Ka waveband radio frequency modulation system and method

A radio frequency modulation and ka-band technology, applied in the field of Ka-band radio frequency modulation systems, can solve the problems of modulation system performance index and poor flexibility, etc., achieve flexible transmission code rate and modulation mode, simple shaping method, and performance improvement

Inactive Publication Date: 2016-11-23
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a Ka-band radio frequency modulation system and method, which solves the problems of poor performance index and flexibility of common modulation systems,...

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
  • Ka waveband radio frequency modulation system and method
  • Ka waveband radio frequency modulation system and method
  • Ka waveband radio frequency modulation system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0050]In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0051] see figure 1 , the Ka-band radio frequency modulation system of the embodiment of the present invention includes: a baseband signal processing module 1 , a digital-to-analog conversion processing module, a carrier source generating module and a quadrature analog modulator 6 . ...

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 present invention proposes a Ka-band radio frequency modulation system and method, including: a baseband signal processing module, which receives a digital baseband signal, and performs constellation mapping on it according to a corresponding modulation mode, and performs shaping and filtering on the generated constellation mapping symbols Output; the digital-to-analog conversion processing module is connected to the baseband signal processing module to perform digital-to-analog conversion and filtering on the shaped and filtered data signal, and output the analog baseband signal; the carrier source generation module is used to generate and output modulation Carrier signal; quadrature analog modulator, connected to the digital-to-analog conversion processing module and the carrier source generation module, for performing quadrature analog modulation on the analog baseband signal according to the carrier signal, and outputting a modulated radio frequency signal. It solves the problems of poor performance index and flexibility of common modulation systems, and achieves the characteristics of simple circuit, small footprint, low power consumption, excellent modulation performance index, and strong flexibility.

Description

technical field [0001] The invention relates to the field of modulation technology, in particular to a Ka-band radio frequency modulation system and method. Background technique [0002] The traditional spaceborne data transmission modulation method adopts MPSK (multi-ary digital phase modulation) analog radio frequency modulation technology. Specifically, the bipolar baseband data signal without data processing is used to control the switch of the mixer. The mixer works in the saturation region, so the nonlinear index of the modulated signal output by the mixer is poor, and the frequency band utilization rate is not high. Band-pass filters filter out pass-band interference. Due to the increase of data communication transmission rate, the substantial increase of frequency band, such as the improvement of EVM (error vector magnitude) and amplitude-phase imbalance, the performance of high-speed transmission of the system is greatly limited. [0003] In addition, linear modul...

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
IPC IPC(8): H04B1/00H04L27/00H04L27/34H04L27/36
CPCH04B1/0042H04L27/0002H04L27/3483H04L27/364
Inventor 向前刘聚杨津浦宋轲欣范季夏
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap