Test
Transcript of Test
FEST3D analysis based on:
• Integral equation + Method of Moments + Network Theory.
• BI-RME Method, Cavity theory...
FEST3D design:
• Dual-mode, Lowpass, Bandpass, Transformers.
FEST3D high power analysis:
• Multipactor
• Arcing (Corona)
DESIGN
HIGH-POWER ANALYSIS
FULL-WAVE ANALYSIS
FEST3D is able to analyse:
• Comb-line filters
• Dual-mode filters
• Multiplexers
• Waffle-iron filters
• Couplers
• Power Dividers
• Polarizers
• Inter-digital filters
• OMT’s
• Infinite phased arrays
• …
FEST3D is able to synthesize:
• Wideband bandpass filters
• Corrugated lowpass filters
• Transformers
• Dual-mode filters
In the following, FEST3D simulations have been compared to:
• Finite Element based software.
• Finite Integration based software.
• Measurements.
Most of the examples shown are taken from the literature.
S-parameters in waveguide elements: Canonical Filter
*Kocbach, J. Folgero, K. ,
“Design procedure for waveguide filters with cross-couplings”,
International Microwave Symposium, 2002, Page(s): 1449 - 1452
Frequency independent part: 0.9 s
Frequency dependent part: 0.09 s/fp
Total Simulation time (100 fp): 10 s
S-parameters in waveguide elements: Moreno coupler with coaxial ports
Frequency independent part: 37 s
Frequency dependent part: 0.22 s/fp
Total Simulation time (100 fp): 60 s
S-parameters in waveguide elements: Waveguide assemblies
Frequency independent part: 3 s
Frequency dependent part: 0.00026 s/fp
Total Simulation time (100 fp): 3 s
S-parameters in waveguide elements: Multiplexers
Courtesy of the Technical University of Valencia
Frequency independent part: 9 s
Frequency dependent part: 0.05 s/fp
Total Simulation time (200 fp): 19 s
S-parameters in waveguide elements: Ridge Filter
Frequency independent part: 0.9 s
Frequency dependent part: 0.3 s/fp
Total Simulation time (500 fp): 151 s
S-parameters in waveguide elements: Diplexer with compensated T-junction
Frequency independent part: 1.5 s
Frequency dependent part: 0.006 s/fp
Total Simulation time (500 fp): 4.5 s
S-parameters in waveguide elements: Waffle-Iron filter
*Manuilov, M. B., Kobrin, K. V.,
“Field Theory CAD of Waffle-iron filters”, European Microwave Conference, 2005.
Frequency independent part: 0.6 s
Frequency dependent part: 0.001 s/fp
Total Simulation time (150 fp): 0.8s
S-parameters in waveguide elements: Bandpass filter with coaxial excitation
Frequency independent part: 10 s
Frequency dependent part: 0.055 s/fp
Total Simulation time (300 fp): 26 s
S-parameters in waveguide elements: Waffle-Iron filter
Frequency independent part: 1.7 s
Frequency dependent part: 0.008 s/fp
Total Simulation time (300 fp): 4.1 s
S-parameters in waveguide elements: Bends
Frequency independent part: 2 s
Frequency dependent part: 0.06 s/fp
Total Simulation time (100 fp): 8 s
S-parameters in waveguide elements: Inductive dual-mode filter
*Guglielmi, M., Jarry, P., Kerherve, E., Roquebrun, O, Schmitt, D.
“A new family of all-inductive dual-mode filters”, IEEE Transaction on Microwave Theory and
Techniques, 2001, Page(s): 1764-1769, vol 49, Issue 10.
Frequency independent part: 0.2 s
Frequency dependent part: 0.002 s/fp
Total Simulation time (100 fp): 0.6 s
S-parameters in waveguide elements: Bandpass with inductive posts
*Meyer, P.,
“The design and analysis of waveguide E-plane filters with multiple round inductive posts
using a moment.method approach”, IEEE Africon 1996, Page(s) 532-535, vol 1.
Frequency independent part: 3 s
Frequency dependent part: 0.0005 s/fp
Total Simulation time (100 fp): 3.2 s
S-parameters in waveguide elements: Band-pass with 3D rounded corners
Courtesy of Virginia Diodes, Inc.
Frequency independent part: 9 s
Frequency dependent part: 0.001 s/fp
Total Simulation time (500 fp): 9.5 s
S-parameters in waveguide elements: 10 channel Multiplexer
Courtesy of the Technical University of Valencia
Frequency independent part: 25 s
Frequency dependent part: 1 s/fp
Total Simulation time (500 fp): 525 s
S-parameters in waveguide elements: High-power resonant ring
Frequency independent part: 1 s
Frequency dependent part: 0.2 s/fp
Total Simulation time (100 fp): 21 s
Courtesy of the Public University of Navarra
S-parameters in waveguide elements: Coaxial-to-waveguide transitions
Coaxial to waveguide transitions can be simulated in few seconds (broadband)
S-parameters in waveguide elements: Evanescent filter
Frequency independent part: 5.6 s
Frequency dependent part: 0.02 s/fp
Total Simulation time (200 fp): 9.7 s
S-parameters in waveguide elements: Bandstop*
* Matthei, Young & Jones, Microwave Filters, Impedance Matching Networks…, 1964
Frequency independent part: 1 s
Frequency dependent part: 0.02 s/fp
Total Simulation time (100 fp): 3 s
S-parameters in waveguide elements: Re-entrant post cavity filter
Frequency independent part: 300 s
Frequency dependent part: 0.02 s/fp
Total Simulation time (100 fp): 302 s
S-parameters in waveguide elements: Re-entrant post cavity filter
S11 (FEST3D)
S21 (FEST3D)
S11(FE)
S21(FE)
Frequency independent part: 272 s
Frequency dependent part: 0.005 s/fp
Total Simulation time (100 fp): 272 s
Synthesis in waveguide elements: Dual-mode filter
In collaboration with the Technical University of Valencia
Automatic synthesis
3 min procedure!!
NO Post-optimization required
Synthesis on TE11n (n=1,..,5) and up to 12 poles is available
Simulation vs. Measured data
Synthesis in waveguide elements: Bandpass filter with rounded corners
• 5-pole, rounded corners, NO POST-OPTIMIZATION!!
• Total synthesis time: 10 seconds.
In collaboration with the Technical University of Valencia
Full-Wave Response
17% BW, Equiriple response!
Synthesis in waveguide elements: Lowpass filter
• NO POST-OPTIMIZATION!!
• Total synthesis time: 3 seconds.
In collaboration with the Technical University of Valencia
Full-Wave Response
Gas discharge (Corona):
• Breakdown determination in waveguides.
• Breakdown determination in Coaxial cavity elements.
• Breakdown at ambient pressure.
Vacuum discharge (Multipactor):
• Breakdown determination in waveguides.
• Breakdown determination in Coaxial cavity elements.
• Multicarrier Multipactor Simulation.
High power features
High power features
Multipactor Breakdown onset in a set of filters
FEST3D prediction has been crosschecked with more than 50 measurements:
Summary of breakdown levels in silver plated components
High power features
Air breakdown in corrugated lowpass filter
Breakdown in the presence of dry air
Multipactor Breakdown (vacuum):
8 W
E field
High power features
RF Breakdown in Coaxial Cavity filters