Transmitter¶

The transmitter asset represents an RF source. It is linked to an antenna and provides transmit frequency, power, polarization, and optional modulation or bandwidth parameters.

Role in ASTROLAB¶

Workflow	Transmitter role
Link budget	Provides transmit power, frequency, EIRP, bandwidth, data rate, and polarization.
RF chain resolution	Linked to a transmitting antenna.
Reports	Documents communication hardware assumptions.

Transmitter Chain¶

flowchart LR
    TX["Transmitter"] --> A["Linked Antenna"]
    TX --> P["Power"]
    TX --> F["Frequency"]
    TX --> POL["Polarization"]
    A --> E["Directional EIRP"]

Main Parameters¶

Field	Meaning
`antenna_guid`	Antenna used by the transmitter.
`transmitter_type`	`Simple` or `Complex`.
`parameters`	Schema-driven RF parameters.
`signal_type`	Signal category, currently RF-oriented.

Simple Transmitter Parameters¶

Parameter	Meaning
`frequency`	Carrier frequency.
`power`	Transmit power.
`polarization`	Linear, RHCP, or LHCP.
`additional_gain_dB`	Extra gain added to EIRP.
`additional_loss_dB`	Extra loss subtracted from EIRP.

Complex Transmitter Additions¶

Parameter	Meaning
`data_rate`	Data rate.
`bandwidth`	Signal bandwidth.
`modulation`	Modulation type.
`filter_type`	Optional filter model.
`filter_order`	Filter order.

Validation Notes¶

A transmitter should be linked to an antenna.
Power and frequency must be positive.
The transmitter frequency should be compatible with the antenna design frequency.