Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2003
> June
> NJG1553BF 1.9GHZ band gaasfet rf mixer mmic njr 100PC
NJG1553BF 1.9GHZ band gaasfet rf mixer mmic njr 100PC
LOW NOISE, GaAs FET 1.9GHz BAND MIXER MMIC
MTP6 PKG'D WITH INTERNAL GaAs FET VCO AMPLIFIER
Image Hosted by DEDAKI http://
PARTS ARE BEING REMOVED WHEN BOUGHT FROM A NEW REEL!
AS THE TITLE STATES, WE ARE SELLING OFF 100PC LOTS OF THIS GREAT DUAL GaAa FET 1.9GHz BAND MIXER MMIC.
THEY ARE MNF'D BY NJR AND IT'S PART NUMBER IS NJG1553BF. THEY COME IN A MTP6 PKG WHICH IS JUST LIKE THE
STANDARD SOT-23-6 SMT PKG. THEY DO WORK FROM 1.8-2.0GMHz WITH LESS THEN 1.5dB CONVERSION LOSS. THEY
ARE PERFECT FOR USE IN EITHER THE PCS 1.9GMHz BAND OR ANY OTHER EQUIPMENT IN THE 1.85-1.95GHz BAND. I
DID SAY THAT USING THEM OUT OF THIER SPEC CAUSES A 1.5dB CONVERSION LOSS BUT SINCE THEY HAVE A VERY
HIGH CONVERSION GAIN NORMALY THIS IS NO PROBLEM AT ALL!
WHEN I GOT THESE I BUILT UP A SIMPLE 2.4GHz ATV RECEIVER USING A 70MHz IF THUS ALLOWING ME TO USE MY
OLD 70MHz 20MHz BW FILTERS AND A TEMIC WIDE BAND FM DEMODULATOR IC. IT WORKED GREAT & TUNED FROM
JUST ABOUT 2.41GHz TO ABOUT 2.49GHz AND THE CONVERSION GAIN DID DROP 3.5dB AND THE NF DID GO UP 1.0dB
BUT THESE UNITS HAVE SO MUCH CONVERSION GAIN & START WITH A NICE LOW NF THE DIFFERANCE IS ALMOST
HARD TO SEE UNLESS YOU REALLY LOOKED FOR IT!
Image Hosted by DEDAKI http://
AS YOU CAN SEE FROM THE ABOVE PICTURE THESE MIXERS HAVE NO INTERNAL TUNING. SO ALL THE TUNING IS
DONE EXTERNALY BY USING INDUCTORS & CAPACITORS. SO THE ONLY MAXIMUM FREQUENCY RESTRICTION HAS
TO BE FROM THE TWO FET'S THEMSELVES. THERE IS A SINGLE GATE FET AS THE VCO AMPLIFIER THEN THERE IS
A DUAL GATE GAAS FET AS THE MIXER. SO AGAIN ONE CAN SEE THAT THE TUNING IS ALL DONE ON THE OUTSIDE
THUS MAKING IT'S USES A LOT MORE THEN JUST WHAT IT WAS BUILT FOR.
ONE ENGINEER EMAILED ME AND SAID THAT HE WAS ABLE TO CONVERT THE VCO AMPLIFIER SECTION INTO A VCO
BY USING THE STANDARD PARTS, AN INDUCTOR, VARACTOR DIODE, SOME CAPACITORS & RESISTORS. ANYWAY HE
SAID THAT WITH A LITTLE COMMON SENSE ANYONE COULD DO IT TOO!
BUT YOU CAN USE THESE MMIC'S ANY WAY YOU WISH!
THANKS FOR LOOKING AND GOOD LUCK!
Please look at my other items for sale!
View and search all the items in my picture gallery
