YO4HFU
23GHz Eclipse XCVR HB


 

Summary informations about 23GHz Eclipse XCVR High Band made by MTI. Unfortunately RX side is not suitable for 24GHz use due to internal microstrip band pass filters, low RX gain. TX side is usable by pushing TX IF level.

P/N: 131-141948-1102; 23U-SP-H
RX: 21,2-22,6GHz
TX: 22,4-23,6GHz
TX LO internal band pass filter: 21,09-21,59GHz, RX & TX common LO input is multiplied by x3. LO input band pass filters: 6,5-7,2GHz

LO signal provided by SYNTH 23 & 38GHz, P/N 131-141905-110, output range 6,7-7,2GHz, +6dBm, internal 10MHz TCXO.


TX testing at 23GHz

LO 7GHz, +5dBm
IF 2GHz, 0dBm max
Psat 23GHz >26dBm

TX testing at 24,048GHz
LO 7,2GHz, +5dBm
IF 2,448GHz
Pout 24,048GHz >20dBm with IF 0dBm. Almost -6dB less than 23GHz due to internal 22,4-23,6GHz BPF.
Psat 24,048GHz >29dBm with IF 10dBm ! Good linearity Pout vs TX IF level.

RX & TX consumption: 1,2A / 8,5V and 0,55A / 5V. TX inhibited: 0,3A / 8.5V

* NOTE: RX side must be supplied all the time because 1st MMIC LO stage is supplied from +8V RX.


23GHz Eclipse XCVR Unit
RX microwave module
TX microwave module
TX BPFs
Pinout RX & TX
- obtained by reverse engineering

SYNTH 23 & 38GHz
SYNTH pinout
- obtained by reverse engineering


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