Coupler Captures Monitor Signals

Sept. 5, 2012

Low loss and wide bandwidth are two desirable features in a directional coupler intended for signal-monitoring purposes, and those are two of the strong traits of the new model SYDC-10-42HP+ directional coupler from Mini-Circuits. It is a 10-dB coupler with coupling flat within ±0.3 dB from 10 to 400 MHz. The mainline loss is only 0.3 dB above the 0.45-dB theoretical minimum. The directivity is typically 32 dB at 10 MHz, 18 dB at 250 MHz, and 12 dB at 400 MHz. The input and output return loss is typically 22 dB. The compact directional coupler measures only 0.5 x 0.6 x 0.4 in., but can handle signal levels as high as 16 W without damage.

About the Author

Jack Browne

Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.