Title :
Design of thick frequency selective surfaces with complex apertures: dichroics with cross-shaped and stepped rectangular apertures
Author :
Epp, L.W. ; Chen, J.C. ; Stanton, P.H. ; Jorgenson, R.E.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Recent work has shown the successful demonstration of design techniques for straight, rectangular apertures at an incident angle of 30 degrees . In the present work, some of the cases in which the straight rectangular shape may have limited usefulness are addressed. For example, grating lobes become a consideration when the bandwidth required to include the new frequency of 7.165 GHz conflicts with the desired incident angle of 30 degrees . For this case, the cross shape´s increased packing density and bandwidth could make it desirable. When a sharp frequency response is required to separate two closely spaced Ka-band frequencies, the stepped rectangular aperture might be advantageous.<>
Keywords :
antenna accessories; antenna theory; dichroism; 7.165 GHz; Deep Space Network antennas; Ka-band; SHF; complex apertures; cross-shaped apertures; dichroic plates; stepped rectangular apertures; thick frequency selective surfaces; Apertures; Bandwidth; Frequency selective surfaces; Gratings; Laboratories; Polarization; Propulsion; Shape; Space technology; Space vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221500
