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HP supplies:
Transistors and building blocks for use in the receiver.
| GPS LNA and Gain Stages |
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receives satellite signal; provides amplification
[1575 MHz and / or 1228 MHz; NF <3 dB]
ATF-21186, ATF-36163, ATF-10236, ATF-13284 as LNA or gain stage
AT-414, AT-415, AT-320, AT-310, AT-305, HBFP-0405, HBFP-0420 as LNA or gain stage
MGA-85563, MGA-86563, MGA-87563, as LNA or gain stage
downconverts signal from 1575 to IF (100 to 300 MHz range typ)
HSMS-280x, HSMS-281x Schottky diode pairs and quads
IAM-81008 IC mixer
IAM-91563 IC mixer
IF: provides intermediate frequency amplification
ATF-21186, ATF-10236, ATF-13284 as gain stage
AT-414, AT-415, AT-320, AT-310, AT-305 as gain stage
INA-30311, INA-32063, INA-50311, INA-51063, as gain stage
AGC: adjusts signal strength into second mixer
HSMP-381x singles and pairs
IVA-05208
downconverts signal from IF (100 to 300 MHz range typ) to baseband
HSMS-280x, HSMS-281x Schottky diode pairs and quads
IAM-81008 IC mixer
converts baseband signal into location information
HP does not presently manufacture devices for the signal processor
| GPS Phase Locked Loop |
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Synthesizes stable reference frequency for first down-conversion
AT-415, AT-320, AT-310, AT-305 as oscillator
INA-31063 as buffer
HSMS-280x Schottky diode pairs and quads as phase detector.
HPLL-8001 (CMOS frequency synthesizer)
Provides frequency for second down-conversion
AT-415, AT-320, AT-310, AT-305 as oscillator
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