WE connect dots!
Boosting IoT connectivity through RF excellence
RF components play a central role in wireless devices, enabling reliable connectivity in applications such as communication, smart homes and industrial monitoring.
Their product portfolio includes all necessary components for IoT devices, such as RF inductors & capacitors, chip & rod antennas, chip filters & baluns, coaxial connectors & radio modules. The commented RF components are required for the assembly of any kind of wireless interface.
WE-MCA
Highest size to perform ratio
- SMD multilayer chip antenna
- Extremely low profile
- Omni-directional radiation
- Operating temperature: –40 °C to
+85 °C - Very high performance to size ratio
- Applications: GSM, WLAN, Bluetooth, Home RF, IoT
LNA (Low-Noise-Amplifier)
Inductor e.g. WE-TCI
Highest precision in the smallest package
- SMD thin film inductors
- Very tight inductance tolerances: up to 1%
- Very low profile
- Sizes: 0201/0402
IF (Intermediate Frequency) Filter
Low-Pass Filter: WE-LPF
Low insertion loss
Band-Pass Filter: WE-BPF
High stopband rejection
- Power capacity up to 3 W
- Guaranteed filter characteristics over a wide temperature range
- Applications: GSM, WLAN, Bluetooth, wireless communication systems
Balun
WE-BAL
Precise differential output
- Low loss SMD balun
- Balanced impedance of 50 to 200 Ω
- Operating temperature: –40 °C to
+85 °C - Power capacity up to 2 W
- Applications: Home, RF, WLAN, Bluetooth, ZigBee
Matching network examples
Inductor e.g. WE-MK
Highest robustness
Capacitor WCAP-CSRF
Optimized inner structure for RF applications
- SMD RF multilayer ceramic inductors
- Very high SRF
- Highly reliablity chip inductors
- Sizes: 0201/0402/0603
PA (Power Amplifier)
Inductor e.g. WE-KI / WE-KI HC
Best quality-to-price ratio
e.g. WE-CAIR
Best performance
- SMD RF wire wound ceramic inductors
- High Q-factor
- Large currents supported
- Inductance tolerances: 2% and 5%
- Sizes: 0402/ 0603/ 0805/ 1008
- SMD RF air core inductors
- Very high Q-factor
- Very large currents supported
- Inductance tolerances: 2% and 5%
- Sizes: 1322/ 1340/ 3136/ 3168/ 4248/ 5910
Antennas
Chip antennas
Chip antennas offer a very good performance in a very compact design. They do not require any expertise from designers.
Advantage
- Small
- Protected
- Integrated in the application
- Low cost
Disadvantage
- Antenna matching required to improve
the bandwith
Rod antennas
If space is not an issue, rod antennas offer the best performance and do not require any know-how.
Advantage
- Low losse
- Good radiation
Disadvantage
- Price
- Size
PCB antennas
For RF experts, this can be an option for highly miniaturized design. However, the design of this kind of antenna requires a lot of experience.
Advantage
- Small
- Protected
- Integrated in the application
Disadvantage
- Mostly narrow bandwidth
- Technically very complex
- Know-how required
Matching network
Antenna matching design kit
Antennas are influenced by factors such as metals, batteries/accumulators, casings and human bodies. In addition, the position of the chip antenna on the PCB and the PCB size/geometry also affects the near fields.
These are the reasons why the frequency range at which the chip antenna can transmit and receive may be out of tune. With the help of RF inductors and RF capacitors, the chip antenna can be matched to the required frequency range. Try it out with the Antenna Matching Design Kit.
Regarding the position, more information can be found in the design-in recommendations.
Find WE products here
Filters / baluns
WE-LPF multilayer chip low-pass filter
- Operating temperature: –40 °C to +85 °C
- Power capacity up to 3 W
- Low insertion loss and high attenuation in the stop-band
WE-BPF mulitlayer chip band-pass filter
- Multilayer chip band-pass filter with low insertion loss and high attenuation
- SMT component in the sizes 0805/1008
- Guaranteed filter characteristics over a wide temperature range
WE-BAL multilayer chip balun
- Low loss SMT balun with balanced impedance of 50 to 200 Ω
- Operating temperature: –40 °C to +85 °C
- Power Capacity: 2 W max
Capacitors / crystals / coax
WCAP-CSRF high frequency MLCC
- Ceramic: NP0 (Class I)
- Capacitance range: 0.2 pF ‒ 33 pF
- Temperature Coefficient: ±30 ppm/°C
- Voltage range (UR): 25 ‒ 50 V(DC)
- Low capacitance values with tight tolerances
- Very stable capacitance over
- High Q-Factor and Low ESR at high frequencies
WE-XTAL crystal
- SMT and THT models
- Hermetically sealed
- Frequencies between 1.8432 MHz and 50
- Tolerances down to ±10 ppm available
Coax connectors
- SMT and THT models
- SMA, SMB, SMP, UMRF, MCX and MMCX
- Different series with plenty of configurations
RF inductors selection guide
WE-KI wire wound ceramic inductor
Best price-performance
- Wire wound inductor with core
- Inductance values from 1nH up to 1800nH
- High Q factor
- Up to ± 2% inductance tolerance
WE-KI high current wire wound ceramic inductor
Improved characteristics of WE-KI
- Wire wound inductor with core
- Inductance values from 1nH up to 390nH
- Excellent Q factor
- High current up to 2.3 A
- ± 2% Inductance
WE-RFI wire wound ferrite inductor
Highest inductance value inductors
- Wire wound inductor with core
- High inductance values available from 0.47 µH up to 47 µH
WE-CAIR air core inductor
Best performance
- Wire wound inductor with air core
- Wire wound inductor with core
- Inductance values from 1.65nH up to 538nH
- Extremly high Q factor (Q>100)
- Very high current up to 4 A
WE-MK mulitlayer ceramic inductor
Very competitive price
- Inductance values from 1nH up to 470nH
- Extremly small size (up to 0201)
- Up to ±2% (or ±0.1nH) inductance tolerance
- Polarity marking available
WE-TIC thin film inductor
Lowest profile inductors
- Inductance values from 1nH up to 27nH
- Tight tolerance of 2 % (1% on request) or ± 0.1
- Very small size (up to 0201)
