A 60 GHz uniplanar MMIC 4X subharmonic mixer
2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157)
In this modern age of information, the demands on data transmission networks for greater capacity, and mobile accessibility are increasing drastically. The increasing demand for mobile access is evidenced by the proliferation of wireless systems such as mobile phone networks and wireless local area networks (WLANs). The frequency range over which an oxygen resonance occurs in the atmosphere (~58-62 GHz) has received recent attention as a possible candidate for secure high-speed wireless data
... ed wireless data networks with a potentially high degree of frequency reuse. A significant challenge in implementing data networks at 60 GHz is the manufacture of low-cost RF transceivers capable of satisfying the system requirements. In order to produce transceivers that meet the additional demands of high-volume, mobility, and compactness, monolithic millimeter wave integrated circuits (MMICs) offer the most practical solution. In the design of radio tranceivers with a high degree of integration, the receiver frontend is typically the most critical component to overall system performance. Highperformance low-noise amplifiers (LNAs) are now realizable at frequencies in excess of 100 GHz, and a wide variety of mixer topologies are available that are capable of downconversion from 60 GHz. However, local oscillators (LOs) capable of providing adequate output power at mm-wave frequencies remain bulky and expensive. There are several techniques that allow the use of a lower frequency microwave LO to achieve the same RF downconversion. One of these is to employ a subharmonic mixer. In this case, a lower frequency LO is applied and the RF mixes I would like to thank Dr. Sanjay Raman for the guidance and support provided throughout the course of my research. Dr. Raman has established an excellent infrastructure of mm-wave design and testing resources, without which the completion of this work would be impossible. In addition, I must thank the Bradley Department of Electrical Engineering for funding this research. I would also like to thank the employees of the M/A-COM design center and GaAs IC foundry in Roanoke, VA for fabricating the circuits designed in this thesis.