super sma connectors end launch connectors · southwest microwave, inc. • tempe, arizona 85284...

Southwest Microwave, Inc. • Tempe, Arizona 85284 USA • 480-783-0201 • www.southwestmicrowave.com

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Connectors

Cable

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Installationand Tools

Super S

MA

Connectors

LaunchA

ccessories

outhwest Microwave’sEnd Launch connectors

allowalowVSWR,lowreturnloss,launchto50GHz

toaboardwithonly2throughholesaddedtotheboard.

Theyarerecommendedformulti-layerboardswithcoplanarwaveguide

orsinglelayermicrostripcircuitboards.Availablefullyassembled

withSMA,2.92mm,or2.40mmconnectors.

Features:

WorksonMulti-layerboards withcoplanarwaveguide.

Worksonsinglelayerboards withmicrostrip.

Shippedfullyassembled.

Theinternaltransitionis designedto>50GHz.

Connectortypesavailable areSMA,2.92mm,or2.40mm (frequencywillbelimitedby connectortype).

Only2holesneededonthe circuitboardformounting.

Newbottomclampdesign improvesgrounding.

End Launch ConnectorsSuper SMA (27 GHz), 2.92mm (40 GHz), or 2.40mm (50 GHz)

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59


END LAUNCH CONNECTOR MODEL NUMBERS REFERENCE

LAUNCHGEOMETRY

PINDIAMETER

DIELECTRICDIAMETER

SMA CONNECTOR(27 GHz)

2.92mm CONNECTOR(40 GHz)

2.40mm CONNECTOR(50 GHz)

COPLANAR

PLUG(MALE)

PLUG(MALE)

PLUG(MALE)

JACK(FEMALE)

JACK(FEMALE)

JACK(FEMALE)

A B C

MICROSTRIPCIRCUIT GEOMETRYTRANSITION

DIAMETERS

RECOMMENDEDGROUND

TOGROUNDSPACING

OPTIMALSUBSTRATETHICKNESS

OPTIMALTRACEWIDTH

.010

.007

.007

.005

.0635 292-04A-5 293-01A-5 1092-03A-5 1093-01A-5 1492-02A-5 1493-01A-5

292-05A-5 293-02A-5 1092-02A-5 1093-02A-5 1492-01A-5 1493-02A-5

292-06A-5 293-03A-5 1092-04A-5 1093-03A-5 1492-03A-5 1493-03A-5

292-07A-5 293-04A-5 1092-01A-5 1093-04A-5 1492-04A-5 1493-04A-5

.0480

.0390

.0290

.0635

.0480

.0390

.0290

.010

.007

.007

.005

.045" TO .062"

.037" TO .046"

.026" TO .037"

.020" TO .027"

.010"-.063"

.007"-.048"

.007"-.039"

.007"-.029"

.020

.015

.012

.009

.027"

.020"

.016"

.012"


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60

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dapters1

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2.4

0 m

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onnectorsEnd Launch

Connectors

Cable

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Super S

MA

Connectors

LaunchA

ccessories

Microstrip Data

Belowaretestresultsto50GHzfortwo1492-04A-5end

launchconnectorsona.008"Rogers4003microstrip

boardwithtopgroundlaunch.TheplotshowsbothVSWR

andinsertionlossforthetestboardandthe2connec-

tors.Thisisnotastandardtestboard.

Definitions:

Coplanargroundplanespacing=tracewidth+gap+gap.

Thisisthedistancefromtheinsideedgeofonetopground

planetotheinsideedgeoftheothertopgroundplane.

Optimal substrate thickness (see below for detail):

Formicrostripthisisthesubstratethicknessthatwillbest

matchtheendlaunchconnector.Forcoplanarthisisnot

asimportantanissueasthegroundplanespacing.

Optimal trace width (see below for detail):

Thisisthetracewidththatwillbestmatchtheendlaunch

pin.Fortracesmuchlargerthanthepintheycanbe

tapereddownforabettermatch.

Ground stitching:Theseareviasconnectingthetopground

planeswiththesubstrateground.Thepurposeofthevias

istoensurebothcoplanargroundplanesstayatthesame

potential.Thebestplacementoftheseisnearthetraceat

adistanceof1/4wavelengthofthehighestfrequency.

Maximum board thickness: Themaximumboardthicknessis.110inches.

Microstrip to coplanar transition:Whenusingmicrostrip

onamulti-layerboardoronaboardwherethemicrowave

groundisnotaccessiblethenamicrostriptocoplanar

transitionshouldbeused.

Choosing the correct launch transition:(refer to drawings on opposite page)

For Coplanar:ChoosethelaunchtransitionwheredimensionC,theouterconductorofthelaunch(coaxground),ismatchedtothe

groundplanespacing.

Theground plane spacing=tracewidth+gap+gap.

Thisisthedistancefromtheinsideedgeofonetopground

planetotheinsideedgeoftheothertopgroundplane.

For microstrip:

Choosethetransitionthatwillbestmatchthesubstrate

thickness.Thisisthetransitionthathasaminimaldis-

continuitybetweenthemicrostripgroundplaneand

theouterconductorofthelaunch.

Theoptimal substrate thickness=outerconductorra-

dius–innerconductorradius=C/2-A/2=(C-A)/2.This

isthedistancefromthebottomofthelaunchpintothe

outerdiameteroftheendlaunch.

Theoptimal trace widthis<Cand>A.

Thisisthewidthofthepin,totheouter

diameterofendlaunch.Fortraces

muchlargerthanthepinthetrace

canbetaperedforabettermatch.

Coplanar Data

Belowaretestresultsto50GHzfortwo1492-04A-5end

launchconnectorsona.008"Rogers4003coplanar

board.TheplotshowsbothVSWRandinsertionlossfor

thetestboardandthe2connectors.Similarboardsare

usedfortheotherlaunchgeometries.

0.000

-1.000

-2.000

-3.000

S11

S21

Frequency (GHz)

1.600

1.400

1.200

1.0000 5 10 15 20 25 30 35 40 45 50

0.000

-1.000

-2.000

-3.000

S11

S21

Frequency (GHz)

1.600

1.400

1.200

1.0000 5 10 15 20 25 30 35 40 45 50

N&

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Con

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ors

2.9

2 m

mC

onne

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sS

SM

AC

onne

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sA

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1.8

5 m

mC

onne

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s2

.40

mm

Con

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End

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Acc

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Inst

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s S

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s


N&

TNC

Connectors

2.9

2 m

mC

onnectorsS

SM

AC

onnectorsA

dapters1

.85

mm

Connectors

2.4

0 m

mC

onnectorsEnd Launch

Connectors

Cable

Connectors


Super S

MA

Connectors

LaunchA

ccessories

61

Southwest Microwave, Inc. www.southwestmicrowave.com9055SouthMcKemyStreet-Tempe,Arizona85284-2946USA•Telephone480-783-0201•FAX480-783-0401

Installation Procedure

Step 1: Mounttheendlaunchconnectorontheboard inthedesiredposition.

Step 2: Ensurethelaunchpiniscenteredonthetrace.

Step 3: Ensurethetransitionblockistightagainst theboard.

Step 4: Tightenthe1-72mountingscrewsuntilthe connectorissecured.

Special Version


Examples of Applications

Chipsetevaluationboards.

Testboards.

Notlimitedtolaunchingofftheedge oftheboardonly.

Usethemtotestboardsbeforeassembly.

Customflangesusedtomountboardssecurely.

Steps 5–7 (Optional)

Step 5: Solderthelaunchpintothetrace. (Note:Besurethesolderflowstheentire lengthofthelaunchpin/tracecontactarea.)

Step 6: Removeanyexcesssolder. (Note:Excesssolderwillaffectperformance.)

Step 7: Cleananyfluxorotherresiduefromaround thesolderjoint.

Dimensions:

Note: Information herein is believed by Southwest Microwave, Inc. to be accurate. However, Southwest Microwave assumes no responsibility for any omissions or errors or inaccuracies for its use or for any infringements of patents or other rights of third parties that may result from its use. Data is intended for informational purposes only and does not constitute a contract of sale or any express or implied warranty, including any warranty of merchantability or fitness for a particular purpose.

super sma connectors end launch connectors · southwest microwave, inc. • tempe, arizona 85284...

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