Mini GNSS Receiver FEMs Raise The Noise-Figure Bar

April 12, 2012
A new series of receiver front-end modules (FEMs) for implementing Global Navigation Satellite Systems (GNSS) in smartphones and handhelds offer unparalleled noise figures, according to developer Infineon.

Neubiberg, Germany: A new series of receiver front-end modules (FEMs) for implementing Global Navigation Satellite Systems (GNSS) in smartphones and handhelds offer unparalleled noise figures, according to developer Infineon. They also come in a package measuring a mere 2.3 by 1.7 by 0.73mm.

The series consists of two models, both of which support simultaneous reception of GPS (Global Positioning System) and GLONASS (Globalnaya Navigatsionnaya Sputnikovaya Sistema) signals. The BGM1043N7 is a standard solution with 14.8dB gain and 1.5dB noise figure. The high-gain (17.0 dB) BGM1044N7 offers a 1.55dB noise figure for systems with high losses in the receive chain. This can include personal navigation devices and digital cameras, where the potential for jamming due to high-power cellular signals is less critical.

Pre-filter and low-noise-amplifier (LNA) stages of the GNSS signal-chain front-end are combined to achieve a balance of performance improvements and space savings. Other features include high linearity to avoid interference of more powerful cellular signals, single-module coverage of the frequency range from 1575 to 1605MHz, and optimised gain for sensitivity.

The modules are a pin-to-pin-compatible upgrade with the previous-generation BGM103xN7.

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