माइक्रोवेव

स्वतन्त्र विश्वकोश, नेपाली विकिपिडियाबाट
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A telecommunications tower with a variety of dish antennas for microwave relay links on Frazier Peak, Ventura County, California. The apertures of the dishes are covered by plastic sheets (radomes) to keep out moisture.
The atmospheric attenuation of microwaves and far infrared radiation in dry air with a precipitable water vapor level of 0.001 mm. The downward spikes in the graph correspond to frequencies at which microwaves are absorbed more strongly. This graph includes a range of frequencies from 0 to 1 THz; the microwaves are the subset in the range between 0.3 and 300 gigahertz.

माइक्रोवेव सूक्ष्मतरंग  विद्युतचुम्बकीय हो with wavelengths ranging from one meter to one millimeter; with frequencies between ३०० MHz[convert: अज्ञात एकाई] and ३०० GHz[convert: अज्ञात एकाई].[१][२][३][४][५] विभिन्न स्रोतहरूले माइक्रोसेन्सको रूपमा विभिन्न फ्रिक्वेन्सी दायराहरू परिभाषित गर्दछ; माथिको विस्तृत परिभाषाले UHF र EHF दुवै (मिलीमीटर मीटर) दुवै बैंड समावेश गर्दछ। रेडियो इन्जिनियरिङमा थप सामान्य परिभाषा 1 र 100 गीगा (300 र 3 मिमी बीच तरंगदैर्ध्य) बीचको दायरा हो। सबै अवस्थामा, माइक्रोवेभमा सम्पूर्ण SHF ब्यान्ड (3 देखि 30 गीगा, वा 10 देखि 1 सेमी) कम्तिमा कम्तीमा समावेश गर्दछ। माइक्रोवेव दायरामा आवृत्तिहरू प्राय: IEEE रडार बैंड पदनामहरूद्वारा: S, C, X, Ku, K, Ka Ka, वा यस्तै NATO वा EU को पदनामहरू द्वारा उल्लेख गरिन्छ।

References[सम्पादन गर्ने]

  1. Hitchcock, R. Timothy (2004). Radio-frequency and Microwave Radiation. American Industrial Hygiene Assn.. pp. 1. . https://books.google.com/books?id=0TUIQ9-Ap5cC&pg=PA1&dq=microwave. 
  2. Kumar, Sanjay; Shukla, Saurabh (2014). Concepts and Applications of Microwave Engineering. PHI Learning Pvt. Ltd. pp. 3. . https://books.google.com/books?id=GY9eBAAAQBAJ&pg=PA3&dq=microwave. 
  3. Jones, Graham A.; Layer, David H.; Osenkowsky, Thomas G. (2013). National Association of Broadcasters Engineering Handbook, 10th Ed.. Taylor & Francis. pp. 6. . https://books.google.com/books?id=K9N1TVhf82YC&pg=PA6&dq=microwave. 
  4. Pozar, David M. (1993). Microwave Engineering Addison–Wesley Publishing Company. आइएसबिएन ०-२०१-५०४१८-९.
  5. Sorrentino, R. and Bianchi, Giovanni (2010) Microwave and RF Engineering, John Wiley & Sons, p. 4, आइएसबिएन ०४७०६६०२१X.