Design Millimeter wave oscillator

[SASSA]

Hi all, i need to design a Millimeter wave oscillator to complete my undergraduate. The operating frequency is at 13GHz. I already found the suitable transistor that is NE71383B. I need to simulate this project using ADS. Can some one guide me on how to design the circuit? Thanks.

 

[BigBoss]

There are many topplogies for those frequencies like DRO,YIG, Ceramic Resonator Oscillator, etc.
What kind of topology you intend to use ? What purpose will work for ???
Forget about Colpitts,Hartley,Clapp oscillators and lumped L-C components they are not suitable for those frequencies.You should consider either Distributed type Oscillator with Microstrip/Strip Line elements or MMIC ( Monolithic Microwave Integrated Circuits )...
Have ever you read Grebennikov's " Rf and Microwave Transistor Oscillator Design " ( WILEY 2007) or Ulrich Rohde's book ??

 

[SASSA]

Hi thanks. Yes I need to design a distributed type oscillator with Microstrip layout. Any examples of topologies for that type of oscillator?

 

[BigBoss]

You can start from this point.There are others to be inspired but Monoltihic solutions are much better for that operating of frequency.Or You can consider a Push-Push oscillator in order to use second harmonic as main carrier.As I said before, there are many topologies to be considered.You have to research a bit..
T. Ohira, T. Hiraoka and H. Kato,‘MMIC14-GHzVCOand Miller FrequencyDivider for Low-Noise
Local Oscillators’, IEEE Trans. Microwave Theory Tech., MTT-35, 657–661 (1987)

 

[biff44]

since this would be for credit, you should realize that 13 GHz is NOT "millimeter wave"

 

[SASSA]

Hye, thanks for the circuit, really help me a lot !!..BTW, those lambda/4 is represent for what? thanks.

- - - Updated - - -

tq biff44..