
HHM2919A2 RF/IF and RFID |
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Allicdata Part #: | 445-15664-2-ND |
Manufacturer Part#: |
HHM2919A2 |
Price: | $ 0.07 |
Product Category: | RF/IF and RFID |
Manufacturer: | TDK Corporation |
Short Description: | DIRECTIONAL COUPLER 2.4GHZ |
More Detail: | RF Directional Coupler General Purpose 2.4GHz ~ 2.... |
DataSheet: | ![]() |
Quantity: | 1000 |
10000 +: | $ 0.06073 |
30000 +: | $ 0.05906 |
50000 +: | $ 0.05715 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Coupler Type: | Standard |
Frequency: | 2.4GHz ~ 2.5GHz |
Coupling Factor: | 19.2dB |
Applications: | General Purpose |
Insertion Loss: | 0.28dB |
Power - Max: | -- |
Isolation: | 32dB |
Return Loss: | 18dB |
Package / Case: | 0402 (1005 Metric) |
Supplier Device Package: | -- |
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Introduction
HHM2919A2 is a directional coupler typically used in RF (Radio Frequency) applications to sample an input signal in order to perform measurements or enable signal control. Directional couplers are active components that measure and also control the amount of RF signal that is transferred between two points, making them ideal for use in a variety of applications that involve RF (Radio Frequency). Couplers are constructed from a variety of materials and can be used for a number of applications, including power measurement, antenna extensions, and signal control.
Application Fields
HHMH2919A2 couplers are commonly used in various applications for radio frequency (RF) signals, including radio relay networks, broadcast systems, and cellular systems. Because of their low cost and wide range of applications, the HHM2919A2 couplers enjoy widespread use.
- Communication systems — HHMH2919A2 couplers can be used in communication systems to measure power, monitoring, and controlling of power flow for a variety of applications.
- Broadcast systems — HHMH2919A2 couplers can be used to measure and control the power of a signal in broadcast systems such as VHF/UHF transmitters, satellite receivers, and portable radio systems.
- Cellular systems — HHMH2919A2 couplers can be used in cellular systems for testing and measuring power that is transmitted or received by mobile transceivers.
The HHM2919A2 couplers are also used in medical imaging, radar systems, RF measurement, and many others.
Working Principle
Directional signal coupling is based on the principle of impedance transformation. The purpose of a coupler is to transfer a certain amount of signal from one port (input) to another (output) with a very low insertion loss across the frequency range of operation. A coupler is typically a passive component, meaning it does not amplify or attenuate the signal.
HHM2919A2 couplers use two elements, a T-shaped component and a directional element. The T-shaped element acts as the primary and secondary windings, and the directional element provides the directional coupling through its radiation pattern symmetry. The T-shaped element and the directional element are connected to form the coupler in such a way that the primary winding is connected to the output port and the secondary winding is connected to the input port.
The coupler works by transmitting a portion of the signal that travels from the input port to the output port, and the remaining signal that is not transmitted to the output port is referred to as the leakage. The leakage is determined by the impedance transformation of the signal traveling between the two ports. The directional coupler can be used to measure both forward and reverse RF power, and also attenuates the signal in one direction while amplifying it in the other direction.
Conclusion
The HHM2919A2 coupler is a highly versatile device typically used in radio frequency applications to measure and control signal power. It uses two elements, a T-shaped component and a directional element, to transfer a signal from an input port to an output port with very low insertion loss, enabling it to be used for a variety of applications.
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