. 23, 2004

The SLA series microwave coaxial cables from Semflex are specifically matched to the maximum frequency ranges of N, SMA, 2.29-mm, 1.85-mm, and other popular connectors. These double-shielded cables build on the company's LA290 cables. Different...

Roger Allan

For example, the 50-(omega) cables have a low loss of 19.5 dB/ft (at 100 ft), low capacitance of 25 pF/ft (24 pF/ft for the SLA18), and a breakdown-voltage rating up to 15 kV. Shielding effectiveness is greater than 100 dB. This performance suits the cables for instrument-grade applications like phase-network analyzer/vector-network analyzer (PNA/VNA) and phase-critical functions, including electronic countermeasures (ECMs) and radar.

Silver-plated inner and outer conductors and microporous dielectric polytetrafluoroethylene (PTFE) material provide the cables' low attenuation. Low-loss, phase-stability, and shielding effectiveness characteristics result from combining a helically served flat braid with a second shield that provides a minimum round braid coverage of 97%.

Available from stock, SLA series cables can be delivered on bulk reels. Pricing ranges from $3.89/ft to $13.26/ft, based on size and quantity.

Semflex Inc.www.semflex.com (800) 778-4401

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.