These waveguide bandwidth integrated coupler/mixers are designed to allow phase locking or signal monitoring of compact millimeter wave systems.  RF inputs and outputs are on opposite sides of a thin wafer to obtain minimum insertion length.  These devices use silicon Schottky barrier beam-lead diodes on a rugged stripline circuit.  Nominal coupling value is 10 dB.  For coupling values greater than 10 dB, non-directional coupler models are available (consult factory).
 
 

SPECIFICATIONS
 

MODEL	FREQUENCY (GHz)	INSERTION LOSS	Minimum detectable signal* (dBm)	WAVEGUIDE	FLANGE COMPATIBILITY	DIMENSIONS (INCHES)
CKaM	26.5-40	2.0 dB MAX. 1.0 dB TYP.	-75	WR-28	UG-599/U	1.6x.82x 24
CQM	33-50		-70	WR-22	UG-383/U	1.9x1.125x.22
CUM	40-60		-68	WR-19	UG383/U (MOD)	1.9x1.125x.22
CVM	50-75		-65	WR-15	UG-385/U	1.5x.75x.2
CEM	60-90		-62	WR-12	UG-387/U	1.5x.75x.2
CWM	75-110		-60	WR-10	UG387/U (MOD)	1.35x.75x.18

LO Power requirement +15 dBm maximum, +6 dBm typical
Bias requirement:   See application note MIXER DIPLEXER AND DIODE BIAS.  Typically operates self biased with DC return to ground.
LO & IF frequencies to 18 GHz
*Minimum detectable signal in 1 KHz bandwidth, measured with Tektronix 492 or 494 Spectrum Analyzer.