IMK Series Resistive Coupler • IMS
15218
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IMK SERIES RESISTIVE COUPLER

IMK Series Surface Mount Thick Film Coupler

The IMK Series Resistive Couplers provide the sensing function over a broad range of frequencies in a compact, easy to use component. With alumina construction, insertion loss is comparable to more complicated frequency sensitive couplers.
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As with IMS attenuators, the IMK Series is engineered to optimize performance in two ways:
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1) Resistive areas are constant and are specified for the lowest dB value ensuring that all couplers easily handle the incident RF power.
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2) High inductance lines minimize ground path leakage and maintain low through loss.
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The above constraints assure repeatability, reliability and optimal performance. The design and construction of these couplers is simplified to minimize cost and maximize efficiency.

IMK SERIES SPECIFICATIONS

Insertion Loss (ports 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 following pages
Operating Temperature: -55°C to 150°C
Dissipated Power: 1W at 100°C Baseplate Temperature
VSWR (main line): 1.2:1 depending on implementation
Construction: Thick Film on Alumina
Attachment: Solder, Epoxy or Wirebond