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Design a custom Interdigital Bandpass Filter


Design a custom Interdigital Bandpass Filter

These filters are generally limited to frequencies above 200 MHZ

Antenna Calculator Links

Impedance Calculators
These calculators are used by Mantaro engineers and provided freely for your use

J-pole antenna design calculator, K4ABT
For 2 meters, the coil is 4 turns of coax at 5 inches in diameter

J Pole Antenna dimension calculator
The J Pole antenna is a simplified version of the Slim Jim antenna, using the same matching stub principle

Log periodic dipol array
Detail of the end-fed feed of a VHF log periodic dipole array

Log Periodic Dipole Array, LA8OKA
Log Periodic Dipole Arrays, or LPDA is a directional antenna with relatively constant characteristics across it's wide frequency range