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Hi all,
I am trying to design a third order chebyshev edge coupled bandpass filter. The center frequency of the filter is 6.2 GHz with a 10% fractional bandwidth.I manufactured the filter and measured it with network analyzer.The passband is fine. But the upper skirt of the filter has ripples...
Hello all,
I am trying to learn some RF power amplifier theory. I am confused in the very begining. Maybe it is a funny question.In Class B RF PA, the drain current is zero for half of the input cycle.(the conduction angle is 180 degrees) That means the transistor does not conduct for the half...
Hi FvM,
I have a diode that has a big input impedance on the order of 1K real part and on the order of 100 ohm imaginary part. I want to make complex conjugate matching from the diode part and on the other part i want to have a 50 ohm impedance to connect baseband circuitry.I should desing a...
Hi FvM,
you are actually right. The corrected question might be a matching circuit that shows on the order of 1K ohm real impedance and on the order of 100 ohm reactance from one of its port and 50 ohm impedance from the other port of it. I plan to use transistor in common collector...
Hello,
I am trying to design a matching circuit that shows (1600+500j) ohm impedance from one of its port and 50 ohm impedance from the other port of it. I plan to use transistor in common collector configuration.But it seems difficult to have an impedance of such high value after 1 MHz. Has...
How can i change the frequency range in axiem in AWR.i change the range on options tab but the simulator calculates between 1-2gHz.Can u help me?Thanx in advance...
Hi Manjunatha,i am trying to design 2-way conventional cpw(ungrounded) wilkinson power divider.How can it possible to define the ground plane that is between the arms of the divider?The two side grounds are touching the enclosure.But i couldnt find a way to define the middle ground planes as...
Hello,
i am trying to simulate a cavity interdigital bandpass filter.But there are several errors.And i couldnt solve them.The error messages are as follows:"firstelement and Box1 intersect","secondelement and Box1 intersect".
How can i solve this problem?Box1 is a box that is air.and i am...
Hello,
i am trying to simulate a cavity interdigital bandpass filter.But there are several errors.And i couldnt solve them.The error messages are as follows:"firstelement and Box1 intersect","secondelement and Box1 intersect".
How can i solve this problem?Box1 is a box that is air.and i am...
Hello all,
i am trying to desing a simple two-way wilkinson power divider by using AWR.I calculated the widths and lengths of the microstrip lines.And i draw them on the EM simulation layout.But i couldnt place the isolation resistor (2Zo) between two arms of the circuit.How can i describe...
i am trying to desing a simple two-way wilkinson power divider by using AWR.I calculated the widths and lengths of the microstrip lines.And i draw them on the EM simulation layout.But i couldnt place the isolation resistor (2Zo) between two arms of the circuit.How can i describe resistance...
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