Thu, 24 Jul 2008 23:13:48 BST CiteULike: dcastros balanced http://www.citeulike.org/user/dcastro/tag/balanced CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dcastro/article/2762241 <i>Microwave and Guided Wave Letters, IEEE [see also IEEE Microwave and Wireless Components Letters], Vol. 4, No. 9. (1994), pp. 301-302.</i><br /><br />We report the design, measured and simulated performance of a novel W-band monolithic, singly balanced resistive FET mixer utilizing 0.1-μm pseudomorphic AlGaAs/InGaAs on GaAs HEMT technology. At an LO drive of +8 dBm, this mixer has exhibited a minimum measured conversion loss of 12.8 dB, nearly a 10 dB improvement over previously reported data in this frequency range. Furthermore, the mixer figure of merit, defined as P_1-dB,in-P_LO, is at least +2 dBm, which is nominally 6 dBm better than that of comparable diode mixers at W-band. These results indicate the excellent potential of this mixer for integration with other circuit components in fully monolithic subsystems A W-band monolithic, singly balanced resistive mixer with low conversion loss KW Chang EW Lin H Wang KL Tan WH Ku doi:10.1109/75.311514 Microwave and Guided Wave Letters, IEEE [see also IEEE Microwave and Wireless Components Letters], Vol. 4, No. 9. (1994), pp. 301-302. 2008-05-06T18:33:22-00:00 1994 Microwave and Guided Wave Letters, IEEE [see also IEEE Microwave and Wireless Components Letters] 4 9 301 302 balanced mixer http://www.citeulike.org/user/dcastro/article/2762240 <i>Microwave Theory and Techniques, IEEE Transactions on, Vol. 39, No. 12. (1991), pp. 1980-1986.</i><br /><br />The design and fabrication of four broadband monolithic passive baluns including CPW Marchand, multilayer MS Marchand, planar-transformer and broadside-coupled line baluns are presented. Operational frequencies range from 1.5 GHz to 24 GHz. Maximum relative bandwidths in excess of 3:1 are achieved. Simulated performances using full wave electromagnetic analysis are shown to agree with the measured results. Two accurate equivalent circuit models constructed from either electromagnetic simulated or measured S-parameters are developed for the MS Marchand and transformer baluns making the optimization of baluns and circuit design using the baluns much more efficient. The design of monolithic double-balanced diode mixer using two planar-transformer baluns is also presented. Without DC bias, the mixer shows a minimum conversion loss of 6 dB with the RF at 5 GHz and a LO drive of 15 dBm at 4 GHz. The measured input IP₃ of this mixer is better than 15 dBm over the 4 to 5.75 GHz frequency band Broadband monolithic passive baluns and monolithic double-balanced mixer Chen KW Chang SB Bui H Wang GS Dow LCT Liu TS Lin WS Titus doi:10.1109/22.106536 Microwave Theory and Techniques, IEEE Transactions on, Vol. 39, No. 12. (1991), pp. 1980-1986. 2008-05-06T18:33:19-00:00 1991 Microwave Theory and Techniques, IEEE Transactions on 39 12 1980 1986 balanced balun broadband mixer passive