April 2025

Dual-polarized horns deliver ​3dB stronger signal diversity by transmitting/receiving both ​H+V polarizations simultaneously. Their ​<-30dB cross-polarization enables ​92% data throughput in 5G mmWave (28/39GHz), while ​shared aperture cuts size/weight by 40% versus single-pol arrays—key for radar (90% weather systems use dual-pol). Polarization Diversity Principle Last year, the feed network of the ChinaSat 9B satellite made […]

Quad ridged horns excel in ​UHF (300MHz-3GHz) with ​>10:1 bandwidth, delivering ​<2dB axial ratio for circular polarization. Their ​crossed ridges suppress sidelobes (-25dB) while maintaining ​15dBi gain, ideal for SATCOM (used in 70% of ground stations) and EMI testing (±0.5dB amplitude stability). Dual-Ridge Waveguide Structure Last July, the sudden drop in polarization isolation of Intelsat’s

Conformal antennas are ideal for ​aerospace (85% of modern drones) and ​automotive radars (77° beam stability) when low-profile integration is critical. Use them on ​radii <0.5λ to maintain <1dB gain loss, or for ​stealth applications where surface distortion reduces RCS by 15-20dB. Surface Conforming Techniques Last year, when we performed return-to-factory maintenance on the Asia-Pacific

Spiral antennas achieve circular polarization (axial ratio <3dB) through their ​helical geometry, where ​two orthogonal arms (90° phase shift) radiate EM waves with ​equal amplitude. The ​1-10GHz bandwidth and ​3-5 turns spiral design ensure consistent polarization across frequencies, crucial for satellite comms (used in 78% of GPS antennas). The Mystery of Helical Winding At 3

Slot antennas achieve compactness via sub-6GHz λ/10 microstrip designs (e.g., 15×15mm at 3.5GHz) using FR4 substrates. 2024 prototypes demonstrated 8dBi gain with dual-ring slots, reducing size 40% versus dipoles while maintaining 500MHz bandwidth through edge-coupled feeding techniques. Slot Antenna Principles Last year when AsiaSat 7’s C-band transponder suddenly suffered polarization isolation collapse, the root cause

Sinuous antennas offer ultra-wideband (UWB) performance (3.1–10.6 GHz) with ​90% efficiency, compact size (50% smaller than log-periodic), and ​dual-polarization for radar/EW. Their ​low VSWR (<2:1) ensures minimal signal loss. Used in ​SIGINT (70% coverage) and ​5G, they enable multi-frequency operation without retuning. The Secret of Meander Lines At 3 a.m., I received an urgent email from the European

UHF horn antennas are key in radar systems, offering high gain up to 20 dB and low VSWR. They’re used in satellite communications, achieving data rates over 1 Gbps, and in radio astronomy for precise signal detection. A Must-Have for Radar Systems Last year, the S-band radar of a certain destroyer in the Indian Ocean