PMI Model No. DPX-18G26R5G40G is an ultra small, low loss diplexer for use over the frequency range of 18.0 to 40.0 GHz.  This model is designed to have a crossover frequency at 26.5 GHz and greater than 60 dB of rejection.  Features include 2.92mm female connectors. Unit size is 0.80" x 0.60" x 0.38". 

• Frequency Range:  18.0 to 40.0 GHz
• Insertion Los (Passband):  2 dB Max - Measured 1.3 dB
• VSWR (Passband):  2.5:1 Max - Measured 2.4:1
• Diplexer K Band 1dB Passband:  18.0 GHz, Min, 25.0 GHz Max
• Diplexer Ka Band 1dB Passband:  28.0 GHz Min, 40.0 GHz Max
• Crossover Band:  25.0 GHz Min, 28 GHz Max
• Crossover Excess Attenuation:  5 dB Typ - Measured 4.8 dB
• Stopband Attenuation:  60 dB - Measured 64 dB
• K Band (Stopband):  32.0 to 46.0 GHz
• Ka Nband (Stopband): DC - 22.0 GHz

PMI Website Link: http://www.pmi-rf.com/products/filters/DPX-18G26R5G40G.htm