Directional Couplers

Directional couplers 6 dB 0.5-18 Ghz
Couplers 6 dB
0.5 to 18 Ghz
Directional coupler 10 dB 0.5-40 Ghz
Couplers 10 dB
0.5 to 40 Ghz
 Directional coupler 20 dB 0.5-40 Ghz
Couplers 20 dB
0.5 to 60 Ghz
 Directional coupler 30 dB 0.5-40 Ghz
Couplers 30 dB
0.5 to 18 Ghz
Dual Directional coupler 10 dB 20 dB 30 dB up to 40 Ghz
Dual Couplers
10, 20, 30 dB
 Directional coupler 10 dB 1-1000 Mhz
Couplers 10 dB
1-1000 Mhz
 Directional coupler 20 dB 1-1000 Mhz
Couplers 20 dB
1-1000 Mhz
 Directional coupler 30 dB 1-1000 Mhz
Couplers 30 dB
1-1000 Mhz
Hybrid couplers 90 and 180 degree
Hybrid Couplers
90 and 180 deg.
 High Power Directional coupler 30 dB to 50 dB
High Power
Dual and Single

Features Applications
Octave and multioctave designs up to 60 Ghz Sampling incident and reflected power levels
Low mainline loss Line monitoring power level
High directivity Power measurement
Stripline designs PCS, GSM, LTE, cellular
RoHS compliant Communication systems

Microwave Wideband RF Coaxial Directional Couplers, 6 dB, 10 dB, 20 dB, 30 dB

Broadband, Octave and Multioctave band RF Couplers SMA, 2.92mm, 2.4mm, 1.85mm

Directional Couplers 6dB, 10 dB, 20 dB, 30 dB 0.5-18 Ghz, 1-40 Ghz, 2-40 Ghz, 6-50 Ghz, 6-60 Ghz


SigaTek offers a wide range of Microwave RF directional couplers 6 dB 10 dB 20 dB and 30 dB covering the frequency range of 500 Mhz to 60 Ghz. All directional couplers are designed using stripline techniques and with specifications that exceed commercial applications. Microwave Directional couplers are used in a wide range of applications. Sampling incident and reflected power levels, line monitoring power level, power measurement, instrumentation power monitoring, RF test equipments, receivers and transmitters. Directional RF couplers are used to sample energy from the transmission line where this energy is fed to a detector and then to a signal processing equipment. Return loss measurement is another application that couplers are used. This application is done better with the use of high directivity dual couplers (two couplers connected back to back).

Microwave Octave Band Couplers

Microwave Multi-Octave Band Couplers

Schematic of an Octave Band Coupler

Microwave Octave Band Directional Couplers 6 db, 10 dB, 20 dB, 30 dB IN STOCK Microwave Wideband Directional Couplers 6 db, 10 dB, 20 dB, 30 dB IN STOCK Schematic Coaxial Directional Couplers 6 db, 10 dB, 20 dB, 30 dB IN STOCK

Directional Couplers Definition of Specifications

Coupling
The ratio in dB of the incident power fed into the Input port to the Coupled port power with all unsused ports terminated to matched 50 ohms. Due to wide frequencies band the Nominal coupling is defined as the arithmetic mean-average of the maximum and the minimum coupling within the frequency band. Wikipedia Mean Average Definition.

Coupling Tolerance
The specified allowable unit to unit variation in dB in nominal coupling.

Coupling Flatness
The maximum peak to peak variation in dB from the nominal coupling over the specified frequency range.

Coupling Theoretical Loss
The theoretical main line loss in dB due to power coupled to the coupling port.

Insertion Loss
The physical loss of the device from input to output in the specified frequency range. The total loss is the sum of the coupling theretical loss and the insertion loss.

Directivity
The power ratio in dB of the RF power from the mainline to the coupled port in the forward direction compared to that in the reverse direction. Is the same as the Isolation which is the power ratio from the output to the coupling port with all unused ports terminated to matched 50 ohms.

VSWR-Return Loss
The voltage standing wave ratio specified for each port when all unused ports are terminated to matched 50 ohms.

Average Power
The continous wave CW average power handling capability of the device. Due a variety of designs, dielectric materials and interconnect assemblies Sigatek's devices are rated with different power specifications. See specific data sheet for the specified power rating.

Theoretical Insertion Loss Due to Coupling factor (dB)
Coupling (dB) 3 6 10 20 30 40 50
Coupling Loss (dB) 3.01 1.2560 0.4560 0.0436 0.0043 0.0004 0.00004