Low Noise Amplifiers are specially designed for satellite earth station receiver front ends and other telecommunications applications. Utilizing state-of-the-art HEMT and MMIC technology, these amplifiers have been designed for both fixed and transportable applications.
  • State-of-the-art HEMT and GaAs MMIC technology
  • Designed for both fixed and transportable applications
  • Cryogenic hot/cold load test

 

Product Details

Features

LKKC-20125 Ka-Band Ultra Low Noise Amplifier is specially designed for satellite earth station and other telecommunications applications. Utilizing state-of-the-art HEMT and GaAs MMIC technology, this amplifier has been designed for both fixed and transportable applications. The noise temperature specification is guaranteed over the full bandwidth of the LNA, and measured using a cryogenic hot/cold load test setup.

  • Wideband coverage, 17.7-21.2 GHz
  • Gain Level, 50 dB
  • Low noise temperature, 125 K
  • High Output power, P1 dB = +20 dBm
  • Temperature compensated gain
  • High reliability HEMT design
  • Input/output isolators
  • Reverse polarity protection
  • Wide operating temperature range, -40 °C to +70 °C
  • Form ‘A’ alarm (deviation from nominal current)
  • Weatherized design for outdoor applications

 

Specifications

Parameter

Notes

Min.

Nom./Typ.1

Max.

Units

Frequency 17.7 21.2 GHz
Gain 50 54 dB
Gain Flatness Full band, at max. gain
Per 40 MHz, at max. gain
± 1
± 0.25
dB
dB
VSWR Input
Output
  1.25
1.40
1.30
1.50
:1
:1
Noise Temperature A At +23 °C 125 K
Power Output at 1 dB Compression (P1 dB) +20 +22 dBm
3rd Order Intercept Point, OIP3 +27 +29 dBm
Group Delay per 40 MHz Linear
Parabolic
Ripple
0.01
0.0010.20
ns/MHz
ns/MHz2
ns p-p
AM/PM Conversion -5 dBm Output 0.05 °/dB
Gain Stability (Constant Temp.) Short term (10 min)
Medium term (24 hrs)
Long term (1 week)
±0.1
±0.2
±0.5
dB
dB
dB
Gain Stability Versus temperature over operational temp range 5 dB pk-pk
Maximum Input Power Damage threshold
Desensitization threshold, 27.0–31.0 GHz

0

-15

dBm
dBm
Connectors Input
Output
Power/Alarm
WR42 Cover Flange (#4-40 THD holes)
SMA Female
PT02E-8-4P-027 (mate supplied)
Waveguide Pressure Dry Air

0.5 5.0 psig
Power Requirements Voltage Current,
@ P1 dB
11

28
600
Vdc
mA
Operating Conditions
Temperature
Relative Humidity
Altitude

TAMB
Condensing
Above AMSL

-40
0

+70
100
10000

°C
%
ft
Non-Operating Conditions
Temperature
Relative Humidity
Altitude

TAMB
Condensing
Above AMSL

-50
0

+70
100
45000

°C
%
ft
MTBF +30°C, Ground Fixed   129,000 hrs
Dimensions L x W x H (Including Connectors) 5.23 (133) x 2.50 (63.5) x 1.18 (30) in (mm)
Weight 0.75 (0.34) lb (kg)
Exterior Finish Painted Commercial White

 

For more information and specifications, view the Wideband Ka-Band (LKKC-20125) Datasheet.

LK-20S000 series Ka-Band Ultra Low Noise Amplifiers are specially designed for satellite earth station and other telecommunications applications. Utilizing state-of-the-art HEMT and GaAs FET technology, these amplifiers have been designed for both fixed and transportable applications. High performance models are available with noise temperatures from 130 K to 110 K. All noise temperature specifications are guaranteed over the full bandwidth of the LNA.

Features

  • Wideband coverage
  • Noise temperatures to 110 K
  • High reliability HEMT design
  • Input/output isolators
  • Reverse polarity protection
  • Wide operating temperature range, -40 °C to +70 °C
  • Form ‘A’ alarm 

Options

  • Low gain, 50 dB typical
  • High Output power, P1 dB = +20 dBm minimum
  • Excellent guaranteed gain stability due to built-in temperature compensation circuit (test data provided)
  • Universal input AC power supply 

 

Specifications

Parameter

Notes

Min.

Nom./Typ.+

Max.

Units

Frequency Band "A"
Band "B"
18.2
20.2
20.2
21.2
GHz
GHz
Gain Standard
Option 1
57
47
60
50
63
53
dB
dB
Gain Flatness Full band, at max. gain
Per 40 MHz, at max. gain
± 1.0
± 0.2
dB
dB
VSWR Input
Output
1.25
1.40
1.30
1.50
:1
:1
Power Output at 1 dB Compression (P1 dB) Standard
Option 2
+12
+20
+14
+22
dBm
dBm
3rd Order Intercept Point, OIP3 Standard
Option 2
+22
+28
+24
+30
dBm
dBm
Group Delay per 40 MHz Linear
Parabolic
Ripple
0.01
0.001
0.1
ns/MHz
ns/MHz2
ns p-p
AM/PM Conversion -5 dBm Output 0.05 °/dB
Gain Stability (Constant Temp.) Short term (10 min)
Medium term (24 hrs)
Long term (1 week)
±0.1
±0.2
±0.5

dB
dB
dB
Gain Stability Versus temperature (Standard)
Improved stability (Option 3)
over operational temp range


-0.06


2.0 dB per °C
dB pk-pk

Maximum Input Power Damage threshold
Desensitization threshold, 29.0–31.0 GHz

0

-25

dBm
dBm
Connectors Input
Output
Power/Alarm
WR42 Cover Flange (#4-40 THD holes)
SMA Female
PT02E-8-4P-027 (mate supplied)
Waveguide Pressure Dry Air 0.5 5.0 psig
Power Requirements Voltage (Standard)
Current, @ P1 dB (Standard)
Current, @ P1 dB (Option 1)
Current, @ P1 dB (Option 2)
Voltage (Option 4)B
11



90
15




24
600
400
600
265
Vdc
mA
mA
mA
Vac
Operating Temperature TAMB (Standard)
TAMB (Option 4)B

-40
-40
+70
+60
°C
°C

 

For more information and specifications, view the Single Thread Ka-Band (LK-20S000 Series) Datasheet.

Redundant LNA systems minimize system downtime due to LNA failure by providing a spare LNA and an automatic means of switching to the spare upon failure of a primary LNA. A 1:1 system provides one spare LNA for one primary LNA. A 1:2 system provides a spare LNA for either of two primary LNAs. The systems consist of an outdoor plate assembly which mounts at the antenna hub, an indoor control panel and interconnecting control cable. 

Plate Assembly Features

  • LK-20S000 Series Ka-band Low Noise Amplifiers (LNAs)
  • High quality dual waveguide/coaxial switches
  • Manual override
  • Waveguide input flanges
  • Output coaxial isolators standard
  • Transmit reject filter(s), input crossguide coupler(s), output coax couplers, and offline I/O options available

Redundancy Controller Features

  • 10/100 Base T Ethernet network interface
  • Supports SNMP v1, v2c, and v3
  • Rack-mount chassis, 19" wide, 1¾" (1 RU) high
  • Dual, redundant power supplies
  • Manual or automatic operation
  • Monitors unit currents, external alarms, or both
  • Automatically switches RF path to standby unit when unit failure occurs
  • User-selectable RS-232/-422/-485 serial I/O M&C interface
  • Parallel I/O M&C interface
  • Menu-driven user configuration of all options
  • Front panel graphically depicts switch positions and unit status
  • Worldwide universal AC input capability standard; consult factory for DC prime power
  • Audible alarm
  • CE certified and RoHS compliant; EAR 99

 

Specifications

Parameter

Notes

Min.

Nom./Typ.+

Max.

Units

Frequency Band "A"
Band "B"
18.2
20.2
20.2
21.2
GHz
GHz
Gain Standard LNA
LNA with Option 1
54
44
60
50
dB
dB
Gain Flatness Full band
Per 40 MHz
± 1.5
± 0.5
dB
dB
Gain Stability (Constant Temp.) Short term (10 min)
Medium term (24 hrs)
Long term (1 week)
±0.1
±0.2
±0.5
dB
dB
dB
Gain Stability Versus temperature (Standard)
Contact factory for improved
stability LNA with Option 3
-0.06


dB per °C


VSWR Input, standard
Input, with System Option B, Tx filter
Output
1.25
1.30
1.20
1.30
1.50
1.25
:1
:1
:1
Power Output at 1 dB Compression (P1 dB) Standard LNA
LNA with Option 2
LNA with Option 2 & System Option D, output couplers
+10
+18
+17
+13
+20
+19
dBm
dBm
dBm
3rd Order Intercept Point, OIP3 Standard LNA
LNA with Option 2
LNA with Option 2 & System Option D, output couplers
+18
+26
+25
+20
+28
+27
dBm
dBm
dBm
AM/PM Conversion -5 dBm Output 0.05 °/dB
Group Delay per 40 MHz Linear
Parabolic
Ripple
0.02
0.002
0.2
ns/MHz
ns/MHz2
ns p-p
Maximum Input Power without damage 0 dBm
Damage threshold
Desensitization threshold, 27.5–31.0 GHz
Standard system
With System Option B, Tx filter
-20
+30
dBm
dBm
Connectors RF Input
RF Output
Offline In/Out, Coupler In/Out
WR42F Waveguide Flange
SMA FemaleA
SMA FemaleA
Temperature Range Switch Plate Assy -40   +60 °C

 

For more information and specifications, view the Ka-Band Redundant LNA Systems (LRKA-1000 Series) Datasheet.

Wideband Ka-Band (LKKC-20125) Diagram

Satcom - Wideband Ka-Band LNA Diagram

 

Single Thread Ka-Band (LK-20S000 Series) Outline Drawing

Satcom - Single Thread Ka-Band LNA Drawing

 

Ka-Band Redundant LNA Systems (LRKA-1000 Series) Outline Drawing

Satcom - Redundant Ka-Band LNA Outline Drawing