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What type of antenna used in the mobile?

Answer is Omni directional antenna used in the mobile. There are various types of antenna used in mobile like, PIFA (Polar Inverted F Antenna) FICA etc

Radar Equation

The power Pr returning to the receiving antenna is given by the radar equation:

P_r = {{P_t G_t A_r \sigma F^4}\over{{(4\pi)}^2 R_t^2R_r^2}}

where

  • Pt = transmitter power
  • Gt = gain of the transmitting antenna
  • Ar = effective aperture (area) of the receiving antenna
  • σ = radar cross section, or scattering coefficient, of the target
  • F = pattern propagation factor
  • Rt = distance from the transmitter to the target
  • Rr = distance from the target to the receiver.

In the common case where the transmitter and the receiver are at the same location, Rt = Rr and the term Rt² Rr² can be replaced by R4, where R is the range. This yields:

P_r = {{P_t G_t A_r \sigma F^4}\over{{(4\pi)}^2 R^4}}.

This shows that the received power declines as the fourth power of the range, which means that the reflected power from distant targets is very, very small.

The equation above with F = 1 is a simplification for vacuum without interference. The propagation factor accounts for the effects of multipath and shadowing and depends on the details of the environment. In a real-world situation, pathloss effects should also be considered.

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Sunday, July 19, 2009

Standard Text Books For JNTU ECE Students

1 Electronics Devices and Circuits U.A.Bakshi A.P.Godse Technical Publications
2 Linear Integrated Circuits D.Roy
3. Op-amps And Linear IC’s Ramakanth.A.Gayakwad
4. Operational Amplifiers and Linear Integrated Ckts R.F.Coughlin and Fredrick Driscall
5 Linear IC Applications U.A.Bakshi A.P.Godse Technical Publications
6. Design With Op-amps &Analog Integrated Circuits sergio Franco
7 Digital Design M.MorrisMano Pearson Publications
8. Digital Logic Design A.P.Godse D.A.Godse Technical Publications
9 Pulse And digital Circuits A.Anand Kumar PHI
10 Pulse And digital Circuits J.Milman and H.Taub McGrawHill
11 Signals & Systems B.P.Lathi BSPublications
12 Signals & Systems Simon Haykins
13 Mechatronics W.Boltan Pearson Education 3rdedition
14 Manuals On Mechatronics —– Cyber Motion Technologies
15 Digital Signal Processors VenkataRamani And Bhaskar Tata McGrawHill
16 Antenna Theory C.A.Balanis John WileyEdu
17 Digital Signal Processing P. RameshBabu Scitech Publications
18 Digital System Design by using VHDL Roth Thomsan India Limited
19 Integrated Electronics Milman And Halkias Tata McGrawHill
20 Electronic Devices and Circuit Theory Boylested Pearson Education
21 Digital Communications Simon Haykins Wiley India Pvt
22 Principles Of communication Systems H.Taub and D.Schiling TMH
23 Communication systems Analog & Digital Singh & Sapre Thomsan India Ltd
24 Modern Analog &Digital Communication B.P.Lathi Oxford reprint 3rdedition,2004
25 Digital & Analog Communication Systems K.Samshanmugam Wiley India PVT
26 Electronic CirCuit Analysis A.P.Godse U.A.Bakshi Technical Publications
27 Electronic CirCuit Analysis K.Lalkishore BSPublications
28 Micro Electronic Circuits Analysis & Design M.H.Rashid Thomsan PWS
29 Optical Fiber Communications Gerd Kaiser(3rd&4thedition) McGrawHill
30 Optical Fiber Communications John.M.Senior PHI
31 Introduction to Radar Systems Skolnik(2nd edition) McGrawHill
32 Introduction to Neural Networks using MATLABS.N. ShivanandamS.N.DeepaS.Sumathi TMH
33 Elements of Artificial Neural Networks KishanMehrotraChelukuri.k.mohanSanjay ranka Pearson Publications
34 Introduction to Artificial Neural Systems J.M.Zurada(3rdedition) Jaico Publishers
35 Electronic Instrumentation(2ndedition) H.S.Kalsi
36 Measuring Systems, Applications&Design E.O.Doeblin(4thedition) McGrawHill
37 Electronic Measurements&Instrumentation K.LalKishore Pearson education
38 Principles of Electrical& Electronic Engineering V.K.Mehta S.Chand&Co
39 Digital Image Processing R.C.Gonzalez&R.E.Woods Pearson publications
40 Fundamentals Of Digital Image Processing A.K.Jain PHI
41 Digital Image Processing using MATLAB R.C.Gonzalez&R.E.Woods Pearson education
42 Digital Image Processing William.K.Pratt(3rdedition) JohnWiley
43 Fundamentals of Electronic Image Processing WeeksJr Spic/IEEESeriesPHI
44 Probability, Random Variables &Random signal Processing Z.Peebles(4thedition)TMH
45 Probabilty, Random Variables&Stochastic Processes AthanasiosPapoulis(4thedition PHI
46 Probabilty,statistics and RandomrocessesP.Guruswamy&K.MurugesonAnuradhaPublishers
47 Stastical Theory of Communication S.P.Engine Xavier New Age Publications
48 Probabilty theory of &stochastic Processand its applications T.VeeraRajan

3 comments:

  1. AnonymousJuly 2, 2011 at 9:21 AM

    Thanks for sharing this great list of books, hat off for your effort, keep sharing...

    ReplyDelete
  2. GurjitApril 22, 2012 at 5:22 PM

    Thanks for sharing Dear.
    Here are some other E books related to ECE for download:
    Free Computer and Electronics Ebooks | Wiki For You

    ReplyDelete
  3. GurjitApril 22, 2012 at 5:23 PM

    Thanks for sharing. Here are also some helpful Ebooks to Download:
    Free Electronics and Computer Ebooks

    ReplyDelete

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