High Permittivity Dielectric Rod Waveguide as an Antenna Array Element for Millimeter Waves

Dielectric rod waveguide antennas of rectangular cross section have a number of advantages over conventional waveguide and horn antennas as an antenna array element. Dielectric rod waveguide antennas have relatively low cost, low losses, a broadband input match and a high packing potential. Additionally the radiation pattern of such antennas is almost frequency independent. In this paper the suitability of Sapphire rod waveguides for an antenna array is studied with simulations and prototype measurements at W band. Strong mutual coupling is observed when the elements are close to each other.

[1]  T. Sehm,et al.  Matching of a rectangular waveguide T junction with unequal power division , 1997 .

[2]  T. Sehm,et al.  A high-gain 58-GHz box-horn array antenna with suppressed grating lobes , 1999 .

[3]  G. Thiele,et al.  Antenna theory and design , 1981 .

[4]  D.V. Lioubtchenko,et al.  High permittivity dielectric rod waveguide antenna for 110-150 GHz , 2006, 2006 First European Conference on Antennas and Propagation.

[5]  Lorenz-Peter Schmidt,et al.  A Broadband Transition between Dielectric and Planar Waveguides at Millimeterwave Frequencies , 2003, 2003 33rd European Microwave Conference, 2003.

[6]  Jochen Weinzierl,et al.  Simulation and Measurement of Dielectric Antennas at 150 GHz , 1999, 1999 29th European Microwave Conference.

[7]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[8]  J. Richter,et al.  Dielectric rod antennas as optimized feed elements for focal plane arrays , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[9]  G. Stewart.  Optical Waveguide Theory , 1983, Handbook of Laser Technology and Applications.

[10]  Ke Wu,et al.  Co-layered integration and interconnect of planar circuits and nonradiative dielectric (NRD) waveguide , 2000 .

[11]  Sergey Dudorov,et al.  Rectangular dielectric waveguide and its optimal transition to a metal waveguide , 2002 .

[12]  J. Mallat,et al.  Low-loss sapphire waveguides for 75-110 GHz frequency range , 2001, IEEE Microwave and Wireless Components Letters.

[13]  Makoto Ando,et al.  An analysis of a waveguide T junction with an inductive post , 1991 .

[14]  Kai Chang,et al.  Broadband microstrip to dielectric image line transitions , 2000 .