08/03/2007 _ Persistence

how u do anything is how u do everything? true???

I still dont believe it.

coz----

I'm not satisfied with myself currently.

and, I believe I can change.

I can change.

Once Again,

I give it another chance to try out.

be the ideal me.

starting 08/03/2007

----------------------------------------------------------------------

I make crappy decisions at times,

however, as long as a plan IS there,

DO TAKE IT INTO ACTION.

Remember, self-esteem fades away when self-disappointment happens again and again.

Once self-esteem is gone, that REALLY is too late...

SPICE Model Parameter of MOSFET

from :http://www.seas.upenn.edu/~jan/spice/spice.MOSparamlist.html



LEVEL         Model type (1, 2, or 3)                            1                          
L             Channel length                    meters           DEFL                       
W             Channel width                     meters           DEFW                       
LD            Lateral diffusion length          meters           0                          
WD            Lateral diffusion width           meters           0                          
VTO           Zero-bias threshold voltage       Volts            0                          
KP            Transconductance                  Amps/Volts2      2E-5                       
GAMMA         Bulk threshold parameter          Volts1/2         0                          
PHI           Surface potential                 Volts            0.6                        
LAMBDA        Channel-length modulation         Volts-1          0                          
             (LEVEL = 1or 2)                                                               
RD            Drain ohmic resistance            Ohms             0                          
RS            Source ohmic resistance           Ohms             0                          
RG            Gate ohmic resistance             Ohms             0                          
RB            Bulk ohmic resistance             Ohms             0                          
RDS           Drain-source shunt resistance     Ohms             [[infinity]]               
RSH           Drain-source diffusion sheet      Ohms/square      0                          
             resistance                                                                    
IS            Bulk p-n saturation current       Amps             1E-14                      
JS            Bulk p-n saturation/current area  Amps/meters2     0                          
PB            Bulk p-n potential                Volts            0.8                        
CBD           Bulk-drain zero-bias p-n          Farads           0                          
             capacitance                                                                   
CBS           Bulk-source zero-bias p-n         Farads           0                          
             capacitance                                                                   
CJ            Bulk p-n zero-bias bottom         Farads/meters2   0                          
             capacitance/length                                                            
CJSW          Bulk p-n zero-bias perimeter      Farads/meters    0                          
             capacitance/length                                                            
MJ            Bulk p-n bottom grading                            0.5                        
             coefficient                                                                   
MJSW          Bulk p-n sidewall grading                          0.33                       
             coefficient                                                                   
FC            Bulk p-n forward-bias                              0.5                        
             capacitance coefficient                                                       
CGSO          Gate-source overlap               Farads/meters    0                          
             capacitance/channel width                                                     
CGDO          Gate-drain overlap                Farads/meters    0                          
             capacitance/channel width                                                     
CGBO          Gate-bulk overlap                 Farads/meters    0                          
             capacitance/channel width                                                     
NSUB          Substate doping density           1/centimeter3    0                          
NSS           Surface-state density             1/centimeter2    0                          
NFS           Fast surface-state density        1/centimeter2    0                          
TOX           Oxide thickness                   meters           [[infinity]]               
TPG           Gate material type: + 1 =                          + 1                        
             opposite of substrate, - 1 =                                                  
             same as substrate,   0 =                                                      
             aluminum                                                                      
XJ            Metallurgical junction depth      meters           0                          
                  
UCRIT         Mobility degradation critical     Volts/centimete  1E4                        
             field (LEVEL = 2)                 r                                           
UEXP          Mobility degradation exponent                      0                          
             (LEVEL = 2)                                                                   
UTRA          (Not Used) mobility degradation                                               
             transverse field coefficient                                                  
VMAX          Maximum drift velocity            meters/seconds   0                          
NEFF          Channel charge coefficient                         1                          
             (LEVEL = 2)                                                                   
XQC           Fraction of channel charge                         1                          
             attributed to drain                                                           
DELTA         Width effect on threshold                          0                          
THETA         Mobility modulation (LEVEL = 3)   Volts-1          0                          
ETA           Static feedback (LEVEL = 3)                        0                          
KAPPA         Saturation field factor                            0.2                        
             (LEVEL=3)                                                                     
KF            Flicker noise coefficient                          0                          
AF            Flicker noise exponent                             1   

body effect

voltage control current source = gm*V_bs

partial derivative V_th/ partial derivative V_sb = yita

Great Tech. Advance---goodbye wires from MIT

from: http://web.mit.edu/newsoffice/2007/wireless-0607.html

Goodbye wires…

MIT team experimentally demonstrates wireless power transfer, potentially useful for powering laptops, cell phones without cords

Franklin Hadley, Institute for Soldier Nanotechnologies
June 7, 2007

Imagine a future in which wireless power transfer is feasible: cell phones, household robots, mp3 players, laptop computers and other portable electronics capable of charging themselves without ever being plugged in, freeing us from that final, ubiquitous power wire. Some of these devices might not even need their bulky batteries to operate.

..............

MOS Single Stage Amp.

from Razavi

parameters need to be considered: transconductance gm, linearity, voltage swing, (small signal) gain Av.

common-source (CS).

1. CS with Resistive load

problems:
1.1 nonlinearity (gm is input-dependent, and furthermore voltage gain)
1.2. couldn't get stable gain because of difficulty in getting precise Rd (it's difficult
to fabricate resistors with tightly-controlled values or a reasonable physical \size)

trade off:
1. with constant input, to get high gain, Rd need to increase, however, this lead
to smaller voltage swing at the output (transistor could get into triode region),
also, this leads to greater time constant (Speed) at the output.

2. CS with Diode-connected load
2.1 Diode-connected load behaves like a two-terminal resistor (proof it and calculate the
equivalent resistance using small sig. model) 1/(gm +gmb) Parall. r0 . therefore, prob. 1.2 solved.
2.2 small signal gain Av = Vout/Vin is independent of input voltage and is a weak function of device dimensions, therefore 1.1 is partially solved.

Prob,
2.3 trade-off exists: increeasing load resistance limits output voltage swing.
2.4 gm is still nonlinear though

3.CS with Current Source Load (could be a current mirror)
3.1 it bears all adavantages of CS with diode-connected load.
3.2 output impedenace and minimum required |Vds| are less strongly coupled. Meaning r_top can be increased ( by increasing L) without too much concern of lowering V_ds_bottom into triode region.

Prob.
3.3 Voltage_drain is not well defined. need a feedback loop to froced it to a known value
3.4 Increasing L necessitates increasing W (otherwise, Vgs - Vth increases, for a given Drain current), which increase capacitance at the output node.
3.5 gm is nonlineart

4. CS Stage with Source Degeneration (Rs between Source_bot and ground)
4.1 Calculate Gm (I_drain/V_IN, not gm) , and when V_in is large, Gm approach to a specific value (1/Rs). prob 3.5 solved at large input voltage.
4.2 Output impedance is even larger (prove it)
4.3 for a specific input voltage, V_out is more stable (think about why )

Prob. 3.3, 3.4 persist

Transistor _mustknow

CMOS

un = 580 cm2/Vs
up = 0.4 un

pi - model
t - model

high input resistance of an amplifier to a signal is an advantage of MOSFET to BJT

07/14/2007

做梦

大雨
美国式平房
院子有很多树
树是绿色的
很瘦的猫
从QWQ那拿的VCR
要做什么也忘了
我从房子跑出来跑进去想要找到东西怎么都没找到
找什么
也想不起来了



这时候电话响了，是Liu胖子， ft

Newbie's speculations on Stock Market(1)-AMD

[AMD]

Fact1: [07/10/2007] former CEO of ATI and VP of AMD resigned.
Fact2: AMD chopped desktop CPU prices
Fact3:[07/10/2007] AMD to hold meeting with shareholders

my conclusion : sth is definitely wrong with AMD, stock price should go down (assuming more ppl would be less confident on AMD's future), which echoed from BBS, though contentions are always there.

Fact: from 07/11 to 07/12, stock of AMD increases from $14.44 to $15.36 instead.

Now, the question is: why?

Linux Command (1)

ps : check process status
kill : kill process
eg. kill 8505, 8505 being the process number checked by "ps"
jobs : check suspended work (suspended by "ctrl +z")
% : restart suspended job by "ctrl +z"
eg. %1 , "1" being the suspended job number
history : check command history
free /quota : check available space ? (not clear yet)
rm : remove file (delete)
eg. rm tr_test.sp
mkdir : make directory
cd .. : go to upper directory
kate : visual text editor under linux

vim (or vi) : text editor under linux
:w :save
:w + "file name" :save to a file name
:x :save and exit = :wq
:q : exit without save

记住今天

06/22/2007

记住今天

leanr to survive.

opne your mind

曾经有一份爱情摆在我面前我没有去珍惜，
等到失去了才知道后悔，
如果 上天再给我一次机会，
我会对这个女孩说：（我爱你）
如果一定要给这份爱情加上一个期限，
我希望是一百年。

高考

今天高考了， 想起01 自己高考， 那么久远， Fuck

时间一去不复返
过去的， 永远不会回来
珍惜今天
多做有意义的事
勇于迈出那一步步
让自己的生活更精彩
无悔一生
不留遗憾


------------------------------------------------------------------------------

--------

Gotta say, I didn't really like Cleverland Cavalier , not even now.

They have the ugliest ppl in the league, *** huges or sth like that, LeBron is amazing, especially considering his age. while enough for Cavalier.

---------------------------------------------------------------------------------------------------

GOSSIP

Paris Hilton's gonna serve 20 days in jail.

This add up my belief that the damn world is unfair, if it is to be measured in common sense.

Well, men are animals after all. most of the time, we tend to think by adrenalin, instead of so-called brain, so dont get too serious on it.

------------------------------------------------------------------------------------------------
Key word: Powre Amplifer, Luo Dayou, Endless Love, Go Home

----

work:
exhausted,
over-stressed,
sometimes content

mood:
suppressed,
restrained,
unbalanced,
confused,
open-minded - > complicated
overburdened,
regretful,
guilty,
satisfying
resentful
and a little nostagic

blah balh

Tired but Worthy

Tired like hell, but totally worthy.

couldn't remeber last time when i had such an interest on anything, 高考？ I dont know..

ok, move on

自尊心 在慢慢 被磨损,

deng等到磨的差不多的时候， 人也就废了

我苦， 因为还有自尊， 还很在乎很多东西，

总觉得力不从心，

总和理想的我有很大差距，

不知我的梦什么时候才能破，

也不知，， 什么时候我才认识自己－－－－>接受自己

看吧， 当下， 依旧接着这么矛盾的走吧

XY

I owe u

Yes, I-- O --U

WHen i look back,

I realize how much i owe u,

i realize how much u have doen for me and how much i did for u

Yes, I O U

I do remember your birthday 4ever, but I couldnt name your favourite color, your faviouarite food, your favorite movie...

I O U, I promise to give u a gift early this year, and still haven't done....

U smart, diligent, aspiring and most of all, warm girl , I can tell how much time you spent on learning me, what i like , what i feel, what i'm enduring,

At moments i thought of these, I felt how selfish, apathetic i had been.

I wont' end it with bunches of "I will..." coz that means nothing.

dont know if we had “缘”, hope so.

Come over, listen to me: I wish I could be with u and a good life together.

Best wishes to ur Dad and Mom, wish they get along well from now on, best wishes to your kid sister, wishes her recover and back on track quickly.

IOU -XY

要勤快

每天多做一点点，

要勤快。

拖了几周的事情该做了

迟到的开张宣言/愚人井

my 2nd blog, my own blog, is open now.

By any chance u read it, be informed it's totoally the same me, except here r somthign i'd prefere not to share

%%%%%%%%%%%%%%%%%%%%%

reason for this is simple: seomtimes it's diffuclut to hold sth inside me when i had a bursting desire to speak it out; and it's difficult to put it to my public blog because those who read my blog might actually part of the story, and therefore, it may not be a good idea to share it with them.

owe to the above two, i found a new blog a good-not perfect- solution to it.

so here it comes Idiot Jing's 2nd space, welcome!

May 26th/2007

选择自己的道路

林妈妈说的对： 最重要的是知道自己是什么样的人。

选择属于自己的道路

我就是要选择属于我自己的道路

BLEEDING HEART

BLEEDING HEART,

TONIGHT 05/26/2007,

TWICE THE SAME THING,

HAPPENED ON ME

B & G............... WHY COULDN' T I HAVE U TWO???

WHY? ?



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

ONCE,

U SHOW ME YOUR HEART,

I WAS BEING INDIFFERENT,

HAUGHTY,

SELF-ESTEEMED,

THOUGHT THERE FOR SURE IS A MUCH LARGER WORLD THAN WHAT U CAN GIVE ME.

TIME CHANGES,

U MIGHT NOT BE THERE ANYMORE,

LIKE BEFORE.

HAPPINESS BELONGS TO YOU,

AND REGRET BELONGS TO ME

无尽的爱/Endless Love

成龙 无尽的爱 LYRICS

成:解开我最神秘的等待
星星坠落风在吹动
终于再将你拥入怀中
两颗心颤抖
相信我不变的真心
千年等待有我承诺
无论经过多少的寒冬
我决不放手

(韩)金:现在紧抓住我的手闭上眼睛
请你回想起过去我们恋爱的日子
我们是因为太爱
所以更使得我们痛苦
我们连"爱你"这句话都无法讲
成:每一夜被心痛穿越
思念永没有终点
早习惯了孤独像随
我微笑面对
相信我我选择等待
再多苦痛也不闪躲
只有你的温柔能解救
无边的冷漠
(韩)金:现在紧抓住我的手闭上眼睛
请你回想起过去我们恋爱的日子
我们是因为太爱
所以更使得我们痛苦
我们连"爱你"这句话都无法讲
合:让爱成为你我心中
那永远盛开的花
穿越时空绝不低头永不放弃的梦
我们是因为太爱
所以更使得我们痛苦
我们连"爱你"这句话都无法讲
让爱成为你我心中
那永远盛开的花
我们千万不要忘记我们的约定
唯有真爱追随你我
穿越无尽时空
我们连"爱你"这句话都无法讲
成:爱是心中唯一不变美丽的神话