CHV2242A

CHV2242a Q-band VCO based on Ku-band Oscillator and Q-band Multiplier GaAs Monolithic Microwave IC Description The CHV2242a is a monolithic multifunction for frequency generation. It integrates a Ku-band oscillator with frequency control (VCO), a Qband frequency multiplier and buffer amplifiers. For performance optimisation, two external ports (ERC1 and ERC2) allow a passive resonator coupling to the oscillator (at one third of output frequency). On chip Schottky diode, based on a P-HEMT, is used as varactor. All the active devices are internally self biased. The circuit is manufactured with the P-HEMT process : 0.25µm gate length, via holes through the substrate, air bridges and electron beam gate lithography. It is available in chip form. F_VCO = F_out/3 ERC1 MEDIUM Q RESONATOR ERC2 +V -V RF_out x3 (F_out) V_tune Multifunction block diagram 38,7 Output frequency (GHz) 38,6 38,5 38,4 38,3 38,2 38,1 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 1,1 1,2 Main Features n Ku-band VCO + Q-band multiplier n On chip varactor n External resonator for centre frequency control and phase noise optimisation n Low phase noise n Auxiliary output at VCO frequency n High temperature range n On-chip self biasing n Automatic assembly oriented n Chip size 2.41 x 1.18 x 0.1 mm Tuning voltage (V) Typical tuning characteristic (coupled to a micro-strip filter Main Characteristics Tamb = +25°C Symbol F_out F_vco F_tune Pout Parameter Min 38 150 5 Typ 38.25 F_out/3 200 7 MHz dBm Max 38.5 Unit GHz...