Ansys2025全球仿真大会：多端口波导缝隙天线阵列的仿真设计

Designofmultiple

portwaveguide

slot

antennafor

powercombining朱传明贾海昆/清华大学©2025ANSYS,Inc.Outline•

Motivation•

Single-Feed

Waveguide

Antenna

Array•

Multi-Feed

Waveguide

Antenna

Array•

Multi-beam

Applications•

ConclusionMotivation

o

Multimoden

SwitchablePower:LRR/SRRn

Multi-feedantenna

forimprovingEIRPn

ConstantFoV

Powercombiningbasedonantenna

arrayn

Largecircuit

sizesn

narrowbeamwidthMotivation

Powercombiningbasedonlossypassivepowerdividern

Increaseinsertionlossesn

Largeimpedance

scaleration

DecreaseoperatedbandwidthMotivationMotivationn

Maintainsamebexamwidthwithsingle-feedantennan

Samepanelsizewithsingle

antennan

Lowerinsertionlosscomparedwithcomplicatedpowercombiner

Powercombiningbasedonmulti-feedwaveguideantennaMotivationOutline•

Motivation•

Single-Feed

Waveguide

Antenna

Array•

Multi-Feed

Waveguide

Antenna

Array•

Multi-beam

Applications•

ConclusionCoaxial

probe

to

waveguide

transition▲Port

1Probe_lengthPort

3Port

2

TE10

modeexcitedbycoaxialprobe;

Length

of

slot~λg/2;

Distancebetweenslots~λg

;

ChooseproperoffsetxformatchingSingle-feed

waveguide

antenna

array

1

×

12slotwaveguideantenna

arrayn

10dBBW

≥

180

MHz;n

Maximumgain

17.5dBi;n

HPBWof

5.3°/81.8°for

E/HplaneSingle-feed

waveguide

antenna

arrayOutline•

Motivation•

Single-Feed

Waveguide

Antenna

Array•

Multi-Feed

Waveguide

Antenna

Array•

Multi-beam

Applications•

Conclusion

SpatialTE10

modeexcitedbywaveguide

E-Field

out

of

phase

at

distance

of

λg/2

Multipleportssimultaneouslyexcited

ThesameBWwithsingle-feedcounterpart≥

180

MHzMulti-feedWaveguideAntenna

SpatialTE10

modeexcitedbywaveguide

E-Field

out

of

phase

at

distance

of

λg/2

MultipleportssimultaneouslyexcitedMulti-feedWaveguideAntenna

ThesameBWwithsingle-feedcounterpart≥

180

MHz

Almostsameradiationpatternamongthem;

Function

of

power

combiningComparisonsof

Single/multi-feedantennaOutline•

Motivation•

Single-Feed

Waveguide

Antenna

Array•

Multi-Feed

Waveguide

Antenna

Array•

Multi-beam

Applications•

ConclusionMultiplebeamsof

dual-feedantennaarray

Dual-feedPhasedarray

Distance

of

0.65λ

Beamsteeringof

±30°atH-plane

Sidelobelevelof

about−12

dBMultiplebeamsof

dual-feedantennaarrayMultiplebeamsof

dual-feedantennaarrayMultiplebeamsof

dual-feedantennaarrayTimeFADDM55minFull-wave74minComparisons

ofFADDMand

Full-waveFull-waveFADDMMultiplebeamsof

dual-feedantennaarray

Highgainof19.2dBi,wideHBPW

of

49。,

SLLof

−17.5dB

Wide-sectorbeamconstitutedbymultiplepencilbeamsMultiplebeamsof

dual-feedantennaarray

Highgainof19.2dBi,wideHBPW

of

49。,

SLLof

−17.5dB

Wide-sectorbeamconstitutedbymultiplepencilbeamsOutline•

Motivation•

Single-Feed

Waveguide

Antenna

Array•

Multi-Feed

Waveguide

Antenna

Array•

Multi-beam

Applications•

ConclusionConclusiono

Theproposed

multi-feedantennaachieveson-antennapower

combining.o

Multi-feed

antenna

not

only

maintains

the

same

operated

bandwidth

and

beamwidth

asthesingle-feedantenna/butalso

improves