IET Digital Library: Broadband meanderline slot spiral antenna A new broadband, cavity-backed slot spiral antenna is proposed. It combines variable growth rates at the centre region for improved high band radiation, with ... A BROADBAND VHF-L BAND CAVITY-BACKED SLOT SPIRAL ANTENNA SLOT SPIRAL ANTENNA ... Meanderline antenna A5: ... significant military and commercial interest in extremely broadband antennas that can be
Design of bandwidth-enhanced circularly polarized (CP) patch antenna using ... due to the annular slot surrounding the meander line of each EML element and the ..... “Artificial magnetic metamaterial design by using spiral resonators,” Phys.
PIER Online - Design and Fabrication of Wideband Archimedean ... DESIGN AND FABRICATION OF WIDEBAND ARCHIMEDEAN SPIRAL ANTENNA BASED ULTRA-LOW COST ``GREEN'' MODULES FOR RFID SENSING AND WIRELESS APPLICATIONS By Y. Amin, Q. Chen, L.-R. Zheng, and H. Tenhunen. Full Article PDF (625 KB) Abstract: A SPIRAL SHAPED SLOT AS A BROAD-BAND SLOT- TED WAVEGUIDE ... slot spiral antenna to explain its broad-band characteristics. The total electrical e–ciency and peak realized gain of this slot were compared with those of a rectangular slot which is the current slot shape used in SWASS. The gain patterns from an optimised Antennas: Cavity-Backed Slot Antennas - Antenna Theory
miniaturization of a broadband spiral using readily available high-contrast dielectrics ..... 4.3 A two arm square Archimedean ”slot” type spiral and geometrical pa- ..... and the meander-line antenna are the two most common examples [10,11].
Introduction - Inside Mines A spiral antenna is a broadband element exhibiting circular polarization: right- ... the radiating zone of a center fed spiral antenna is limited to a ... “Broadband meanderline slot spiral antenna,” Microwaves, Antennas and Propagation, IEE Proceedings, vol 149, No. 2, pp ... NOVEL RECTANGULAR SPIRAL ANTENNAS - Ana Sayfa NOVEL RECTANGULAR SPIRAL ANTENNAS A Thesis Submitted to ... antennas can be used as a separate component antenna or as broadband feeds for reflector type dish antennas. ... for slot versions of geometry B and C to prove large impedance bandwidth of the antennas. Measured wideband S11 results were compared with those of simulation
A new broadband, cavity-backed slot spiral antenna is proposed. It combines variable growth rates at the centre region for improved high band radiation, with ...
Performance of an Ultrawide-Band Ceramic-Loaded Slot Spiral,”. IEEE Trans. Antennas and Propagat, Vol. 53, No. 7, July 2005, pp. 2193-2199. The axial ratio comparison of proposed antenna with 3 turns and Archimedian spiral antenna with 5 turns.  Filipovic D.S., and Volakis J.L., “Broadband Meanderline Slot Spiral Antenna,”. IEE Proc Spiral Antennas - Antenna Theory Spiral antennas belong to the class of "frequency independent" antennas; these antennas are characterized as having a very large bandwidth.The fractional Bandwidth can be as high as 30:1. This means that if the lower frequency is 1 GHz, the antenna would still be efficient at 30 GHz, and every frequency in between. US5815122A - Slot spiral antenna with integrated balun and A slot spiral antenna with a planar integrated balun and feed. The slot spiral is produced using standard printed circuit techniques and comprises a dielectric substrate having a conductive layer which is etched to form the radiating slot spiral. An integrated microstrip feed is included to provide a balanced feed to the slot spiral. A slot spiral in carbon-fibre composite laminate as a
YO3DAC - Printed and Microstrip Antennas - QSL.net
design and fabrication of wideband archimedean spiral antenna ... 13 Aug 2012 ... of the planar Archimedean spiral antenna, due to the use of paper ..... Filipovic, D. S. and J. L. Volakis, “Broadband meanderline slot spiral ... Design of UWB Planar Monopole Antennas with Etched Spiral Slot ... 16 Sep 2015 ... The proposed structure of spiral slot loaded antenna with single ... The reference antenna (without slot) exhibits a bandwidth of 7.84 GHz ..... UWB antenna based on complementary meander line SRR,” Electronics Letters, vol. YO3DAC - Printed and Microstrip Antennas - QSL.net Many of the antennas presented below relate to areas in which a wide variety of patents have been ... Comparison of Microstrip Patch and Slot Antennas ... Broadband Rectangular Slot Antenna for 1.8GHz to 5.8GHz ... Spiral Antenna for 433MHz and 916MHz ... USB Stick Size Printed Meander-Line Antenna for 2.4 GHz.
size reduction of an uwb low-profile spiral antenna - OhioLINK ETD