Candidate Frequency Bands

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This page discusses considerations for frequency band choice given atmospheric opacity and RF design considerations

Figure 1 shows a set of possible bands where multiple bands have been placed in the f < 60 GHz and 200 < f < 300 GHz atmospheric windows, and alternate "stagger" bands are also shown. Design and simulations by Aritoki Suzuki and Ari Cukierman (UCB).

TokiFrequency.png (Figure 1. Band candidates with staggered bands in the f < 60 GHz and 200 < f < 300 GHz atmospheric window)

In Figure 1, the 90 and 150 GHz atmospheric windows are shown with a single band. It is possible to split the these two bands provided that a higher order filter is used which in turn requires low loss transmission lines. Figure 2, shows a design for a split 150 GHz atmospheric band.

Split bands.png (Figure 2. A split band configuration for the 150 GHz atmospheric window. This design uses a 7-pole bandpass filter and this simulation uses microstrip with SixNy dielectric constant assuming measured loss tangent)

Exact bands definitions are in the PDF linked below. The first set are all the bands, the second and third sets labelled "A" represent two staggered array configurations and the last set is a non-staggered configuration.

File:Frequency Bands.pdf