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

A Broadband Low Noise Amplifier

A broadband low-noise, amplifier technology, applied in the direction of differential amplifiers, DC-coupled DC amplifiers, etc., can solve the problems of increasing circuit overhead, achieve the effect of improving stability and gain, and avoiding additional circuit overhead

Active Publication Date: 2018-01-02
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the low-noise amplifier usually has a single-ended output and the differential mixer has a double-ended input, an additional circuit from single-ended to double-ended is usually required to realize the function of single-ended to double-ended. This single-ended to double-ended additional circuit Increased circuit overhead

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
  • A Broadband Low Noise Amplifier
  • A Broadband Low Noise Amplifier
  • A Broadband Low Noise Amplifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings of the specification. Of course, the present invention is not limited to this specific embodiment, and general replacements well known to those skilled in the art are also covered by the protection scope of the present invention.

[0023] In this specification and in the claims, it should be understood that when an element is referred to as being "coupled" or "connected" to or "connected" with another element, it can be directly connected to another element, Or there may be intervening elements.

[0024] Please refer to figure 1 The single-channel to dual-channel broadband low-noise amplifier of the present invention includes an amplifier stage 1, a differential stage 2, a load stage 3 and a feedback stage 4. Among them, the amplifying stage 1 receives the radio frequency in...

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 single-way-to-double-way broadband low-noise amplifier which comprises an amplifying stage, a difference stage, a load stage and a feedback stage. The amplifying stage is used for amplifying input signals. The difference stage is used for converting signals output by the amplifying stage from single-way signals to a pair of difference signals with the phase difference being 180 degrees. The load stage is connected between the output end of the difference stage and a power supply. The feedback stage is connected between the output end of the difference stage and the amplifying stage and is used for converting the difference signals into single-way feedback signals, and the single-way feedback signals are fed back to the input end of the amplifying stage. According to the broadband noise amplifier, the receiving characters of broadband signals can be achieved, the single-way signals are converted into the difference signals to be transmitted to a back-stage frequency mixer, and the stability and the gain of a whole loop are improved.

Description

Technical field [0001] The invention belongs to the field of radio frequency wireless transceivers, and is specifically a wideband low-noise amplifier that converts from a single channel to a dual channel. Background technique [0002] The low-noise amplifier is one of the important modules in the radio frequency transceiver. It is mainly used in the communication system to amplify the signal received from the antenna to facilitate the processing of the subsequent receiver circuit. [0003] Since the signal from the antenna is generally very weak, the low noise amplifier is generally located very close to the antenna to reduce signal loss. It is precisely because the low noise amplifier is located at the first stage of the entire receiver next to the antenna, its characteristics directly affect the quality of the received signal of the entire receiver. In order to ensure that the signal received by the antenna can be correctly recovered in the last stage of the receiver, a good lo...

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 Patents(China)
IPC IPC(8): H03F3/45
Inventor 李琛
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com