AN-158-R03

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9

3.6 Trans-Hybrid Loss (4-Wire Return Loss)

The hybrid network is also known as the 2-to-4 wire

converter. The loss from transmit path to receive path

is known as trans-hybrid loss, measured in decibels.

LITELINK III trans-hybrid loss can be calculated as:

4. Reference Designations

The following table connects reference designators for

circuit elements used in this application note with chip

pin mnemonics. See also the schematic

“LITELINK III

20

1

0.65

---------

1

1.5

-------

------------

------------

1

------------

–

------------

------------

+

log

–

=

Designator

Connects Pin

To

ZNT

BR-

NTF

pin NTS

ZTX

BR-

ZTX

pin NTS

NTF

pin RXSL

RX

pin RXF

TXF

pin TXS

TX

pin TXSM

ZDC

BR-

BR+

pin DCS1

DCS1

pin DCS2

DCS1

BR-

( (

( ( ( ( ( ( (

(

( ( ( (