Harmonic rejection tuner
OwnerPhilippe Boulerneinventor
Life of this patent
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Abstract
The present invention discloses a harmonic rejection tuner system consisting of a radio-frequency (RF) or microwave transmission line having a longitudinal axis, containing at least one harmonic resonator sliding on the central conductor, said harmonic resonator is a pair of shorted-stubs, said shorts are adjustable, making the electromagnetic length of the shunt shorted-stubs variable, therefore making the resonant frequency of the harmonic resonator variable. The harmonic resonator will reflect a harmonic frequency nF0 of a base frequency F0. The harmonic rejection tuner of this invention has an input and output, and is connected in series between the DUT and the large band fundamental tuner.
Claims12
A harmonic rejection load pull tuner comprising:
- means for reflecting at least one harmonic frequency of a base frequency, said means having an input and an output, said input being connected to an output of a device under test (DUT) and said output being connected to the input of large-band tuner, where said means for reflecting at least one harmonic frequency comprising:
- a transmission line having a longitudinal axis of characteristics impedance Z0;
- and at least one shorted-stub in parallel with said transmission line, said shorted-stub having a constant characteristics impedance Z0/2, being galvanically connected to said transmission line and having a shorting mean galvanically connected to the stub and the ground in order to adapt electromagnetic length of said shorted-stub to reflect out an nth order harmonic of a base frequency, where n is an integer greater than 1.
A harmonic rejection source pull tuner comprising:
- means for reflecting at least one harmonic frequency of a base frequency, said means having an input and an output, said input being connected to the output of large-band tuner, and said output being connected to an input of a device under test (DUT), where said means for reflecting at least one harmonic frequency comprising:
- a transmission line having a longitudinal axis of characteristics impedance Z0;
- and at least one shorted-stub in parallel with said transmission line, said shorted-stub having a constant characteristics impedance Z0/2, being galvanically connected to said transmission line and having a shorting mean galvanically connected to the stub and the ground in order to adapt electromagnetic length of said shorted-stub to reflect out an nth order harmonic of a base frequency, where n is an integer greater than 1.
Dependencies are inferred from the claim text.