Thin-film LCP amplitude compensated long time delay circuit

We present the design and development of an amplitude compensated long time delay circuit (LTD) in multilayer liquid crystal polymer (LCP) films. The design is implemented with MEMS switches. An LTD is built on a thin-film multilayer stack to provide a variety of transmission lines to offer different attenuation characteristics for amplitude compensation. True time delay (TTD) components produce 0 ps, 200 ps, 400 ps, and 600 ps relative delays. This part is intended to work over wide frequency ranges from DC to 10 GHz. Insertion loss mismatch between delays is measured to be less than ±0.4 dB across the band.