Navigation, Timing & Positioning RF Hardware

Define the interferer waveform, frequency, bandwidth, duty cycle, coupling plane, wanted-signal state, exposure and measurable degradation or recovery metric instead of relying on an anti-jam label.

Budget antenna gain, pre-LNA loss, LNA noise and gain, filtering, cable loss, active-antenna power, return loss, linearity, receiver range and blocker headroom in physical path order.

Verify every delivered timing channel at its real load by separating fixed calibrated delay, channel skew, environmental drift, output level, edge or phase behavior and path-dependent uncertainty.

Holdover is the bounded time or frequency performance after GNSS reference loss, defined by the starting state, outage duration, environment, local oscillator, steering history, maximum time error and recovery rule.

A shared reference aligns average frequency, but deterministic relative phase also depends on trigger timing, divider state, path delay, retune behavior, relock and restart conditions.

Specify accuracy, temperature, aging and holdover as separate error terms with their own interval, environment, warm-up and reference history instead of one unexplained ppm value.

Use phase-noise spot or mask limits when offset regions drive RF behavior; use integrated jitter only when the project defines the integration band and a time-domain error budget.

PLL settling time is the time from a defined disturbance until the RF output enters and remains inside specified frequency, phase, amplitude and spectral limits; lock detect is only an internal status signal.