RF Switches

Image Part Number Description / PDF Quantity Rfq
HMC641LC4

HMC641LC4

Analog Devices, Inc.

IC RF SWITCH SP4T 20GHZ 24SMT

0

HMC550ETR

HMC550ETR

Analog Devices, Inc.

IC RF SWITCH SPST 6GHZ SOT26

0

HMC347G8TR

HMC347G8TR

Analog Devices, Inc.

IC RF SWITCH SPDT 8GHZ 8SOIC

0

HMC547LC3TR-R5

HMC547LC3TR-R5

Analog Devices, Inc.

IC RF SWITCH SPDT 28GHZ 16CSMT

0

HMC446

HMC446

Analog Devices, Inc.

IC RF SWITCH SPDT 894MHZ SOT26

0

HMC245QS16

HMC245QS16

Analog Devices, Inc.

IC RF SWITCH SP3T 3.5GHZ 16QSOP

0

HMC347G8

HMC347G8

Analog Devices, Inc.

IC RF SWITCH SPDT 8GHZ 8SMD

0

HMC446ETR

HMC446ETR

Analog Devices, Inc.

IC RF SWITCH SPDT 894MHZ SOT26

0

HMC221BTR

HMC221BTR

Analog Devices, Inc.

IC RF SWITCH SPDT SOT23-6

0

HMC253LC4TR

HMC253LC4TR

Analog Devices, Inc.

IC RF SWITCH SP8T 3.5GHZ 24CSMT

0

HMC344LP3TR

HMC344LP3TR

Analog Devices, Inc.

IC RF SWITCH SP4T 8GHZ 16QFN

0

HMC241QS16E

HMC241QS16E

Analog Devices, Inc.

IC RF SWITCH SP4T 3.5GHZ 16QSOP

0

HMC276LP4ETR

HMC276LP4ETR

Analog Devices, Inc.

IC RF SWITCH 3GHZ 24QFN

0

HMC595ETR

HMC595ETR

Analog Devices, Inc.

IC RF SWITCH SPDT 3GHZ SOT26

0

HMC348LP3E

HMC348LP3E

Analog Devices, Inc.

IC RF SWITCH SPDT 2.5GHZ 16SMT

0

HMC641

HMC641

Analog Devices, Inc.

IC RF SWITCH SP4T 18GHZ DIE

0

HMC322LP4ETR

HMC322LP4ETR

Analog Devices, Inc.

IC RF SWITCH SP8T 8GHZ 24QFN

0

HMC241LP3ETR

HMC241LP3ETR

Analog Devices, Inc.

IC RF SWITCH SP4T 4GHZ 16SMT

0

HMC347LP3

HMC347LP3

Analog Devices, Inc.

IC RF SWITCH SPDT 14GHZ 16QFN

0

HMC986-SX

HMC986-SX

Analog Devices, Inc.

IC RF SWITCH SPDT 50GZ DIE 1=2PC

0

RF Switches

1. Overview

RF (Radio Frequency) and IF (Intermediate Frequency) switches are critical components in wireless communication systems, enabling signal routing between transmitter, receiver, and antenna. RFID (Radio Frequency Identification) RF switches specifically manage signal paths in RFID readers and tags. These electromechanical or solid-state devices operate in frequency ranges from kHz to GHz, playing vital roles in 5G, IoT, and industrial automation.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Electromechanical SwitchesHigh isolation (>85dB), low insertion loss (<0.5dB), limited lifespan (107 cycles)Lab test equipment, fixed wireless systems
Solid-State SwitchesFast switching speed (<20ns), 50 impedance, moderate power handling (30dBm)5G base stations, software-defined radios
MEMS SwitchesUltra-low insertion loss (0.2dB), high linearity, vacuum encapsulationAerospace phased arrays, medical imaging
RFID Antenna SwitchesImpedance matching networks, HF/UHF band optimizationSmart logistics, access control systems

3. Structure and Components

Typical RF switches consist of: - Housing: Aluminum alloy or ceramic packages - Contact system: Gold-plated beryllium copper contacts - Actuator: Electromagnetic coil or MEMS membrane - RF ports: SMA/N-type connectors or surface-mount pads - Dielectric materials: PTFE or ceramic insulators

4. Key Technical Specifications

ParameterTypical ValuesImportance
Frequency RangeDC-18GHz (standard)Determines application bandwidth
Insertion Loss0.3-2.0 dBAffects signal strength
Isolation40-100 dBPrevents signal interference
Power Handling10W-100WLimits maximum operational power
Switching Speed5ms-50nsImpacts system response time

5. Application Fields

  • Telecommunications: Base station antenna switching
  • Industrial: IoT gateway signal routing
  • Medical: MRI machine RF path control
  • Automotive: Tire pressure monitoring systems
  • Retail: Smart shelf inventory management

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Keysight TechnologiesU1880A67GHz bandwidth, 500ns switching speed
Analog DevicesADG9044-channel, 3GHz, CMOS process
STMicroelectronicsAFBR-5010MEMS-based, 0.15dB insertion loss
InfineonBTS724GAutomotive-grade, 40V load protection

7. Selection Recommendations

Key considerations: - Frequency matching with system requirements - Power handling capacity with 20% safety margin - Environmental factors (temperature, vibration) - Lifecycle requirements (electromechanical vs. solid-state) - Cost vs. performance trade-offs

8. Industry Trends

Future developments include: - Millimeter-wave switches for 5G/6G (28-100GHz) - Integrated passive devices (IPDs) with embedded switches - Energy-harvesting RFID switch solutions - AI-driven smart switch arrays for dynamic spectrum sharing - Nano-MEMS technology achieving sub-10ns switching

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