A Real-time Generation Method of Frequency Response Compensation Data Based on Static RAM
A technology of frequency response compensation and compensation data, which is applied in the field of testing, can solve problems such as slow speed, and achieve the effect of improving frequency response indicators, test speed and test quality
Active Publication Date: 2017-07-11
CHINA ELECTRONIS TECH INSTR CO LTD
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In order to solve the problem of slow speed of the existing method for calculating compensation data based on control software, the present invention proposes a real-time generation method of frequency response compensation data based on static RAM. By using this method, no control software is required to participate, and the The search and interpolation of RAM data calculates the frequency response compensation data, which greatly improves the switching speed of the instrument
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 Construction
[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, 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.
[0035] The present invention proposes a static RAM-based method for generating frequency response compensation data for high-speed variable frequency signals in real time. The method is based on static RAM for storing frequency response compensation data, FPGA and related auxiliary circuits for searching frequency response compensation data in real time.
[0036] The basic principle of the real-time generation method of frequency response compensation data of 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
Login to View More Abstract
The invention provides a method of real-time generation of frequency response compensation data based on a static RAM (Random Access Memory). The method is based on the static RAM used for storing the frequency response compensation data, an FPGA (Field Programmable Gate Array) used for searching the frequency response compensation data in real time and an auxiliary circuit. The method comprises the following steps of downloading the frequency response compensation data in the full-band and full-power range in the static RAM after an instrument is electrified and started; and when the state of a complete machine changes, obtaining an index address of the corresponding frequency response compensation data in real time through a comparison program in the FPGA according to the frequency and the preset power which are corresponding to the state of the current arbitrary sequence, and starting a reading timing sequence to transmit the compensation data corresponding to the address in a corresponding DAC (Digital to Analog Converter) interface circuit. According to the method, the frequency response compensation data can be generated in real time to meet the requirements on frequency response compensation control when a broadband signal generator quickly carries out status switching, in particular continuous status switching at magnitude of hundreds of nanoseconds.
Description
technical field [0001] The invention relates to the technical field of testing, in particular to a method for generating real-time frequency response compensation data based on a static RAM. Background technique [0002] In broadband signal generators, in order to achieve higher power flatness, baseband in-band frequency response, and IQ modulation accuracy, etc., frequency response compensation in a wide frequency band is usually required. In the traditional signal generator based on the phase-locked synthesis system, the frequency response compensation is generally calculated by the control software of the whole machine according to the calibration data of the frequency response compensation, the current carrier frequency, the current carrier power and other parameters to calculate the frequency corresponding to the current state. Compensation data. For a new type of signal generator that requires a fast switching speed, since the state switching time of the whole machine...
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 Patents(China)
IPC IPC(8): H03K5/13
Inventor 左永锋樊晓腾李增红刘盛徐明哲王鹏时慧蒋方文
Owner CHINA ELECTRONIS TECH INSTR CO LTD