3 to 5 GHz compact microwave delay line

Recent advances in low-cost automated, planar microcoax interconnection technology have made possible dramatic reductions in the size and weight of microwave frequency delay lines. This technology has been used in the design and implementation of a 3-5-GHz, 250-ns microwave delay line having linear and spurious-free third-order dynamic ranges of 70 and 50 dB, respectively. The delay lines are housed in a fully EMI (electromagnetic interference) shielded enclosure and achieved a 30 to 1 reduction in volume and a 3 to 1 reduction in weight compared to conventional coaxial delay lines.<>