Help me design non-LC VCO

[nearownkira]

I wanted to design a VCO without the LC, anyone can help me?Anyone have any tutorial?

 

[khouly]

lc-vco tutorial

u can use ring oscillator , and make it tunable by changing the current , "current straved ring "

check **broken link removed**

khouly

 

[rogerynt]

Re: design non-LC VCO

How about use dielectric, saw resonator. etc

Rogerynt

 

[nearownkira]

Re: design non-LC VCO

u can use ring oscillator , and make it tunable by changing the current , "current straved ring "

check **broken link removed**

khouly

thanks very much, I had check the link given.my task is to design VCO with only transistor in CMOS process.

My understanding is VCO is make up of 3 parts: bias circuit , delay celll and tuning circuit, the problem is what kind of input should i use in VCO?

Added after 3 minutes:

How about use dielectric, saw resonator. etc

Rogerynt

my design can only use transistor only.

 

[khouly]

design non-LC VCO

then use ring oscillator , and u can make it tunable

khouly