Electrically Long Antennas TRIZ Cases
- Monopole Balun Shell Layout to Suppress EM Radiation
A distal balun-shell arrangement on a monopole antenna cuts balun EM radiation and supports scalar longitudinal wave transmission.
- Partially Metallized Antenna Cavity for Narrowband Resonance Control
Selective cavity metallization suppresses narrowband resonances in planar antennas while preserving directional RF performance and stability.
- Cavity Filter Resonant Bar Mounting for Tolerance-Tuned Assembly
A stopper-guided resonant bar boss expands tuning tolerance in cavity filters, cutting post-processing cost and improving yield.
- Flexible Leaky-Wave Antenna Array Asymmetry for Broadside Gain
Asymmetric bent-stub folded LWAs on thin PET suppress open stopband, reduce mutual coupling, and keep broadside gain stable.
- Antenna Element Layout Using Stepped Substrate Thickness
A stepped-thickness substrate lets the radiation electrode keep suitable ground spacing, improving antenna bandwidth and return loss.
- Feed and Parasitic Antenna Spacing for Wider 3 dB Beamwidth
Matched parasitic antennas placed at tuned spacing from a single feed broaden 3 dB beamwidth and allow directivity adjustment in compact layouts.
- PCB Collinear Antenna Array Feeding for Stable Omnidirectional Radiation
Printed phase-delayer traces on a dielectric plate control feed phase and amplitude to widen bandwidth, cut sidelobes, and stabilize downtilt.
- Phase Lag Cell Antenna Planar Reflector Phase Compensation
A phase lag cell uses L-shaped patterns and adjustable stubs to compensate for reflected wave phase differences in planar antenna structures.