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Hi,
I have seen some receivers that has single synthesizer chip from which both LO1 and LO2 have been derived(LO2 have been derived by using dividers), also in some receivers i have seen manufacturer has provided the option of separate LO1 and LO2,I just want to know which option is best ...
Hi,
If THRU defines reference plane in TRL then what is the requirement of line ? i know the calculations i only want to know the physical significance.
Regards
Avijit
Greetings,
It has been observed that in any nonlinear circuits such as , diode mixers, active mixers and in some power amplifiers(biased in CLASS-F) where harmonic terminations are such that ; for odd harmonics terminations open circuits are being used where as for even harmonics short circuit...
Hi,
since we are using FET for the multiplier design9 using transconductance nonlinearity or conductance nonlinearity)
If we use FET (or BJT ) for analog dividers what is the design philosophy?
Any anybody suggest me....
Regards
Hi all,
i want to design a MMIC circuit using lumped matching network,operating frequency is at Ku-band( 14GHz) with a bandwidth of 1GHz,can anybody guide me whether lumped matching is a good option? ( as by lumped matching only i am able to reduce the size of the circuit)
What is the basic...
Hi,
How to determine the overall reliability of the Rf Frontend, which consist of Threes stage LNA,image reject filter with a single balance mixer...
What are the major failure points which needs to be addressed while designing the frontend.
How to determine the reliability factor of your...
Hi,
I have some doubts regarding the design of LOW noise amplifier in MMIC :
I have two PDKs libraries of foundries; one is having PHEMT using Enhancement mode and other is having PHEMT using Depletion mode ( My frequency of operation is Ka-band), which device (E-PHEMT or D-PHEMT)shall i use...
Hi,
I am designing an active doubler,using reflector networks at both sides, reflector network consist of a series line as well as an idler circuit ( quarter wave open stub), idea is to reflect the undesired harmonics back to device in phase,.
since the quarter wave stub is resonant at one...
Hi all,
can anybody explain how coupled line filter works..., simple derivation will be appreciable in terms of even and odd mode .
In all MMIC foundry PDKs, they are supplying coupled line models,how much tight coupling can be achieved while fabricating a coupled line filter in GaAs...
Sir,
Then can i say Fmax is the major parameter ?I got a quotation of two foundries one is having Ft= 60GHz and other is Ft=90GHz, which one shall i choose ?Any other parameter can also i have to consider ?
My frequency of operation is 12-18GHz, Can i use HBT instead of PHEMT?
In some of the...
Dear All,
I am planning to design a LNA (12-18 GHZ) and an active multiplier in this band in MMIC ,can anybody let me know what are the foundry parameters i have to choose before start of the design ?
What Ft will be the best for this range ? Any other parameter can i have to choose?, please...
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