Title :
Query on reciprocity between ARP and ATP
Author :
Shu Xian-rong ; He Bing-fa ; Long Wei-jun
Author_Institution :
Nat. Key Lab. of Antenna & Microwave Technol., Nanjing Res. Inst. of Electron. Technol., Nanjing
Abstract :
The conclusion that an antenna´s amplitude receiving pattern (ARP) and its amplitude transmitting pattern (ATP) are equal obtained from the electromagnetic field reciprocity principle has premises easily ignored. Analysis on received polarization electromagnetic wave shows that the above conclusion is queried. The antenna under test (AUT) will be faced with different polarization mismatching status of itself and the testing antenna in reception or transmission, so that the form of ARP and ATP are generally not equal. Therefore, the reciprocity between ARP and ATP of AUT is not tenable. Lastly, correct pattern measurement of linear and circular polarization antenna is given.
Keywords :
antenna radiation patterns; electromagnetic fields; linear antennas; polarisation; amplitude receiving pattern; amplitude transmitting pattern; antenna under test; circular polarization antenna; electromagnetic field reciprocity principle; linear polarization antenna; ARP/ATP; polarization electromagnetic wave reception; polarization match factor; the reciprocity principle; undistorted testing methods of antenna pattern;
Conference_Titel :
Radar Conference, 2009 IET International
Conference_Location :
Guilin
Print_ISBN :
978-1-84919-010-7
