RF2498-based GPS receiver downconverter circuit

Published:2012/8/25 1:53:00 Author:Ecco | Keyword: GPS receiver , downconverter | From:SeekIC

RF2498 is a high-performance CDMA band / dual mode integrated LNA / mixer circuit, a three- band LNA / downconverter. RF2498 can be used in CDMA / Cellular / PCS / GPS handheld devices, JCDMA / GSP handheld devices, CDMA modems / data cards, commercial and consumer systems, portable batteries. RF2498 meets the requirements of IS-98 sensitivity, interact modulation and tone adjustment. RF2498's gain control is 29dB in the PCS band and gain control 27.5dB in cellular band. RF2498 provides 37dB gain for a GPS LNA / mixer application. The RF2498 uses three-state gain control mode to meet the IS-98 IMD test. The chip has an integrated TX LO buffer.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/RF2498_based_GPS_receiver_downconverter_circuit.html

Print this Page | Comments | Reading(3)