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Showing 1-25 of 48,986 resultsfor "Index Terms":higher frequency band
"Index Terms":higher frequency band
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Frequency Band Ratio Analysis of Dual-Band Microstrip Grid Array Antennas
Guanghui Xu;Hong-Li Peng;Yaowei Hou;Meng-Lin Zhai;Yao-Ping Zhang;Wen-Yan Yin
2019 IEEE Asia-Pacific Microwave Conference (APMC)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
The frequency band ratio of dual-band microstrip grid array antennas (MGAA) is analyzed in this paper. Three dual-band MGAAs with different long side numbers are simulated to obtain the relationship between high and low operation frequency. Based on simulated results of the three antennas, high and low operation frequency ratio has a linear relationship with the low and high frequency resonant len...Show More
A Dual-Band High-Gain Resonant Cavity Antenna with a Single Layer Superstrate
In this communication, we present a novel design of a dual-band high-gain resonant cavity antenna (RCA) with single polarization. First of all, the theory of dual-frequency operation of conventional RCA with single superstrate is discussed. Next, we designed a feed system, for dual-band operation with single polarization and directional patterns, two T-shape slots in nonradiating edges of the micr...Show More
High frequency residue replication for audio compression
IET International Communication Conference on Wireless Mobile and Computing (CCWMC 2009)
Year: 2009 | Conference Paper |
High Frequency Residue Replication (HFRR) method for audio signal (including wideband speech) compression is introduced. The HFRR method takes the frequency domain audio signal as an input, processes it with frequency domain perceptual filter and gets the frequency residue; then the residue is divided into low frequency and high frequency parts; the high frequency residue can be represented by a s...Show More
A Novel High-Gain Dual-Band Antenna for RFID Reader Applications
Ahmed Toaha Mobashsher;Mohammad Tariqul Islam;Norbahiah Misran
A novel high-gain dual-band antenna for radio frequency identification (RFID) reader applications covering free ISM bands of 2.45 and 5.8 GHz is presented in this letter. The antenna is composed of a U-shaped copper strip with unequal arm, a printed rectangular ring, and the ground plane. A good impedance bandwidth of 120 MHz has been achieved from 2.37 to 2.49 GHz for the lower band, while the up...Show More
Dual Frequency Ring Patch AMC for RFID Car Detection Application
2024 IEEE 1st International Conference on Communication Engineering and Emerging Technologies (ICoCET)
Year: 2024 | Conference Paper |
This study is to examine the design and analysis of an artificial magnetic conductor (AMC) with dual band which is specifically suitable for RFID car detecting application. The goal of the proposed AMC is to meet the needs of modern RFID systems by functioning well at both Ultra High Frequency (UHF) (0.92 GHz) and High Frequency (HF) (2.4 GHz) frequencies. This study results include an examination...Show More
Dual Band Horn Antenna Using Frequency Selective Surface Superstrate
Muhammad Naeem Iqbal;Mohd Fairus Mohd Yusoff;Mohammad Kamal A Rahim;Mohamad Rijal Hamid;Zaharah Johari
2021 International Symposium on Antennas and Propagation (ISAP)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
The demand for high gain, multi band and reconfigurable type compact antennas are required for modern communication systems. In this paper, a unit cell design using U-shape with sequential rotations is presented to obtain dual passband frequency response. The unit cell design shows dual passband characteristics for the frequency range of 8-9.96 GHz and 11.53-14 GHz. In the complete high gain anten...Show More
A High Gain Dual-Band Stacked Patch Antenna with Resistors Loaded between Patches for RFID Applications
2021 IEEE 21st International Conference on Communication Technology (ICCT)
Year: 2021 | Conference Paper |
In this paper, a stacked patch antenna with UHF/ISM dual band was presented. The antenna is stacked in a dual-layer configuration that the lower-layer substrate is smaller than the upper-layer one, which can result in a reduced antenna Q quality factor. Two resistors having small resistance value are connected to a U-shaped and a rectangular patch, respectively. The two resistors have an effect on...Show More
A Novel Dual-Band Printed Monopole Antenna Based on Planar Inverted-Cone Antenna (PICA)
In this letter, a dual-band antenna based on planar inverted-cone antenna is proposed. Three pairs of slits are etched in the symmetrical circular arc sections of the inverted-cone-shaped structure to achieve the purpose of size reduction and dual-band performance. The frequency ratio and impedance matching can be adjusted flexibly by changing the parameters of the slits. The proposed antenna cove...Show More
Coupled stepped-impedance resonator (CSIR) based concurrent dual band filtering LNA for wireless applications
2015 IEEE MTT-S International Microwave and RF Conference (IMaRC)
Year: 2015 | Conference Paper |
Cited by: Papers (8)
Design and development of a concurrent dual-band filtering Low Noise Amplifier has been presented in this paper. Filtering LNA helps in the miniaturization and reduction in noise figure of the transceiver by eliminating an extra band pass filter (BPF) at the output. A CSIR based BPF structure has been used as output matching network. The dual-band bandpass filtering LNA drains 20-mA of current fro...Show More
Dual-Band Co-Aperture Planar Array Antenna Constituted of Segmented Patches
A novel dual-band co-aperture planar array antenna is proposed in this letter. The radiating elements operating at a higher frequency band are grouped and reused for the lower frequency band by adopting the concept of segmented patches. A total of 4 × 4 “H”-shaped patches, fed by two independent microstrip-feeding networks through rectangular slots, are taken as the radiating elements for a 4 × 4 ...Show More
Design and Analysis of a Slotted Rectangular Patch Antenna for Dual-Band Radar Applications in C and X Bands
Velu Alagumurugesan;Amit Birwal;Satya Sai Srikant;Mohammad Hannan;Saptarshi Ghosh
2024 9th International Conference on Communication and Electronics Systems (ICCES)
Year: 2024 | Conference Paper |
This work presents the design and analysis of a slotted patch antenna optimized for dual-band radar applications across the C-band and X-band frequency ranges. These frequency bands are essential for radar systems used in applications such as long-range surveillance, weather monitoring, and defense operations. The proposed antenna resonates at three distinct frequencies: 5.26 GHz and 7.62 GHz in t...Show More
Design of Dual Band Bandpass Filter for Reduced Insertion Loss and Comparison with Ultra Wide Band Filter
2022 2nd International Conference on Technological Advancements in Computational Sciences (ICTACS)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Dual-band bandpass filter is designed for reduced insertion loss and is compared with ultra-wide band filter. Materials and Methods: The design consists of a simple rectangular frame, constructed on a 1.6 mm thick commercially available Rogers TMM 10 material substrate. The G power of the dual-band bandpass filter is 80. Results: The dual-band bandpass filter insertion loss ranges from -1.5 dB to ...Show More
Isolation Enhancement in Dual-Band Monopole Antenna for 5G Applications
This brief presents a novel design of high-isolation dual-band antenna with a close distance for 5G applications. The proposed antenna consists of two symmetrical monopole antenna elements. Two resonance frequencies of the monopole antenna are independently tunable. The defected ground structure (DGS) and grounded branches are loaded to reduce mutual coupling of the lower band by changing the curr...Show More
Dual-Band Shared-Aperture Antenna With Bifunctional Metasurface
A dual-polarized dual-band antenna with a simple bifunctional metasurface (MS) is proposed. Previous studies often require various elements to design MSs, and most monofunctional MSs are designed to control one intrinsic property of electromagnetic wave. In contrast, the proposed MS uses only one type of element to realize dual functions. In the lower frequency band, the MS helps to excite the TM ...Show More
Dual-band Bandpass filter using SIW cavity with E-shaped DGS
Sambaiah Pelluri;Muhammed Fasil;Debasish Mondal;M. V Kartikeyan
2020 URSI Regional Conference on Radio Science ( URSI-RCRS)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
This paper presents the design of broadly separated second-order dual-band bandpass filter (BPF) using substrate integrated waveguide (SIW) cavity with E-shaped defected ground structure (DGS). The lower frequency passband is generated by back to back coupled DGSs. The back to back coupled E-shaped DGS gives two transmission zeros (TZs) which increase roll-off characteristics of first passband and...Show More
RFID Tag Design with high read range Performance for Dual band Applications in UHF Range
2022 IEEE 12th International Conference on RFID Technology and Applications (RFID-TA)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
A compact dual-band tag antenna operating in UHF-RFID bands proposed for European and U.S. is presented in this paper. The proposed tag antenna consists of a 9-shaped folded dipole as a radiating element coupled inductively to a spiral shaped loop network. Initially the proposed tag antenna resonates at the centre frequency of 895 MHz. The proposed tag antenna is coupled to inductive spiral loop t...Show More
3-D dual-band FSSs based on multiple square coaxial waveguides
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Year: 2019 | Conference Paper |
In this paper, a kind of dual-band three-dimensional (3-D) frequency selective surfaces (FSSs) based on multiple square coaxial waveguides (SCWs) are proposed. Through a simple design, two transmission poles are intrinsically produced by the square slot resonances in two SCW propagation paths, and another transmission pole is generated by a parallel-plate waveguide (PPW) propagation path. With the...Show More
27/38 GHz Dual-Band Subsampling PLL Design with Automated Frequency Calibration
2022 IEEE 31st Microelectronics Design & Test Symposium (MDTS)
Year: 2022 | Conference Paper |
This paper presents a 27/38 GHz dual-band frequency synthesizer with a 2-stage cascaded structure. The 1st stage is a 5.5 GHz integer-N charge pump PLL and the 2nd stage is a reconfigurable sub-sampling PLL for dual band frequency synthesis. By utilizing the sub-sampling PLL, it eliminates the frequency divider which leverages phase noise performance. An automated frequency calibration (AFC) loop ...Show More
Conceptual Design of Triple-Resonant Dipole Antenna with Distinctive Operational Modes
2020 International Conference on Microwave and Millimeter Wave Technology (ICMMT)
Year: 2020 | Conference Paper |
A dual-band, triple-resonant 1.5-wavelength dipole antenna having distinctive operational modes using the first three resonant, odd-order modes is presented. As the first step, the complementary dipole mode is excited by a loop structure. Then, the 2.5-wavelength mode is excited and perturbed downward the 1.5-wavelength one by bilateral stubs. In these ways, a dual-band, triple-resonant characteri...Show More
A Fully-Integrated Band-Switchable CMOS Power Amplifier for Wireless Applications
2021 IEEE 21st Annual Wireless and Microwave Technology Conference (WAMICON)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
This work, for the first time, proposes a fully integrated band-switchable RF power amplifier (PA) by using a novel approach towards switching the matching networks. In this approach, two matching networks which can be controlled by digital bits will provide the lower and higher operating frequency bands for the PA. In order to implement the proposed band-switchable PA, a robust RF switch is prese...Show More
Design of a High-order Dual-wideband Superconducting Filter Using Stepped-impedance Cross Structures
This letter presents a broad dual-band filter design with stepped-impedance cross structure (SICS). Four stubs (two low frequency and two high frequency ones) are connected to the rectangular patch in the center to construct the proposed SICS. The center frequencies of the high-band and low-band can be controlled independently. The patch leads to the even- and odd-mode split to act as two non-dege...Show More
A technique for the design of dual-band bandpass filters (DB-BPFs) having flexible frequency ratio is presented through the use of SIW resonators. This flexibility of frequency ratio is enabled by selecting appropriate length-over-width ratios (LoWR) of rectangular resonators. With a choice of two of the three resonant modes generated in the same cavity, named TE110, TE210 and TE120, DB-BPFs can b...Show More
A dual-functionality printed dipole array antenna is proposed in this study with a fan-beam property. An integrated balun structure cooperation with the dipole arms creates a resonance in the X-band for the antenna. Adding Single-Ring Split-Ring Resonator (SR-SRR) next to the feed line allows another resonance in the C-band. This way, a dual-band dipole array antenna with identical radiation prope...Show More
Wide Beamwidth Multi-Band Circularly Polarized Quadrifilar Helix Antenna with Multi-Coil Arms
2024 15th Global Symposium on Millimeter-Waves & Terahertz (GSMM)
Year: 2024 | Conference Paper |
A wide beamwidth multi-band quadrifilar helix antenna (QHA) is proposed. The proposed antenna operates in four bands, including GPS L1, XW-L and RDSS. This capability is achieved by introducing multiple resonances and incorporating a smaller parasitic QHA within the driven QHA. The external larger QHA has two helical arms, generating two closely band operating in a lower frequency band (1500-1700M...Show More
Dual Band Substrate Integrated Waveguide Based MIMO Antenna With DGS Technology
2024 32nd Telecommunications Forum (TELFOR)
Year: 2024 | Conference Paper |
This paper presents a 2-port dual-band SIW MIMO antenna for Ku-band (17.1–20.1 GHz), K and Ka band (23.1–27.5 GHz) applications. The proposed MIMO antenna is based on a cavity slot antenna based on a newly proposed DGS structure fed by a Y-junction power divider. The multimode high-order resonances are excited within the cavity resonator using four vias to obtain dual broadband performance. We opt...Show More
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