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RF Front End (LNA + PA)

Image Part Number Description / PDF Quantity Rfq
SKY85303-21

SKY85303-21

Skyworks Solutions, Inc.

IC WLAN RF FEM BT 16QFN

3000
SKY85310-21

SKY85310-21

Skyworks Solutions, Inc.

2.4GHZ 256QAM PA+SW+LNA FEM

2985
SKY66112-11

SKY66112-11

Skyworks Solutions, Inc.

CONNECTED HOME/WEARABLEBLE+ZIGBE

0
SKY65383-11

SKY65383-11

Skyworks Solutions, Inc.

HIGH POWER 2.4-GHZ FEM

0
SKY66100-11

SKY66100-11

Skyworks Solutions, Inc.

169-170MHZ 4X4 FEM

0
SKY66110-11

SKY66110-11

Skyworks Solutions, Inc.

BLE FEM COMMON T&R PA/RX BYPASS

0
SKY65535-11

SKY65535-11

Skyworks Solutions, Inc.

MOD FEM 5G PA+LNA+SP2T 16QFN

185942000
SKY65352-11

SKY65352-11

Skyworks Solutions, Inc.

IC FRONT END 2.4-2.5GHZ 20-MCM

0
SE5502L-R

SE5502L-R

Skyworks Solutions, Inc.

IC FRONTEND MOD 802.11N DL 24QFN

0
RFX2411N

RFX2411N

Skyworks Solutions, Inc.

IC FRONT END BLE/ZIGBEE 20QFN

7859
SKY66405-11

SKY66405-11

Skyworks Solutions, Inc.

IC MOD FRONT END 2.4GHZ 12-MCM

135000
SE2611T-R

SE2611T-R

Skyworks Solutions, Inc.

IC FRONT END MOD 2.4GHZ 20QFN

3000
SKY66115-11

SKY66115-11

Skyworks Solutions, Inc.

472-510 MHZ SMART METERING FEM

5419
SKY66121-11

SKY66121-11

Skyworks Solutions, Inc.

169MHZ TX FEM - ADVANCED SMART M

106
SE2438T-R

SE2438T-R

Skyworks Solutions, Inc.

IC FRONT END MOD RF 2.4GHZ 20QFN

2891
SKY66109-11

SKY66109-11

Skyworks Solutions, Inc.

20 DBM 802.15.4 FEM WITH PA, LNA

1797
SKY66114-11

SKY66114-11

Skyworks Solutions, Inc.

CONNECTED HOME/WEARABLE BLE+ZIGB

10000
SKY65933-11

SKY65933-11

Skyworks Solutions, Inc.

GPS LNA MODULE

0
SKY85309-11

SKY85309-11

Skyworks Solutions, Inc.

2GHZ 802.11AC 22DBM 5X3MM FEM

3000
SKY66422-11

SKY66422-11

Skyworks Solutions, Inc.

860 TO 930MHZ RF FRONT END MODUL

295

RF Front End (LNA + PA)

1. Overview

An RF Front End (LNA + PA) integrates a Low Noise Amplifier (LNA) and Power Amplifier (PA) to manage signal transmission and reception in radio frequency systems. The LNA amplifies weak incoming signals with minimal noise addition, while the PA boosts outgoing signals to achieve desired transmission power. These components are critical in wireless communication systems, RFID readers, and IoT devices, enabling reliable data exchange and long-range connectivity.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Low-Frequency (LF) RFID Front EndOperates at 30 kHz 300 kHz, high sensitivity for short-range detectionAccess control systems, animal tracking
High-Frequency (HF) RFID Front End13.56 MHz operation, supports mid-range communicationSmart posters, ticketing systems
Ultra-High Frequency (UHF) Front End860 960 MHz, extended read range up to 15 metersSupply chain logistics, inventory management
Integrated LNA+PA ModulesSingle-package solution for transceiver systems5G base stations, automotive radar

3. Structure and Components

A typical RF Front End combines:

  • LNA Section: GaAs or SiGe transistors with input matching networks
  • PA Section: Gallium Nitride (GaN) or Laterally Diffused MOSFET (LDMOS) devices
  • Bandpass filters for frequency selectivity
  • Impedance matching circuits (50 standard)
  • Thermal management structures (heat sinks or thermal vias)

4. Key Technical Specifications

ParameterDescriptionTypical Values
Frequency RangeOperating bandwidth of the front endLF: 125 kHz, HF: 13.56 MHz, UHF: 900 MHz
Gain (LNA)Signal amplification level15 30 dB
Noise Figure (LNA)Measure of signal-to-noise degradation0.5 3 dB
Output Power (PA)Transmitted signal strength20 40 dBm
Power Added Efficiency (PAE)Energy conversion efficiency40 70%
Input/Output ImpedanceMatching network characteristic50 standard

5. Application Fields

Main industries:

  • Telecommunications (5G infrastructure, satellite communication)
  • RFID systems (warehouse tracking, contactless payments)
  • Industrial IoT (sensor networks, asset monitoring)
  • Automotive (V2X communication, tire pressure sensors)

Typical devices: RFID readers, smart meters, drones, medical telemetry systems

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Analog DevicesHMC1060LP5EDC-6 GHz LNA+PA module for test equipment
QorvoRFFM6902Sub-1 GHz front end for IoT devices
Nordic SemiconductornRF215402.4 GHz range extender for Bluetooth systems
STMicroelectronicsST25R3911BHF RFID reader with integrated LNA

7. Selection Recommendations

Key considerations:

  • Match frequency range to system requirements
  • Balance gain/noise figure for receiver sensitivity
  • Verify PA output power against regulatory limits
  • Evaluate package size for PCB integration
  • Assess temperature stability (-40 C to +85 C typical)
  • Compare power consumption for battery-operated devices

Industry Trend Analysis

Future directions include:

  • Advanced CMOS integration reducing discrete component needs
  • Adoption of GaN-on-SiC for higher power density
  • AI-driven dynamic impedance matching
  • Miniaturization for wearable and implantable devices
  • Multi-band front ends supporting 5G and Wi-Fi 6E coexistence

Market growth driven by IoT expansion and RFID adoption in smart cities, projected at 12% CAGR (2023-2030).

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