(3)
z-hp
z~ t6ng ira phuc ciia M2C,
p - trd khang sdng ciia doan day nd'i icri M2C [2].
Ne'u ta goi khdng gian nang luong sdng trang thai tin hieu ciia mang 4 cue tuye'n linh bao gom cac vec to:
Hinhl
^b =ae+be, (4)
trong do e^ , e^ ia cac \€c to co sd trong khdiig gian sdng trang thai tin hieu, thi dl dang tha:y
rang, khCng gian sdng trang thdi tin hieu va khdng giari kinh diln ciia mach dien tuye'n linh la ddng C5LU [4] va ma trdn chuyin x tu ca sd (e, , e^) cua khdng gian kinh diln sang co sc
(e , ^ft ) cua khCng gian sdng cd ke't cdu:
T =
^ 1 (5)
2. Cong suat tac dung cua mang 2 cue hay Metric eua khdng gian nang luong song trang thai tin hieu thai tin hieu
Trong khdng gian nang lucmg sdng trang thdi tin hieu, cdng sudt tdc dung cua mang 2 cue, hay binh phucfng dd dai cua vec to trang thdi tin hieu duoc xac dinh boi bilu thiic:
V hay hay = p = a'-b' /? = Q + JQ (6) (7) lrong dd / - ma irdn gramma cua cac vec to ca sd true giao chuin hda trong khdng gian nang lugng sdng trang thai lin hieu [4]. Ma U-dn J cd k^t cdu:
J =
Trong tnrdng hap xet ta cd:
d&t ve.
Do dd, khi ndy ma irdn J c6 ke't edu:
y = 1 0
0 - 1 (S)
Trong mat phdng 0-ca-lit, phuang trinh (6) la phuang trinh ciia dudng h\T>ecbol \'ai cdc dudng tiem cdn ia cac phdn gidc eua cdc gdc loa dd (xem hinh 2).
Tir hinh ve thdy rang, gia tri khdng ddi cua cdng sudt tac dung eua M2C ed ihl nhdn duofc vdi cac gia tri khde nhau ciia cac loa dd a, b. Hon the' nua, cac toa dd a, b lidn he vdi nhau bdi bilu thuc (6). Tir su phu thudc giua cae loa dd a, b, ed the ihdy r ^ g viec chuyin tir toa dd nay
sang loa dd khac cd thi ihuc hien bdng \itc
quay dudng hypecbol mdt gdc 9 nao dd, ma su quay dd hoan loan khdng lam thay d6i dp dai \'ec ta.
HJ!2J]2
3. He so' truyen cdng suat eua mang 4 cue
Ne'u mang 2 cue da cho, dugc nd'i vdi M4C tuye'n linh vdi ma trdn truyin sdng T thiet ldp md'i lien he giira sdng ldi va sdng phan xa tren ddu vao va diu ra cua M4C (xem hinh 3)
- T T
T T
'b.~ (adsbygoogle = window.adsbygoogle || []).push({});
a-
hay C, = T C (9)
lrong dd Cj = [aj bjf , C2 = [bja^f la cdc vec la ma Xi^ edl ciia sdng ldi va sdng phan xa iren
ddu \'ao va ddu ra cua M4C
T = -'n ^\2 T T
la ma t 4 n truyin sdng eua M4C. Thi ta se nhdn dugc M2C mdi \'di he sd' phan xa P,.
Dac linh cua M2C mdi dugc dac
trung bdi cac bie'n mdi a^, b^. Cdc bien aj,
ftj lai dugc xem nhu toa dp ciia \'ec ta C, cung trong khdng gian nang lugng sdng irang thai lin hieu.
ai ^ ^ b, T a-, •^ p Pl
Con ma trdn truyin song
Hinb3
r c u a M4C dugc xem nhu loan tu tuyen linli trong khdng gian 2 chieu
bifih ddi vdc ta trang thai tin hieu tren ddu vao C, thanh vec ta trang thdi tin hieu tren ddu ra
Cdng suflfl tac dting tren ddu vdo va ddu ra cua M4C dugc xac dinh bdng hieu ciia cdng sudt sdng tdi va sdng phan xa
P,=a^-b;- P^=a:-bl (10)
hay P, = C:JC. = QiTjry'Q (12)
d day, ddu + bilu ihi md'i lien he Hec mit.
Dd'i vdi cae M4C lich cue, cd ion hao. khdng ion hao. cdng suat lac dung tren dau \*ao Pj cd
Ihl be han, Idn han, bdng cdng suat tac dung tren ddu ra P^ cua nd. Nghia la loan lu Tc6 the la
loan tu dan, co, u-nhi-iar. Tren quan diem loan hpc. ma Iran truyen dai 7"cua M4C khdng l6n hao thuc hien phep bien doi loa dd ciia vec ta lrong khong gian trang thai tin hieu, nhung khdng lam thay doi do dai cua vee ta. Cdn trong ky ihuSt thu va xir ly tin hieu, cac M4C khdng idn hao dugc diing de phdi hgp giiJa cac phan tir cua he, dam bao he sd truyen tai cdng suat tac dung tu nguon tdi phu lai dai gia iri Idn nhat va chpn loc tin h g u .
He so' iruyen dat ciia cdng suat cua M4C lrong khdng gian nang lugng sdng dugc xac dinh bdi bilu thiic:
^ ^R^ C:JC, ^crjTjrrc, ^^^^
p
p, arjTC. c;jc,
Bieu ihiie (13) cho phep dua bai loan xac dinh dieu kien phdi hgp M4C ve bai loan gia iri rieng CLia cac dang loan phuang lrong khdng gian luyen ii'nh - khdng gian nang lugng sdng irang thai lin hieu [1].
II. KET LUAN
1. Khdng gian nang luang sdng trang thai tin hieu \ a khdng gian kinh diln ciia mach dien luven tinh la ding cau, do dd phan tich mach dien luyen u'nh cd ihl xet lrong khdng gian sdng luven tinh la ding cau, do dd phan tich mach dien luyen u'nh cd ihl xet lrong khdng gian sdng ho'ac khdng gian kinh dien. CJ giai tdn sd thap thudng xci lrong khdng gian kinh diln, cdn d giai tdn sd' cao thuan Igi han la xel U-ong khdng gian sdng.
2. Viec su dung cac M4C khdng ion hao m k tren ddu vao va dau ra cua M4C da cho khdng lam thay doi dac linh nang lugng ciia nd, ngugc lai nd cho phep phoi hgp M4C vdi dudng lam thay doi dac linh nang lugng ciia nd, ngugc lai nd cho phep phoi hgp M4C vdi dudng iruyen.
TAI LIEU THAM KHAO (adsbygoogle = window.adsbygoogle || []).push({});
1 Dd Huy Giac, VQ Thanh Thai - Khdng gian nang lugng trang thai tin hieu ciia mach dien
luven linh va cac dac tinh co ban ciia nd. Tap chi Khoa hpc va Cdng nghe lap XXXVl (1)
1998.
'7 Dd Huy Giac - Ly ihuyel mach vd luyen dicn. Tap I. Hpc vien Ky ihudl quan su , 1990. •^ Feldstein A.L., Javich L.R. - Smiez cheiuekhpolnosikov i vosmipoliuxnikov na SVCH Sviaz,
1971.
SUMMARY
THE WAVE ENERGY SPACE OF SIGNAL STATE IN LINEAR CIRCUIT AND TTS BASIC CHARACTERISTICS BASIC CHARACTERISTICS
In [1] we examined the energy space of signal stale in the linear circuit. The co- ordinates of vectors in space are the values of voltage and current on poles of a mulli - pole network. However, in the band-width of super high frequency, test objects in the wave space are the values of incident and reflected waves.
Similarly as in ihe classical space [1], in the wave space, we shall examine concretely ils basic characteristics in this article.
Based on the results of solulion the combined problem for signal transfermation will become the solution of the problem onsipesific in linear space - energy space of signal stale.
Dja chi:
Dd Huy Giac
Hpc \idn Ky thu$t quin sir
Vu Thanh Thai
Truang Dai hoc Khoa hgc tirnbi^n
NhStn bai ngay 12 thang 6 nam 1999
Tap chi
«- KHOA HOC VA CONG NGHE
*""" Vietnamese Journal of Science and Technology
Tap XXXVIL so 6, nam 1999
MUC LUC
CONTENTS
I ran a
60 nam nuay sinh PGS TS Nmiven Thanh Son
Dang Van Due, Le Qudc Himg, N^iiyen^.San Hai. Nguyen Tien Phir(m<j - Thici i
ke'va cai dai he thdng ihong lin dia ly phan'ian.
Design and implcmeniation ol'ihe dislributed ccorgaphicai inloimaiion sysicm.
Tran Xuan Hoai, Phan Xuan Quy, Ntiuycn Hirii Khanh - Trao ttdi phirtrni: phap i ]
I'mg dung cong nghe cao trong giao due - clao lao.
A proposal for the technology enhanced learning in \'ieinam. (adsbygoogle = window.adsbygoogle || []).push({});
Trdn Him Dp, Pham Huy Qudc, Nguyen Duy Hang, Le Xuan Tham - Nghien i6
ciru nam Bao r\^\i Pleurotus spp. ircn co chai chua nude thai cdng nghiep ehe hien
cao su.
Investigations of abalone mushrooms {Flciiroms spr.) on subsiraie.s with wastes ol'
industrial latex processing.
Hd Phii Ha- Hoang Dinh Hda - Anh hudng cua ndng do dich duttng den he so sinh 22
san rieng cua nam men bia.
Inllucnce of worth concenlralion on specific <:rouih rale of brcwer\' yeasls.
Tran Van Minh, Nguyen Van Uyen - Trong chuO'i cay nio iren quy mo cong 2S
nghiep.
Growing banana planilcis industrial scale.
Tran Cdng Khanh. Do Huy Thanh, .Nguyen Ngne (Jiang - Xi\c dinh do ben oxi 35
hoa cua dau boi ircm bang phucmg phap 60 do dJm.
Conductomctric applying on lesimg the oxidaiion siahiiiiy of lubricants.
Dinh Gia Thanh. Nguyen Van Khoi - Phan huy quan A o a cao su iaiex. 39
^ Ngiivcn Ngoc Khang - Nghit^n ciru ung dung kha nOng hap phu cua mot so khoang 44
tu nhien vao viec xir If ddu tran.
Application research ihc adsorbabiliiy of natural materials for treating spill oil.
10 Do Tran Cat - Vai trd ciia pha trong chuydn pha vai nhidu ihong so irdi or. 49
Role of phase in mulli-order-parameter phase transitions.
11 Ngiivcn Diing Citimz - He sd tmydn nang luong cua bila vao coc, chon dau bua \a S5
chon dem.
The coeficient of the energy transfer of hammer into the pile, choisc of ihc ram and the matress.
12 Dd Huy Giac, Vfi Thanh Thai - Khong gian nang lirong song trang thai lin hieu (S2
cua mach dien luyen tfnh va cae dac linh co ban cua no.
The wave energy space of signal state in linear circuit and its basic characteristics.
In tai Xuong IK Nha in KJioa hoc va Cong nghe - Nghia DO, Cau Giay, Ha Ndi.
Chi u'r / ''S74 Iri xong va nop luu chie'u thang 1 nam 2000.