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40.625 MHz Phase Generator Unit

 16.  4.  4.  4. 40.625 MHz Phase Generator Unit. 40.625 MHz +10 dBm. -3 dB. +10 dbm. 40.625 1dbm. 50.625+  +22 dBM. *. LP. BP. 40.625+  1dbm. 1. *. Outputs for Tx and Rx phasing. +10 dbm. LP. BP. 40.625+2  1dbm. 1. *. 50.625 MHz +22 dBm.  16. 40.625+14 

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40.625 MHz Phase Generator Unit

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  1. 16 4 4 4 40.625 MHz Phase Generator Unit 40.625 MHz +10 dBm -3 dB +10 dbm 40.625 1dbm 50.625+ +22 dBM * LP BP 40.625+ 1dbm 1 * Outputs for Tx and Rx phasing +10 dbm LP BP 40.625+2 1dbm 1 * 50.625 MHz +22 dBm 16 40.625+14 1dbm * LP BP 4 40.625+15 1dbm Cables indicated by * are cut to give in-phase outputs on all 16 ports, if f = 0.

  2. 4 Parts for 40.625 MHz Phase Generator Unit LP RF Mixer MiniCircuits ZFM-150 30 Required 21.4 MHz Lo-Pass Filter MiniCircuits SLP-21.4 15 Required 16 1:4 Power Combiner MiniCircuits ZMSC-4-3 16 required BP 40 MHz Band-Pass Filter KR Electronics KR2395-40-SMA 15 required RF Amplifier MiniCircuits ZFL-500-HLN 15 Required -3 dB 3 dB Attenuator Minicircuits VAT-3 1 Required 1:16 Power Combiner MiniCircuits ZFSC-16-1 2 required

  3. ÷2 To Phase Generator Unit 50.625 MHz +22 dbm H SW +13 To Digital Rx Card 50.625 MHz Phase Shifter Unit 10 -2 -2 1 H H Phase adjust -6dB 2 -3dB +15 SW SW SW SW SW SW SW 0 1 1 2 2 3 3 0 /16 50.625 MHz +13 dBm /8 /2 /4 ÷2 SW SW SW SW SW SW SW SW ??dB -2 H 7 6 6 7 5 4 4 5 /256 /128 /64 /32 50.625 MHz + 22 dbm To Phase Generator Unit -5dB To Interferometer/Rx Unit +1 1st LO in +10 dbm 10 MHz Ref 5dBm -1 -9dB 2 -4 40.625 BP 13 +22 -?dB -?dB H 1st LO Pulse for Tx Pulse Unit 40.625 MHz 10 dBm -3dB ÷2 TX on -7

  4. 2 50.625 MHz Phase Shifter Unit SW H SPDP Switch MiniCircuits ZYSW-2-50DR 16 Required RF Amplifier MiniCircuits ZFL-500-HLN 3 Required RF Amplifier MiniCircuits ZFL-2500-VH 3 Required 1:2 Power Combiner MInicircuits ZFSC-2-1 5 Required -?dB 40.625 BP RF Mixer MiniCircuits ZFM-150 1 Required Coaxial Attenuators VAT-? Count up different values that you need, get extras and extra values. You need to adjust to create proper output values. Variable Gain Amplifier MiniCircuits ZFL-1000GH 25 microsec rise time 1 Required I MHz bandwidth filter at 40.625 MHz. K&L Microwave 5LB30-40.625/U1-O/O Cost: ~$325 in quantities of 6

  5. 40.625 1dbm fTX +15 dBm To transmitter unit 1 LP -5 -5 40.625+ 1dbm fTX - +15 dBm LP To transmitter unit 2 -5 -5 40.625+2 1dbm fTX -2 +15 dBm LP To transmitter unit 3 -5 -5 • • • 40.625+13 1dbm fTX -13 +15 dBm LP To transmitter unit 14 -5 -5 40.625+14 1dbm fTX -14 +15 dBm LP To transmitter unit 15 -5 -5 40.625+15 1dbm fTX -15 +15 dBm LP To transmitter unit 16 -5 -5 Transmitter Pulse Unit – Frequency and Phase 1st LO Pulse +22 dBm ÷16

  6. Transmitter Pulse Unit – Frequency and Phase LP RF Mixer MiniCircuits ZFM-150 16 Required 21.4 MHz Lo-Pass Filter MiniCircuits SLP-21.4 16 Required ÷16 RF Amplifier MiniCircuits ZFL-500-HLN 33 Required 1:16 Power Combiner MiniCircuits ZFSC-16-1 1 required

  7. -10 -10 -10 -11db -11db -11db Rx Summing Unit (Output at HF Frequency) Located on Interferometer board 1st L.O. 10 dbm Rx16 54M BP -100 -80 -88 40.625 +0 1 dbm +10 -63 dBm 50  Rx15 16 54M BP -66 -100 -80 -88 40.625 +1 1 dbm -10 +10 SW -11db Rx on 40.625 MHz +10 dBm -66 -76 dBm -63 dBm 40.625 BP LP To interferometer board -66 -47 -28 +4dbm max To Digital Rx Rx2 54M BP -100 -80 -88 40.625 +14 1 dbm +10 Rx1 54M BP -100 -80 -88 40.625 +15 1 dbm +10

  8. -11db Rx Summing Unit LP RF Mixer MiniCircuits ZFM-150 17 Required 21.4 MHz Lo-Pass Filter MiniCircuits SLP-21.4 1 Required 11 dB Attenuator Minicircuits VAT-11 16 Required ÷16 54M BP RF Amplifier MiniCircuits ZFL-500-HLN 16 Required 54 MHz Band-Pass Filter KR Electronics KR2590-2 16 required* 1:16 Power Combiner MiniCircuits ZFSC-16-1 1 required *We designed and constructed our own 54 MHz filter. We can provide the design, but I believe it may be more time and cost efficient to purchase the indicated filter from KR Electronics. We did not know about this filter nor of the difficulty in making narrow band filters when we made our decision.

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