A Method for Evaluating Phase Noise Index of Microwave Receiver
A microwave receiver and phase noise technology, which is applied in the intersecting field of optoelectronic technology and microwave communication technology, can solve the problem that it is not suitable to measure the phase noise of microwave receiver
Active Publication Date: 2021-07-20
HUNAN INST OF TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] At present, there are many techniques related to phase noise measurement, such as: direct spectrum analyzer method, frequency discrimination method, phase detection method, dual-channel cross-correlation method, etc. These methods have different characteristics and different scopes of application. However, they Both are test methods for measuring the phase noise of signal sources, which are not suitable for measuring the phase noise of microwave receivers. In the field of communication, there are no good standard methods and commercial instruments for measuring phase noise of microwave receivers.
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
[0031] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention.
[0032] figure 1 It is the basic frame structure of microwave receivers, which is universal for electronic and photonic microwave receivers. According to the structural characteristics of the receiver, the receiver can be divided into a microwave link and a frequency mixing circuit. Among them, the circuit formed by cascading all the devices at the front end of the mixer is called a microwave link; the microwave link realizes the microwave signal Transmission and processing; the circuit composed of mixer, local oscillator source and filter is the frequency mixing circuit, which realizes the frequency mixing of microwave signal and local oscillator source, and realizes the intermediate frequ...
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
A method for evaluating the phase noise index of a microwave receiver, which relates to the cross field of optoelectronic technology and microwave communication technology, the method for evaluating the phase noise index of a microwave receiver divides the microwave receiver into a microwave link and a frequency mixing circuit, and a microwave link It is a link formed by cascading all the devices at the front end of the mixer. The mixing circuit is a circuit composed of a mixer, a local oscillator and a filter. The sum of the phase noise of the microwave link and the mixing circuit is Total phase noise of a microwave receiver. The invention breaks the traditional idea of testing phase noise of equipment, adopts calculation method to effectively evaluate the phase noise index of microwave receivers, is simple and fast, is suitable for electronic and photonic microwave receivers, and is suitable for application and promotion in engineering.
Description
technical field [0001] The invention relates to the intersecting field of optoelectronic technology and microwave communication technology, in particular to a method for evaluating the phase noise index of a microwave receiver. Background technique [0002] As an important part of the communication system, the performance of the receiver has a great impact on various indicators of the communication system. As an important index of microwave receiver, phase noise (referred to as phase noise) refers to the random change of the phase of the system output signal caused by the receiver (such as various microwave devices) under the action of various noises. The degree of carrier phase interference. [0003] At present, there are many techniques related to phase noise measurement, such as: direct spectrum analyzer method, frequency discrimination method, phase detection method, dual-channel cross-correlation method, etc. These methods have different characteristics and different s...
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): H04B17/29H04B1/10
CPCH04B1/1027H04B17/29
Inventor 洪俊李祖林严亚周刘海波王小虎张松华
Owner HUNAN INST OF TECH