How to generate a high-frequency clock?
SAW

Impatt Diode

Gunn Diode

Magnetron / Klystron  / TWT

Esaki diode (tunnel diode)

fXo

Fractional N synthesiser.

More ... 




For $US35.70/1 on stock you can gete 1 GHZ fxo modules from Digikey here for prices.

FXO-PC73 series. Up to 1.35 MHz. Multiply in various ways from there.
 Datasheet here They say:


EXTREMELY Low Jitter   
Low Cost   
Frequency Resolution to six decimal places   
Stabilities to ± 20 PPM   
-20 to +70°C or -40 to +85°C operating temperatures   
Serial ID with Comprehensive Traceability  




For $5/1 you can buy synthesiser ICs that cover your range.
 Typical example only 

Pricing
 Datasheet TI LMX2434 



Gunn diode oscialltyors using cavities for fequency tuning and with varactors for tuning are a time honoured solution and may give you power levels that can be used directly. 

intro
 more intro - good  

ZAX Gunn oscillators
 Zax catalog - very pretty  

Gunn XBan - well above your range useful

Ham Radio mag 1980 DIY 10 GHz - very relevant if DIYing here



MUCH more.
More detail please.
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