ppt for antenna design in gsm band

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    ICROSTRIP ANTENNA FOR

    GS BAND

    PRESENTED BY

    Sourabh Rana

    01916400713

    PRESENTATION

    M.TECH(ECE)

    ON

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    Overview of Microstrip AntennasAlso called patch antennas

    One of the most usefu antennas atm!"ro#a$e fre%uen"!es &f ' 1 ()*+,

    -t "ons!sts of a meta ./at"h on to/ of a

    roun2e2 2!ee"tr!" substrate, The /at"h ma be !n a $ar!et of sha/esbut re"tanuar an2 "!r"uar are the most"ommon,

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    Advantages of Microstrip Antennas

    5o# /roe &"an e$en be ."onforma+,

    Eas to fabr!"ate &use et"h!n an2/hotot!thora/h+,

    Eas to fee2 &"oa!a "abe m!"rostr!/ !ne

    et",+ ,

    Eas to use !n an arra or !n"or/orate #!thother

    m!"rostr!/ "!r"u!t eements,

    Patterns are some#hat hem!s/her!"a #!th a

    mo2erate 2!re"t!$!t &about 68 2B !st/!"a+,

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    Disadvantages of Microstrip

    Antennas5o# ban2#!2th &but "an be !m/ro$e2

    b a $ar!et of te"hn!%ues+,Ban2#!2ths of a fe# /er"ent aret/!"a,

    E:"!en" ma be o#er than #!thother antennas, E:"!en" !s !m!te2 b"on2u"tor an2 2!ee"tr!" osses an2

    b surfa"e8#a$e oss,

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    Basic Principles of Operation

    The /at"h a"ts a//ro!mate as a resonant"a$!t &short "!r"u!t #as on to/ an2bottom o/en8"!r"u!t #as on the s!2es+,

    -n a "a$!t on "erta!n mo2es are ao#e2

    to e!st at 2!;erent resonant fre%uen"!es, -f the antenna !s e"!te2 at a resonant

    fre%uen" a stron e2 !s set u/ !ns!2e the"a$!t an2 a stron "urrent on the&bottom+surfa"e of the /at"h, Th!s /ro2u"ess!n!"ant ra2!at!on &a oo2 antenna+,

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    substrates

    mater!a remar