Features: The suppression of undesired fundamental and higher order harmonics is 33 dB typical with respect to input signal levels. This is a miniature passive frequency doubler, uses the same diode/balun technology used in Hittite MMIC mixers. The doubler is ideal for high volume applications where frequency doubling of a lower frequency is more economical than directly generating a higher frequency. The passive diode doubler technology contributes no measurable additive phase noise onto the multiplied signal. Wide application: Wireless Local Loop; LMDS, VSAT, and Point-to-Point Radios; UNII & HiperLAN;Test Equipment Specifications: Conversion Loss: 13 dB Fo, 3Fo, 4Fo Isolation: 33 dB　 Input Drive Level: +10 to +15 dBm Input: 0.87-2G(HMC187), 2-4G(HMC189), 4-8G((HMC204) (Optional) Size: 5 x 2.2cm / 1.97 x 0.89in Weight: 5g Package included: 1 x Passive Frequency Doubler 1、The suppression of undesired fundamental and higher order harmonics is 33 dB typical with respect to input signal levels. 2、This is a miniature passive frequency doubler, uses the same diode/balun technology used in Hittite MMIC mixers. 3、The doubler is ideal for high volume applications where frequency doubling of a lower frequency is more economical than directly generating a higher frequency. 4、The passive diode doubler technology contributes no measurable additive phase noise onto the multiplied signal. 5、Wide application: Wireless Local Loop; LMDS, VSAT, and Point-to-Point Radios; UNII & HiperLAN;Test Equipment