A novel 10MHz-4GHz Wilkinson power divider using lumped compensation elements

Abstract

Future cable television (CATV) and satellite-television receiver systems require the development of wideband power dividers (PDs) covering a few megahertz to a few gigahertz. Conventional PDs designed using either distributed circuits or lumped elements cannot accomplish this purpose. In this paper, a novel ultrawideband wideband PD is developed with a combined design of both the distributed transmission line Wilkinson power divider (WPD) and the lumped compensation elements. The WPD is designed at 2.2 GHz with a small configuration, while the loaded chip resistors and capacitors compensate its performance well at frequencies down to megahertz. The configuration and design method of the proposed divider is described, and a microstrip WPD is fabricated and measured. The simulated and measured responses of the WPD agree well over 10 MHz ~ 4.0 GHz, and both satisfy well the design specifications. To our knowledge, this is the first report of a WPD that covers an ultrawide frequency band from a few megahertz to a few gigahertz.

Ultra-Wideband and High-Gain Vivaldi Antenna with Artificial Electromagnetic Materials

“…As the designed Vivaldi antenna requires four-port feeding, a wideband Wilkinson power divider [ 23 ] was designed, which can keep below −10 dB and port isolation below −15 dB within the 0.9–4 GHz bandwidth. First, a wideband Wilkinson power divider is designed for one-to-two power division, and then, the three Wilkinson power divider ports are connected together using coaxial lines to achieve the requirement of one-to-four power division.…”