BSTJ 50: 7. September 1971: TH-3 Microwave Radio System: Microwave Integrated Circuits. (Dietrich, N.R.)

10.6 MB·English

“OAS Ee oe

TH-3 Microwave Radio System:

Microwave Integrated Cireuits

Dy N.R. DIETRICH
(Ofacexsipt reived Deemer 8 6)

emwase Sutaratod citys ve boce employed nthe dtlt Sytem
Jo the fr tng 3 tne THS one ayaa, Uae sivas, ning rp
arse nenerou functions previously ached with
asses of invita waseguide componsnt, By wilsing the made
teeknobioe nf platbitharany, pronsion die outing, rem protec.
fal taalaespbt thin fea, tone eirute provide adoaiages on ce
fabrication, bay "tayo perlermance, aes

Iranention Ko

A series of four high-performance, Funelionaly integra, wore:
svave cireite fas been developed for use in the 6-lle TI redie
sslem, Tho cite designs inlyraie romans tiowave fnetion,
tpersting tly vession Ene medi, into single
Packages. Thy teslace assemblice of acrove warezuice ecmpenanes
tse in The design of earlier rao clay ayeten "Th nbty 2 desig
ach finetan Tore ssle application so rth i to Sa nelghbor
‘lows high performance sandérds, The zesuking redustion im inter-
consi tnproves he eli bility. Considersble apes and est anving
fs rtlaed since mony comnoa roecheaieel requiem ate satis]
dy the seme housing. The housings, male of sluninimy, are die east
‘whieh accounts for a consdeenble portion of the eos axving. ‘The
vipline eenuer calor ail Thin fin rsetore ane eneuted by hot
lhemieal tence For lanl wd old Bla. The se of enaric
fubsteavn and thin fila teehnology ie smportent to the achiereiient
ft longsterm reliability: "The sheren: provision amd low cost af these
lesiiquce provce dmmesions] eos) aad aeproduelbiiy and come
tribute tothe overall cost stein

“Tae cious, threw of whieh ze ase in exch THEA radin bay
2070 map aria, evareW mpemTsToAL JeUENAL, SPE

intsoduood in a preceding papert by A, Hamar) nd BR. M. Jensen
There are two versions of the arriee distribution ciruil, One is for
vie in a opeater station buy, ue acer for usp in e muin station bay.
Generally, they penforra im the sme Ney a that they dictate
‘microwave carier power, said provide input and output avozes to the
thodulniors. Monitoring, tertine, und iolnon featnnes are fneluded
fe soveni poinls Unoughnul the eects. The taveling-ave tube
Input and ontpuh citrus operate im tho modulo signal path. They
provide low transsion Tose with nplib slope, high isolation,
Inuniloving, esting, attenuating, Glering, and homing fectures within
thelr teepective phekngrs, higiser I and 2 ane polograph of the
‘pater ation earrier disebation ebouls and the traveling-wave
fale input civait achematie dewnioae wre given in Section 1V

‘Many of the Iuaetiona inogonted into tho Tone craita sre eeatad
snvinl ere ot nave einiazors ws the basi werent. A total of seven
CSreulavore i ince in the epenter eiaon version of the carrer
Sescbution vou, while the mein meation version includes sie ci
Guletom, ‘hes invaling wave tube faput sve ipa eee have two
Girculavre each, ATL eivuils inooeporete che asoowary tenortione
Tenven striplie and the ccwneinsiow azedee of tbe serious connest-
ing components, ‘Thee involve somal, wavemuide, recuoed-beight
‘vogue, and ¢e eennzetons.

‘The notra’ aribien: cempenoture range over whieh the etoile
Ste: 90 = 20°F Zor the carla id ibtion eins, 90 2

ring-wave tbe input ele, snd 5 AVF or she

feevelng-wasr lie oatgne eeu, The clavate! ambiesh around che
‘TW eneuits {8 duo to the cower depusion of the THT poser
empl

2 Cireator ed Siripline

Figures fa ane 5 shew « exoee-ecetion view and a top view of the
ciresacae and siping, ‘The types) eirtator admit-ance se a Sune-
tion uf fegueney de shown ia Tig. do, The ground plane epacing is
0125 iach A $8.-yereent-rure skeina substrate, OOF Inch thick,
is eveponded ooniruly between the ground plance, Tho center cox
fiuctor patter oontnl on une surtece of the substrate is nominally
hoon inch thick, wast 10 skin rll at 6000 MH. Since tho
tmoliun ie not homogenous the energy? dost not propagate purely
laa TRM mae. ‘There ue Geld euuponents in the ditection of
aur

“yar venga seme sone mrad 270 aia POS PED THEO]
2178

gy ua yu) aun Pupsun 24 0 54K ps pw Wz 2
ryminaran coment a7

ws

Bis Se ay a, Gcrsau ey) Top pero

propoxation, Tense, the medium ip dispersive and tee sopagation
urea is canolion 0: frgucey acl mensions, his eer, hear
seer i cxteozely esl und sey be dgzoced for pretion purenes,
Swi a"TROC eae ie assured, Tho enter enacuerar wide. requzed
for a oberactaristis inspecaaee of 80 cunts ut 0X00 Mls ie 0.114 inch,
‘hie eflecrive dieleetie constont seeuing from the prescrse of tho
ligheauia sling ep = 951 In aaa. pention 0: toe fre rion
‘wappnetnae’y 1.7 Fora 50-010 Tine

Tevesiaivale arynvted wibsey Wsneen che geome wane Be
ise of aloes eubstee yin ivr varuel OM6O incl hick
Tendo 7c bor evfow of esas lye Fe OMI Mises,
lve the O02Kaei-taile eabesru, 20love comdeetar, ae
ren hoses of HOOD! inch etch, sul ep ve aexcle the srosnd plene
acing. The ama. difezcres ane, the varntione us to mechasieal
Colerenees are taken xp by tightening a tzeaced plug loectes‘n one
rdurd plate at cack eieeleto: metes. Kach plug ie achsated ine
idly so none abe sreualar vies, Lue aeuring Ua wr ui ap
eile An ni rap 6 stall as one hoax ain ws hem
2180 rom maa syerun munueN, SoCmAL, SEER aL

he imsalance of Phe sienlatar junction uae svioualy eee: che per
facvange, Tha dimensions of ie dae ae djs i acta Tee
junction) she ffopiney bard of insert, Tis wnier eumdusiar
Dettesn ex the subs-sse ine les priest canefortcrs to provige
stable txpedeer ratehos ino rezonantjune!oa,

“The jerien impedance is uppruvivtely 15 chins, A quertes-mave
impedicer ranalrmer of 2 obimetransZnis Une unde ipaianen
40 80 cba, Bish of he foneens ielaced ia fee Tntgrated sieete
‘woe cevelypel indieiincly “Fa oma etravmece and alah: vo 50
Ghme, Aer intowatioy Cho periisanee i eptimiace by aumbor
feilorice the desig lv iproveioserteoe tentoos Bemreen neighbor.
‘Tus transfor ingariw mpd lesa sre inentionally chess to
be inoormeet for a opcuaant iiachoner nach. Ts allows for the
iornmration of taming sorewe Zuto Cie naebing soheae wate per-
formance demarde sae high. Sirey wlianieal Uolenars and feri=
fnopneie nateralonoperee ae dieu: sal experi Uy otro! lo
Ue degre ett fo enaictrnie beh visatator perormance, lo
trina etess mey Teeride orhogural Bee basing wf Khe ekealae
silane age se Wha i may e tured co she conver of thy tilt
hace One sore. Ui sie, effectively eanzos the trmformor
fulttazen eng srovides fine luring along the eonauctanoe aes. "The
ther sore, the esa senon, nde he Resto length af ane
former ane proses wning alone Uap siev-daure eonivae When
sich re turing it nat aoquited, the serewe ate no: inclyled az 3
fonrenron ie trade inthe cuter woilve te geemeley

"The VATG rantesal upoa wie the error Hsp fea han
sales‘ magnetization T4rsH,1 of 16D gous, Thie metre,
‘whieh is used sther system comorents, sete Ue eriorin Jn
voicing Jow [uli loses. The 48M-oested reagnetic bing eld ia
Tromided tyra poir of Lacan Govle mane magnela at ra0k
Troll juacies, A theended arnew moves ont of ie magears 1
byw a 10g fh it gap iz the mugaatie ervsih val gracile bane
Ut for the ragnetio fhix cent ot ee ezelwiorjare.ua, Tombil-
ity is maid eines tho permanent migret neririnmity an he 10
pcrent. Theve oe also Yacitione due ty zueiaieal ‘o'erans ral
Tevsimognetie spcteriale tacpeties. Mach civulator is Couotinally
tne for Tee, mperaloa fy edjuting the ngaetio fil! tuning sere

“A aes srs mae of the lomporstne denentienns of 2 eiecIatar
esformance. Censcilly, ie eruulator yerormarer dscades ab the
rtm ode 21°F npesating vempersture minge. The degradation
fa priate to ohonger th biden Gd produced Uy Ue paras
becaeeame cre? as

nent rangncte Rater an ceuapenaste the mangneie einai r0 elimi-
ante the degrcition, « nen af pee‘ermanee was ade. u fe room
emperatare peviernance ohjestives. When aplatore and izapedance
rrataies atv involved, the performance obiqeive was 30 dB) rorerse
Tose, of 30 aB return loss per eireshtor Tonle to previde some
svitioual arg tallow for degraded yerorinaree aver the vange
Gf operating temperntures ial wannfaesing tolerance, the desi
fhjestive was aet_et 38-10 AB per cireoter. Forward travemission
Tose i appevionely 01 IB pe pass

sp Telator

"The isolation funtion inchs all foe svete is obtained by
lerminatigg one sim of « citewatne with a Thin Bim zeitar in the
tier shown i Fig. a, ‘The torino sao ie fabriaced yy

phowebemieal teeuques from a fly ef tuntaloz nitride. The
itive ln is oneetilly a abort casion of higi-loee‘renemission

Oxy sate

(o) stan

Fig, (0-07 gor ore. (
ern or Soe t
Fee ye ely of bebe seca oes RAE fspmter Ute
"Sea ct esta de feet one tat
2182 ea ana evourW meres souRRAL, SPAIN 1

line, Tes commer to #9 masng through rota spring iy whisk
rer the edgy of the suielvete end concrete w eondolor ‘sani
‘grand places sizultineworly, nerhowe in 1g ab, Thus, otek
teruizaling reer i located ele to ane of the aubetrate. Vai-
thie lays and se resimeanees of the reitor ere sted. A vesstar
having lng 0° ORE inch ad ce reistanoe of 82 ola ws ehnaen
tr the beet teruination, Thie seule was based ypon the potion of
the semitine seare wn the 1/80 mo admitance char as shown in
Fig. de The epot soe sopresn(s the range of admittance variation
ver the 6925-T4QR-MULe frequcney bn for the indiceted lengths
tid reeetanee, Also ahorm ithe typo clzwlator edmitence, eis
tlie thet these fen admittazces te complex conjugates. ‘The
trestet devinlion Town This relationchip i equel fo 0002 diference
in VSWL ‘This predicts a zetur Jos, and 4 eomepomling "vere
lees or thy isolate of 40<4R. Tha zevere loss own ioltor is @eler=
rine’ by the wlan wateh at th oirealatortermination iter
face. Actual perforiinee of singlestage selators of this (ype i
revere lost cansiaony in oxcoee of 8 cB ara forwacd Jose approx
ately 0.1 AB

"The poner diesnation in tke nuiser should be lived to 05 wee
for short vise pris aad D1 watt fr exten oF continuo. pevods
“Theos limiaciooe arc tased on the pertanent chenge ip resiktanee
due to serused lemperstines. Tea? cm resets show ‘hab jar 01-
‘yall eostinaous pewre=isisaion, oF 10 mets par equate ine of hm,
‘the ehange in zeit shuld be lens shan LO parent after 20 yonze.
Generally, the imitsion on power ispalion ie af conor 085 in
Ue TWP ouyat eset, Hore the synal hae boon smplitied to a poner
of 10 waste gna, shaule the outout oF thy ei, be severely mise
rnatehed, excessive poser onl be dissipates in the termination of
‘he tpt isoletr.

8 Poser Spliter

"The power slitting function’ used im the repeater station earvior
istittion vient tov the transmitter microwave carrie (TMO)
between the shih wullator and transmitter modolator is shown
schemetiealiy iu Tie $4, A luring sete is loetced at the common
frm junttion bucwun (vy ireualom Vasiost amounts of shunt
fapacitares ney be added ta the oltre caniehod [ansmnision Tine
by ndjting tie cers. Mieratshes epproacbing a short vireuit (1-2
AL retur Toes) can be adhieved: causing signiieact postions of the
Savident power to be evlstad. The refcted pore is crculatod to
sermmnvten cunceits as

vee
a a (POWER SPLIT RaTIO, 2=

CN Fein at Sui ity [item Go Tramiel

post 4 an the pee” [sie sas te aniancek goss to port 2
iene, £3¢ iaput power ivideal ele ths! hie ispat az output
Iinjedesee watebee r1e net epement spon sho oer dieing is
tare, Figane Sb shen the vara a of the pala of Pa divide powers
( foretion of the ante poatiun fue a frecuerer i Ube veer oF
She bad

1a eng snr sreoeanee Fe sas v be uvuly npc an
fs local att clot he someon aot Jenoton, feat elear hat tbe
riaacth will be s fowe-ua of Exqueney. ‘he onparitve source
uses nivure'y ai “oecay; Renae, the power Avision rato will

fF ae fiction uf “nsqwency nes he ®C3lLx al ‘he 2a
2 by 1 dM ora

A

Variable exeoutnien fnew wre inelolad in the eeu nt three
peo, Rach i of aight lens ronstmitian in ade te sat
Hy aptinonenes ef tae pare wopeation, Howser, hey are
imi in ymratin, ‘Phe atterntas ie cesta by eorcbini » power
2184 em sere evarewr manna ona, EMU LANL

splice end a sermiecing resiter-ue shows in Tx be A viteulalor-
lemates sombinivien aivides the dreideat puveir ny powcinsly he
forted and a temincriog rsiner i added to <inipate ether “he
fava or tllesed pertinn ee the meer, The tuxamisien type
{ort 2 terminated shown in ¥ig. Je is ance saltable where high
ring 6°altonvation avs west re 8 30 AB, The refleeion type
{pote J Leute) Se mare wile fue “ve rege alienation,
sg. 65 Al, The astesuanor ancluded ia the wraveligowave tube inoue
fdresit eee Sertion LV ia ramgsia diluent dom shove ovo. [33
Das‘ally a tansnission type. Liencver, is iz spec coxstrairé t0
sue 4 a “uw altssuation range, Sizee the eu opseeing in tbe
Imocnlstc signi pth, “a9 wetrattor hse taal be sewer acne
tine to stequeney and ie laa saad exouble of 9 very lee einai
stlen.ecion, 0.1 a ov cee. Pember slower in the system melee
ite desrabie pint <# whieh fo inete or de-zot tox sigue daring bay
lessings Tetons, the termination ian exteroal, removable, avr
fide teculstiy slur Mon ot In fhe termatinn, Reworal of
the waveguide serminan revlon he pat avasehis fe esting, a=
ied she miesctebig eet of se alvecastur ena be samovel
tnininises A coaxial ming sree woe ascd, Te eonsets of a meted
fyiinde siding iene ean) ele in «moet eer body. Tho tro
Sus osparuted by divestrie cove severed thovewethe of sa ize
ting The evlicder ceonets te cuoteseoacuctr und i speng-lonced
lo couloir the eeow Lody. asthe eorom hed ia tamnce, che
riverla of che na elton varies te abuage the tes of the coupling,
topueitanre, The cher sj, ene lege ateas poble wil [ie
crvig alley a wrealr jucue of eapesauee vericliva soe Cat eval
able sora she ccd acca aud bege =pkeing uf © pine wise Eee
fe toad in the poner epiter Te miselanieal stuns ace ‘aoinded i
the constuction of the aerer, When the serear 28 eet Sully elekine
he eupain high = 0 pV al Te elie aes pnt
0.1 a. When the vive ie aut Lally cunlurelroweiee the exoneiaee
ta weenced to the velue areosu to exer: pxeater than 20 dl zum
fons. Hence, ti attoazater lb 4 cepsipuous ecljuament riage fom
UD AR te 0A, Ths nes slane sf Ea A AT ass te
G1EATIe frrwwruy uel The oma eng The sere
Rone! in x ell éxpe lacking cece so “hut it mary 30 locked ir
Psion, er adjased agrinslauceva ra drag,

ss Payer Sentry
Viger ineniaring alates ane fT ak ov points nuk
ces she ceeate. "The power on “ao main signe peth 's sorapial and