What value for Order and MaxOrder in HB simulation?

[asb1211]

hb simulation of imd

In ADS2004A => DesignGuide => Mixer => Single-end mixer characterization => 2nd- and 3rd-order IMD and conv. gain example,
HB simulation controller is set up as following:

MaxOrder=6
Freq[1]=LOfreq
Freq[2]=RFfreq + Fspacing/2
Freq[2]=RFfreq - Fspacing/2
Order[1]=9
Order[2]=3
Order[3]=3
OrderSample[1]=1
OrderSample[2]=1
OrderSample[3]=1
UseKrylov=yes

and in variable decralation there are:

VAR
LOfreq = 900 MHz
RFfreq = 1100 MHz
Fspacing = 200 kHz
P_RF = -30 dBm
P_LO = 0 dBm


Now, I want to use the simulation setup for my Mixer design, pHEMT resistive passive mixer where:
LOfreq = 2350 MHz
RFfreq = 2400 MHz
P_RF = 0 dBm
P_LO = 15 dBm
Fspacing = 1 MHz

Anyone could tell me what value should I set or how I can decide the value of MaxOrder and Order for LO and input RF tones when I want to simulate the IIP3 of the designed mixer?

Also, I read somewhere that

MaxOrder ≥|k1| + |k2| + ... + |kn|

where kn is the harmonic for the nth tone in the circuit.
Can k1 be not integer? or why in the inequality, there need to use the absolute of kn?

 

[asb1211]

Anyone can help plz!!!