Results 211 to 220 of about 837,318 (252)
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Dual-Mode Dual-Band Filter With Band Notch Structures
IEEE Microwave and Wireless Components Letters, 2010A novel approach for designing dual-mode dual-band bandpass filters is proposed and experimentally studied. By embedding a pair of slits in the square patch, the dual-band response is realized and one transmission zero is introduced between the two passbands.
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A dual-band implantable antenna design
2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014A dual-band implantable microstrip antenna design is proposed for MISC/ISM biomedical telemetry systems. The radiating layer of the antenna is comprised of two concentric square split-ring elements and a metallic pad placed between them. A shorting-pin is also used for miniaturization purposes directly connecting the outer ring element to the ground ...
Adnan Sondas +2 more
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Third‐order dual‐band filter with dual‐band admittance inverter
Microwave and Optical Technology Letters, 2010AbstractIn this article, stepped impedance resonator with dual‐band admittance inverter is proposed to design the dual‐band microstrip filter to operate at (2.4, 5.2) GHz and at (0.9, 2.3) GHz, respectively. The proposed dual‐band microstrip filter consists of stepped‐impedance resonators (SIRs) in shunt cascaded by dual‐band inverter.
Wei‐Ping Liu, Yu‐Wei Tung
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Dual-band, dual-polarized microstrip reflectarray antenna in Ku band
2012 Loughborough Antennas & Propagation Conference (LAPC), 2012This paper presents a dual-band single layer printed reflectarray antenna with closely separated frequency bands centered at 12 and 14 GHz. The novel unit cell, with which the antenna has been designed, consists of a printed cross-dipole and a split ring element mounted on the same substrate, providing the antenna with dual polarization capability at ...
Hamed Hasani, Custodio Peixeiro
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Optical Engineering, 2013
A dual-band optics design for disjoint spectral bands and for a cooled FPA sensor, sensitive to both bands, is presented. The use of special optical splitting mechanisms enables matching the optical paths of both bands to the same sensor. Reasonable optical performance and good registration were achieved for dual bands such as 8 to 12 μm together with ...
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A dual-band optics design for disjoint spectral bands and for a cooled FPA sensor, sensitive to both bands, is presented. The use of special optical splitting mechanisms enables matching the optical paths of both bands to the same sensor. Reasonable optical performance and good registration were achieved for dual bands such as 8 to 12 μm together with ...
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Novel dual‐band dual‐prototype bandpass filter
Microwave and Optical Technology Letters, 2014ABSTRACTThis article presents the novel dual‐band dual‐prototype bandpass filter. The corresponding lowpass prototypes of the first and second passbands of the proposed filter are controllable and can be specified to be different at the outset. The dual‐band resonator is realized by trisection stepped‐impedance resonator.
Sun, Xiaofeng, Tan, Eng Leong
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New dual-band band-pass filter design with enhanced dual-band skirt characteristics
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013A new frequency transformation concept is proposed to overcome the skirt characteristic of dual-band bandpass filters (BPF) caused by the conventional frequency transformation method. The new frequency transformation incorporates an extra frequency parameter to achieve additional rejection function in the high-frequency stop-band.
Juseok Bae, Cam Nguyen
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Dual band dual circular ring monopole antenna
2015 Twenty First National Conference on Communications (NCC), 2015In this paper, a dual band planar dual circular ring monopole antenna is designed and fabricated on 1.6mm thick FR4 substrate. The measured bandwidth of the antenna is from 0.82–1.25 GHz and 1.65–2.79 GHz for return loss < −10dB. This antenna finds its application in CDMA, GSM900, GSM1800, 3G, 4G and Wi-Fi bands.
Amrita Mardikar +3 more
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High isolation dual band dual polarized antenna
6th International Symposium on Telecommunications (IST), 2012A new configuration of the dual-band and dual-polarized antenna is presented, which is fed by aperture coupling for the existing mobile communication systems working over 870–960 MHz (GSM) and 1710–2180 MHz (DCS/UMTS) frequency band. In this paper DU band stands for DCS/UMTS band. Measurement results show that the proposed antenna yields good broadside
Mohsen Kaboli +3 more
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A dual band gap slotted patch electromagnetic band gap for dual band microstrip antenna
2008 IEEE International RF and Microwave Conference, 2008This paper described the design of the dual band gap slotted patch EBG structure. By introducing double L slot into each EBG patch, a smaller rectangular patch has been introduced in each EBG patch resulting to the achievement of the second stop band frequency. The comparison between mushroom EBG structures has been investigated.
Osman Ayop +2 more
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