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

Short wave antenna tuner insertion loss measuring device and method

A technology of insertion loss and measurement device, which is applied in the direction of measurement device, measurement of electrical variables, measurement of resistance/reactance/impedance, etc., can solve the problem that the antenna is not a fixed resistance value, and the insertion loss test of the antenna tuner cannot be realized, so as to improve the measurement The effect of precision

Active Publication Date: 2016-07-06
CHINA SHIP DEV & DESIGN CENT
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antenna tuner must be used together with the short-wave radio station and short-wave antenna, and the impedance of the antenna is not a fixed resistance value, so the traditional dual power meter method cannot realize the insertion loss test of the antenna tuner

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
  • Short wave antenna tuner insertion loss measuring device and method
  • Short wave antenna tuner insertion loss measuring device and method
  • Short wave antenna tuner insertion loss measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0023] Such as image 3 As shown, the short-wave transmitter is connected to the input end of the through-type power meter through the first coaxial cable, and the output end of the through-type power meter is connected to the antenna tuner through a short connection line, and the antenna tuner is connected to the short-wave transmitting antenna through the cable Connection, the shortwave receiving antenna is placed in an open place far from the shortwave transmitting antenna, and the output of the receiving antenna is connected to the spectrum analyzer.

[0024] The shortwave transmitter operates at the operating frequency f 1 After tuning, transmit in constant-amplitude reporting mode, and record the passing power P displayed by the passing power meter 1 (unit: W) and the spectrum analyzer at the operating frequency point (frequency) f 1 The magnit...

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 relates to a short wave antenna tuner insertion loss measuring device and method. The device comprises an actual transmitter emission and test unit, a signal source and a power amplifier emission and test unit. The method includes the steps that: the actual transmitter emission and test unit is connected, an output power of a transmitter is monitored through a through type power meter, a short wave transmitter emits signals in a frequency point f1 in the constant amplitude, and a through power P1 displayed by the through type power meter and a voltage V1 received by a short wave receiving antenna in the f1 frequency point are recorded; the signal source and the power amplifier emission and test unit are connected, a work frequency point of the signal source is set as f1, and the signal source is set as continuous wave emission, and a through power P2 displayed by the through type power meter and a voltage V2 received by the short wave receiving antenna in the f1 frequency point are obtained; and an insertion loss IL of an antenna tuner in the work frequency point is calculated. According to the invention, the antenna insertion loss is obtained by conversion of an actual antenna emission power value and a receiving value of the receiving antenna when two different emission sources are adopted for emission. The short wave antenna tuner insertion los measuring device and method can be extensionally applied to a scaled model electromagnetic compatibility test, and the measuring precision is improved.

Description

technical field [0001] The invention belongs to the field of antenna and electromagnetic compatibility test, and in particular relates to a measuring device and method for insertion loss of a short-wave antenna tuner. Background technique [0002] In the short-wave communication system, the operating frequency range reaches 10 times the frequency, and the input impedance presented by the antenna varies greatly with the signal frequency. work or be damaged. [0003] For the transmitter, it is ideal that the output impedance, transmission line characteristic impedance and antenna input impedance are the same value (ie, impedance matching). If the impedance values ​​are inconsistent, part of the high-frequency energy at this point will be reflected back, forming a mismatch loss (also known as reflection loss). Usually, the power output impedance of the transmitter is fixed at 50Ω or 75Ω, the characteristic impedance of the coaxial cable transmission line is also fixed at 50Ω ...

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): G01R27/26
CPCG01R27/26
Inventor 刘义张凯熊波安孝玉张炜
Owner CHINA SHIP DEV & DESIGN 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