KR940025341A - Strain Generation Circuits and Optical Transmitters Optical Receivers and Low Strain Amplifiers - Google Patents

Abstract

The present invention provides a strain generation circuit for canceling the nonlinearity of input and output characteristics of an output terminal of a high frequency signal and linearizes the output analog signal, particularly suitable for multi-analog image transmission such as CATV. The invention relates to a generation circuit, which aims to provide a circuit which can simplify a circuit configuration, suppress generation of unnecessary harmonic distortion, and provide a desired deformation satisfactorily. Has an attenuator R10 to R30 with impedance matching of input and output, and at least one diode D11, D12 connected to the attenuator in an alternating manner with respect to the attenuator input signal. Is part of the bias circuit of the diode. Each diode is characterized in that its bias point can be independently defined.

Description

Strain Generator and Optical Transmitter Optical Receiver and Low Strain Amplifier

Since this is an open matter, no full text was included.

1 is a circuit diagram of an example of the configuration of a strain generator circuit of the first embodiment.

Claims (22)

A distortion generating circuit for canceling nonlinearity of input and output characteristics of an output terminal of a high frequency signal, the linear attenuator having impedance matching of input and output, and the linear attenuator connected in parallel with the linear attenuator with respect to the input signal of the linear attenuator. And at least one diode to be generated, and outputting an alternating sum of the output of the linear attenuator and the output of the diode. 2. The device of claim 1, further comprising a resistor connected in series to the output of the diode, wherein a series pair with the resistor of the diode is connected in parallel with the linear attenuator in parallel with the input signal of the linear attenuator. Strain generation circuit characterized in that. The said at least one diode is provided with one or more pairs of diodes connected in opposite polarity with respect to the input signal of the said linear attenuator, and outputs it by giving a distortion of an odd order to the said input signal. Strain generation circuit. 2. The at least one diode of claim 1, wherein the at least one diode comprises at least one diode that generates a substantially second or more even order distortion with respect to the input signal of the linear attenuator and imparts an even order distortion to the input signal. The strain generating circuit, characterized in that for outputting. The deformation generating circuit according to claim 1, wherein the linear attenuator comprises a plurality of resistors. 6. The strain generating circuit according to claim 5, wherein a part of the resistance of the linear attenuator is part of a bias circuit of the diode. 4. The strain generating circuit according to claim 3, wherein the bias points of the diodes are independently adjustable. 4. The strain generating circuit according to claim 3, wherein the diode is connected in series with the bias power supply in direct current and the bias point is adjustable at the same time. The strain generating circuit according to claim 1, wherein at least one of the diodes is a PIN type. The strain generating circuit according to claim 1, wherein at least one of the diodes is a schottky type. The strain generating circuit according to claim 1, further comprising a capacitor connected in parallel to said diode. The strain generating circuit according to claim 1, wherein the diode is connected in parallel with the input signal in alternating current. 13. The strain generating circuit according to claim 12, wherein the diode includes both a PIN type and a schottky type. An optical transmitter comprising: a strain generating circuit according to claim 1 which imparts nonlinear strain to an input signal, and a light generating element driven by a signal output from the strain generating circuit. The first strain generating circuit according to claim 2 which gives a distortion of odd aberration to an input signal and outputs it, and the signal output from the said 1st strain generating arc is input, and it is an even number. And a second strain generating circuit as claimed in claim 3 which gives a strain of a difference and outputs the same, and a light generating element driven by a signal output from the second strain generating circuit. Optical transmitter. 15. The optical transmitter of claim 14, wherein the photogenerator is a semiconductor laser diode. A light receiving element for receiving light and converting the light into an electric signal, and a strain generating circuit according to claim 1 for inputting an electric signal output from the light receiving element to give a nonlinear bottle shape. receiving set. 18. The apparatus of claim 17, wherein the light receiving element receives light and converts the light into an electric signal, and the electric signal outputted from the light receiving element is input and the distortion is corrected to output an odd aberration. And a second generation circuit of claim 3 for inputting a signal generated from the first generation circuit and the signal output from the first generation circuit, to give the even-order distortion. Photoreceptor made with. An optical transmitter for modulating and outputting an input light by a signal input from an external device, the optical transmitter comprising a distortion generating circuit according to claim 1 for inputting a modulated signal, giving a nonlinear deformation, and outputting the same; And an optical modulator for modulating and outputting the input light in response to the received signal. 20. The optical transmitter according to claim 19, wherein the optical transmitter modulates the input light by a signal input from the outside and outputs the modulated signal. The second strain generating circuit according to claim 3, wherein the strain generating circuit and the signal output from the first strain generating circuit are inputted to give an even number of strains and output the strain. And an optical modulator for modulating and outputting the input light in response to a signal output from the generator circuit. A low strain amplifier comprising a strain generating circuit according to claim 1 for imparting nonlinear strain to an input signal, and an amplifier for inputting and amplifying a signal output from the strain generating circuit. 22. The apparatus according to claim 21, wherein the first strain generating circuit as claimed in claim 2 and a signal output from the first strain generating circuit are inputted to give the input signal a strain of odd aberration, and output the same. A second strain generating circuit as claimed in claim 3 which gives a difference of strain and outputs it, and an amplifier which inputs and amplifies a signal output from said second strain generating circuit. Strain amplifiers. ※ Note: This is to be disclosed by the original application.