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

Multimode control bias circuit

A bias circuit and resistor technology, applied in electrical components, parts of amplifying devices, high-frequency amplifiers, etc., can solve the problems of large power loss, complex circuit structure, complicated matching structure, etc., and achieve cost-effective and simple structure. Effect

Inactive Publication Date: 2021-03-02
泰新半导体(南京)有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. The circuit structure is complex;
[0008] 2. The matching structure is cumbersome;
[0009] 3. Large power loss

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
  • Multimode control bias circuit
  • Multimode control bias circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying t...

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 multimode control bias circuit, and the circuit comprises a transistor T1, a transistor T2, a transistor T3, a transistor T4 and a radio frequency transistor; a collector electrode and a base electrode of the transistor T1 are interconnected, and a collector electrode and a base electrode of the transistor T3 are interconnected; the emitter of the transistor T1 is connected with the base of the transistor T3 and then connected with a resistor R2 in series to be grounded, the collector of the transistor T1 is connected with the collector of the transistor T2, the emitter of the transistor T2 is connected with the emitter of the transistor T3, and the base of the transistor T2 is connected with a resistor R5 in series and then connected into a voltage control circuit node VMODE. By combining the control voltage of the bias circuit and adjusting the size of the injection current of the bias circuit, the characteristic that the transconductance of the radio frequency transistor changes along with the size of the injection current is fully utilized, multi-mode control is achieved, the requirement of the multi-mode amplifier is met, and therefore the radio frequency amplifier has the advantages of being simple in structure and high in cost performance.

Description

technical field [0001] The invention relates to the technical field of radio frequency microwave semiconductor circuits, in particular to a multi-mode control bias circuit. Background technique [0002] The development of wireless communication technology promotes the continuous progress of RF front-end modules. In mobile communication and satellite communication terminals and other equipment, amplifier modules present multi-mode and multi-working frequency bands. [0003] At present, the mainstream technologies to realize this multi-mode and multi-band include: [0004] 1. Switching two or more amplifiers through a switch to achieve a variety of different output power modes; [0005] Second, optimize and reconstruct the output matching, and realize the output matching impedance transformation and frequency selection by means of switches. [0006] The above two types of methods have their own advantages and disadvantages, and their disadvantages are mainly reflected in the...

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): H03F1/02H03F3/19H03F3/21
CPCH03F1/0205H03F3/19H03F3/21
Inventor 王海军
Owner 泰新半导体(南京)有限公司
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