Development of Practical Terahertz Packages for Resonant Tunneling Diode Oscillators and Detectors

Abstract

The two types of practical plastic packages are proposed in this study for practical terahertz applications by using a plastic leaded chip carrier (PLCC), and also by embedding a parabolic antenna. A resonant tunneling diode (RTD) oscillator onto the top surface of which a dipole antenna is integrated is mounted in the packages to measure the radiation characteristics. The antenna gain is improved by 5 dB for the PLCC, while 17 dB for the parabolic-antenna type, compared to that of the RTD bare chip. The team also fabricates terahertz-imaging modules by utilizing PLCC-packaged RTD's as an oscillator and a detector. A perspective image obtained by line-scan with 1.25-mm pixel pitch elucidates the usefulness of the package.