Trace And Cable Losses; Figure 13 - Coplanar Waveguide - Globalstar ST150M User Manual

9150-0125-01 R-1

5.7 TRACE AND CABLE LOSSES

The Antenna port (Pin 32) is designed to interface to a 50 Ohm antenna. This connection should feed to the antenna by means
of a 50 Ohm impedance trace on the circuit board. The following example impedance calculation is for a co-planar waveguide
trace on the top layer of a standard 0.063" FR-4 2-layer board material (60-mil core material) with a dielectric εr ≈ 4.6 and 1/2
oz. Copper.

FIGURE 13 - COPLANAR WAVEGUIDE

ST150M User Manual Confidential & Proprietary Information 26