Harmonic load pull tuner with resonant prematching module

Details Harmonic load pull tuner with resonant prematching module Harmonic load pull tuner with resonant prematching module

2006-07-17

2008-11-11

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Distributive type parameters

C324S636000, C324S637000, C324S623000

Reexamination Certificate

active

07449893

ABSTRACT:
A harmonic rejection load pull tuner uses a resonant pre-matching module in order to enhance the reflection factor (tuning range) at the fundamental frequency without affecting the tuning range at the harmonic frequencies. The insertion loss of the harmonic tuner itself, if such a pre-matching module is not used, reduces the tuning range, generated by a wideband tuner at the fundamental frequency, connected after the harmonic tuner. In order to re-establish and increase the tuning range of the fundamental tuner a resonant pre-matching module is used, which increases the tuning range at the fundamental frequency and has no effect on the harmonic impedances. A wideband pre-matching module is not useful, since while it increases the tuning range at the fundamental frequency, it limits the tuning range at the harmonic frequencies.

REFERENCES:
patent: 3953796 (1976-04-01), Keller
patent: 6297649 (2001-10-01), Tsironis
patent: 6674293 (2004-01-01), Tsironis
patent: 7042233 (2006-05-01), Boulerne
patent: 2004/0207426 (2004-10-01), Tsironis
Product Note 41: “Computer Controlled Microwave Tuner, CCMT” Focus Microwaves Inc, Jan. 1998.
Tsironis, C, Meierer, R: “Laod Pull Tuners are Frequency Selective”. Microwaves & RF Magazine Jan. 2004.

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