RF Switches

Image	Part Number	Description / PDF	Quantity	Rfq
	NL111024EG6275 Broadcom	RA12	0
	NL88659HG10300B0 Broadcom	FCBGA+HS 35X3	0
	NL9512SVH-300 Broadcom	NL9000_18M_300MHZ_1.0V	0
	NL5512DH-266 Broadcom	NL5000CJTHOR_18M 266MHZ	0
	NLA122048H12600B1I Broadcom	FCBGA+HS 35X35 1152	0
	NL7512DVH-350H Broadcom	FCBGA+HS 25X25 529	0
	NLA121024H10300B1 Broadcom	FCBGA+HS 35X35 1152	0
	NL10512EFH533HC03 Broadcom	RA03	0
	NL88659HG10500B1I Broadcom	FCBGA+HS 35X35 1152	0
	NLNSE70064A-66BGFC Broadcom	272 BGA+HS 27X27MM	0
	NL71024DSH-266 Broadcom	NL7000MOJO_36M 266MHZ 1.2V	0
	NL101024EFH533HC03 Broadcom	RA03	0
	NL5128GFS-200 Broadcom	529 BGA+HS 27X27MM	0
	NLA111024EGUC6-400 Broadcom	RA12	0
	NL101024HGH300CA3 Broadcom	RA03 1152 FCB	0
	NL6512DVH-200 Broadcom	NL6000MOAC_HSTL_18M 200MHZ 1.0V	0
	NLA122048H10300B1 Broadcom	FCBGA+HS 35X35 1152	0
	NL56647EGULA6C3400 Broadcom	FCBGA+HS 31X31 896	0
	NL7128RFGLRB02450A Broadcom	IC NL7000TCAM4-K3 5M 450MHZ 1V	0
	NL56615DFHV Broadcom	NL7000KOJAK_18M_500MHZ 1.0V HS	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

Type	Functional Characteristics	Application Examples
Electromechanical Switches	High isolation (>85dB), low insertion loss (<0.5dB), limited lifespan (10⁷ cycles)	Lab test equipment, fixed wireless systems
Solid-State Switches	Fast switching speed (<20ns), 50 impedance, moderate power handling (30dBm)	5G base stations, software-defined radios
MEMS Switches	Ultra-low insertion loss (0.2dB), high linearity, vacuum encapsulation	Aerospace phased arrays, medical imaging
RFID Antenna Switches	Impedance matching networks, HF/UHF band optimization	Smart 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

Parameter	Typical Values	Importance
Frequency Range	DC-18GHz (standard)	Determines application bandwidth
Insertion Loss	0.3-2.0 dB	Affects signal strength
Isolation	40-100 dB	Prevents signal interference
Power Handling	10W-100W	Limits maximum operational power
Switching Speed	5ms-50ns	Impacts 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

Manufacturer	Representative Product	Key Features
Keysight Technologies	U1880A	67GHz bandwidth, 500ns switching speed
Analog Devices	ADG904	4-channel, 3GHz, CMOS process
STMicroelectronics	AFBR-5010	MEMS-based, 0.15dB insertion loss
Infineon	BTS724G	Automotive-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