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Hjalti H. Sigmarsson
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High-Q fully reconfigurable tunable bandpass filters
H Joshi, HH Sigmarsson, S Moon, D Peroulis, WJ Chappell
IEEE transactions on microwave theory and techniques 57 (12), 3525-3533, 2009
2172009
Highly loaded evanescent cavities for widely tunable high-Q filters
H Joshi, HH Sigmarsson, D Peroulis, WJ Chappell
2007 IEEE/MTT-S International Microwave Symposium, 2133-2136, 2007
1552007
One-step electrodeposition of copper on conductive 3D printed objects
MJ Kim, MA Cruz, S Ye, AL Gray, GL Smith, N Lazarus, CJ Walker, ...
Additive Manufacturing 27, 318-326, 2019
922019
Substrate integrated evanescent-mode cavity filter with a 3.5 to 1 tuning ratio
S Moon, HH Sigmarsson, H Joshi, WJ Chappell
IEEE microwave and wireless components letters 20 (8), 450-452, 2010
912010
New bandstop filter circuit topology and its application to design of a bandstop-to-bandpass switchable filter
J Lee, EJ Naglich, HH Sigmarsson, D Peroulis, WJ Chappell
IEEE transactions on microwave theory and techniques 61 (3), 1114-1123, 2013
692013
Tunable inter-resonator coupling structure with positive and negative values and its application to the field-programmable filter array (FPFA)
J Lee, EJ Naglich, HH Sigmarsson, D Peroulis, WJ Chappell
IEEE transactions on microwave theory and techniques 59 (12), 3389-3400, 2011
562011
Tunable high Q narrow-band triplexer
H Joshi, HH Sigmarsson, S Moon, D Peroulis, WJ Chappell
2009 IEEE MTT-S International Microwave Symposium Digest, 1477-1480, 2009
552009
Band-reconfigurable filter with liquid metal actuation
SN McClung, S Saeedi, HH Sigmarsson
IEEE Transactions on Microwave Theory and Techniques 66 (6), 3073-3080, 2018
432018
Intersecting parallel-plate waveguide loaded cavities for dual-mode and dual-band filters
EJ Naglich, J Lee, HH Sigmarsson, D Peroulis, WJ Chappell
IEEE transactions on microwave theory and techniques 61 (5), 1829-1838, 2013
432013
High Q narrow-band tunable filters with controllable bandwidth
H Joshi, HH Sigmarsson, S Moon, D Peroulis, WJ Chappell
2009 IEEE MTT-S International Microwave Symposium Digest, 629-632, 2009
372009
Reconfigurable-order bandpass filter for frequency agile systems
HH Sigmarsson, J Lee, D Peroulis, WJ Chappell
2010 IEEE MTT-S International Microwave Symposium, 1756-1759, 2010
362010
Tunable, high-Q, substrate-integrated, evanescent-mode cavity bandpass-bandstop filter cascade
S Saeedi, J Lee, HH Sigmarsson
IEEE Microwave and Wireless Components Letters 26 (4), 240-242, 2016
352016
Design and fabrication of orthogonal-mode transducer using 3-D printing technology
H Saeidi-Manesh, S Saeedi, M Mirmozafari, G Zhang, HH Sigmarsson
IEEE Antennas and Wireless Propagation Letters 17 (11), 2013-2016, 2018
292018
The “Horus” radar—an all-digital polarimetric phased array radar for multi-mission surveillance
RD Palmer, CJ Fulton, J Salazar, H Sigmarsson, M Yeary
99th American Meteorological Society Annual Meeting, 2019
272019
In-situ control of tunable evanescent-mode cavity filters using differential mode monitoring
HH Sigmarsson, A Christianson, H Joshi, S Moon, D Peroulis, ...
2009 IEEE MTT-S International Microwave Symposium Digest, 633-636, 2009
272009
Tunable evanescent-mode cavity filter
H Joshi, HH Sigmarsson, D Peroulis, WJ Chappell, X Liu
US Patent 9,024,709, 2015
262015
Direct 3-D printing of nonplanar linear-dipole-phased array antennas
M Mirmozafari, S Saeedi, H Saeidi-Manesh, G Zhang, HH Sigmarsson
IEEE Antennas and Wireless Propagation Letters 17 (11), 2137-2140, 2018
242018
Design methodology of N-path filters with adjustable frequency, bandwidth, and filter shape
MN Hasan, S Saeedi, QJ Gu, HH Sigmarsson, X Liu
IEEE Transactions on Microwave Theory and Techniques 66 (6), 2775-2790, 2018
242018
Novel coupling matrix synthesis for single-layer substrate-integrated evanescent-mode cavity tunable bandstop filter design
S Saeedi, J Lee, HH Sigmarsson
IEEE Transactions on Microwave Theory and Techniques 63 (12), 3929-3938, 2015
232015
Power handling of high-Q evanescent-mode tunable filter with integrated piezoelectric actuators
K Chen, HH Sigmarsson, D Peroulis
2012 IEEE/MTT-S International Microwave Symposium Digest, 1-3, 2012
232012
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