Method for determining transmit-receive isolation of phased array antenna
A phased array antenna, transceiver isolation technology, applied in the field of communications, can solve the problems that cannot be used to determine the phased array antenna transceiver isolation, inapplicability, etc., to achieve the effect of simple determination process, easy engineering implementation, and accurate results
Active Publication Date: 2014-03-19
SPACE STAR TECH CO LTD
View PDF5 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, for a phased array antenna composed of multiple elements, the above method is not applicable
[0004] The Chinese patent application with the application number CN201110052433.8 discloses a method for determining the isolation degree of antennas. This method uses the S-parameters of the multi-port network to determine the isolation degree between antennas, but this method can only be used to determine the isolation degree of multi-antenna systems. The isolation between each two single-port antennas cannot be used to determine the transmit-receive isolation of the phased array antenna
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
[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0037] The phased array antenna is composed of multiple array elements, and the beam pointing and the shape of the array pattern can be controlled by changing the excitation amplitude and phase of each array element. When a phased array antenna is used in a communication system, the isolation between the transmitting and receiving antennas is related to the beam state of the phased array antenna.
[0038] The present invention is based on the multi-port network model, utilizes the transmission parameter matrix from the transmitting array unit (referred to as the transmitting array unit) to the receiving array unit (referred to as the receiving array unit), and determines the port excitation voltage corresponding to the fixed beam state of the transmitting array unit The power of the outgoing wave signal at the port of each receiving a...
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
Disclosed is a method for determining transmit-receive isolation of a phased array antenna, the method including (1) enabling equivalence of a transmitting array and a receiving array to a multi-port microwave network, with feeding ports of transmitting and receiving array elements as ports of the multi-port network; (2) determining a transmission parameter matrix Cj, i from the i-th transmitting array element to the j-th receiving array element; (3) determining outgoing wave voltage of a corresponding port to the j-th receiving array element according to relative excitation voltage and a transmission parameter matrix of a corresponding port to the i-th transmitting array element; and (4) according to the outgoing wave voltage of the corresponding port to the j-th receiving array element, determining corresponding outgoing wave signal power, and by combination with feeding power of the transmitting array, determining the isolation from the transmitting array to the receiving array elements. The method provided by the invention is applicable to determination of the transmit-receive isolation of the phased array antenna under a variety of beam states, and is simple in process, accurate in result and easy in project implementation.
Description
technical field [0001] The present invention relates to the antenna technology in the communication field, in particular to a method for determining the transceiver isolation of a phased array antenna. Background technique [0002] In the communication system, the full-duplex system of transmitting and receiving works at the same time is mostly used. In order to avoid the interference of the transmitting device on the receiving device in the system, it is necessary to focus on the isolation of the transmitting and receiving of the system. [0003] The determination of the isolation between the transmitting antenna and the receiving antenna is an important indicator of the system's transceiver isolation. When the distance between the transmitting antenna and the receiving antenna satisfies the far-field condition, the transmit-receive isolation can be approximately determined by the Fries transfer equation; when the distance between the transmitting antenna and the receiving ...
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 IPC IPC(8): H04B7/04H04B17/00H04B17/12
Inventor 王国龙董涛韩琳熊伟
Owner SPACE STAR TECH CO LTD