Ku-Band Line Driver Amplifiers (LDA)

LD-13S and LRK1 Series

Line Driver Amplifiers (LDAs) are specially designed for use in satellite earth stations and general purpose telecommunications applications. Utilizing proven GaAs FET technology, these amplifiers have been designed for reliable operation in both fixed and transportable applications.

Features

LD-13S series Ku-Band Line Driver Amplifiers (LDAs) are specially designed for use in satellite earth stations and general purpose telecommunications applications. Utilizing proven GaAs FET technology, these amplifiers have been designed for reliable operation in both fixed and transportable applications.

  • GaAs FET design
  • Internal regulator
  • Reverse polarity protection
  • Input/output isolators
  • High reliability
  • SMA (F) connectors

Options

  • 22, 32, or 42 dB minimum gain
  • +20 or +25 dBm min. output power at P1 dB
  • Transmit or receive frequency bands

Specifications

Parameter

Notes

Min.

Nom./Typ.(+)

Max.

Units

Frequency Band "E"
Band "R"
Band "M"
Band "V"
10.95
10.70
14.00
13.75
12.75
12.75
14.50
14.50
GHz
GHz
GHz
GHz
Gain “-13S22x”
“-13S32x”
“-13S42x”
22
32
42
25
35
45
dB
dB
dB
Gain Flatness Full Band
Per 40 MHz
±0.75
±0.25              
dB
dB
Noise Figure 3.5 4.0 dB
Power Output at 1 dB compression “-13Sxx2” (Standard)
“-13Sxx3” (High Power)
+15
+20
+17
+21
dBm
dBm
Third Order Output Intercept Point “-13Sxx2” (Standard)
“-13Sxx3” (High Power)
+25
+30
+27
+31
dBm
dBm
Group Delay per 40 MHz Linear
Parabolic
Ripple
0.03
0.003
1.0
ns/MHz
ns/MHz2
ns p-p
VSWR Input
Output
1.35
1.35
1.50
1.50
dBm
dBm
Maximum Input Power Damage threshold +10 dBm
Connectors Input/Output
Power


SMA Female
RFI Filter Soldier Terminal
Power Requirements Voltage
Current (Standard)
+11

+12
240
+16
330
Vdc
mA
Temperature Range Operating; case 0 +60 °C

Features

Redundant Line Driver Amplifier (LDA) systems minimize system downtime due to LDA failure by providing a spare LDA and an automatic means of switching to the spare upon failure of the primary LDA. A 1:1 system provides one spare LDA for one primary LDA. A 1:2 system provides one spare LDA for either of the two primary LDAs.

Used to overcome cable losses, the systems are designed for installation at satellite earth stations in standard 19-inch EIA equipment racks. The systems are designed to house LD-13S Series Ku-Band LDAs.

  • Standard 19” rack panel, 3.5” high
  • Dual redundant power supplies
  • Worldwide AC input capability
  • Amplifier bias current monitoring to detect faults
  • Manual or automatic operation
  • Manual override switch control on rear panel
  • Serial I/O
  • Offline I/O with isolators
  • Cooling fan
  • Gain matching of amplifiers to ±1 dB

Options

  • Variable attenuators located either at the output of each LDA or at each system path output

Operating Modes

  • Automatic Mode: In Automatic mode, if a failure is detected in an online amplifier, the standby amplifier is switched on line. Typical switchover time is 100 milliseconds. For 1:2 systems, in the case that both on-line amplifiers fail, priority is selectable to either Pol 1 or Pol 2. For either 1:1 or 1:2 systems, the unit will not automatically switch to a defective amplifier.
  • Manual Mode: The amplifiers can also be manually switched from the front panel or remotely. In Manual mode, automatic switching will not occur upon fault detection, although the monitor and alarm circuits still function.

Local or Remote Control

The systems include provision for remote status monitoring and operation. Typical uses are for sending status information to a centralized monitor and control system or for remotely controlling the system from a nearby building. All Local front panel features can be remotely controlled and monitored, except for the Remote/Local switch. In Remote mode, the front panel controls are inoperative, but the indicators continue to reflect the current operating state of the system. Remote status outputs are Form ‘C’ dry relay contacts capable of switching up to 100 Vdc at 100 mA. Remote control inputs are opto-isolator coupled for noise and common mode ground loop rejection.

Specifications

Parameter

Notes

Min.

Nom./Typ.(+)

Max.

Units

Frequency Band "E"
Band "R"
Band "M"
Band "V"
10.95
10.70
14.00
13.75
12.75
12.75
14.50
14.50
GHz
GHz
GHz
GHz
System Gain LDx-13S22x amplifiers
LDx-13S32x amplifiers
LDx-13S42x amplifiers
18
28
38
21
31
41
dB
dB
dB
Gain Flatness Full Band
With attenuators (Option)
±0.75
±1.5              
dB
dB
Gain Slope Per 40 MHz
With attenuators (Option)
    ±0.25
±0.3 0
dB
dB
Gain Match Between LDAs     1 dB
Noise Figure At +23 °C 5.5 6.0 dB
Power Output at 1 dB compression LDx-13Sxx2 amplifiers
LDx-13Sxx3 amplifiers
+13
+18
+15
+20
dBm
dBm
Third Order Output Intercept Point LDx-13Sxx2 amplifiers
LDx-13Sxx3 amplifiers
+23
+28
+25
+30
dBm
dBm
Group Delay per 40 MHz Linear
Parabolic
Ripple
0.03
0.003
1.0
ns/MHz
ns/MHz2
ns p-p
VSWR Input (50 ohms)
Output (50 ohms)
1.20
1.20
1.25
1.25
:1
:1
Maximum Input Power Damage threshold +10 dBm
Connectors RF Input/Output
Remote Input
Alarm Output
Serial I/O (RS-232/-422/-485)


Type N Female (50 ohms)
9-pin D Male
37-pin D Male
9-pin D Female
Operating Modes      Manual or Automatic    
Alarm Output Form 'C' contacts   100 Vdc / 100 mA    
Remote Inputs Control inputs   Contact closure to ground; withstand 5 V, sink 5 mA    
Power Requirements Voltage (autoranging)
Frequency
Power

47

90–135 or 175–264

50

63

Vac
Hz
W
Size     19 x 3.5 x 24
483 x 89 x 610
  inches
mm
Temperature Range Operating 0 +50 °C

Ku-Band Single Thread Outline Drawing

Satcom - Ku-Band Line Driver Amplifiers (LDA) Outline Drawing

Ku-Band Redundant Block Diagrams

Satcom - C-Band Redundant Line Driver Amplifiers (LDA) Block Diagrams

  • Single Thread Ku-Band (LD-13S Series)

    Features

    LD-13S series Ku-Band Line Driver Amplifiers (LDAs) are specially designed for use in satellite earth stations and general purpose telecommunications applications. Utilizing proven GaAs FET technology, these amplifiers have been designed for reliable operation in both fixed and transportable applications.

    • GaAs FET design
    • Internal regulator
    • Reverse polarity protection
    • Input/output isolators
    • High reliability
    • SMA (F) connectors

    Options

    • 22, 32, or 42 dB minimum gain
    • +20 or +25 dBm min. output power at P1 dB
    • Transmit or receive frequency bands

    Specifications

    Parameter

    Notes

    Min.

    Nom./Typ.(+)

    Max.

    Units

    Frequency Band "E"
    Band "R"
    Band "M"
    Band "V"
    10.95
    10.70
    14.00
    13.75
    12.75
    12.75
    14.50
    14.50
    GHz
    GHz
    GHz
    GHz
    Gain “-13S22x”
    “-13S32x”
    “-13S42x”
    22
    32
    42
    25
    35
    45
    dB
    dB
    dB
    Gain Flatness Full Band
    Per 40 MHz
    ±0.75
    ±0.25              
    dB
    dB
    Noise Figure 3.5 4.0 dB
    Power Output at 1 dB compression “-13Sxx2” (Standard)
    “-13Sxx3” (High Power)
    +15
    +20
    +17
    +21
    dBm
    dBm
    Third Order Output Intercept Point “-13Sxx2” (Standard)
    “-13Sxx3” (High Power)
    +25
    +30
    +27
    +31
    dBm
    dBm
    Group Delay per 40 MHz Linear
    Parabolic
    Ripple
    0.03
    0.003
    1.0
    ns/MHz
    ns/MHz2
    ns p-p
    VSWR Input
    Output
    1.35
    1.35
    1.50
    1.50
    dBm
    dBm
    Maximum Input Power Damage threshold +10 dBm
    Connectors Input/Output
    Power


    SMA Female
    RFI Filter Soldier Terminal
    Power Requirements Voltage
    Current (Standard)
    +11

    +12
    240
    +16
    330
    Vdc
    mA
    Temperature Range Operating; case 0 +60 °C
  • 1:1, 1:2 Redundant Ku-Band (LRK1 Series)

    Features

    Redundant Line Driver Amplifier (LDA) systems minimize system downtime due to LDA failure by providing a spare LDA and an automatic means of switching to the spare upon failure of the primary LDA. A 1:1 system provides one spare LDA for one primary LDA. A 1:2 system provides one spare LDA for either of the two primary LDAs.

    Used to overcome cable losses, the systems are designed for installation at satellite earth stations in standard 19-inch EIA equipment racks. The systems are designed to house LD-13S Series Ku-Band LDAs.

    • Standard 19” rack panel, 3.5” high
    • Dual redundant power supplies
    • Worldwide AC input capability
    • Amplifier bias current monitoring to detect faults
    • Manual or automatic operation
    • Manual override switch control on rear panel
    • Serial I/O
    • Offline I/O with isolators
    • Cooling fan
    • Gain matching of amplifiers to ±1 dB

    Options

    • Variable attenuators located either at the output of each LDA or at each system path output

    Operating Modes

    • Automatic Mode: In Automatic mode, if a failure is detected in an online amplifier, the standby amplifier is switched on line. Typical switchover time is 100 milliseconds. For 1:2 systems, in the case that both on-line amplifiers fail, priority is selectable to either Pol 1 or Pol 2. For either 1:1 or 1:2 systems, the unit will not automatically switch to a defective amplifier.
    • Manual Mode: The amplifiers can also be manually switched from the front panel or remotely. In Manual mode, automatic switching will not occur upon fault detection, although the monitor and alarm circuits still function.

    Local or Remote Control

    The systems include provision for remote status monitoring and operation. Typical uses are for sending status information to a centralized monitor and control system or for remotely controlling the system from a nearby building. All Local front panel features can be remotely controlled and monitored, except for the Remote/Local switch. In Remote mode, the front panel controls are inoperative, but the indicators continue to reflect the current operating state of the system. Remote status outputs are Form ‘C’ dry relay contacts capable of switching up to 100 Vdc at 100 mA. Remote control inputs are opto-isolator coupled for noise and common mode ground loop rejection.

    Specifications

    Parameter

    Notes

    Min.

    Nom./Typ.(+)

    Max.

    Units

    Frequency Band "E"
    Band "R"
    Band "M"
    Band "V"
    10.95
    10.70
    14.00
    13.75
    12.75
    12.75
    14.50
    14.50
    GHz
    GHz
    GHz
    GHz
    System Gain LDx-13S22x amplifiers
    LDx-13S32x amplifiers
    LDx-13S42x amplifiers
    18
    28
    38
    21
    31
    41
    dB
    dB
    dB
    Gain Flatness Full Band
    With attenuators (Option)
    ±0.75
    ±1.5              
    dB
    dB
    Gain Slope Per 40 MHz
    With attenuators (Option)
        ±0.25
    ±0.3 0
    dB
    dB
    Gain Match Between LDAs     1 dB
    Noise Figure At +23 °C 5.5 6.0 dB
    Power Output at 1 dB compression LDx-13Sxx2 amplifiers
    LDx-13Sxx3 amplifiers
    +13
    +18
    +15
    +20
    dBm
    dBm
    Third Order Output Intercept Point LDx-13Sxx2 amplifiers
    LDx-13Sxx3 amplifiers
    +23
    +28
    +25
    +30
    dBm
    dBm
    Group Delay per 40 MHz Linear
    Parabolic
    Ripple
    0.03
    0.003
    1.0
    ns/MHz
    ns/MHz2
    ns p-p
    VSWR Input (50 ohms)
    Output (50 ohms)
    1.20
    1.20
    1.25
    1.25
    :1
    :1
    Maximum Input Power Damage threshold +10 dBm
    Connectors RF Input/Output
    Remote Input
    Alarm Output
    Serial I/O (RS-232/-422/-485)


    Type N Female (50 ohms)
    9-pin D Male
    37-pin D Male
    9-pin D Female
    Operating Modes      Manual or Automatic    
    Alarm Output Form 'C' contacts   100 Vdc / 100 mA    
    Remote Inputs Control inputs   Contact closure to ground; withstand 5 V, sink 5 mA    
    Power Requirements Voltage (autoranging)
    Frequency
    Power

    47

    90–135 or 175–264

    50

    63

    Vac
    Hz
    W
    Size     19 x 3.5 x 24
    483 x 89 x 610
      inches
    mm
    Temperature Range Operating 0 +50 °C
  • Diagrams

    Ku-Band Single Thread Outline Drawing

    Satcom - Ku-Band Line Driver Amplifiers (LDA) Outline Drawing

    Ku-Band Redundant Block Diagrams

    Satcom - C-Band Redundant Line Driver Amplifiers (LDA) Block Diagrams

  • Literature

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