Third International Conference on Antennas and Propagation: ICAP 83: 12-15 April 1983, Norwich, United Kingdom |
Common terms and phrases
amplitude analysis angle antenna array aperture efficiency applications approximation axial axis band beamwidth boresight calculated cassegrain antenna circular clean beams co-polar coefficients components configuration cross-polar diameter dielectric cone diffraction dipole direction effects efficiency EISCAT elements endfire equation excitation experimental far-field feed feedhorn frequency function gain geometry ground plane H-plane helical antenna helix horn IEEE IEEE Trans impedance input integral length linear main reflector matrix measured method Microstrip Antennas microwave millimetre mode mutual coupling obtained offset reflector optics optimization parabolic reflector parameters performance phase error polarisation polarization predicted problem radar radiation fields radiation pattern ratio reflection reflector antenna region resonant return loss satellite scan scattering shape shown in Figure side lobe sidelobe sidelobe level slot solution space structure subreflector substrate surface symmetry taper technique theoretical tion values vector VSWR wave waveguide wavelength