RF Amplifiers

Image Part Number Description / PDF Quantity Rfq
NJG1159PHH-TE1

NJG1159PHH-TE1

New Japan Radio (NJR)

IC AMP GALIL 1.575/1.602GHZ MOD

13901

NJG1157PCD-TE1

NJG1157PCD-TE1

New Japan Radio (NJR)

IC AMP GPS 1.575GHZ 1.602GHZ MOD

0

NJG1105F-TE1

NJG1105F-TE1

New Japan Radio (NJR)

IC AMP CEL 1.8/1.9/2.1GHZ 6MTP

5981

NJG1307R-TE1

NJG1307R-TE1

New Japan Radio (NJR)

IC AMP CEL 800MHZ 1.5/1.9GHZ VSP

3871

NJG1170UX2-TE1

NJG1170UX2-TE1

New Japan Radio (NJR)

LOW NOISE AMPLIFIER WITH BYPASS

0

NJG1175KG1-TE3

NJG1175KG1-TE3

New Japan Radio (NJR)

5 GHZ LOW NOISE AMPLIFIER WITH B

0

NJG1173UX2-TE1

NJG1173UX2-TE1

New Japan Radio (NJR)

LOW NOISE AMPLIFIER WITH BYPASS

0

NJG1182UX2-TE1

NJG1182UX2-TE1

New Japan Radio (NJR)

LNA WITH BYPASS SWITCH 5GHZ BAND

5000

NJG1161PCD-TE1

NJG1161PCD-TE1

New Japan Radio (NJR)

1.5GHZ GPS AND GLONASS FEM

2970

NJG1169UX2-TE1

NJG1169UX2-TE1

New Japan Radio (NJR)

LOW NOISE AMPLIFIER WITH BYPASS

0

NJG1740MHH-TE1

NJG1740MHH-TE1

New Japan Radio (NJR)

WIND BAND LNA AUTO GAIN CONTROL

0

NJG1187KG1-TE3

NJG1187KG1-TE3

New Japan Radio (NJR)

GNSS HIGH GAIN LOW NOISE AMPLIFI

0

NJG1302V-TE1

NJG1302V-TE1

New Japan Radio (NJR)

IC AMP PHS 1.89-1.92GHZ 14SSOP

0

NJG1101F-TE1#

NJG1101F-TE1#

New Japan Radio (NJR)

IC AMP TDMA 850MHZ-2.5GHZ 6MTP

0

NJG1101F-TE1

NJG1101F-TE1

New Japan Radio (NJR)

IC AMP TDMA 850MHZ-2.5GHZ 6MTP

0

NJG1103F1-TE1#

NJG1103F1-TE1#

New Japan Radio (NJR)

IC AMP TDMA 1.4GHZ-1.52GHZ 6MTP

0

NJG1103F1-TE1

NJG1103F1-TE1

New Japan Radio (NJR)

IC AMP TDMA 1.4GHZ-1.52GHZ 6MTP

0

NJG1105F-TE1#

NJG1105F-TE1#

New Japan Radio (NJR)

IC AMP CEL 1.8/1.9/2.1GHZ 6MTP

0

NJG1307R-TE1#

NJG1307R-TE1#

New Japan Radio (NJR)

IC AMP CEL 800MHZ 1.5/1.9GHZ VSP

0

NJG1302V-TE1#

NJG1302V-TE1#

New Japan Radio (NJR)

IC AMP PHS 1.89-1.92GHZ 14SSOP

0

RF Amplifiers

1. Overview

RF/IF amplifiers and RFID amplifiers are critical components in wireless communication systems, designed to boost signal strength while maintaining signal integrity. RF amplifiers operate across radio frequency (RF) and intermediate frequency (IF) bands, enabling signal transmission/reception in devices like base stations, IoT modules, and medical equipment. RFID amplifiers specialize in enhancing signals for radio frequency identification systems, ensuring reliable data exchange between readers and tags. These components are essential for modern technologies such as 5G networks, smart logistics, and contactless payment systems.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Low Noise Amplifier (LNA)High sensitivity, minimal added noiseRF receivers, satellite communication
Power Amplifier (PA)High output power, efficiency optimizationCellular base stations, Wi-Fi routers
IF AmplifierFixed/dynamic gain control at IF bandsTelevision tuners, radar systems
Variable Gain Amplifier (VGA)Adjustable gain for signal conditioningSoftware-defined radios, test equipment
RFID Reader AmplifierImpedance matching for tag interrogationUHF RFID readers, NFC terminals

3. Structure and Components

Typical RF amplifiers consist of: - Dielectric substrate (e.g., FR4, Rogers material) with conductive traces - Transistor elements (GaAs FETs, SiGe BJTs, or GaN HEMTs) - Impedance matching networks (LC circuits or microstrip lines) - Thermal management (heat sinks or thermal vias) - Shielded enclosure for EMI protection Modern designs integrate bias tees, directional couplers, and protection diodes.

4. Key Technical Specifications

ParameterDescriptionImportance
Gain (dB)Signal amplification ratioDetermines signal reach and clarity
Noise Figure (dB)Additional noise introducedImpacts receiver sensitivity
Output Power (dBm)Maximum deliverable powerDictates transmission distance
Frequency Range (GHz)Operational bandwidthSystem compatibility factor
P1dB CompressionLinear-to-saturation thresholdEnsures signal fidelity
IP3 (dBm)Intermodulation distortion resistanceMulti-signal environment performance

5. Application Fields

  • Telecommunications: 5G NR base stations, microwave links
  • Healthcare: MRI machine RF coils, wireless endoscopy
  • Logistics: UHF RFID warehouse automation
  • Automotive: V2X communication modules, tire pressure sensors
  • Consumer Electronics: Bluetooth LE beacons, NFC payment terminals

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Texas InstrumentsLMX2500Integrated synthesizer with 15dBm output power
Analog DevicesADAR10004-channel mmWave beamformer for 24GHz RFID
STMicroelectronicsSTRF79XHighly integrated NFC/RFID transceiver
Nordic SemiconductornRF215402.4GHz front-end module with +20dB gain
ImpinjR4H001UHF Gen2 RFID reader IC with on-chip amplifier

7. Selection Guidelines

Key considerations include: - Frequency alignment with system requirements - Gain flatness across operational bandwidth - Thermal dissipation capabilities - Package type (QFN, BGA, or connectorized) - Environmental compliance (temperature, humidity) - Cost vs. performance trade-offs

8. Industry Trends

Emerging trends include: - Transition to GaN technology for higher power density - Silicon integration for mmWave applications - AI-driven dynamic impedance matching - Energy-efficient Class-J and Doherty architectures - Convergence with photonic ICs for 6G systems

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