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Transistor Application Selection Guide
Oscillator

	RF to 900 MHz	RF to 2.5 GHz	RF to 6 GHz	RF to 18 GHz
HBFP-0420	gen pur 3V	gen pur 3V	gen pur 3V	low phase noise to 10 GHz
AT-310xx	gen pur 3V	gen pur 3V	gen pur 3V	low phase noise to 10 GHz
AT-414xx			high gain 3-8V	low phase noise to 8 GHz
HBFP-0405	low pwr 3V	low pwr 3V	low pwr 3V	low phase noise to 12 GHz
HBFP-0450	mod pwr 3V	mod pwr 3V	mod pwr 3V
AT-320xx	mod pwr 3V	mod pwr 3V	mod pwr 3V
AT-415xx	gen pur 3-8V	gen pur 3-8V	gen pur 3-8V
AT-420xx	mod pwr 3-8V	mod pwr 3-8V	mod pwr 3-8V
AT-305xx	low pwr 3V	low pwr 3V	low pwr 3V

ATF-13xxx			low noise GaAs	low noise GaAs
ATF-10xxx			low noise GaAs
ATF-36xxx				low noise PHEMT
ATF-35xxx				low noise PHEMT
ATF-34xxx			low noise PHEMT	low noise PHEMT
ATF-38xxx			low noise PHEMT	low noise PHEMT
ATF-26xxx			high V_br GaAs	high V_br GaAs
ATF-21xxx			pwr GaAs

markets	Cellular & Cordless 900 MHz ISM LAN/modem RF Tag & reader Mobile Radio (SMR) CATV pagers / messaging	GPS (1.5 GHz) PCN (1.8 GHz) USPCS (1.9 GHz) MMDS (2 GHz) 2.4 GHz ISM LAN/modem RF Tag & reader	TVRO (4 GHz) WLL (4 GHz) 5.8 GHz ISM LAN/modem RF Tag & reader	DBS/DSS (12 GHz) VSAT (12 GHz)

Preferences: 1. BJTs (least expensive, lowest phase noise)
HBFP-0420, HBFP-0405
AT-320xx, AT-310xx, AT-305xx
AT-415xx, AT-414xx, AT-420xx

2. low noise FETs (low power oscillators above 6 GHz, next best phase noise to BJTs)
ATF-36xxx, ATF-35xxx, ATF-13xxx, ATF-10xxx

3. general purpose MESFETs (higher breakdowns for medium power oscillators above 6 GHz)
ATF-21xxx, ATF-26xxx

Function: creates AC frequency from DC inputs

Operation: Bias for P_out input matched for |S₂₂'| > 1 output matched to 1/S₂₂'

Key Parameters P out: -10 to +15 dBm

and ranges: Phase Noise: -60 to -120 dBc/Hz @ 10 kHz

this page last updated: 20 October 1999