Temperature compensation circuit and radio frequency power amplifying circuit for radio frequency power amplifier

A temperature compensation circuit for a radio frequency power amplifier, wherein the temperature compensation circuit comprises a temperature control circuit and a negative feedback circuit, wherein:

• the temperature control circuit is connected to the negative feedback circuit, and configured to generate a first electrical signal corresponding to a temperature, and adjust a second electrical signal on a first node according to the first electrical signal, wherein the first node is a point on a connection between the temperature control circuit and the negative feedback circuit;
• the negative feedback circuit is connected to an input of the radio frequency power amplifier, and configured to provide a negative feedback signal for the radio frequency power amplifier based on the second electrical signal, wherein the second electrical signal is used to change a resistance value of the negative feedback circuit to adjust a negative feedback signal associated with the resistance value;
• the negative feedback signal is used to be inputted into the radio frequency power amplifier to change a gain of the radio frequency power amplifier;
• wherein:
• the negative feedback circuit comprises a transistor group circuit, a resistor circuit, a first capacitor, and a second capacitor;
• the transistor group circuit comprises n transistors connected in series, wherein a gate of the transistor is connected to the first node to cause the resistance value of the negative feedback circuit to change with the second electrical signal;
• the resistor circuit comprises n resistors and one ground resistor, wherein the n resistors are connected in parallel with the n transistors to provide a DC zero level for the n transistors, n being a positive integer greater than 3;
• the first capacitor is located between the second node and the transistor group circuit, wherein the second node is a point on a connection between the negative feedback circuit and the input of the radio frequency power amplifier;
• and
• the second capacitor is located between a third node and the transistor group circuit, wherein the third node is a point on a connection between the negative feedback circuit and an output of the radio frequency power amplifier.

A radio frequency power amplifying circuit, wherein the radio frequency power amplifying circuit comprises a temperature compensation circuit and a radio frequency power amplifier, wherein:

• the temperature compensation circuit comprises a temperature control circuit and a negative feedback circuit;
• the temperature control circuit is configured to generate a first electrical signal corresponding to a temperature, and adjust a second electrical signal on a first node according to the first electrical signal, wherein the first node is a point on a connection between the temperature control circuit and the negative feedback circuit;
• the negative feedback circuit is configured to provide, based the second electrical signal, a negative feedback signal for the radio frequency power amplifier through a second node, wherein the second electrical signal is used to change a resistance value of the negative feedback circuit to adjust the negative feedback signal associated with the resistance value, and the second node is a point on a connection between the negative feedback circuit and an input of the radio frequency power amplifier;
• the negative feedback signal is used to be inputted into the radio frequency power amplifier to change a gain of the radio frequency power amplifier;
• the radio frequency power amplifier comprises at least one input and at least one output and is configured to amplify an input signal;
• the input of the radio frequency power amplifier is connected to the second node and configured to receive the input signal;
• the output of the radio frequency power amplifier is connected to the negative feedback circuit through a third node and used to output an output signal amplified from the input signal, wherein the gain of the radio frequency power amplifier changes with the temperature, and the third node is a point on a connection between the negative feedback circuit and the output of the radio frequency power amplifier;
• the negative feedback circuit comprises an inverter group circuit, a transistor group circuit, a parallel resistor circuit, a first capacitor and a second capacitor;
• the inverter group circuit comprises m inverters, wherein an output of each inverter is connected to an input of each transistor group in the transistor group circuit, and an input of each inverter is connected to the first node to invert and transmit the second electrical signal to the transistor group circuit;
• the transistor group circuit comprises m transistor groups connected in parallel, wherein each transistor group comprises n transistors connected in series to cause a resistance value of the transistor group circuit to change with the second electrical signal;
• the resistor circuit comprises m resistor groups and one ground resistor, wherein each resistor group of the m resistor groups comprises n resistors, the n resistors are connected in parallel with the n transistors of each transistor group of the transistor group circuit to provide a DC zero level for the m transistor groups connected in parallel;
• the first capacitor is located between the second node and the transistor group circuit;
• and
• the second capacitor is located between a third node and the transistor group circuit, wherein the third node is a point on a connection between the negative feedback circuit and an output of the radio frequency power amplifier,
• m being a positive integer greater than 1, and n being a positive integer greater than 3.