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RF Front End (LNA + PA)

Image Part Number Description / PDF Quantity Rfq
SKY65364-21

SKY65364-21

Skyworks Solutions, Inc.

SMART ENERGY SIP

13475
SKY65378-11

SKY65378-11

Skyworks Solutions, Inc.

900 MHZ, RX FEM WITH DUAL ANTENN

39033000
SKY65336-11

SKY65336-11

Skyworks Solutions, Inc.

IC FEM TRANS/RCV 2.4GHZ 28-MCM

6260
RFX1010

RFX1010

Skyworks Solutions, Inc.

RF IC FRONT END 780-960MHZ 16QFN

41981
SE2432L-R

SE2432L-R

Skyworks Solutions, Inc.

IC FRONT END 2.4GHZ ZIGBEE 24QFN

48050
SKY66423-11

SKY66423-11

Skyworks Solutions, Inc.

860 TO 930MHZ HIGH GAIN RF FEM

1511540000
SE5008L-R

SE5008L-R

Skyworks Solutions, Inc.

802.11AN SW/LNA IN 3X3X0.9 QFN

19853000
RFX2411

RFX2411

Skyworks Solutions, Inc.

IC FRONT END 2.4GHZ ZIGBEE 20QFN

876137500
SKY68001-31

SKY68001-31

Skyworks Solutions, Inc.

CAT0 LTE UNIVERSAL IOT FEM

206613500
SKY85325-11

SKY85325-11

Skyworks Solutions, Inc.

2.4GHZ 256QAM PA+SW+LNA FEM IN 2

3000
SKY66420-11

SKY66420-11

Skyworks Solutions, Inc.

860 TO 930MHZ RF FEM

1600
SE2595L-R

SE2595L-R

Skyworks Solutions, Inc.

IC WLAN FRONT END MOD 32QFN

3000
SKY65367-11

SKY65367-11

Skyworks Solutions, Inc.

169-170MHZ 4X4 FEM

2591
SKY65943-11

SKY65943-11

Skyworks Solutions, Inc.

GPS LNA MODULE

27087
SKY66113-11

SKY66113-11

Skyworks Solutions, Inc.

CONNECTED HOME BLE+ZIGBEE RX FEM

2185
SKY65344-21

SKY65344-21

Skyworks Solutions, Inc.

IC FRONT END 2.4-2.5GHZ 20-MCM

49243000
SKY85717-21

SKY85717-21

Skyworks Solutions, Inc.

IC FRONT END MODULE 16QFN

3000
RFX2402E

RFX2402E

Skyworks Solutions, Inc.

IC FRONT END 2.4GHZ WLAN 16QFN

5955
SKY85310-11

SKY85310-11

Skyworks Solutions, Inc.

2GHZ FEM IN 3X3MM PACKAGE

2999
SKY66122-11

SKY66122-11

Skyworks Solutions, Inc.

OFDM, 863 TO 928 MHZ, WI-SUN, FE

300024000

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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