2-18GHz large-dynamic detection logarithm video amplifier
A technology of logarithmic amplification and detection logarithm, applied in the field of 2-18GHz large dynamic detection logarithmic video amplifier, can solve the problems of large zero level fluctuation, poor temperature stability, small linear dynamic range, etc., to expand the radio frequency bandwidth , Good temperature adaptability, the effect of eliminating zero temperature drift
Active Publication Date: 2018-05-18
YANGZHOU HAIKE ELECTRONICS TECH CO LTD
View PDF11 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Constrained by the gain-bandwidth product of the video section, this large gain will affect the amplifier rise time and recovery time
In the existing products, there are disadvantages: 1) The working bandwidth is narrow, generally 2-8GHz or 6-18GHz; 2) The linear dynamic range is small, generally about 60dB; 3) The temperature stability is poor, and its zero point level is at -40℃~+85℃ temperature changes greatly
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] combine figure 1 , figure 2 , The 2-18GHz large dynamic detection logarithmic video amplifier of the present invention is composed of a radio frequency front end, a logarithmic amplifier circuit, and a synthesis circuit. The main technical indicators are: 1. Working frequency: 2~18GHz; 2. Tangent sensitivity ≤ -70dBm; 3. Linear dynamic range -65dBm~5dBm; 4. Logarithmic slope: 60±2mV / dB; 5. Logarithmic linearity: ≤±1; 6. Frequency flatness: ≤±1.5dB; 7. Pulse rising edge: ≤25nS; 8. Pulse falling edge: ≤150nS; 9. Working temperature range: -40~+85℃; 10. Size: (length) 89mm×(width) 63.5mm×(height) 15mm; 11. Power consumption: ≤7.5W (calculated according to power supply ±12V) 12. Weight: ≤140g;
[0038] combine figure 2 , The RF front-end circuit adopts the dynamic design of broadband expansion, and the specific method is as follows: the input stage first passes through a 2-18GHz ultra-wideband microstrip power divider, and divides the signal power into two equal paths. ...
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
Login to view more Abstract
The invention discloses a 2-18GHz large-dynamic detection logarithm video amplifier. The device comprises a radio frequency front end, a logarithm amplifier circuit, and a synthesis circuit; the radiofrequency front end comprises an ultra-broadband micro-band power divider, a broadband low-noise amplifier and a wave detector; the radio frequency front end equally divides the input radio frequencysignal into two paths, one path enters a low-noise amplifier link to be amplified, and performs the detection output, the other path directly enters the wave detector and performs the detection output; the logarithm amplifier circuit outputs and synthesizes two paths of detection video signals output by the radio frequency front end after performing the logarithm amplification on the same; a temperature compensation circuit is used for performing temperature compensation on the zero drift under the logarithm temperature change; the synthesis circuit comprises an addition circuit and an amplification circuit; the addition circuit performs adding and synthesis on the signal after the logarithm amplification and the temperature compensation voltage, and the amplification circuit amplifies the synthesized signal to obtain a final video output signal. The 2-18GHz large-dynamic detection logarithm video amplifier disclosed by the invention has the advantages of being large in radio frequency broadband range, high in sensitivity, and good in working temperature adaptation.
Description
technical field [0001] The invention relates to the technical field of broadband radio frequency signal power measurement, in particular to a 2-18GHz large dynamic detection logarithmic video amplifier. Background technique [0002] Detecting Logarithmic Video Amplifiers (DLVA) In modern receiving systems, the need to handle high density pulses with narrow pulses and large amplitudes makes the use of logarithmic amplifiers possible. Simply put, this kind of amplifier condenses the input signal with a large dynamic range into a sufficiently small and easy-to-handle signal through the logarithmic conversion function. The result of the logarithmic conversion is to make the output voltage of the logarithmic amplifier proportional to the power of the input signal. In most cases, a logarithmic amplifier is used as an amplitude detector, and because its output voltage is proportional to the input signal power, the amplitude information displayed by the amplifier is often more usef...
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
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14
CPCH04N5/148
Inventor 张得才韦炜李亮李希密陈坤
Owner YANGZHOU HAIKE ELECTRONICS TECH CO LTD
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
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