Hi all:
I have a problem need to be solved urgently. If you could help. I will be very appreciated. Thanks.
Problem is a design voltage control oscillator. These are the requirements:
- transistors (bjt and mosfet) and other passive elements like resistors, inductors, capacitors. are allowed.
- Filters are forbidden.
-wo=275Khz range is from 0.8w0 to 1.2wo.
- no jitter and no phase noise requirements so no need any PLL or varactors
- A design only with resistors and transistors quite posible! they say
-higher frequency is quite welcome.
this is a discrete time design. i find some sort of VCOs. I decided to design a ring oscillator. but it does not work; inverters are not inverting. all values keep constant instead of oscillating.
I have a problem need to be solved urgently. If you could help. I will be very appreciated. Thanks.
Problem is a design voltage control oscillator. These are the requirements:
- transistors (bjt and mosfet) and other passive elements like resistors, inductors, capacitors. are allowed.
- Filters are forbidden.
-wo=275Khz range is from 0.8w0 to 1.2wo.
- no jitter and no phase noise requirements so no need any PLL or varactors
- A design only with resistors and transistors quite posible! they say
-higher frequency is quite welcome.
this is a discrete time design. i find some sort of VCOs. I decided to design a ring oscillator. but it does not work; inverters are not inverting. all values keep constant instead of oscillating.