PFD / EPFD Tool

These various tools are combined to produce a PFD and EPFD tool with the following parameters:

• $f=$ frequency, entered either directly or using the frequency tool

• $P_{tx}=$ transmit power, entered directly, or calculated from transmit EIRP

• $G_{tx,peak}=$ transmit peak gain, entered either directly or using the peak gain tool

• $G_{\mathrm{tx},\mathrm{rel}}=$ transmit relative gain, entered either directly or using the offaxis gain tool

• $EIRP=$ transmit EIRP, either entered directly or calculated from $\mathrm{C}$ or using:

$$EIRP=P_{tx}+G_{tx,peak}+G_{tx,rel}$$

• $L_{sl}=$ spreading loss, either entered directly or using the spreading loss tool

• $L_{\text{other }}=$ other losses, entered directly

• $G_{rx,\text{ peak }}=$ receive peak gain entered either directly or using the peak gain tool

• $G_{rx,\text{ rel }}=$ receive relative gain, entered either directly or using the offaxis gain tool

• $PFD=$ receive power flux density calculated from EIRP using

$$PFD=EIRP-L_{f1}-L_{\text{other }}$$

• $N=$ receive noise, either entered directly or using the noise tool. Note that the noise tool includes the bandwidth

• Receive C/N, either entered directly or calculated using:

$$C=C-N$$

If the receive gain is included for EPFD calculations then:

• $EPFD=$ receive power flux density calculated from EIRP using

$$EPFD=EIRP-L_{fl}-L_{\text{other }}+G_{rx,rel}$$

Note that:

• If PFD or EPFD is changed directly the EIRP and transmit power fields update accordingly

• If the EIRP field is changed directly, the PFD/EPFD and transmit power fields update accordingly

• If the transmit power field is changed directly, the EIRP and $PFD/EPFD$ fields update accordingly