Title:
DEVICE FOR PRELIMINARILY CORRECTING NONLINEARITY IN POWER AMPLIFYING ROW OF TELEVISION TRANSMITTER
Document Type and Number:
Japanese Patent JPS60178781
Kind Code:
A
Abstract:
A device for the automatic precorrection of non-linearities of a power amplification chain in a common channel television transmitter. The device has a first circuit for detecting the component to be corrected prior to amplification and addition of the components to be simultaneously amplified, a circuit for selecting the same components after amplification in a common channel, an attenuator of the latter component having an attenuation coefficient equal to the linear part of the amplification chain gain, a second detection circuit, an analog divider receiving the two detected components, whereof the output is coupled to the precorrection control input of a precorrection circuit upstream of the first precorrection circuit.
Inventors:
FUIRITSUPU KORUBERU
MISHIERU ARANI
MISHIERU ARANI
Application Number:
JP22189784A
Publication Date:
September 12, 1985
Filing Date:
October 22, 1984
Export Citation:
Assignee:
TOMUSON ERU JIE TEE LAB GENERA
International Classes:
H03F1/32; H04B1/04; H04N5/38; (IPC1-7): H03F1/32; H04B1/04; H04N5/38
Attorney, Agent or Firm:
Kazuo Sato