rf-fo electrical specification jean-marie bussat john joseph
TRANSCRIPT
RF-FO Electrical Specification
Jean-Marie Bussat
John Joseph
RF-FO Simplified Block Diagram
Loop or Dipole Antenna
RF Low Noise Front End
LNA, Pre-selector and Attenuator
RF to Fiber Optic Transmitter
Trans-impedance Amplifier, Laser Diode
RF-FO Detailed Block Diagram: RF Front-End
Filter
100MHz LPF or
Bank of 4 Single Octave BPFs
RF Amplifier
Low Noise, High TOIP,
0.1 to 100MHz
BNC BNC Matching Network
Attenuator
20 dB Max10 Steps
RF-FO Specification: RF Front-EndFrequency Range 0.1 to 100MHz Required
Gain 10dB +/- 2dB, Nominal Required
Attenuation 20dB +/- 2dB, Maximum Required
Steps 10 Requested
Step Size 2dB +/-.5dB, Nominal Requested
Control Manual Set Requested
Input Impedance 50 Ohms, Nominal Requested
Output Impedance 50 Ohms, Nominal Goal
Load VSWR 1.5:1, Nominal Goal
1dB Compression TBD
Dynamic Range 60dB, Nominal Requested, Goal
Noise Figure 10dB, Nominal Goal
Harmonic Suppression -20dBc below the fundamental for Harmonics > 120MHz Goal
Filter Banks TBD
Power Connector TBD
RF Connectors BNC type (Input/Output Required
Size TBD (Goal is to be as small as possible)(2”x2”?)
Operating Temperature 0 to +70 C
Storage Temperature -55 to 125 C
DC Voltage 12V Nominal, 14V Absolute Maximum Assumes “Gel-Cell” type
DC Current 500mA Maximum
RF-FO Detailed Block Diagram: FO Transmitter
Trans-Impedance Amplifier
Laser DiodeBNC ST type
RF-FO Specification: FO Transmitter
Frequency Range 0.1 to 100MHz Required
Optical Power Output < 1mW Goal
Wavelength TBD (Dependent on FO Receiver) (850nm to 1.3um) Goal
Linearity < 1% Goal
Dynamic Range 60dB, Nominal Requested, Goal
Input Impedance 50 ohms, Nominal Goal
Power Connector TBD
RF Connector (Input) BNC type Required
FO Connector (Output) ST Goal
Size TBD (Goal is to be as small as possible)
Operating Temperature -25 to +85 C
Storage Temperature -0 to 70 C
DC Voltage 12V Nominal, 14V Absolute Maximum Assumes “Gel-Cell” type
DC Current TBD
RF-FO Detailed Block Diagram: FO Receiver
Trans-Impedance Amplifier
PIN DiodeBNC ST type
RF-FO Specification: FO Receiver
Frequency Range 0.1 to 100MHz Required
Optical Sensitivity < 1uW Goal
Wavelength TBD (850nm to 1.3um) Goal
Linearity < 1% Goal
Dynamic Range 60dB, Nominal Requested, Goal
Output Impedance 50 ohms, Nominal Goal
Power Connector TBD
RF Connector (Output) BNC type Required
FO Connector (Input) ST Goal
Size TBD (Goal is to be as small as possible)
Operating Temperature -25 to +85 C
Storage Temperature -0 to 70 C
DC Voltage 12V Nominal, 14V Absolute Maximum Assumes “Gel-Cell” type
DC Current TBD