Читать книгу Handbook of Microwave Component Measurements - Joel P. Dunsmore - Страница 50

The 1 mm connector is essentially a scaled version of the 1.85 mm connector but cannot be mated to it. It is typically specified to 110 GHz performance but is usable to above 120 GHz, with some versions being specified up to 120 GHz and used up to 140 GHz. Figure 1.28 shows the response of a mated pair of 1 mm male‐to‐male and female‐to‐female adapters (right scale) along with the same 1.85 mm mated pair of Figure 1.27 (left scale). The reference line is offset by 1 division to make it easier to see the traces; without the offset, the traces would lie nearly on top of each other. The mode for 1 mm is a bit of a deeper mode but is now out past 120 GHz. There is a second mode at 124 GHz, but both are also non‐propagating, so it may be possible to remove them with calibration. The depth of the mode does imply that it may be from the multiple beads in the mated pair and not be very stable with changes in temperature.

Figure 1.28 Response of a 1 mm mated pair and a 1.85 mm mated pair.