Hybrid harmonic tuner
OwnerChristos Tsironisinventor
Life of this patent
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Abstract
A hybrid harmonic tuner uses a reverse injection technique, a modified adjustable Gamma Boosting Unit (GBU) cascaded with a passive multi-carriage harmonic impedance tuner in the same slabline and housing. The GBU samples a portion of the forward travelling signal at the fundamental frequency, adjusts its phase and amplitude, amplifies it and injects it back, in reverse direction into the main signal path. In the hybrid tuner technique, as is herein implemented, the forward coupler (wave-probe) is mounted on the vertical axis of a slide screw tuner-type carriage and, being horizontally and vertically controlled, it eliminates the need of a separated phase shifter and attenuator, which makes the solution better, simpler and more effective; harmonic tuning is performed using only the multi-carriage passive tuner.
Claims10
A hybrid harmonic impedance tuner comprising
- an active fundamental frequency impedance tuner including an adjustable directional coupler having an input port, a coupled port and an idle port, a power amplifier having an input port and an output port, an injection coupling device having a coupled port, an output port and an idle port, and characteristic impedance (Zo) terminations;
- a passive harmonic frequency impedance tuner including a slabline (slotted airline) having an input test port and an output idle port, a center conductor and two or more mobile carriages sliding independently horizontally along the axis of the slabline and having one or more vertically movable axes each, each said axis carrying a reflective tuning probe;
- and wherein
- the coupler is integrated in the slabline and placed between the input test port and the mobile carriages of the passive harmonic frequency impedance tuner and is sampling signal power from the slabline;
- the coupled port of the coupler is connected to the input port of the amplifier;
- the output port of the amplifier is connected to the coupled port of the injection coupling device of which the output port is connected to the output port of the slabline.
Dependencies are inferred from the claim text.