The use of circular waveguide radiators electromagnetically coupled to a stripline distribution network is proposed in this work as wideband hybrid array configuration suitable for millimeter-wave applications. The adopted excitation mechanism avoids the use of transition components from stripline to radiators, which are responsible for loss mechanisms affecting similar configurations in literature. The effectiveness of the hybrid approach is first validated on a reduced frequency X-band prototype. Then, a Ka-band array design is presented and experimentally tested to prove the wideband radiation behavior. A radiation efficiency of about 60 percent is also demonstrated on the Ka-band prototype.
Wideband Hybrid Array Concept for Millimeter-wave Applications
COSTANZO, Sandra;DI MASSA, Giuseppe
2009-01-01
Abstract
The use of circular waveguide radiators electromagnetically coupled to a stripline distribution network is proposed in this work as wideband hybrid array configuration suitable for millimeter-wave applications. The adopted excitation mechanism avoids the use of transition components from stripline to radiators, which are responsible for loss mechanisms affecting similar configurations in literature. The effectiveness of the hybrid approach is first validated on a reduced frequency X-band prototype. Then, a Ka-band array design is presented and experimentally tested to prove the wideband radiation behavior. A radiation efficiency of about 60 percent is also demonstrated on the Ka-band prototype.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.