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If i add band pass filters both input and output of the amplifier. Will the amplifier is stable for entire region except the pass band ?? . Adding BPF will reduce S12 and S21 in out band , will this lead to reduce the stability problem and provide more gain??
i want to design a power driver at 900 MHz. For this application i chose NPTB00004 transistor from maccom. In the datasheet they provide optimum load impedance and optimum source impedance for maximum power.
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I designed a matching circuit for input and output as...
I designed one NFC antenna for NXP 7210 chip. as specified in the NXP antenna design guide i made the antenna and maching circuit with 70 Ohm impedance. Measured impedance data attached with thread. The nfc working in the frequecncy 13.56 MHz. All 13.56 MHz NFC tags are detecting execpt one...
In a case of Amplifier design, for AC blocking we add inductor in collector pin of the transistor. The basic Amplifier network is given below image. When voltage at the base node changes the current through the transistor is also changes, which means current pumps through the PDN is...
in Ku band block up converter, The input frequency is 950 MHz to 1950 MHz . My question is the first harmonics of 950 MHz is 950*2= 1900 MHz. Which is in band of the system frequency . For Up converting if i fed the signal to the amplifier then the 1st harmonics will exists, i cannot...
I want to design a dualgate mixer ,for fm receiver . When i check in google , all the dual gate FETS are obsalete . Will somebody tell why the dual gate fets are obsalte and which componet replaced these type of fets. Will somebody please suggest an alternate circuit configartion for...
I want to create a PIN diode model in AWR . In AWR they have Caverly PIN Diode Model but in the datasheet of Microsemi MPP4204 diode has very less values . I am new to PIN diodes. Will you please explain how can model the PIN diode in AWR? i am attached the datasheet for reference...
In the below image shows a phased antenna array act as receiver. The source 1 and source 2 transmitting simultaneously. Array pattern 1 generated by phase shifters. My doubt is there will be one potential generated by source 1 in all the antennas elements if we consider the generated...
In the attached FM modulator, What is the purpose of set deviation and deviation balance blocks? . Why they give the message signal to both TCXO and VCO? . Where will i get more details about this circuit?
I am designing a FM modulator. In the modulator the message signal is fed to VCO but the message signal has amplitude of 200 mV to 5 V vpp i want to reduce to 0 V to 0.025 mV .? Will somebody please suggest any circuit for that.
please help me ,
i want to measure active S parameter of a 2 port MIMO antenna. i know the equation to calculate active s parameter
is (S11*a1 + S12*a2)/a1 where a1 is the complex
excitation in volts incident on Port 1 and a2 is the complex
excitation in volts incident on...