Radio Frequency (RF) Forum Discussions

Hello 

I'm looking for a transistor to be used for RF amplification, at the single frequency of 2GHz.

The requirements are ~15dB gain, and 15-18 OP1dB. 

my preference is to use high Vce (up to 10V) and lower current (15mA max) 

Can you please recommend on a part? 

Thanks

In many of the foundry libraries there are options such as “nmos_rf” in addition to standard “nmos” and their layouts are pre-layed out with a guard ring around them.

This makes them a very bad choice when some kind of matching is required in Gilbert mixer or LC VCO as the transistor pairs cannot be interdigitized. Also I will eventually know every parasitic after I layout my circuit and run a parasitic extraction simulation.

So, my question is do you use rf_transistors in a given process and where is the advantage?

I have a desire to design some RF amplifiers in the S-band, around 2 GHz, mostly just to understand a little better and learn more how various styles of amplifier work. But the only RF transistors I can find, especially for power amplifiers, seem to be nearly 50$ apiece from Qorvo or Wolfspeed. Are there any cheap RF transistors I could use while I'm learning (maybe silicon instead of GaN or GaAs)? If so, what would be a good source?

I hope to do a Class A, a Class B, a Class C, and maybe a Class E, and my target Psat would be someplace between 0.5 and 5 W.

Thanks!

Hi,

I am component engineer working with Honeywell Aerospace.

Can you please help to share the P1dB Compression Point (dBm) for MPN BF771E6327HTSA1.

hoping to hear from you soon.

Regards,

Rashi

Hi

In many of the foundry libraries there are options such as “nmos_rf” in addition to standard “nmos” and their layouts are pre-layed out with a guard ring around them.

This makes them a very bad choice when some kind of matching is required in Gilbert mixer or LC VCO as the transistor pairs cannot be interdigitized. Also I will eventually know every parasitic after I layout my circuit and run a parasitic extraction simulation.

So, my question is do you use rf_transistors in a given process and where is the advantage?

Hello,

Looking to design a broadband (100MHz to 6GHz) RF front and need an LNA. Generally use High Band only from 2.2GHz to 5.0GHz.

General targets:

• NF: <1dB
• Gain: >15dB
• OP1dB: >+10dBm
• Input no damage: +10dBm
• 3.3V @ 30mA power consumption

Thank you,

Chris

I need a medium power RF transistor in die form for a high volume hybrid amplifier application. Are parts such as BFP196, BFQ19S or BFR106 available unpackaged?