Hybrid harmonic impedance tuner
OwnerChristos Tsironisinventor
Life of this patent
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Abstract
A hybrid harmonic slide screw tuner uses the forward injection technique, also called Gamma Boosting Unit (GBU) cascaded with two independent tuning probes in the same slabline and housing. The wave-probes used in the GBU sample a portion of the forward travelling signal, adjusts its phase, amplifies it, adjusts its amplitude (attenuation) and couples it back, in reverse direction into the main signal path. In the present active tuner technique as is herein implemented, the passive tuners and the signal couplers are mounted on the same double carriages which move each carriage horizontally and the wave- and tuning probes vertically, independently. Appropriate calibration and tuning algorithms ensure independent hybrid (active and passive) harmonic tuning.
Claims6
A hybrid harmonic impedance tuner comprising,
- two ports, an input (test) port and an output (idle) port, and a slotted airline (slabline) between the ports,
- at least two mobile carriages sliding independently along the axis of the slabline and having two independent vertically movable axes each,
- an external amplifier having an input and an output port,
- and characteristic impedance (Zo) terminations;
- whereby each carriage carries one signal coupler (wave-probe) on one axis and one reflective (tuning) probe on the other axis,
- and whereby carriage #1 carries wave-probe #1 and tuning probe #1 and carriage #2 carries wave-probe #2 and tuning probe #2;
- whereby carriage #1 and carriage #2 are travelling on cascaded sections of the slabline;
- and whereby the wave-probes and the tuning probes are insertable to adjustable depth into the slot of the slabline;
- and whereby a coupled port of one wave-probe is connected to the input port of the amplifier and the output port of the amplifier is connected to a coupled port of the other wave-probe and whereby an isolated port of the wave-probes is terminated with Zo.
A compact hybrid harmonic slide screw impedance tuner comprising,
- two ports, an input (test) port and an output (idle) port, and a slotted airline (slabline) between the ports, said slabline comprising two parallel vertical conductive walls and a center conductor between the ports;
- and at least two mobile carriages sliding independently along the axis of the slabline and having two independent vertically movable axes each,
- an external amplifier having an input and an output port,
- and characteristic impedance (Zo) terminations;
- whereby each carriage carries one signal coupler (wave-probe) on one axis and one reflective tuning probe on the other axis,
- and whereby carriage #1 carries wave-probe #1 and tuning probe #1 and carriage #2 carries wave-probe #2 and tuning probe #2;
- and whereby the carriages are mounted diametric on top and bottom of the slabline sharing the same section of the slabline,
- and whereby the wave-probes and the tuning probes are insertable to adjustable depth into the slot of the slabline from opposite directions;
- and whereby a coupled port of one wave-probe is connected to the input port of the amplifier and the output port of the amplifier is connected to a coupled port of the other wave-probe and whereby an isolated port of the wave-probes is terminated with Zo.
Dependencies are inferred from the claim text.