Measuring antenna gain patterns is a critical part of evaluating the performance characteristics of an antenna under test. A software-defined radio (SDR) is an economical and flexible radio system ...

Radiation patterns for antennas can be utterly confusing, especially when presented in two dimensions, as they usually are. Fear not, [Hunter] has your back with 3D printed and color-coded radiation ...

The classic horn antenna undergoes some tough analysis and emerges with improvements that increase the frequency band to 3 GHz. The dual-ridged horn antenna (DRHA) is a workhorse in EMC and antenna ...

The testing will happen over some 69-square miles of San Francisco, Oakland and Pacifica. A helicopter will fly a grid pattern just 300 feet above the ground. The survey is expected to take five days, ...

It is convenient, therefore, to start this chapter with a description of the two basic radiation patterns of sound sources. Figure 18.1a shows an ideal point source that, as a function of distance, ...