Antennas:

• acceptance pattern
• antenna
• aperiodic antenna
• aperture
• aperture illumination
• aperture-to-medium coupling loss
• beam
• beam diameter
• beam divergence
• beam steering
• beamwidth
• biconical antenna
• billboard antenna
• boresight
• Cassegrain antenna
• collinear antenna array
• corner reflector
• counterpoise
• departure angle
• despun antenna
• diplex operation
• dipole antenna
• directional antenna
• direct ray
• effective antenna gain contour (of a steerable satellite beam)
• effective boresight area (of a steerable satellite beam)
• effective height
• effective isotropically radiated power (e.i.r.p.)
• effective monopole radiated power (e.m.r.p.) (in a given direction)
• effective radiated power (e.r.p.) (in a given direction)
• fan-beam antenna
• far-field radiation pattern
• far-field region
• feed
• Fresnel zone
• front-to-back ratio
• ground plane
• helical antenna
• heterodyne repeater
• horn
• hybrid coupler
• image antenna
• intermediate-field region
• isotropic antenna
• lobe
• log-periodic (LP) antenna
• loop
• main lobe
• multicoupler
• multi-element dipole antenna
• natural frequency
• near-field region
• null
• omnidirectional antenna
• orthomode transducer
• parabolic antenna
• parasitic element
• periodic antenna
• periscope antenna
• phased array
• planar array
• propagation mode
• radiation pattern
• radiation resistance
• radio beam
• radio horizon
• radio horizon range (RHR)
• radio range
• reference antenna
• reflective array antenna
• rhombic antenna
• shadow loss
• side lobe
• single-polarized antenna
• skip zone
• sky wave
• slewing
• slot antenna
• space diversity
• spillover
• spot beam
• test antenna
• uniform linear array
• whip antenna
• Yagi antenna