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US 12,111,347 B1Granted
Simple waveguide load pull tuner
OwnerChristos Tsironisinventor
Life of this patent
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Abstract
A simple low-profile waveguide load pull tuner uses a horizontally only moving reflective probe and an adjustable attenuator placed between the DUT and the tuning probe. Both controls are using stepper attenuators mounted on the waveguide. This simplifies the design and minimizes the cost of manufacturing. The tuner has wideband 50 Ohm tuning capability allowing minimum risk of transient spurious oscillations. A de-embedding adapter removal calibration method allows generating thousands of calibrated points in a small fraction of the time needed for calibration of the full permutations.
Claims7
A load pull tuner system comprising:
- A waveguide load pull tuner comprising:
- a waveguide transmission line having two broad walls and two narrow walls, a test and an idle port, at least one slot centered along a broad wall, and
- a remotely controlled mobile carriage travelling along the waveguide and holding a reflective tuning probe which is inserted into the at least one slot at a fixed penetration,
- and
- a RF energy-absorbing sliver, remotely insertable at adjustable penetration into the at least one slot;
- wherein
- the RF energy-absorbing sliver is placed at a fixed position along the waveguide between the test port and the reflective tuning probe;
- and a waveguide load pull tuner calibration method comprising:
- connecting the tuner to a pre-calibrated vector network analyzer,
- measuring s-parameters of the tuner at a multitude of penetrations of the RF energy-absorbing sliver and positions of the reflective tuning probe along the waveguide and saving in a calibration file for later use.
7 more elements
Dependencies are inferred from the claim text.