RF Transmitters

Image Part Number Description / PDF Quantity Rfq
PCF7945ATJ/H1AC150

PCF7945ATJ/H1AC150

NXP Semiconductors

IC MCU RISC 36SOICJ

0

PCF7900VHN/C0L,112

PCF7900VHN/C0L,112

NXP Semiconductors

RF TX IC UHF 315/434MHZ 16VFQFN

0

MC33493DTBE

MC33493DTBE

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

PCF7900VHN/C0L/UJ

PCF7900VHN/C0L/UJ

NXP Semiconductors

FRACTIONAL-N-PLL BASED UHF TRANS

0

PCF7900VHN/C0L,118

PCF7900VHN/C0L,118

NXP Semiconductors

RF TX IC UHF 315/434MHZ 16VFQFN

0

PCF7900NHN/C0K,112

PCF7900NHN/C0K,112

NXP Semiconductors

RF TX IC UHF 315/434MHZ 16VFQFN

0

MPXY8600DK6T1

MPXY8600DK6T1

NXP Semiconductors

RF TX IC FSK 315/434MHZ 32QFN

0

PCF7900NHN/C0K,118

PCF7900NHN/C0K,118

NXP Semiconductors

RF TX IC UHF 315/434MHZ 16VFQFN

0

MC33493DTBER2

MC33493DTBER2

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

MC33493DTBR2

MC33493DTBR2

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

MC33493DTB

MC33493DTB

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

MC33493ADTBE

MC33493ADTBE

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

MC33493ADTBER2

MC33493ADTBER2

NXP Semiconductors

RF TX IC FSK 315-434MHZ 14TSSOP

0

PCF7961ETT/M1AE160

PCF7961ETT/M1AE160

NXP Semiconductors

RF XMITTER ASK/FSK 315/434MHZ

0

PCF7921ATT/3601/2A

PCF7921ATT/3601/2A

NXP Semiconductors

IC RF REMOTE WIRELESS 20-TSSOP

0

PCF7961ATTM1AE0700

PCF7961ATTM1AE0700

NXP Semiconductors

RF XMITTER ASK/FSK 315/434MHZ

0

PCF7961ATT/E,518

PCF7961ATT/E,518

NXP Semiconductors

RF XMITTER ASK/FSK 315/434MHZ

0

PCF7961MTTC1AE1300

PCF7961MTTC1AE1300

NXP Semiconductors

RF XMITTER ASK/FSK 315/434MHZ

0

PCF7953ATJ/H1AC150

PCF7953ATJ/H1AC150

NXP Semiconductors

IC KEYLESS ENTRY/GO SOJ36

0

PCF7926ATT/C1AC07J

PCF7926ATT/C1AC07J

NXP Semiconductors

IC REMOTE KEYLESS ENTRY 20TSSOP

0

RF Transmitters

1. Overview

RF (Radio Frequency) transmitters are electronic devices that generate and transmit high-frequency electromagnetic waves for wireless communication. IF (Intermediate Frequency) components process signals at intermediate stages in transceivers. RFID (Radio Frequency Identification) RF transmitters specifically enable contactless data exchange between tags and readers. These technologies form the backbone of modern wireless systems, supporting applications from mobile communications to IoT networks.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
ISM Band TransmittersUnlicensed operation at 2.4 GHz/900 MHzWi-Fi routers, Bluetooth devices
Cellular Transmitters5G/LTE protocol support with power controlSmartphones, base stations
UHF RFID Readers860-960 MHz frequency agilityWarehouse inventory systems
HF RFID Modules13.56 MHz contactless payment supportAccess control terminals

3. Structure and Components

Typical RF transmitter architecture includes: Power Amplifier (PA) for signal boosting, Voltage-Controlled Oscillator (VCO) for frequency generation, modulator for data encoding, impedance matching networks, and antenna interfaces. Advanced systems integrate DSP cores for digital modulation (QAM, OFDM) and temperature-compensated crystal oscillators (TCXO) for stability. RFID variants add protocol-specific encoding circuits and impedance-tuned front-ends.

4. Key Technical Specifications

ParameterSignificance
Frequency Range: 300 MHz - 6 GHzDetermines application compliance (e.g., FCC Part 15.247)
Output Power: 0.1 - 30 dBmAffects transmission distance and regulatory class
Modulation Accuracy: EVM < 5%Ensures data integrity in dense environments
Current Consumption: 5-100 mABattery life consideration for IoT devices

5. Application Fields

  • Telecommunications: 5G small cells, satellite modems
  • Logistics: UHF RFID for supply chain tracking
  • Healthcare: Medical implant telemetry systems
  • Retail: NFC payment terminals (13.56 MHz HF RFID)

Case Study: Amazon's warehouse robots use 868 MHz RFID readers for real-time inventory with 5 cm accuracy.

6. Leading Manufacturers and Products

VendorRepresentative Product
TI (Texas Instruments)CC1352P7 multi-band wireless MCU
Nordic SemiconductornRF52840 Bluetooth 5.3 SoC
ImpinjR420 UHF Gen2 RFID reader
STMicroelectronicsCR95HF NFC/RFID transceiver

7. Selection Guidelines

  • Determine regulatory requirements (FCC/ETSI compliance)
  • Match frequency to use case (e.g., 900 MHz for liquid penetration)
  • Evaluate environmental factors (temperature, interference)
  • Assess protocol compatibility (LoRaWAN, BLE 5.4)
  • Optimize power vs. range trade-offs

8. Industry Trends

Key developments include: - 5G integration with sub-6 GHz RF front-ends - RFID moving to microwave frequencies (2.45 GHz active tags) - AI-enhanced spectrum sensing for dynamic frequency selection - Miniaturization via SiP (System-in-Package) technology - Energy harvesting transmitters for battery-free IoT

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