Name: Ka-Band Single LNB 19.7-20.2GHz Low Noise Block with Linear & Circular Polarization and 1.2dB Noise Figure
Brand: Chenzhou Seton Technology Co., Ltd
SKU: KA-Band Single LNB
Availability: InStock

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Ka-Band Single LNB 19.7-20.2GHz Low Noise Block with Linear & Circular Polarization and 1.2dB Noise Figure

19.7-20.2GHz Ka-Band Single LNB

Linear & Circular Polarization Low Noise Block

1.2dB Noise Figure Satellite LNB

Place of Origin:

CHINA

Brand Name:

SETON

Certification:

CE, ISO, RoHS

Model Number:

KA-Band Single LNB

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Product Details

Input Frequency Range:

19.7GHz ~ 20.2GHz

Output Frequency Range:

950MHz ~ 1450MHz

LO Frequency:

21.15GHz

Noise Figure:

1.2dB(Typ.)/ 1.8dB(Max.)

Conversion Gain:

55dB~65dB/ 60dB(Typ.)

Highlight:

19.7-20.2GHz Ka-Band Single LNB

Linear & Circular Polarization Low Noise Block

1.2dB Noise Figure Satellite LNB

Payment & Shipping Terms

Minimum Order Quantity

1000pcs

Packaging Details

CARTON

Delivery Time

30-35 days

Payment Terms

T/T,Western Union

Supply Ability

15 million pieces

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86-0735-8888458

huang@setontech.cn

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Product Description

Ka-Band Single LNB 19.7-20.2GHz

Product Overview

This KA-Band Single LNB operates at 19.7~20.2 GHz with customizable frequency design options. It supports both linear (Vertical/Horizontal) and circular (Left-hand/Right-hand) polarization.

In today's rapidly evolving satellite communications landscape, the Ka-band has become the core frequency band for High-Throughput Satellites (HTS), VSAT networks, and military communications. Our professional-grade Ka-band Single LNB, featuring advanced PLL (Phase-Locked Loop) technology, delivers exceptional signal reception performance and unparalleled stability for your satellite communication systems.

Whether it's broadband access in remote areas, maritime/airborne mobile communications, or encrypted data transmission for government agencies, this LNB is designed to handle the most demanding applications.

Core Technical Specifications

Parameter	Specification	Technical Advantage
Receive Frequency Range	19.7 - 20.2 GHz	Covers mainstream Ka-band downlink frequencies, compatible with most global HTS satellites
Local Oscillator Frequency	21.15GHz (Customizable)	Precisely matched to satellite frequency plans
Output Frequency	950 - 1450 MHz (L-band)	Standard interface, compatible with major satellite modems
LO Stability	PLL, ±10 kHz (with external 10MHz reference)	Ultra-low phase noise, meets DVB-S2X high-order modulation requirements
Noise Figure	As low as 1.2 dB (typical)	Exceptional weak signal capture capability, enhances link margin
Input Interface	WR-42 Waveguide Flange	Professional interface, minimal insertion loss, ideal for high-frequency signal transmission
Output Interface	N-type Female (or SMA optional)	Rugged and durable, suitable for harsh outdoor environments
Operating Temperature	-30°C ~ +60°C	All-weather reliable operation, adapts to extreme climates
Protection Rating	IP67 Dust/Water Resistant	Sealed housing design, impervious to wind and rain

Detailed Technical Specifications

Parameter	Specification
Input Frequency Range	19.7GHz ~ 20.2GHz
Output Frequency Range	950MHz ~ 1450MHz
LO frequency	21.15GHz
Noise Figure	1.2dB (Typ.)/ 1.8dB (Max.)
LO Initial Accuracy	0.5MHz
LO Temperature Drift (-30~+60℃)	0.75MHz
LO phase noise @ 1 KHz	-60dBc/Hz
LO phase noise @ 10 KHz	-80dBc/Hz
LO phase noise @ 100 KHz	-90dBc/Hz
Conversion Gain	55dB~65dB/ 60dB (Typ.)
Gain Flatness	2.5dB (Max.)
Gain Variation	0.5dB/26 MHz
O/P 1dB Compression Point (P1 dB)	3.0dBm (Min.)
Image-Rejection	-40dBc (Min.)
Crosstalk Isolation	20dB (Min.) 22dB (Typ.)
O/P VSWR	2.5:1
Control Signals Ca L	10.0V~14.0V
Control Signals Cb R	16.0V~20.0V
DC-Power	10~20V/150Vdc*mA (Max.)
Output Impedance	75Ω (F-Type)
Working Temperature	-30℃~+60℃

Frequently Asked Questions

What is an LNB?

An LNB (Low Noise Block, also called LNC - Low Noise Converter) is used for communications satellite reception. The LNB is typically mounted on the satellite dish to collect and amplify the satellite signal, then downconvert it to a more manageable IF frequency that can be carried over standard coaxial cabling to the receiver. LNBs are categorized into C-Band, Ku-Band, and Ka-Band based on their operating frequencies.

What is a feedhorn?

The feedhorn is a directional component of the LNB that captures signals reflected from the dish while shielding against extraneous radiation. These collected signals are then passed to the LNB electronics. Feedhorns come in three types: Orthogonal feed, offset feed, and elliptical feed.

What is a Monoblock LNB?

This design incorporates two independent LNBs in a single housing, enabling reception from two different satellites at slightly different orbital positions using a single dish. Switching between satellites is achieved via DiSEqC signals. Monoblock LNBs are available primarily for satellites with fixed 2°/3°/4.3° or 6° spacing, covering Ku band with single, twin, and quad output options.

What is a one cable solution LNB?

This LNB type can connect multiple set-top boxes (STBs) using a single RG6 cable, providing an energy-efficient, multi-user receiving solution. Also known as a stack LNB.

What does Unicable mean?

Unicable is a satellite television distribution method supporting multiple receivers (up to 32 per EN 50494 & EN 50607 standards).

Unicable 1: SCR LNB with static working mode only
Unicable 2: Supports both static and dynamic working modes, with designs allowing Universal+Unicable inputs (e.g., 1 Universal + 1 Unicable output or 1 Universal + 3 Unicable outputs)

Tags：

Ka-Band Single LNB 19.7-20.2GHz Low Noise Block with Linear & Circular Polarization and 1.2dB Noise Figure

19.7-20.2GHz Ka-Band Single LNB

Linear & Circular Polarization Low Noise Block

1.2dB Noise Figure Satellite LNB

19.7-20.2GHz Ka-Band Single LNB

Linear & Circular Polarization Low Noise Block

1.2dB Noise Figure Satellite LNB

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