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On-chip EM modeling at mm-wave frequencies requires design methods that incorporate the layout and verification macros of IC EDA tools with parameterized EM CAD. We propose a novel, flexible design flow for 3D EM modeling of BEOL structures that allows for parameterized design of BEOL structures using Pcell elements as seed, thereby reducing the time required to generate the full simulation model...
The use of multiple antenna system for wireless communication has gained huge interest during the last decade. Main purpose of this work is to replace the requirement of single antenna based mechanical rotary arrangement and duplexer from conventional tracking system in RADAR applications with multiple antenna based system (MAS). The proposed MAS structure in single input multiple output (SIMO) configuration,...
This paper presents the comparative design of a CMOS cross-coupled oscillator in class-B and Class-C topology, respectively using film bulk acoustic resonator (FBAR) in order to improve the phase noise and power consumption. The design issues such as low frequency stability, phase noise issues and optimization method of FBAR on a CMOS wafer will will be discussed. Experiment results and performance...
More and more CMOS integrated circuits operating at terahertz (≥ 0.1 THz) frequencies have been reported recently. However, design environments and techniques are not as well established as for RF CMOS circuits. This paper reviews our recent progress in device characterization and modeling for terahertz CMOS design. Finally, as an application example of terahertz CMOS design, low-power high-speed...
This paper presents the design, simulation and fabrication of a frequency selective surface (FSS) based unit cell structure over a flexible polyimide film for the effective electromagnetic absorption. The proposed FSS structure is designed using the splitted rings, where the unit cell dimensions are selected for effective EM absorption in the X band. The simulated results show absorption of 99.25%...
In this paper a modified cross dipole Frequency Selective Surface (FSS) is utilized to increase the gain of a Circular Polarized (CP) antenna. The antenna is a Coplanar Waveguide (CPW) fed structure with modified Z-shaped radiating element. The FSS is used as a reflector. It is used to enhance the Right Handed Circular polarization (RHCP) gain and making antenna nearly unidirectional. The overall...
In this paper, a novel time domain RF imaging technique is presented for online monitoring of moving objects over conveyor belts. The proposed technique provides the knowledge of electrical properties i.e., relative permittivity and thickness of material under test (MUT), in addition to the structural properties i.e., size and shape of the interrogated object. The foremost improvement of the proposed...
Breast cancer detection depends on accuracy of complex permittivity profile reconstruction in breasts. In microwave imaging of breasts, large size matrix is inverted to reconstruct complex permittivity profile of breast models. In this paper, computation time of matrix inversion is reduced by exploiting symmetry present in breast models. Group theory is a powerful tool to exploit symmetry which also...
Nowadays there is a stringent need to develop an absorber that can provide good absorption with wide bandwidth and lower coating thickness. In this study, a critical analysis has been carried out over three different kind of absorbing structures, i.e., double layer, fractal Frequency Selective Surface (FSS) integrated, and fractal FSS sandwiched absorbers for achieving good absorption with thickness...
This paper presents design & development of a 47 GHz, single-ended, low conversion loss, Monolithic Microwave Integrated Circuit (MMIC) frequency tripler using 0.15pm GaAs/InGaAs/AlGaAs pseudomorphic High Electron Mobility Transistor (pHEMT). Fabricated chip size is 1.5mm × 2.0mm. The successful first run fabrication of the MMIC has achieved 3.5 dB of conversion loss at 47 GHz for 5 dBm of input...
This paper presents the simulation study of multiple-input-multiple-output (MIMO) antenna using two castor leaf-shaped quasi-self-complementary elements for broadband applications. Each antenna element having conducting patch and complementary slot along with in-built matching circuit is fed using coplanar waveguide (CPW) which makes the antenna single-sided. The optimal design of the proposed MIMO...
A Meander Line Uniplanar EBG based Multiband antenna using the concept of defected ground plane is presented, fabricated, tested and verified. The antenna operates at the WLAN (2.4 GHz and 5.2 GHz) as well as WiMAX band (3.6 GHz). The antenna is fabricated on the ROGERS RT 5880 substrate having relative permittivity as 2.2 and loss tangent 0.0009. The antenna maintains its gain and radiation patterns...
In recent year, the demand for multiple frequency band antennas has increased tremendously for a number of RF and microwave applications. The advantage of multi band antenna is that the same device can be used for different frequency bands in order to cater to multiple services. In this paper, a triple band antenna on a very thin substrate with single side cladding is designed and developed, which...
In this paper, design of Substrate Integrated Waveguide (SIW) broadband unequal power divider is presented. A simple design technique to implement the unequal power division while maintaining a broad bandwidth is achieved only by changing the length of the step in the coupling region and H-plane matching step at the input while keeping all other dimensions same. A set of design curves are also presented...
In this paper a Whip monopole antenna covering 30–100MHz is designed. The antenna is first simulated using Electromagnetic Simulation software (CST Microwave Studio™). Then it is validated with the measurement on fabricated antenna. The conventional quarter wavelength monopole antenna is a narrow band antenna with bandwidth of the order of 5 to 10 percent of its centre frequency for VSWR less than...
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