Methods to increase instability (make k<<1 factor). Adding inductor does not help.

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Methods to increase instability (make k<<1 factor). Adding inductor does not help.

From book i learned that adding inductive stub can make k smaller. But it seems it does not work for my S params:

F=6
	F = 6
L=0.8
	L = 0.8

Zid=i*2*Pi*F*L
	Zid = 30.159289474i

Z11=Z11+Zid
	Z11 = 39.884605823 - 25.368401798i
Z12=Z12+Zid
	Z12 = 7.042220881 + 28.456758837i
Z21=Z21+Zid
	Z21 = 401.927505419 + 426.637238752i
Z22=Z22+Zid
	Z22 = 81.999216336 + 3.857342339i


'Z param to S

S11=( (Z11-Conj(Z01))*(Z22+Z02)-Z12*Z21) / ( (Z11+Z01)*(Z22+Z02)-Z12*Z21 )
	S11 = 0.637866736 - 0.315085812i

S12= (2*Z12*Sqrt(Re(Z01)*Re(Z02)))/ ((Z11+Z01)*(Z22+Z02) - Z12*Z21)
	S12 = -0.045795371 + 0.096217929i

S21= (2*Z21*Sqrt(Re(Z01)*Re(Z02)))/ ((Z11+Z01)*(Z22+Z02) - Z12*Z21)
	S21 = 0.146388112 + 2.125592326i

S22=(   (Z11+Z01) * (Z22-Conj(Z02) ) -Z12*Z21 ) / ( (Z11+Z01)*(Z22+Z02)-Z12*Z21 )
	S22 = 0.688880575 - 0.135868441i

' stab factor

delta=S11*S22-S12*S21
	delta = 0.607827776 - 0.220465327i

k=(1-Abs(S11)^2-Abs(S22)^2+Abs(delta)^2) / (2*Abs(S12*S21))
	k = 0.922500853

and when not using inductor k=0.74. Any other simple methods?

 

[Terminator3]

Re: Methods to increase instability (make k<<1 factor). Adding inductor does not help

Still have this problem. How i can increase instability of microstrip oscillator? Tried variety of source stubs, but it seems effect is too little