function?[bandwidth?pm]?=?pll_simulation（cap?res?ipump?vco_sensitivity?fout?fcomp?）

%?Simulates?2nd?3rd?and?4th?order?PLL?loops?for?the?topologies?shown
%?below?using?basic?control?systems?theory.??This?is?useful?for?design
%?verification.??
%
%?Input?
%???????-?cap?is?the?capacitors?of?the?loop?in?Farads?[C1?C2?C3?C4].??If
%???????????these?components?are?not?present?in?the?loop?set?their?value
%???????????to?zero.
%???????-?res?is?the?resistors?of?the??loop?in?Ohms?[?R2?R3?R4].??If
%???????????these?components?are?not?present?in?the?loop?set?their?value?to?zero.??
%???????-?order?of?the?loop?either?23?or?4.
%???????-?ipump?is?the?charge?pump?current?in?Amperes
%???????-?vco_sensitivity?is?the?VCO?sensitivity?in?Hertz/Volt
%???????-?fout?is?the?output?frequency?in?Hertz
%???????-?fcomp?is?the?comparison?frequency?in?Hertz
%??????
%?Output??
%???????-?bandwidth?is?the?open?loop?bandwidth?in?Hertz
%???????-?pm?is?the?phase?margin?in?degrees
%
%?The?methods?used?here?are?derived?from?those?presented?in?Dean?Banerjee‘s
%?Book?“PLL?Performance?Simulation?and?Design“?4th?Ed?available?at
%?National?Semiconductors?site?www.national.com.??Most?of?the?work?is
%?derived?from?Chapter?8?pp.43-47?and?Chapter?9?pp.?48-53.
%
%?
%?Loop?Topologies
%?2nd?Order
%????????+??_____???????????????????????????????????______
%?fcomp?-->|Phase|----------------------------------|?VCO?|---->fout
%??????????|Det.?|?????|??????|?????????????????????|?????|??|
%???????????-----??????|??????|??????????????????????-----???|
%????????????^?-??????C1?????R2??????????????????????????????|
%????????????|?????????|??????|??????????????????????????????|
%????????????|????????GND????C2??????????????????????????????|
%????????????|????????????????|??????????????????????????????|
%????????????|???????????????GND?????????_______?????????????|
%????????????----------------------------|?1/N?|--------------
%????????????????????????????????????????-------????
%
%?3rd?Order?
%????????+??_____???????????????????????????????????______
%?fcomp?-->|Phase|-----------------R3---------------|?VCO?|---->fout
%??????????|Det.?|?????|??????|?????????|???????????|?????|??|
%???????????-----??????|??????|?????????|????????????-----???|
%????????????^?-??????C1?????R2????????C3????????????????????|
%????????????|?????????|??????|?????????|????????????????????|
%????????????|????????GND????C2????????GND???????????????????|
%????????????|????????????????|??????????????????????????????|
%????????????|???????????????GND?????????_______?????????????|
%????????????----------------------------|?1/N?|--------------
%????????????????????????????????????????-------????
%
%
%?4th?Order
%????????+??_____???????????????????????????????????______
%?fcomp?-->|Phase|-----------------R3------R4-------|?VCO?|---->fout
%??????????|Det.?|?????|??????|?????????|?????|?????|?????|??|
%???????????-----??????|??????|?????????|?????|??????-----???|
%?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1538??2009-05-20?02:25??license.txt
?????文件????????6588??2009-04-07?15:39??pll_simulation.m
?????文件????????2691??2009-04-07?15:39??pll_synth_2nd_order.m
?????文件????????3321??2009-04-07?15:39??pll_synth_3rd_order.m
?????文件????????4091??2009-04-07?15:39??pll_synth_4th_order.m