| 释义 |
directional antenna
directional antennan. An antenna that receives or sends signals most effectively in a particular direction.Thesaurus| Noun | 1. | directional antenna - an antenna that transmits or receives signals only in a narrow angleantenna, transmitting aerial, aerial - an electrical device that sends or receives radio or television signalsarray - an arrangement of aerials spaced to give desired directional characteristicsdish aerial, dish antenna, saucer, dish - directional antenna consisting of a parabolic reflector for microwave or radio frequency radiationyagi, Yagi aerial - a sharply directional antenna |
directional antenna
directional antenna[də′rek·shən·əl an′ten·ə] (electromagnetism) An antenna that radiates or receives radio waves more effectively in some directions than others. directional antennaAn antenna or aerial that radiates and receives signals mainly from one direction. For terrestrial radio communications, directionality in an azimuth or a horizontal plane is important. Directional antennae are either monodirectional, bidirectional, or omnidirectional (i.e., their maximum gain is either in one or two opposing directions or in all directions in one plane). Sophisticated directional antennae provide a large gain in their favored direction. A group of antennae arranged for this purpose is called an antenna array.AcronymsSeedrug abusedirectional antenna
Related to directional antenna: omnidirectional antennaWords related to directional antennanoun an antenna that transmits or receives signals only in a narrow angleRelated Words- antenna
- transmitting aerial
- aerial
- array
- dish aerial
- dish antenna
- saucer
- dish
- yagi
- Yagi aerial
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