SARA - Operating principle

Impulse UWB SRR

Typical operational parameters of a impulse SRR are given in Table 1.

Parameter	typical value
Pulse Repetition Frequency (PRF)	3 MHz
Equivalent pulse power duration	800 ps
Occupied bandwidth (DSB_{‑20 dB})	2.5 GHz
Pulse duty cycle	- 26 dB
Residual carrier power	< ‑ 10 dBm
Peak power EIRP	+ 20 dBm

Table 1: Typical 24 GHz SRR operation parameters for impulse modulation

The discrete instantaneous impulse emission pattern has a sinx/x envelope and a residual power leakage at the carrier operating frequency (see Figure 1).

Figure 1: Discrete and dithered impulse spectrum