Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- projekte:lofourx:start [2021/01/13 20:40] – thasti
+++ projekte:lofourx:start [2025/12/16 09:26] (aktuell) – [other frequencies] yc
@@ Zeile 6: / Zeile 6: @@
 The PCB is designed for the four-layer JLCPCB RF process (stackup JLC7628), and neatly fits into a small Hammond 1455 case. A DC voltage between 7 and 15 volts can be used to supply the enclosed device, which makes it a convenient local oscillator source for the amateur laboratory.
+While a four layer PCB would not have been strictly necessary, the SMA-to-GCPW transitions have been simulated using this SMA connector and PCB stackup. The thin (and somewhat well-defined) prepreg of the outer layers allows for proper impedance control and low dielectric losses.
 {{:projekte:lofourx:lofourx_pcb_render.jpg?800|}}
@@ Zeile 37: / Zeile 39: @@
   * **6th harmonic**: -39.4 dBc
+A second multiplier built by Sebastian shows comparable values using a 4 dB pad.
+^ Frequency ^ P<sub>out</sub> ^
+| 9.5 GHz   | -0.25 dBm |
+| 9.6 GHz   | 0.14 dBm |
+| 9.7 GHz   | 0.46 dBm |
+| 9.8 GHz   | 0.73 dBm |
+| 9.9 GHz   | 0.99 dBm |
+| 10.0 GHz   | 1.18 dBm |
+| 10.1 GHz   | 1.36 dBm |
+| 10.2 GHz   | 1.51 dBm |
+| 10.3 GHz   | 1.62 dBm |
+| 10.4 GHz   | 1.71 dBm |
+===== other frequencies =====
+Compatible Multiplier with the same footprint exist and the multiplier board can be used for other frequency bands, e.g. 12 GHz as 12 GHz LO for sub-harmonic mixer setups for 24 GHz and above.
+A board with HMC695 is populated and characterized.
+^ Frequency ^ P<sub>out</sub> ^
+| 11.4 GHz   | -0.4 dBm |
+| 11.6 GHz   | 0.4 dBm |
+| 11.8 GHz   | 1.14 dBm |
+| 12.0 GHz   | 1.78 dBm |
+| 12.2 GHz   | 2.32 dBm |
+| 12.4 GHz   | 2.77 dBm |
+| 12.6 GHz   | 3.12 dBm |
+| 12.8 GHz   | 3.35 dBm |
+| 13.0 GHz   | 3.29 dBm |
+| 13.2 GHz   | 2.87 dBm |