Avantel's directional couplers cover the
frequency range of HF through 10 GHz with coupling coefficient
varying from 10 dB to 40 dB. Using round rod construction
technique, directional couplers handling power levels up
to 1 kW are available in the frequency range of 2 MHz to
1 GHz. Our directional couplers are widely used in precision
microwave systems, instrumentation and measuring systems.
Applications
Directional couplers find wide applications
in RF / Microwave networks, systems and in microwave measurements.
They perform variety of signal processing functions such
as:
- Power splitting and sampling from signal sources for
level control and monitoring.
- Separation of incident and reflected signals in network
analyzers for reflection, measurement etc.
Description
Avantel's range of Directional Couplers
cover the frequency range of HF through 10 GHz with coupling
coefficient varying from 10 dB to 40 dB. Directional Couplers
are basically 4 port devices with the fourth port terminated
in a matched load either internally or externally. They
separate and sample signals based on the direction of signal
propagation. A system engineer uses these to unequally split
the signal flowing in the main line. They are widely used
in precision microwave systems, instrumentation and measuring
systems.
Directional Couplers may be classified
as narrow band and broad band couplers. Narrow band directional
couplers are of single section design and are a quarter
wavelength long. Broad band couplers contain multiple quarter
wavelength sections. Broad band couplers can be further
divided in to two kinds. One is the symmetric type, which
has an odd number of sections and is used where phase characteristics
also are important. The second is the asymmetrical type,
which gives wider bandwidth than the symmetrical type for
the same number of sections. Thus, asymmetrical couplers
are used where coupler length is more important than the
phase. Directional couplers handling power levels up to
1 kW are available in the frequency range of 2 MHz to 1
GHz and are developed using round rod construction.
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