Active phased array adjustment using transmit amplitude adjustme

Details Active phased array adjustment using transmit amplitude adjustme Active phased array adjustment using transmit amplitude adjustme

1996-05-02

1997-07-01

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

By monitoring

G01S 740

Patent

active

056443161

ABSTRACT:
An RF drive leveling adjustment method using transmit amplitude adjustment range for use with active phased array antenna systems. Relative RF measurements of transmit amplitude adjustment range of an active array antenna or selected elements or sets of elements of the antenna are used to determine correction factors for RF drive levels of RF drive amplifier(s) used by transmit modules of the active array antenna. The method comprises the following steps. The first step comprises calibrating the transmit RF drive amplifiers of an active array antenna for a predetermined transmit duty factor and pulse repetition frequency. The second step comprises measuring relative RF measurements of transmit amplitude adjustment range of the transmit module. The third step comprises determining correction factors for RF drive levels of the transmit RF drive amplifiers. The fourth step comprises adjusting the RF drive level of the transmit RF drive amplifiers using the correction factors. by using the correction factors, phase and gain command linearization table performance of the transmit modules is preserved.

REFERENCES:
patent: 5093667 (1992-03-01), Andricos
patent: 5412414 (1995-05-01), Ast et al.
patent: 5530449 (1996-06-01), Wachs et al.

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