On Passivity Enforcement for Macromodels of S-Parameter based Tabulated Subnetworks

2005 ◽  
Author(s):  
D. Saraswat ◽  
R. Achar ◽  
M. Nakhla
Keyword(s):  
S Parameter ◽  
Passivity Enforcement

Marginal RF Gain Investigation and Root Cause Determination

2013 ◽  
Author(s):  
Keith Harber ◽  
Steve Brockett
Keyword(s):  
Radio Frequency ◽  
Failure Analysis ◽  
Power Amplifier ◽  
Physical Analysis ◽  
Root Cause ◽  
S Parameter ◽  
Mode Of Operation ◽  
S Parameters

Abstract This paper outlines the failure analysis of a Radio Frequency only (RF-only) failure on a complex Multimode Multiband Power Amplifier (MMPA) module, where slightly lower gain was observed in one mode of operation. 2 port S-parameter information was collected and utilized to help localize the circuitry causing the issue. A slight DC electrical difference was observed, and simulation was utilized to confirm that difference was causing the observed S-parameters. Physical analysis uncovered a very visible cause for the RF-only failure.

Accurate measurement of the input impedance of bow-tie antenna by the S-parameter method

2016 ◽  
Vol 5 (6) ◽  
pp. 158-162
Author(s):  
Kazuma Endo ◽  
Takayuki Sasamori ◽  
Teruo Tobana ◽  
Yoji Isota
Keyword(s):  
Input Impedance ◽  
Parameter Method ◽  
S Parameter ◽  
Bow Tie
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