Sattelite Up-/Downconverter
Downconverter Driver Circuit Upconverter
High Frequency
VNA Calibration, Characterization and Uncertainties
While messing around with the HP 8720A I discovered a great free (for non commercial use) tool called METAS VNA Tools. This software suite offers a comprehensive array of tools for tracking various uncertainty contributors… Weiterlesen »VNA Calibration, Characterization and Uncertainties
Teardown and Repair of a HP 8720A Vector Network Analyzer
I stepped on a good deal for a HP8720A VNA where the RIFA caps just died while testing the device on site at the seller. After replacing the capacitors the unit worked pretty well until… Weiterlesen »Teardown and Repair of a HP 8720A Vector Network Analyzer
Tektronix Type 109
I entered an auction for two visually flawless Tektronix Type 109 pulse generators, though uncertain of their operational status. The Tektronix Type 109 Pulse Generator is a fast risetime pulse generator similar to the pulse… Weiterlesen »Tektronix Type 109
HP 8560A Analysis and initial diagnosis steps
Deep into repairing the 2nd Advantest R3265A with the faulty power supply and replacing the 2nd LO with alternative parts, I’ve discovered an issue with my HP 8560A spectrum analyzer. Technical specifications & features The… Weiterlesen »HP 8560A Analysis and initial diagnosis steps
Repair of Advantest R3265A Part 1
A few years ago, I purchased a spectrum analyzer manufactured by Advantest. The main reason for my purchase was its broad frequency range, spanning from 100 kHz to 8 GHz, and its EMI measurement capabilities.… Weiterlesen »Repair of Advantest R3265A Part 1
I/Q Modulation – Phase Splitter
I think the topic I/Q modulation is damn interesting so I fiddelt a little bit around with the topic. I/Q modulation is the summing of two amplitude modulated 90° phase shifted signals. The experiments for… Weiterlesen »I/Q Modulation – Phase Splitter
Wiltron Model 610C / 610D
Since a few months I’ve now had three Wiltron 610C and one Wiltron 610D lying in the corner.The main reason to acquire them was – apart from being cheap – to be able to test… Weiterlesen »Wiltron Model 610C / 610D
Demodulation in Matlab – AM
Amplitude modulation, or AM, is a method of transmitting radio signals in which the amplitude of the carrier wave is varied according to the information-bearing signal. This is in contrast to frequency modulation (FM) where… Weiterlesen »Demodulation in Matlab – AM
Transmission Line PCB
I wanted to verify all my different assumptions and tool assisted calculations before I do further work on PCIe, SGMII* and Etehernet PCBs. So I calculated the impedances with AlterPCB Transmission Line Simulator (also a… Weiterlesen »Transmission Line PCB