Method and arrangement for detecting load mismatch, and a...

Details Method and arrangement for detecting load mismatch, and a... Method and arrangement for detecting load mismatch, and a...

2005-11-15

2005-11-15

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C455S115100, C455S126000, C455S129000, C330S284000, C330S144000, C324S600000

Reexamination Certificate

active

06965837

ABSTRACT:
A method and an arrangement for detecting impedance mismatch between an output of a radio frequency amplifier (200, 901, 911, 921, 1101) which has an amplifying component (201, 301,Q46, 701, 801) and an input of a load (203, 302) coupled to the output of the radio frequency amplifier having: first monitoring means (401) to monitor a measurable electric effect (311) at a side of the amplifying component (201, 301,Q46, 701, 801) other than the load (203, 302) and to produce a first measurement signal (411). Second monitoring means (402) monitor a measurable electric effect (312) between the amplifying component (201, 301,Q46, 701, 801) and the load (203, 302) and produce a second measurement signal (412). Decision-making means (204, 902, 912, 923, 1102) receive said first (411) and second (412) measurement signals and decide, whether said first and second measurement signals together indicate impedance mismatch.

REFERENCES:
patent: 4673886 (1987-06-01), Bickley et al.
patent: 4704573 (1987-11-01), Turner, Jr.
patent: 4727337 (1988-02-01), Jason
patent: 5564086 (1996-10-01), Cygan et al.
patent: 6215359 (2001-04-01), Peckham et al.

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