RF Engineer, Frequency Synthesis

Viasat, Inc.•Tempe, AZ

36d

About The Position

We are seeking an experienced RF Engineer with deep expertise in frequency synthesis to contribute to D2D and future payload architectures. This role delivers hands-on engineering in PLL design, VCO development, and low phase noise reference oscillator systems, including vendor oversight and clock distribution. The position operates with limited supervision on defined RF programs and applies strong technical judgment to ensure design, integration, and performance success.

Requirements

Bachelor’s degree in Electrical Engineering or related field, or equivalent professional experience
8+ years of RF engineering experience supporting frequency synthesis hardware
Demonstrated expertise in PLL design, VCO design, and reference oscillator selection/integration
Strong experience with clocking systems, frequency generation, and signal integrity
Experience working with vendors and manufacturing partners, including oscillator suppliers
Ability to work independently on defined technical problems with minimal instruction

Nice To Haves

Experience supporting spacecraft or payload RF frequency generation systems
Familiarity with reference oscillator integration and production environments
Deep understanding of phase noise, jitter, and frequency stability analysis
Strong analytical skills and disciplined documentation practices
Clear communication of complex RF and frequency synthesis topics to cross-disciplinary teams

Responsibilities

Design and develop frequency synthesis architectures, including PLLs, VCOs, and low phase noise reference oscillator subsystems
Perform RF analysis, simulation, and validation to ensure compliance with performance requirements, including phase noise, jitter, and spectral purity
Lead schematic capture and design implementation for frequency generation and clock distribution circuits
Define and optimize clock distribution networks for low jitter and minimal coupling across RF subsystems
Provide technical oversight of oscillator vendors, including specification definition, performance evaluation, and qualification
Support integration of RF hardware with reference oscillator systems and spacecraft subsystems
Contribute to RF architecture trade studies, particularly around frequency planning, LO generation, and phase noise optimization
Interface with suppliers and manufacturing partners to support RF hardware production, validation, and component selection
Participate in RF design reviews, test readiness reviews, and anomaly resolution efforts
Identify RF performance risks (e.g., phase noise, spurs, coupling) and develop mitigation strategies