main-lobe beamwidth

См. также в других словарях:

• Main lobe — A polar antenna radiation diagram. The radial distance from the center represents signal strength. The main lobe, or main beam, of an antenna radiation pattern is the lobe containing the maximum power. This is the lobe that exhibits the greatest… …   Wikipedia

• Beamwidth — In telecommunication, the term beamwidth has the following meanings: 1. In the radio regime, of an antenna pattern, the angle between the half power ( 3 dB) points of the main lobe, when referenced to the peak effective radiated power of the main …   Wikipedia

• Rhombic antenna — signal gathering action compared to other end fire, backfire and traveling wave types. A rhombic antenna is a broadband directional antenna co invented by Edmond Bruce and Harald Friis,[1] mostly commonly used in HF (high frequency, also called… …   Wikipedia

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• Directivity — Diagram showing directivity In electromagnetics, directivity is a figure of merit for an antenna. It measures the power density the antenna radiates in the direction of its strongest emission, versus the power density radiated by an ideal… …   Wikipedia

• Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia