DocumentCode :
1049215
Title :
A Novel TM 
–TE 
Circularly Polarized (CP) Mode Converter
–TE Circularly Polarized (CP) Mode ConverterAuthor :
Yuan, Cheng-Wei ; Zhong, Hui-Huang ; Liu, Qing-Xiang ; Qian, Bao-Liang
Author_Institution :
Coll. of Optoelectr. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Volume :
16
Issue :
8
fYear :
2006
Firstpage :
455
Lastpage :
457
Abstract :
A novel mode converter that converts a TM01 mode to a CP TE11 mode was developed. In the converter, the TM01 mode is transformed into a coaxial transverse electric and magnetic (TEM) mode first, then the coaxial TEM mode is split in space into multiple TE11 sector waveguide modes by eight plates in the coaxial waveguide, which further subject the TE11 sector waveguide modes to different signal paths and hence effectively convert the TEM mode into a CP TE11 mode. A mode converter at 4GHz was designed. The conversion efficiency of TM01-to-TE11 is 99% at center frequency with an axial ratio of 0.7dB. Over the frequency range of 3.8-4.3GHz, the conversion efficiency exceeds 90%, and the axial ratio is less than 2.7dB. A good agreement between experiments and simulations was observed
Keywords :
coaxial waveguides; convertors; polarisation; 3.8 to 4.3 GHz; TE11 mode; TM01 mode; axial ratio; circular polarization; circularly polarized mode converter; coaxial transverse electric mode; coaxial transverse magnetic mode; coaxial waveguide; multiple sector waveguide; Antenna radiation patterns; Apertures; Coaxial components; Frequency conversion; High power microwave generation; Log periodic antennas; Microwave generation; Polarization; Prototypes; Tellurium; Circular polarization; high-power microwave (HPM); mode converter; waveguides;
fLanguage :
English
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Publisher :
ieee
ISSN :
1531-1309
Type :
jour
DOI :
10.1109/LMWC.2006.879486
Filename :
1661642
Link To Document :
