BSTJ 40: 1. January 1961: A Circular-Electric Hybrid Junction and Some Channel-Dropping Filters. (Marcatili, E.A.)

5.2 MB·English

A Cirenlar-Eleetrie Hybrid Junction and
Some Channel-Dropping Filters

By EA. MARGATILL

Tiig® hy jot int apart aan 60 the Rt area
ys deat, toma Hr mada invalid ave ier, the
Id ean be teecopionly mounted. allniug fxr adjustent t almost
‘any poe ison, The espera resus tow tas, conned ot
func, the fequoney range 8 tary dn 2 pe cnt. Adjuted fr equat
nner dition, 8 bance 8 eter tha 2 laud tt asad elec
lions iu the dion and balan Gltion) are ae af foet 23 db Below
to apns signa

Twp the hei lopter with hand esti, bantransnsain
iahspee fern 8 ie posae to Bald Townes channetaeopyion rs
Tre poles, te as af imple eof? weeds permite Ue eign of
flere et elma ectongver tronferchavaeeritic.

“The importomee of Iie jetions for many purposes — meaearing,
tikering, bling, sql, ele. uoodsardly be omplnsiaed. The
Teng, dotane wiesuide commusiation system? operating with the
lovrose rirelarelerbe ‘TRy” mode has only tno hylwis avaiable
he dvectionl coupe, nhish naa iso prev diisan, an ce ope

shri? whieh rites rated maces. Thi paper deseribs a
Uhind Haters, whieh epenates ike 1uble eaten which ad to
ue wll aoa advantages ofthat coupler Hh anigue peoperty af lk
inevahle poner cise.

"Anjasted for ‘hdb power division, the hyleid, together
couvetsion banrejoetion Hiatt band trsnamiion Alten
‘raveauiles? rm be used as loelose components of cunt -noieance
hocadldioppin iMere# The echenze thet es highspse fiers out
fff waveguide) deerves spasial attention boca he mpd tans
for elueaserstic nthe dtopped chasse! eam be matte I approach a

sme
eel
185 nus wena averaae EWEN, JOKHNL, HRCA 1GT

ee

seolacrie shape 0 eailrary Tote. "This peruite sab oy a
Taxing the demande ou the guaed nds between neighboring ehunsels
‘bat ab tle ltecing of us Ho Dead Genter slr pe)

22 be ban ay maletniverson Bers

‘The ord consists of to eoasial ecules mietale tabs of this
he ime? one has a gap J, as skown in Tg. 1. The ratio 0° diemeters
‘alectd equal to tho rato of the sero to the fet rots of the sol
Tunetion J

Db

a
U7 ER

1a. ay

‘rh oxen diaeer D is chosen oo that it cuts of the TR? wale at
ho highest regen of design the hy

Tho hybrid ie grace tive our nr ns Bk heen of Bi, 2
Tel Te shossn power entering any poet ie ale emualy i
vided eters the i forward randes, Cengecuently, going bw te

Soe om
camoeanerasoveie AHMED JUNEHION 1s

ig. 1, power entering in any port Ss alent oencly Seded beowaen
TTEat und TR in the gap region. Hach one of tase mudes repeat
power vision athe end of the yap, s0 The por colleted beach
ttn depen the rlative pests the ots a the end of es
tap. Since the slots of tse sundos are diferent se ealive ste,
find consequently the power divon, ray be sleet aphitranly’ by
‘San lenges a he ge.

“De et ever stteing matic fe he eval frp device
of ig. 2

Se . Py)
Sa Se Bu Sl

Si Su Sy Be

infering port ith ray LEA see the metalie inner tubo bas
faosuntaee where Hi snc del isn (fs sora of ts Jy Feneior,
the boundary ronltnn are astomatially olin, hn TE" rnd 3
Impertared. end svaneqaenty the bake tring,

Sa-Su 0 ee

Furtermon, Hie fervardeet ering eoeBiients at the pli whens

essing vague ae ace

ie acces o

[oe

se HS = 018 @
[store

Avsuning the jetion to be nonisptive, (2) rm ont, because
W eonasesation of energy, Hs flowing try reals

bear af men iw
Ese ia it man "

in plinth antes mene Meomples easing of
188. rm wns, mveIae roa AOMMNAt, AACAY TOG

Bram (8) ced i,

uw

fo

hore Bs the phase of ie
ino Sh mal Bu ace hewn Frnt (8) ae (By the five previows exe

evi become

Sy = 1078 Si oa
Be = TI Buy ay
Sin — 0.0801 ~ 4.08 84 6%, aay
By = 78301 — 4.08, Sf",

= 2.408 Syne aw

Th she experiential hybrid us be deveibol Tero, ee mods of
‘the rfltion selene

[se] < 0.05
und conmequenlly powers of sn higger than one can he dete. With
thie simplification, the forwed taster wletente of the seater mae
six a the hybrid Cig. 1 ere

an

as)

where
ag)
fs the beating wevsongt: bs

en TR wad THe in tho £5

Me See oy

vay

sad

aye on

vi-Car)

aro the TF? sd Tg? guido wareengti; and fe he Fre pace
vwarelenath

"Vor eve gnp te power division a ce bid A, and a pas
ft ovween he bu otc eva from 2, (6), 4, (18), 17)
‘nd (18)

ap _ taut n(an 422)
x [efter cay

LE harees cre!)
tented ters Vom.

For K — 0.0055, the power towing in the inner guide is @ snimem
fn spottcly 2 dh toe the ips. Par KE 2, tho poe Hsin
fn la sin pee is 200.

Since the beating soveleagt A, as wel ag the angument dy are ee
suenesgoiesivey te tier division Fe piven in (22) also vais will
Freeney We ave set elle bus itis Kowa hat the fre
thueney depenonce of Og asl of A dl to eaneel each other's effet
lllneig che power vider Ato be eonatane ever a rscivly bread
Than. Furthermore, if x wer easy’ to adjust expernwtlly Tv gap £
far ang allowable power division A bossuse the hybrid esa be Ball with
sliding then Tae medee involves get rile ected cexseuon ly
‘he ome a ater conti ere ines

An onder to sake avaible the jrver fom the hybrid a Jour-port
transihcer Tas bev leetroformed capable of trexsferring TT.” to
190 re neEa, sverRAe EERMICAL ANTRAL, TSTART IGT

by toe

ga TR tn TR (Fi 8). Test hg: of wash i ve
Ty munihiy detain yeaa ave ine eal ye
fuide. The wansducer generates small arsounse of unwanted higher
fender mpoes, which ean ersoaat and zai the Beavinec: the aylaid
‘Phe reeouscres ean be dampes by osig tor the eater (ube of te
bybrid losy-jucket helix waveguide,’ which substantially ettenusiee
‘ny mods with aca! conduction exrent,

Tig. shows tho electrics hokasion of the ord adjusted for eca
por division, Prost 30 19 61.2 kane the bulaneo is bot than 03 db
find the ioltion better than 8 db,

[AEBS hr the porn she Kyl aa nase is 6 bh
Iv ander to prove th st Uh Kw ete in the TRA to TF
Aranscaver, the gap mse argo until a 55 hay met of the prover
vad recovorc nthe ler wveguide i —set? = D900 ina. The
‘ncaa insertion los was chen reduced to 0d.

rouse: Fy
esse

eis aon

ig, — Peiosmaa feta eso hybi ee 18 to eaaen
nerioueHugeoate weep seNen wo

[No eurts hee en rue fo improve iter the hybrid othe tas
tuges The pmlc or Hae yl ae of spevimental nature
fd somes oueging le diner of the exp regi and incuding
“ular spnmetti Tanpet dissmitnsties sano the alae. ex
Genre the unanted nalestons. ‘The possible provement of The
{amecece ones nein Sum se relat ely plete
Tage ed in shew experiments lo nom sapbiseated sige’ that
rabies tne eonveri

es known ha comin mviniance channel-dropping Mee tine

pul mrt tonal eng oo Bid oat
Ti to flering paths, The yload deserted iy Betion ILL lend itll
Denar tit iter hot operate ath foes tela lectee mes, wt
ie nseznent'y etutetive for tae ne Hong Astaea aye Fe

he htsce ial ss natal el the hybrid re ss cas posses
Vive ymmetngs at example, liens de with Sinductive ies,
tneaecomeerion filer end eat? Glace. Uo PS, to such (lle
{ith entra ttauser seracensties ate Toate ayoabolely in ch
ita ord ster fsvepuidos nonnorting tw lzelar-slvtrie hybrids

ferent eaeys port nlf jest the fase, reeumbince
ae TP? in poet 2. The power trance! they the Bites ran be
hae to recerbine el i art ne ie rt 4 Che one hay a
liming the taps of bath hybrid to be etic, poser romney

Trot if tag inner a ower clr athe boesemn ples @ a
fev iti, a sso econ yor FE those pats ie fy
Frais On the lle: hand, eesing the to paths to be identi,

ig, $— Channon Hor ang svat yee
12 nou seria moountest soURWAb, anaes LBBL

ster reearbines in por 8 th yrds ieee ad remenines
in part 4 both gxpa difer by halla beating waveleagth between the
"TWy and TE? modes.
obably the es interesting of the channeldropping filters is ob
nine Ry using cule envi (higeps ars) ie cece ng
"a tre srs ror the fata she rameter eharasteritl
4 the dmpped chanel ean be sme to aoproximate a retangula shops
olor ctmsidering tho actin! geometry uf ties fers we sale
the behavior of « disin of const ceteave fers represented eye
Bolin Di, Ge) Te fist nk consist of two hybrigem eonzectod
zy bvo patina Menon! truafor al reetion wales, Ear path
icles high puss filer have of a Frege fs Me only die
soe Tetivaen the rasceaive constant nslstance tens ithe uot
‘eequeacy of the high-pass fiers, Dees of the pha abifte between
She datlevers armas o the hybrde, and che emituee af te corneetng
‘ple, power entering port O eam fe rocovened only sn pots 1,2, 3
‘on} 1). Tho power staneecs between put ane outps ports are
given in Fig (3); L ebainels ea be dropped ou of enatant
resins files
‘Tes actual geometry of one of tho unite of the ebain Ss very sesple

pores eed 1.2.4
camceasseauaerie sna roNertex a

wihes cioularclersie hybrid yl eu? wveguides are asa a6 eho

Vhs nv le 0, 1,1 cdg nnn to thaw te Hest unis
in fe fe, Te two hiybide in Pi. 7 ae cifezent, in one bo enn
‘he postr team theo the uta ee

fa the inner

gue

‘Withont cavities we Ive sehieved a sles rovtangtlar sansfor
anustristo of exbieary wide The guard bund betsren storssive
Ucn cen He mae, lw in prnepl, arbiter eal, A woeking
fade! of eu fens bas been demonetaved i Ket. 2.

"Thetis another ebanealropping titer wort considering Iams of
ite snc ad eee i user The steuere shown in Tg. 2 ns hy
IW ne wade ean tec tes te eessoring eet f Ua Jone
tow given i {U2 (12) (03), fy IS) aed OG) ae very ose tn
hove of wird shee. Sin i eis ena]

‘Brows conekering ile aetne shasnelscupping ier we shall do
rile a miernne equivalent ety Aig SLs eon of eo hybrid,
talental ne Ribet soplers, which ar conaceed by to wnveguides
it equal een2el leat Tvs seasrgides are aba coupled og
‘hor ilenent someting cavities. Te eeetial distance ett on
fing den in the appr savesuide eam ed mip and in the
Two weep ile un en gate of

‘Gut of sonal Freney ofthe exes pwns enteing port 1 split
in eal parks in he Get bid and recomines in port 6 0 che senna
Istwid. At wsonance, power entering post split in eeual posts and
esl usenet the ravi in dient mays. Let o feller the power
fa the upper pats, Mersune othe detante betes coming hole, te
cavities ars exeted jn opposite se cn the serait om the eave
tice is auch shat all The power flows le toward port 2 ws refloted
ror texan wor einen ected sm plane ef seemelny &, Mea
‘while, the power dovsicy in th lawee path from gor 3 excite the eexi-
‘ies i phase ad ann, beeaae ofthe rdequateditsnos hetmecn hoes,
all the power goes hack toward ger 3 as rflorled by a short eieuit
fn plane 0, Reeorainctiom of the eo wer lr pane tess
ple prt 4 of the ft yd

‘The arial micromay ett for citewlarelgetaie waves ssn
Vig "The bn abd ae ke thse of Fig 2, Waves sig in pte
2ard of Fig 8 are equivalent tothe TH,” and TH wes in the gap
ff Fig. The bgt othe gap eon sone beacng wavelength betwee
The Ty? wad he TH md the dele i eri i sch 8 wy
hae eT i off op foe ro e.anged gions whens resonates
of thie mode cakes pla" These mode-conversian resonant eave”
auple tn both TR and TIE, weds and ace separated by alfa guided
Srevelangth mse in Ty rm al ose gel woven
red in TE," mode, The mle cuenta wiles” one Those
tstvalent to she resonant eavitis of Tg

We api tgs TR) TF ina Fe ag
Tete TR ard TFs, te eae! oping ler Toes Bae
constant tesistance, This an be dered om Fig. by nang the
‘epg les he ange nase ie Fa tea Tae

a Bah ene ssn a woes

ig. ¥— Cnc droping lor wll- TE” ninde-conersio er