A receiver channel based on monopulse 0/π modulation in ka-band for satellite

A single-pulse, frequency-band technology, applied in the field of satellite self-tracking systems, can solve the problems of large power consumption, large volume, and poor maintainability, and achieve the effects of low loss, low noise figure, and high reliability

Active Publication Date: 2018-03-09
BEIJING RES INST OF TELEMETRY +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional dual-channel system is that when the relative gain and relative phase between the two channels change, the receiver system needs to readjust the gain and phase, the maintainability is not strong, and there are also large volume and high power consumption. and other shortcomings

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 receiver channel based on monopulse 0/π modulation in ka-band for satellite
  • A receiver channel based on monopulse 0/π modulation in ka-band for satellite
  • A receiver channel based on monopulse 0/π modulation in ka-band for satellite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 As shown, the receiving channel based on single pulse 0 / π modulation in the Ka frequency band of the present invention is composed of a low noise amplifier, a waveguide filter, a high phase modulation precision 0 / π modulator, and a combined harmonic mixer, and the cascade interface is BJ260 ( WR34) waveguide port to meet the application requirements of Ka frequency band.

[0023] The signal is amplified by a low-noise amplifier, filtered by a filter, and the low-frequency modulation signal is applied to a 0 / π modulator to perform 0 / π modulation on the difference signal to separate the spectrum of the difference signal, and finally the combination of the difference signal and the sum signal is completed Single channel transmission.

[0024] The two-stage low-noise amplifier and the waveguide filter form the sum channel to amplify and filter the sum signal. The low-noise amplifier adopts a high-gain low-noise figure amplifier chip and a microstrip integrated d...

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

A receiving channel based on monopulse 0 / π modulation for a satellite Ka frequency band, comprising a low noise amplifier, a filter, a 0 / π modulator, and a combined harmonic mixer; The filter realizes the out-of-band signal clutter suppression, and enters an input terminal of the combined harmonic mixer; the difference signal is amplified by the low-noise amplifier in turn, and the filter out-of-band signal clutter is suppressed, and the 0 / π modulator performs 0 After / π phase modulation, it enters the other input terminal of the combined harmonic mixer; the sum signal and the difference signal are first summed and combined into one channel in the combined harmonic mixer, and then down-converted to the intermediate frequency output. Implement single-channel transmission. The invention has the characteristics of low noise figure, high carrier suppression, small size, high reliability and adaptability to complex space environments, and can work reliably for a long time in a satellite self-tracking system.

Description

technical field [0001] The invention relates to a receiving channel based on single-pulse 0 / π modulation in the Ka frequency band for satellites, which has the characteristics of low noise figure, high carrier suppression, small size, high reliability, adaptability to complex space environments, etc., and can be widely used in satellite autonomous systems. in the tracking system. Background technique [0002] The single-channel single-pulse modulation system plays an important role in the fields of aerospace telemetry and remote control, and target tracking, and has been widely used in receiving systems such as satellite remote sensing, meteorology, and relay transmission. It has the advantages of saving channels, simple equipment, high reliability, and tracking The advantages of high precision. The shortcomings of the traditional dual-channel system are that when the relative gain and relative phase between the two channels change, the receiver system needs to readjust 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 Patents(China)
IPC IPC(8): H04L27/227H01P5/107
Inventor 王冬冬刘德喜何彩分于洋王莉莉沈鹏
Owner BEIJING RES INST OF TELEMETRY
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