This paper presents the design of a millimeter-wave Fourier transform spectrometer based on microstrip transmission line circuits and PIN diode switches. The working frequency for this design is in the range of 40-70 GHz which is potentially useful for measurement of absorption spectra of biological materials. Simulation results demonstrate the feasibility of this design and indicate that a frequency resolution of 6 GHz is achievable.
This paper presents the concept of an integrated millimeter-wave Fourier transform spectrometer. It is proposed to integrate the interferometer through the use of planar transmission line circuits onto a single chip. The splitting and combining of the broadband signal can be realized through the use of coupled-line couplers and
the sliding reflector can be realized with distributed RF-MEMS transmission lines. Calculations are given to demonstrate the feasibility of this concept.