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I will design and simulate active and passive filter circuits
Professional Electrical Engineer with hands on experience in analog circuits
Greetings!
I am Rajab Ali, a passionate Electrical Engineer with 7+ years of experience in Analog Circuit Design, Power Electronics, PCB Development, and Embedded Systems.
Over the years I have worke...
Level 1
Has met certain performance criteria and shows strong potential in the marketplace.
Highly Responsive
Known for exceptionally quick replies
About this Gig
Struggling to design a filter that meets your frequency
specifications? Let me handle the simulation for you!
I offer professional active and passive filter circuit design
and simulation using LTspice providing accurate frequency
response analysis and Bode plots for your exact requirements.
WHAT I CAN DESIGN & SIMULATE:
- Low-Pass, High-Pass, Band-Pass & Band-Stop filters
- Notch & All-Pass filter designs
- Butterworth, Chebyshev & Bessel filter topologies
- Sallen-Key & Multiple Feedback (MFB) active filters
- RC, RLC passive filter networks
- Anti-aliasing & reconstruction filters
- Audio equalizer filter circuits
- AC sweep & Bode plot generation
- Cutoff frequency & Q-factor verification
- Monte Carlo & component tolerance analysis
DELIVERABLES:
- LTspice schematic file (.asc)
- Bode plot & frequency response curves
- Cutoff frequency verification
- PDF report with design explanation
Whether you need a filter for audio, communications,
power electronics, or personal project I deliver
precise, well-documented simulation results fast.
Message me with your filter specs before ordering!
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FAQ
What specifications do I need to provide for you to design my filter?
The more details you share, the better. Ideally provide your desired filter type (low-pass, band-pass, notch, etc.), cutoff frequency, passband gain, stopband attenuation, order of the filter, and the application it will be used in (audio, communications, sensor interface, etc.). If you are unsure a
What is the difference between active and passive filters, and which one do I need?
Passive filters use only resistors, capacitors, and inductors — they require no power supply but cannot provide gain. Active filters use op-amps along with passive components — they can amplify the signal and offer sharper roll-off with better performance at low frequencies. For most audio, sensor,
Do you perform Monte Carlo or component tolerance analysis?
Yes, Monte Carlo and component tolerance analysis is available in the Standard and Premium packages. This analysis shows how your filter performs when real-world component values vary from their ideal values — which is critical for ensuring your design works reliably in actual hardware, not just in
Can the filter design be directly used for PCB fabrication after simulation?
The simulation results and component values I provide are directly usable for PCB design. The LTspice schematic file includes all component values, part types, and connections. You or your PCB designer can use this as the reference netlist for layout.
