Fractal Electrodynamics Improves Kokh Antenna Bandwidth
In fractal electrodynamics, fractal geometry is combined with electromagnetic theory in order to investigate a new class of radiation, propagation, and scattering problems. When fractals are applied to antenna elements, the result is smaller resonant ...
Real-Time Spectrum Analyzers Handle Advanced Radar Measurements
Today's advanced radars are notoriously hard to test. Simply put, the radar is beyond the scope of most standard measurement equipment. To simplify diagnostic troubleshooting and production test for radar applications, Tektronix, Inc. (Beaverton, OR) has ...
Economy Spectrum Analyzers Span 9 kHz To 20 GHz
In the past, less-costly microwave spectrum analysis came at the price of some performance. Yet the MS271xB family of microwave spectrum analyzers vows to provide high performance at an affordable price. The three models feature 1-Hz-to-3-MHz ...
100-W GaN-On-Si Transistor Targets WiMAX
The market for 2.5-GHz WiMAX solutions is growing rapidly, thereby inspiring a legion of new products. One example is a 28-V, 100-W gallium-nitride (GaN), high-electron mobility transistor (HEMT). The NPT25100 GaN-on-silicon (Si) power transistor is ...
TCXO Delivers Stability To 7 x 108
To satisfy applications that require excellent stability, almost no heat dissipation, and no warmup time, a microprocessor-controlled temperature-compensated crystal oscillator (TCXO) has been spawned. The T1220 offers oven-controlled-like ...
FSS Design Concept Uses Silicon As Switch Substrate
Usually, a frequency-selective surface (FSS) comprises one or more screens with two-dimensional periodic patterns, which are generated by a unit cell containing metallic patches or apertures. Now, a design composed of a metallic cross-dipole ...
Active Doubler Includes Booster Amplifier
A new active doubler is versatile enough to be either operated in a saturated power mode or backed off for linear applications. The model XX1001-QK accepts input signals from 18 to 21 GHz and provides output signals from 36 to 42 GHz with +25 ...
Amplifiers Perform Up To Standards Of WiMAX Output Devices
WiMax output devices are tested to verify the amplifier device's linearity as well as the fidelity of the signal that is being amplified. A test amplifier must boost WiMAX signals with sufficient power while maintaining original signal quality. ...
Power Dividers Extend From 380 To 2700 MHz
By leveraging a unique airline coaxial structure, a line of unequal power dividers manages to maintain a fixed split ratio over a 380-to-2700-MHz bandwidth. Ripple and insertion loss are kept to a minimum. Insertion loss, for example, is 1.36 dB ...
