Global Frequency Allocation from 1 kHz to 300 GHz
Technical overview of global spectrum allocation by the ITU and guidance on reading X-band allocation charts, interpreting frequency ranges, regions, and service uses.
RF & Wireless Technology
Wireless AP vs Wireless Router: Which Is More Stable
Compare wireless APs and wireless routers: functions (repeater, bridge, root/leaf), deployment trade-offs, enterprise features and costs, and AC+AP deployment guidance for hotels.
Antenna Performance Testing Amid Ionospheric Variability
Methodology for antenna comparison using WSPR and WSJT-X with SDR or Raspberry Pi: long-term weak-signal monitoring to collect repeatable performance data.
RF Communication System Components and Circuit Diagram
Overview of RF transmitter and receiver signal paths, with design guidance on power?drive amplification, stage isolation, IQ modulation and PA/LNA chain.
Low-Profile Dual-Polarized Dual-Beam Scanning Antenna Array
Low-profile dual-polarized reconfigurable antenna array using PIN-diode control and holographic modulation; 72-channel feed enables digital beam steering (±30° at 11 GHz).
