التفاصيل البيبلوغرافية
| العنوان: |
RADIOWAVE PROPAGATION CONCEPTS. |
| المؤلفون: |
Lkvih, Curt A. |
| المصدر: |
Encyclopedia of Electrical & Electronics Engineering; 1999 1st Edition, Vol. 18, p181-187, 7p |
| مصطلحات موضوعية: |
RADIO wave propagation, RADIO waves, ELECTRIC waves, RADIOS, RADIO technology equipment, OPTICS |
| مستخلص: |
This article presents information on various concepts of radiowave propagation. The concept of radiowave propagation allows dividing the total system problem into three separate parts: the transmitter or signal source, the receiver, and propagation. Thus propagation is defined as what happens between the source and the receiver. For this concept to be valid, the distances must be such that far-field criteria for the antennas are satisfied; this allows separating antenna effects from propagation effects. The simplest propagation mechanism is direct propagation in which the signal travels from the emitter to the receiver unaffected by any propagation medium, except possibly for attenuation and mild refraction. |
| قاعدة البيانات: |
Supplemental Index |
