Title
Compact Low-Loss Integration Of High-Q 3-D Filters With Highly Efficient Antennas
Keywords
Bandpass filter; cavity resonator; packaging; slot antenna; time-domain (TD) analysis; waveguide
Abstract
A novel synthesis technique to integrate high-Q 3-D filters with highly efficient slot antennas is presented in this paper. This technique allows for compact integration of 3-D filters and antennas with very high antenna efficiency and significantly reduced form factor of integrated RF front ends. Prototype four-pole Chebyshev cavity filters integrated with slot antennas are demonstrated at X-band using both coaxial and coplanar waveguide feeding. The center frequency and fractional bandwidth of the filter/antenna system with coaxial feeding are 9.96 GHz and 6.0%, respectively. Due to the high-Q factor (∼850) of the cavity resonator, the efficiency of this filter/antenna system is measured to be 89%, compared with the measured S21 of -0.5 dB (89%) for an identical filter. This means a near 100% efficient slot antenna is achieved within this integrated filter/antenna system. The measured impedance matching, efficiency, gain, and radiation pattern closely agree with simulation results. Equivalent-circuit models of the integrated filter/antenna system are developed and verified with full-wave simulations. This technique can be applied for filter/antenna integration in all microwave, millimeter-wave, and submillimeter-wave frequency regions. © 2011 IEEE.
Publication Date
4-1-2011
Publication Title
IEEE Transactions on Microwave Theory and Techniques
Volume
59
Issue
4 PART 1
Number of Pages
857-865
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1109/TMTT.2010.2100407
Copyright Status
Unknown
Socpus ID
79954625486 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/79954625486
STARS Citation
Yusuf, Yazid and Gong, Xun, "Compact Low-Loss Integration Of High-Q 3-D Filters With Highly Efficient Antennas" (2011). Scopus Export 2010-2014. 3445.
https://stars.library.ucf.edu/scopus2010/3445