LDC-1/26.5-90S 1-26.5Ghz 90 degree Stripline hybrid coupler

LDC-1/26.5-90S is a 90 degree hybrid coupler with an isolation specification of 15 dB. Here is an introduction to it:

Basic Definition

A 90-degree hybrid coupler, also called an orthogonal hybrid coupler, is a specialized four-port directional coupler typically designed for 3 dB coupling, meaning it equally splits an input signal into two output signals with a 90-degree phase difference between them. It can also combine two input signals while maintaining high isolation between the input ports.

Performance Indicators

• Isolation: Its isolation is 15 dB. Isolation reflects the ability to suppress signal crosstalk between specific ports (usually between input and isolated ports), and a higher value indicates weaker crosstalk.

• Phase Difference: It offers a stable 90-degree phase shift between the two output ports, which is key for applications that need precise phase control.

• Bandwidth: The model number suggests it might work within a frequency range that relates to "26.5", potentially reaching up to 26.5 GHz, but the specific bandwidth needs to be referred to its technical datasheet for accurate limits.

Function & Application

It's applicable to RF and microwave circuits, playing roles in signal separation, combination, power distribution, or combination, and is often used in scenarios such as phased array antennas, balanced amplifiers, and QPSK transmitters.

Structural Characteristics

Typically, 90-degree hybrid couplers can be constructed using parallel transmission lines or microstrip lines to make energy couple from one line to another, and might be equipped with SMA, 2.92 mm, etc., according to the frequency, power, and other usage requirements.