WME: AM NOISE IN MODERN RECEIVERS Date & Time: Monday, June 13; 8:00 AM to 12:00 PM Location: Long Beach Convention Center, Room 202C Topics & Speakers:  

• System Noise Modeling of Mixers, S. Maas, Applied Wave Research Noise, LO and spurious effects on even harmonic mixers, K. Itoh, Mitsubishi Electric Corporation AM Noise in MMIC Block Receivers, S. Mahon, Mimix Broadband

  Direct Conversion: Circuit tradeoffs for low noise reception, M. Camiade, United Monolithic Semiconductor  

• Effects of AM Interference in Modern Receivers, A.W. Hietala, RF Micro Devices

Organizers: E. Camargo, iTerra Communications B. Henderson, M/A-COM   Sponsors: MTT-22: Signal Generation and Frequency Conversion MTT-16: Microwave Systems MTT-1: Computer Aided Design  

Communications receivers operating from VHF through mm Wave in recent years have been assembled with a mixture of MMICs and discrete components on PCB or ceramic substrates. The MMICs have usually been amplifiers, either low noise or drivers; and the discrete components have been diode mixers and filters. Increasingly this approach is giving way to higher levels of chip integration due to ever increasing market demands for lower costs. Higher levels of chip integration exist in heterodyning block down converters, and in direct conversion receivers with zero or near-zero frequency IF. Direct conversion MMICs are already in use in cellular phones and may soon migrate to higher frequencies. A clear understanding of AM noise is critical to meeting the needs of communications receivers, especially as the density of MMICs continues to increase. The focus of this half-day workshop will be on the analysis of image and LO AM noise effects on the down conversion process, either for fundamental or sub-harmonic, and how these types of noise can be calculated and minimized in the development of low cost receiver chips. Phase noise, as it relates to this, will also receive limited coverage. The subject will be approached from the points of view of system design and circuit design. Experts in system design will focus on the mixing process as a behavioral model that combines characterization data from individual components to estimate overall performance. And experts in circuit design will focus on minimizing noise contributions of the individual components. There will be overlap from both sides to maximize clarity and accuracy of this, often confusing, subject.