'Fundamental' related articles 1

  1. 2007/12/31 HMC557 - GaAs MMIC FUNDAMENTAL MIXER, 2.5 - 7.0 GHz
Typical Applications
The HMC557 is ideal for:
• WiMAX & Fixed Wireless
• Microwave Radio
• Military & Space
• Communications, Radar & EW
• Test Equipment & Sensors

Features
High LO/RF Isolation: 48 dB
Wide IF Bandwidth: DC - 3 GHz
Passive Double Balanced Topology
Low Conversion Loss: 7 dB
Small Size: 1.02 x 0.94 x 0.1 mm

General Description
The HMC557 is a passive double balanced mixer that can be used as an upconverter or downconverter between 2.5 and 7 GHz. The miniature monolithic mixer is fabricated in a GaAs MESFET process, and requires no external components or matching circuitry.
The HMC557 operates with LO drive levels as low as +9 dBm and provides excellent LO to RF and LO to IF isolation due to optimized balun structures.
Measurements were made with the chip mounted into in a 50 ohm test fi xture and includes the parasitic effects of wire bond assembly. Connections were made with a 1 mil wire bond with minimal length (<12 mil).

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