Sr. Antenna Design Engineer

PierSight Space; Ahmedabad District; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

PierSight Space seeks a Sr. Antenna Design Engineer to lead the design and development of a large deployable reflectarray antenna for spaceborne SAR payloads. You will drive from concept to flight hardware, optimize feed systems, and perform advanced modeling and measurements.

You will collaborate with mechanical teams on folding architecture, envelope, and surface accuracy, while controlling gain, beamwidth, sidelobes, cross-polarization, and bandwidth.

Qualifications

• 4–6 years of EM/antenna design experience with reflectarray/phased-array/aperture work.
• Proficiency with ANSYS HFSS for unit-cell and full-wave simulation.
• Experience with TICRA tools for reflectarray analysis is a plus.
• Solid understanding of reflectarray theory and unit-cell phase response.
• Familiarity with deployable/large-aperture concepts and RF-mechanical tradeoffs.
• Understanding SAR antenna requirements and space-hardware constraints.
• Hands-on RF lab instrumentation and antenna measurement experience.
• Excellent interpersonal and communication skills.

Responsibilities

• Lead design and development of deployable reflectarray antennas for spaceborne SAR payloads.
• Design and optimize the horn feed system and illumination.
• Perform full-wave and physical-optics modeling including Floquet analysis.
• Optimize antenna for deployment tolerances and manufacturing
• Collaborate with mechanical teams on folding architecture and envelope.
• Analyze gain, beamwidth, sidelobes, cross-polarization, bandwidth.
• Plan antenna characterization and near-field/far-field measurements campaigns.
• Evaluate vendors for fabrication, materials and RF hardware.

Skills

Antenna design

Reflectarray

Phased-array

Aperture antennas

HFSS

GRASP

QUPES

ESTEEM

Floquet analysis

Deployment tradeoffs

RF measurement

SAR antennas

Communication skills

Tools

ANSYS HFSS

GRASP

QUPES

ESTEEM

Job description

Sr. Antenna Design Engineer at PierSight

We are seeking an exceptional Sr. Antenna Design Engineer to lead the design and development of a large deployable reflectarray antenna for our spaceborne SAR payloads.

• Design and develop deployable reflectarray antennas for spaceborne Synthetic Aperture Radar (SAR) payloads, from concept through flight hardware
• Design and optimize the Horn antenna feed system and characterize feed-to-aperture illumination
• Perform full-wave and physical-optics modeling, including periodic (Floquet) unit-cell analysis and full-aperture radiation prediction
• Optimize the antenna for deployment/manufacturing tolerances.
• Work closely with mechanical and structures teams on the folding architecture, stowed/deployed envelope, and surface accuracy requirements for a large aperture
• Analyze and control key performance metrics: gain, beamwidth, sidelobe levels, cross-polarization, and bandwidth, including sensitivity to deployment repeatability and thermal distortion
• Perform engineering calculations and link/aperture trade studies to determine antenna performance from design parameters
• Plan and perform antenna characterization and near-field/far-field measurement campaigns, including verification of deployed performance
• Evaluate vendors and supply chain for antenna fabrication, materials, and RF hardware

Requirements:

• 4–6 years of experience in EM/antenna design, with hands‑on reflectarray, phased-array, or aperture‑antenna work strongly preferred
• Working knowledge of ANSYS HFSS is required (unit‑cell and full‑wave simulation)
• Experience with TICRA Tools (GRASP / QUPES / ESTEEM) for reflectarray and reflector analysis is a strong plus
• Solid grasp of reflectarray theory: unit‑cell phase response, periodic boundary/Floquet analysis, feed design, and aperture synthesis
• Familiarity with deployable/large‑aperture antenna concepts and the RF‑mechanical tradeoffs(surface tolerance, panel alignment, deployment repeatability)
• Understanding of SAR antenna requirements (X - band as applicable) and space-hardware constraints
• Hands‑on experience with RF lab instrumentation and antenna measurement (network analyzers, spectrum analyzers, near‑field/far‑field ranges)
• Excellent interpersonal and communication skills