IMK Series Resistive Coupler
Broadband Low-Loss Device
IMK Series Resistive Couplers provide the sensing function over a broad range of frequencies in a compact, easy to use component. Insertion loss is comperable to the more complicated frequency sensitive couplers.
Like IMS attenuators, the IMK Series is engineered to optimize performance in two ways:
1) Resistive areas are constant and are specified for the lowest dB value ensuring that all couplers easily handle the incident RF power.
Additional Product Information
IMK Series Specifications
Insertion Loss (1 -2): 1dB or less (values greater than 18dB)
Coupling Range: 6 - 30dB
Standard Size: 0.120” x 0.120” x 0.035” MAX
Impedance: 50Ω
Operating Frequency: DC - 20GHz
dB Flatness: See data on below or on data sheet
Operating Temperature: -55°C to 150°C
Dissipated Power: 1W (at 100°C basaeplate temperature)
Through Power: 5W (Value Dependant)
VSWR (main line): 1.2:1 depending on implementation
As with most IMS products:
- You can order any quantity over 100 pieces
- You can order any quantity on tape & reel over 1,000 pieces
Tasks
2) High inductive lines are specified to minimize ground path leakage and maintain low through loss.
The above constraints assure repeatability, reliability and optimal performance. The implimentation of these couplers is simplified to minimized cost and maximize efficency.
IMK Series Configurations & Attachment Options
IMK2549 (Solder or Epoxy)
IMK2550 (Solder or Epoxy)
IMK Series Frequency Response Examples
The following frequency response plots are of the IMK2549 resistive coupler in a coax to stripline fixture which employed proper matching and immplimentation of RF principles. Fixture loss has not been subtracted from the results.
| PN Prefix |
Direction |
Term Style |
Term Material |
Impedance |
Frequency |
Dissipated Power |
Value Range |
| IMK2549 |
Forward |
Wraparound |
PtAg |
50 ohm |
To 20GHz |
1W |
6 to 30dB |
| IMK2550 |
Reverse |
Wraparound |
PtAg |
50 ohm |
To 20GHz |
1W |
6 to 30dB |
| IMK2574 |
Forward |
Wraparound |
Au (input) PtAu (GND) |
50 ohm |
To 20GHz |
1W |
6 to 30dB |
| IMK2575 |
Reverse |
Wraparound |
Au (input) PtAu (GND) |
50 ohm |
To 20GHz |
1W |
6 to 30dB |
