Novel Cross-Type Network for Wide-Tuning-Range Reconfigurable Multiband Antennas

This paper presents a cross-type network design with a novel reconfigurable functionality to realize a tunable multiband antenna. By attaching a reconfigurable network at the feeding port of a broadband antenna, multi-input impedance adjustment enables the production of multimatching operating bands. Each band can be independently controlled by a single component with a considerably wide tuning range and high selectivity. The experiments in this study involved using an ultra-wideband (UWB) antenna connected to the proposed cross-type network. The tunable antenna operates in a dual band offL(1.39 to 2.34 GHz) andfH(2.1 to 3.6 GHz) with tunable frequency ratios of 168% and 132%, respectively. The average bandwidths atfLandfHare approximately 50 MHz and 148 MHz, respectively, implying narrowband operation. The measured radiation pattern revealed that the tunable antenna exhibits a nearly omnidirectional radiation pattern at both 1.8 and 3.5 GHz. The network circuit architecture can be extended to the multiband function type by adopting this matching approach. The amount of shunt matches determines the number of operation bands.

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Dual band, low profile and compact tunable frequency selective surface with wide tuning range

Journal of Applied Physics ◽

10.1063/1.5023449 ◽

2018 ◽

Vol 123 (23) ◽

pp. 235301 ◽

Cited By ~ 8

Author(s):

Yazdan Rahmani-Shams ◽

Sajad Mohammd-Ali-Nezhad ◽

Ali Nooraei Yeganeh ◽

Seyed Hassan Sedighy

Keyword(s):

Tuning Range ◽

Frequency Selective Surface ◽

Dual Band ◽

Wide Tuning Range ◽

Low Profile ◽

Frequency Selective ◽

Tunable Frequency

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Dual-band ultra-wide tuning range CMOS voltage-controlled oscillator

Electronics Letters ◽

10.1049/el:20061147 ◽

2006 ◽

Vol 42 (21) ◽

pp. 1215 ◽

Cited By ~ 4

Author(s):

B. Çatlı ◽

M. Hella

Keyword(s):

Tuning Range ◽

Dual Band ◽

Voltage Controlled Oscillator ◽

Wide Tuning Range

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Dual Band Notch, Compact, Low profile, Hybrid Ultra Wideband RDRA

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.a1765.1010120 ◽

2020 ◽

Vol 10 (1) ◽

pp. 166-169

Keyword(s):

Radiation Pattern ◽

Dielectric Resonator ◽

Surface Current ◽

Wide Band ◽

Ultra Wideband ◽

Dual Band ◽

Ultra Wide Band ◽

Impedance Bandwidth ◽

Dielectric Resonator Antenna ◽

Ground Structure

This paper presents a novel, compact Ultra Wide Band , Asymmetric Ring Rectangular Dielectric Resonator Antenna (ARRDRA), which is a unique combination of Thin Dielectric Resonator (DR), Fork shape patch and defective ground structure. The base of the proposed antenna is its Hybrid structure, which generates fundamental TM, TE and higher order modes that yields an impedance bandwidth of 119%. Proposed antenna provides a frequency range from 4.2 to 16.6 GHz with a stable radiation pattern and low cross polarization levels. Peak gain of 5.5 dB and average efficiency of 90% is obtained by the design. Antenna is elongated on a FR4 substrate of dimension 20 x 24x 2.168 mm3 and is particularly suitable for C band INSAT, Radio Altimeter, WLAN, Wi-Fi for high frequencies. Ease in fabrication due to simplicity, compactness, stable radiation pattern throughout the entire bandwidth are the key features of the presented design. Inclusion of Defective ground structure and asymmetric ring not only increases the bandwidth but also stabilize the gain and efficiency due to less surface current. Presented design launch an Ultra Wide Band antenna with sufficient band rejection at 4.48-5.34 and 5.64-8.33 GHz with stable radiation pattern and high gain.

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