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<?Pub Dtl?>A fully integrated broadband multi-state reflectometer (MSR) covering both 2- and 16-GHz bands is developed using microelectromechanical systems and monolithic-microwave integrated-circuit technology for complex permittivity measurement of biological material. The MSR consists of a dual-band phase-locked loop, a power amplifier, a directional coupler, an impedance tuner, two RF power...
A planar-type open-ended coaxial probe with substrate integrated waveguide structure has been developed for broadband permittivity measurement. The proposed probe consists of a microstrip line, a shielded stripline, and a coaxial aperture. The shielded stripline was formed by placing via-hole arrays along the stripline to form a substrate integrated waveguide. To access the bandwidth of the proposed...
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