Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Radio frequency front-end analog compensation circuit

An analog compensation and RF front-end technology, applied to electrical components, improved amplifiers to reduce temperature/power supply voltage changes, and amplification control, etc., can solve problems such as poor temperature sensitivity and poor real-time adjustment, and achieve strong real-time performance and control range big effect

Pending Publication Date: 2020-02-14
TIANJIN JINHANG COMP TECH RES INST
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature compensation attenuator is set, it is far away from the heat source, the temperature sensitivity is poor, and the real-time adjustment is poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Radio frequency front-end analog compensation circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] The RF front-end analog compensation circuit of the present invention needs to realize that when the temperature changes, it can sense the temperature of the existing module through the temperature sensor, and then control the gate voltage of the final amplifier through the operational amplifier, thereby controlling the output power at full temperature.

[0017] The present invention is a radio frequency front-end analog compensation technology, and its circuit principle diagram can be found in figure 1 , the RF front-end analog compensation circuit includes a first amplifier 1, a second amplifier 2, an isolator 3, an antenna 4, a temperature sensor 5 and a differential operator 6, and the temperature sensor 5 is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a radio frequency front-end analog compensation circuit, which comprises a first amplifier (1), a second amplifier (2), an isolator (3), an antenna (4), a temperature sensor (5) and a differential arithmetic unit (6), and is characterized in that the temperature sensor (5) is arranged at the periphery of the second amplifier (2) and is used for acquiring temperature changein real time; a radio frequency signal passes through the first amplifier (1) and the second amplifier (2) and then is radiated out through the isolator (3) and the antenna (4). Along with the increase of the working time, the temperature of the amplifier module is increased due to the heat consumption generated by the second amplifier (2), the voltage value acquired by the temperature sensor (5)is changed, and the grid bias voltage of the second amplifier (2) is compensated through the change result obtained by differential operation of the variable quantity of the temperature sensor (5) through the differential arithmetic unit (6). The circuit can sense the temperature change of a heat source in real time, correspondingly adjusts circuit gain, is large in control range, and is high in real-time performance.

Description

technical field [0001] The invention belongs to the related technical field of radio frequency front-end circuit design based on data link wireless communication links, and relates to a radio frequency front-end analog compensation circuit, in particular to a circuit gain analog compensation technology of a radio frequency front-end module, the radio frequency front-end module has analog conditions under the temperature compensation function. Background technique [0002] In the data link wireless communication link, the RF front-end module, as an essential component, plays a pivotal role. However, due to the material characteristics of radio frequency devices, the gain output will change as the temperature changes, so that the output power will also change with the temperature change. The inherent change law of radio frequency devices is: at high temperature, the gain decreases, and the output power decreases; at low temperature, the gain increases, and the output power in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/30H03G3/20
CPCH03F1/30H03G3/20
Inventor 刘震
Owner TIANJIN JINHANG COMP TECH RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products