Signal cuber circuit

Details Signal cuber circuit Signal cuber circuit

H - Electricity

03

B

328/16

H03B 19/00 (2006.01) H03B 19/16 (2006.01)

Patent

CA 1105573

- 1 - A SIGNAL CUBER CIRCUIT Abstract of the Disclosure The problems associated with large bandwidth requirements and of precisely controlling the relative magnitudes of the distortion components generated in predistorters are resolved in a bridge-type cuber circuit. The cuber comprises a resistive bridge which includes a pair of oppositely-poled diodes connected in parallel with the resistor in each branch of one pair of opposite branches of said bridge. The parameters of the cuber, which is balanced with respect to fundamental frequency signals, are adjusted so that predominantly third order intermodulation components are generated, and an impedance match with the signal source is obtained. The cuber circuit is used in a predistorter for cancelling third order distortion components produced in nominally linear amplifiers.

315655

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