Issue link: https://iconnect007.uberflip.com/i/271756
March 2014 • The PCB Magazine 59 MAKE THE MOST OF HIGH-FREqUENCY LAMINATES WITH RESISTIVE FOIL continues Figure 2: common ptFe-based high-frequency laminate with planar resistors formed of resistive film show the tight resistor tolerances that are possible. Figure 3: plots comparing the insertion loss of similar microstrip circuits fabricated on ptFe-based laminates with and without planar resistors.