Frequency Shifter Design Inquiry

flux

Work Done
  • Updated project description to reflect a fully passive dual-chain X-Band upconverter with no DC-powered components (#PassiveUpconverter #DualChain #XBand #NoDCPower #BOMUnder300).
Pending Tasks
  • Define system architecture: create and save a Mermaid diagram showing external LO SMA → 2-way passive splitter → two passive mixers → 8–10 GHz post-filters → PI-match networks → PCB outputs.
  • Remove all DC-powered parts (PLLs/VCOs, LNAs, PAs, voltage regulators) and related power nets/connectors.
  • Add two 8–10 GHz bandpass filters as post-filters and two PI-match networks at each mixer output; connect through RF_OUT_CHAIN1 and RF_OUT_CHAIN2 nets.
  • Verify or add external LO SMA connector, passive 2-way RF splitter, and isolation pads; connect splitter outputs to mixer LO ports; standardize LO net names (LO_SRC, LO_SPLIT_1, LO_SPLIT_2).
  • Standardize all designators and net names; add via-fence and antenna keepout zones per project properties.
  • Run ERC and DRC checks; resolve any violations.
  • Regenerate BOM and confirm total cost is under $300.
Success Criteria Review
  • Schematic is not yet fully passive; LO/RF paths, post-filters, PI-matches, ERC/DRC compliance, and BOM cost have not been implemented or validated.
Next Step
Define the system architecture by drafting the required Mermaid diagram and saving it to the “System Architecture” project property.

To get started, talk to Flux or create a New Document.

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    Assets are files uploaded to this project which can be used in various ways.

    Separate Pink Replicator thumbnail
    Fully passive dual-chain X-Band upconverter with two 5–7 GHz SMA RF inputs, a single external LO SMA passively split to two mixer chains, and dual on-board 8–10 GHz 50 Ω PCB outputs with PI-match networks, no DC-powered components, BOM <$300 #PassiveUpconverter #DualChain #XBand #NoDCPower #BOMUnder300

    Properties

    GHz
    Ω
    Diagram
    


  
    
  
  
    
  



""RF Upconversion Chain 1""


""RF Upconversion Chain 2""























"LO_IN SMA\n~3 GHz"
"2-way LO Splitter (Passive)"
"RF1_IN SMA\n5-7 GHz"
"RF1 Pre-filter\n5-7 GHz BPF"
"Mixer 1 (Passive)"
"RF1 Post-filter\n8-10 GHz BPF"
"RF1 PI-match\n50 Ohm PCB Output"
"RF2_IN SMA\n5-7 GHz"
"RF2 Pre-filter\n5-7 GHz BPF"
"Mixer 2 (Passive)"
"RF2 Post-filter\n8-10 GHz BPF"
"RF2 PI-match\n50 Ohm PCB Output"
    dBm
    $
    GHz

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $7.97–$9.46

    Digi-Key

    $46.93–$110.67

    LCSC

    $148.82

    Mouser

    $251.16

    TME

    $0.01

    Verical

    $4.99–$18.92

    Controls