The Design of Wideband DC-35 GHz IF Modules for 78-113 GHz Receiver Array

Abstract

To facilitate simultaneous detection of the 78-113 GHz millimeter-wave electromagnetic spectra, compact DC-35 GHz IF modules have been designed where the down-converted signals will be divided and further transformed into four 8.7 GHz bands, thus suitable for fiber-optics signal transfer and digital-signal processing. This paper will detail the design methodology and related microwave circuits that constitute the wideband modules; measured results will also be presented. In additional to the intended radio-astronomical instrumentation, this work can be used in applications such as geographical remote sensing and human biological sensors.