| Image | Part Number | Description / PDF | Quantity | Rfq |
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Johanson Technology |
RF DIR COUPLER 860-960MHZ 0805 |
0 |
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Johanson Technology |
RF DIR COUPLER 860-960MHZ 0805 |
0 |
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Johanson Technology |
3 dB HYBRID COUPLER 1950MHZ |
0 |
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Johanson Technology |
RF DIR COUPLER 4.9-5.85GHZ 0805 |
2276 |
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Johanson Technology |
RF DIR COUPLER 2.4-2.5GHZ 0805 |
0 |
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Johanson Technology |
DIR COUPLER 17.65DB 2450MHZ |
0 |
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Johanson Technology |
3 dB HYBRID COUPLER 880MHZ |
0 |
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Johanson Technology |
MINI GPS, GNSS, BEIDOU, GALILEO |
0 |
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Johanson Technology |
RF DIR COUPLER 89MHZ 0603 |
0 |
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Johanson Technology |
RF HYBRID COUPLER SPLIT 2.45GHZ |
0 |
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Johanson Technology |
RF DIR COUPLER 880-915MHZ 0603 |
0 |
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Johanson Technology |
RF DIR COUPLER 880-915MHZ 0805 |
0 |
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Johanson Technology |
RF DIR COUPLR 1.71-1.785GHZ 0805 |
0 |
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Johanson Technology |
DIR COUPLER 20DB 1810MHZ |
0 |
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Johanson Technology |
RF DIR COUPLER 880-915MHZ 0603 |
0 |
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Johanson Technology |
RF DIR COUPLER 880-915MHZ 0603 |
0 |
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Johanson Technology |
PCN 3 DB HYBRID COUPLER LTCC |
0 |
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Johanson Technology |
RF DIR COUPLER 450MHZ 0603 |
0 |
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Directional couplers are passive devices that sample a portion of RF/IF signal power for monitoring or feedback purposes. They enable signal splitting, reflection measurement, and signal-to-noise ratio optimization. These components are critical in wireless communication systems, RFID infrastructure, and industrial control applications.
| Type | Functional Features | Application Examples |
|---|---|---|
| Microwave Ridge Waveguide | High power handling (100W+), broadband operation | 5G Base stations, Satellite communication |
| Coaxial Line | Compact design, 50/75 impedance options | RFID readers, Test equipment |
| Microstrip Planar | Low profile, Surface-mount compatible | WLAN routers, IoT modules |
| Hybrid Coupler | 3dB power split with phase matching | MIMO systems, Beamforming networks |
Typical construction includes: - Precision-machined metal housing (aluminum/copper alloys) - Dielectric substrates (PTFE or ceramic materials) - Coupling slots/apertures (0.1-2.0mm dimensions) - Input/Output ports with SMA/N-Type connectors - Isolation termination resistor (50 matched load) - EMI shielding gaskets
| Parameter | Typical Range | Importance |
|---|---|---|
| Coupling Factor | 3-40 dB | Determines sampled power level |
| Directivity | 15-40 dB | Measures forward/reverse signal separation |
| Insertion Loss | 0.1-2.0 dB | Impacts system power efficiency |
| VSWR | 1.1:1 - 1.5:1 | Affects impedance matching quality |
| Frequency Range | 30 MHz - 110 GHz | Defines operational bandwidth |
Key industries include: - Telecommunications (5G/4G BTS signal monitoring) - RFID systems (UHF/NFC reader sensitivity control) - Industrial IoT (Wireless sensor network optimization) - Medical equipment (MRI RF power management) - Automotive (V2X communication diagnostics)
| Manufacturer | Representative Product | Key Features |
|---|---|---|
| Analog Devices | ADL5523 | 40GHz broadband, 20dB coupling accuracy |
| Mini-Circuits | ZFDC-20-63-S+ | DC-20GHz, 3.5mm connectorized |
| TE Connectivity | RF-0424-01 | Automotive-grade RFID coupler |
| KRYTAR | 10104800 | 10-48GHz, 50dB dynamic range |
Key considerations: - Frequency bandwidth match (1.5x operating range) - Power handling (1.2x maximum system power) - Directivity requirements (>30dB for precise measurements) - Environmental factors (operating temperature -40 C to +85 C) - Connector type compatibility (SMA vs N-Type) - Cost vs performance tradeoff (planar vs waveguide)
Emerging developments: - Sub-6GHz massive MIMO integration - Advanced packaging for mmWave applications - AI-optimized coupling algorithms - Gallium Nitride (GaN) material adoption - Miniaturization for mobile device integration - Higher directivity (>50dB) research