Radio Frequency (RF) Forum Discussions

hi Sir

I am reading the specification of BGS13SN8 . 

I am not understand of the parameter of "Ctrl to RF Time " meaning ?

the comment show " 50% of ctrl signal to 90% of RF Signal " , does it mean when control signal input and raise to 50%  AND 90% RF signal happen ?

What are the likely failure conditions when RFFE Control Voltage Levels are exceeded on BGSA family Antenna Tuners?

I'm specifically interested in understanding the failure condition when USID_SEL is pulled up to 3.0V on BGSA143ML10.

VIO is within spec at 1.8V. 

The Max sustained voltage on RFFE Control Voltages is listed as Vio+0.7 up to a max of 2.2V. There's also the instantaneous ESD levels of several kV that these pins can withstand.

Those inputs are likely protected with a 0.7V diode. Is there a sustained current rating for those diodes?

If the input does fail, is it expected to fail open, shorted to Ground, shorted to Power, or some other case?

With the understanding that the input pins should NOT be connected to any source above 2.2V, I appreciate all comments.

Greg 

Parts:BAR6303WE6327HTSA, What is the reason for the instability of forward current?When supplying DC through a regulated power supply alone, it was found that the current was suddenly high and unstable.We originally used the BAP70-03W parts （D2~D6， All 5）for this circuit, but later the BAP70-03W parts was discontinued and replaced with your company's model. Perhaps the substitute we are looking for does not match. Is there any other model that your company can replace the BAP70-03W parts? Could you please recommend it to us? Thank you.

Screen printing issues with BCR08PNH6727XTSA1     Is the direction of arrival screen printing reversed from the direction of the specification screen printing?

Good morning

I need to build a switcher up to 6GHz. Using the PIN diodes. I understand what to do in terms of schematic, but when I try to 
layout the components the PCB itself is never capable of reaching the frequency range. The problem is there is always a node
very populated of converging footprints and the capacitance increases too much. I have tool to simulate the PCB, and no solution is coming. A 'normal' layout with all of the PIN Diodes concentrated in a big spot reaches no more the 1 GHz. So I need a suggestion for a working layout.
A switcher out of the shelf does not work, I need to switch more power.

Thank You

Pietro