VHF suspended plate transmitter antenna design for DVB-T and DAB-T

Download
2018-06-01
Ali, Abdul
Ciydem, Mehmet
ALTINTAŞ, AYHAN
Koç, Seyit Sencer
This paper presents the design of stacked suspended plate transmitter antenna for digital video and audio broadcasting. Contrary to conventional dipole structures, we have designed the antenna in VHF band (174-254MHz) with two plates for wideband matching and design flexibility. Radiating primary plate has been excited by novel wideband modified inverted L-type probe. Parasitic secondary plate, and vertical wall between primary plate, and ground plane have been used for further matching and beamwidth adjustment. A bandwidth of 42% and gain of 8.5dBi is obtained at center frequency. Together with equivalent lumped element circuit model of designed antenna and experimental results for S-11, gain, and radiation pattern are presented. To the best of authors knowledge this is the first stacked suspended plate antenna achieving a record bandwidth of 42% in VHF band.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS

Suggestions

Reconfigurable slot antenna with fixed-fixed beam type RF MEMS capacitors
Erdil, Emre; Topallı, Kağan; Ünlü, Mehmet; İstanbulluoğlu, İpek; Temoçin, Engin Ufuk; Atasoy, Halil İbrahim; Bayraktar, Ömer; Aydın Çivi, Hatice Özlem; Demir, Şimşek; Koç, Seyit Sencer; Akın, Tayfun (2006-11-06)
This paper presents a reconfigurable dual-frequency rectangular slot antenna using MEMS technology. MEMS fixed-fixed beam type capacitors loading the antenna are actuated electrostatically to change the equivalent capacitance of the antenna which provides shift in the resonant frequencies. The measurement results show very good agreement with the simulation results and the resonant frequencies are shifted 1 GHz and 350 MHz continuously at around 8.5 GHz and 10.5 GHz, respectively.
Tunable dual-frequency RF MEMS rectangular slot ring antenna
Topalli, Kagan; Erdil, Emre; Aydın Çivi, Hatice Özlem; Demir, Şimşek; Koç, Seyit Sencer; Akın, Tayfun (Elsevier BV, 2009-12-01)
This paper presents the design, fabrication, and measurement of a novel, tunable, dual frequency rectangular slot antenna using RF MEMS technology. The antenna tuning is achieved by electrostatically actuated RF MEMS variable capacitors on a stub. Two different capacitor structures are implemented on the antenna: cantilever type and fixed-fixed beam type. The latter one is not sensitive to the stress on the structural layer and its measurement results agree well with the simulation results. Each antenna is ...
Dual-Polarization Wideband Sub-6 GHz Suspended Patch Antenna for 5G Base Station
Ciydem, Mehmet; Miran, Emre A. (Institute of Electrical and Electronics Engineers (IEEE), 2020-07-01)
This letter presents a simple, compact, low-cost, low-profile, dual-polarization, suspended patch antenna design to operate in 3.3-3.8 GHz band for 5G base stations. The proposed antenna comprises a main radiating patch, a secondary parasitic patch, modified L-probe feeds, and a vertical metal wall. The main patch is capacitively driven by two feeds for dual (+/- 45 degrees slant) polarization. The vertical metal wall is used to increase the port isolation. The parasitic patch also helps further improvement...
Beam Steerable Traveling Wave Meander Line Antenna Using Varactor Diode for X-Band Applications
Gokalp, Nihan; Aydın Çivi, Hatice Özlem (2008-07-11)
This paper presents a novel beam steerable meander line antenna with varactor diode for X-band applications. Beam steering has been achieved by loading the arms of the meander line antenna with varactor diodes. The capacitances of the varactor diodes have been controlled by DC bias voltage. Instead of varactor diodes, RF-MEMS variable capacitances can be used to scan the beam. Since the insertion loss of MEMS capacitances are small compared to loss of varactor diodes, use of MEMS capacitors will increase th...
RF MEMS Based Millimeter Wave Phased Array for Short Range Communication
Bayraktar, Omer; Kobal, Enis; Sevinç, Yusuf; Cetintepe, Cagri; Comart, Ilker; Demirel, Kaan; Topalli, Ebru Sagiroglu; Akın, Tayfun; Demir, Şimşek; Aydın Çivi, Hatice Özlem (2015-05-17)
This paper presents millimeter wave phased array antenna for short range communication applications at 35 GHz. The antenna array is formed by 1 x 16 microstrip antipodal tapered slot antennas each connected to RF MEMS phase shifters for beam steering. The simulation and measurement results of the single antenna element are presented and the phase shifter structure to be used in the array is described in the paper. RF MEMS phase shifters are fabricated using an in-house surface micromachining process.
Citation Formats
A. Ali, M. Ciydem, A. ALTINTAŞ, and S. S. Koç, “VHF suspended plate transmitter antenna design for DVB-T and DAB-T,” MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, pp. 1536–1546, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/33006.