Negative Inductor simulation in ADS

Hello everyone,
I need to design a negative inductor of value around-20nH to -25nH in the frequency range of 100MHz to 250MHz.
I have read some Thesis/papers like:

https://www.google.com.sa/url?sa=t&r...yZfOW4t5pdFoug

This thesis shows a -30nH inductor made using a pair of transistor but does not show the process of designing it. How can I manage different trade offs (e.g. bandwidth, flatness, loss etc.). Can anyone help me in getting the detailed information (book chapter etc.?) or related theory how can I design, simulate and fabricate the negative inductance in the frequency range of interest.

Will be really grateful for your help.

Ref [12] explains it but I do not know how much it helps you.

http://ieeexplore.ieee.org/document/5067360/

It explains the general concept behind the design which is NIC (negative impedance converter).

As required for a scientific text, the bibliography has references to NIC design. This can be your starting point.

Thanks for your reply. I have seen this paper but it explains negative capacitor and I am looking for negative inductor to be used in series with the circuit.

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