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This paper introduces a novel reconfigurable SIW filter for 4G applications by using varactor diodes. This SIW filter consists of two floating islands with two via holes that connected with two varactor diodes. This method allows designing SIW filter with the tunable centre frequency with a constant absolute bandwidth. The filter is designed through the simulation on a standard printed circuit board...
An integrated high selectivity microstrip wideband bandpass filter with tunable notch response is presented in this paper. The bandpass filter is designed using 7th order short circuited stub filter. Then, the first short circuited stub is replaced with two sections of open circuited stub to exhibit the transmission zeros at lower/higher stopband. The integration with notch filter is realized using...
This paper presents design of wide-band bandpass filter with tunable notch response of wireless communication system. This project is to design a five order tunable band-pass filter by using optimum distributed high-pass integrated with Defected Micro-strip Structure (DMS). The wideband frequency is used from 3.1 GHz to 10.6 GHz. The insertion loss and return loss of this project is set to better...
A design of ultra wide-band microstrip bandpass filter with tunable notch response of wireless communication system is presented in this paper. The five order bandpass filter is designed using optimum distributed highpass integrated with Defected Microstrip Structure (DMS). The bandpass filter was designed at wideband frequency from 3.1GHz to 10.6GHz. The insertion loss and return loss of this project...
An integrated suspended stripline structure with defected stripline structure to produce simultaneous bandpass and notch response is presented and implemented in this paper. The bandpass filter was designed with cascading lowpass and highpass and produced the finite transmission zeros. The integration of SSS bandpass filter with DSS produced high selectivity and attenuation of notch response at resonant...
A novel design of an integrated single-mode substrate integrated waveguide (SIW) bandpass filter and microstrip patch antenna is presented. To realize the concept, an SIW filter and a patch antenna were combined using cascaded and multilayer technologies on a microstrip structure. The design is based on the single-mode rectangular cavity structure using TE101 mode for SIW filter and TM010 mode for...
This paper presents compact structure of bandstop filter with Defected Microstrip Structure (DMS) to produce a triple — band reject response. To prove the concept of the narrow notched DMS, the operating on centre frequency of 4.0 GHz is demonstrated and validated through simulation. The DMS structure is embedded in the middle of transmission lines in order to reject any undesired signals which may...
This paper presents compact structure of bandpass filter integrated with Defected Microstrip Structure (DMS) to produce band-pass and band reject response simultaneously. The filter design based upon λg0 short-circuited stubs structures of 7th degree. The narrow notch responses produced by DMS was introduced at a frequency of 5.2 GHz in order to reject any undesired signals which may interfere with...
This paper presents the investigation based upon resonant circuit approach to characterize a single-, dual- and quadruple-mode microstrip patch antenna from the lowpass prototype lumped element. This theoretical method is used to determine the coupling value for quad mode antenna design in order to obtain maximum bandwidth. To validate this concept, the quad mode antenna based upon an equivalent circuit...
This paper studies a wideband antenna of ice-cream cone structure and it is integrated with a rectifying circuit which has the potential to be used for RF energy harvesting system. The antenna is designed by using CST Studio Suite 2011 and fabricated on a double sided FR-4 printed circuit board using an etching technique. A single stage rectifying circuit is designed, simulated, fabricated and measured...
Microstrip slotted meander line antenna with a diverse number of meander slots is presented for 2.4 GHz of Wireless Local Area Network (WLAN) application. The proposed antenna comprises a rectangular microstrip patch element embedded with several numbers of meander slots in many positions. The parametric study is performed to investigate the characteristic of these microstrip patch antennas with different...
This paper studies the dual-band monopole antenna based on meander line structure for Global System for Mobile Communications (GSM) band applications, which is also has the potential to be used for RF energy harvesting. A meander line antenna with a conductor line is investigated during the design using the Computer Simulation Tool (CST) software. The antenna is fabricated on a double-sided FR-4 printed...
A planar dual-band monopole antenna is presented for Global System for Mobile Communications (GSM) band applications, which also have the potential to be used for energy harvesting system. The proposed antenna comprises of a ground plane at the back of the FR4 substrate and three microstrip lines which are physically connected with each other at the top surface of the substrate. The monopole antenna...
This paper presents the design of generalized Chebyshev lowpass filter (LPF) and integrated with Defected Stripline Structure (DSS) using Suspended Stripline Structure (SSS). The study involves circuit analysis to determine generalized Chebyshev responses with a transmission zero at finite frequency in order to produce a reduced number of elements values of prototype circuit. The LPF provides a cut-off...
This paper presents the transformation of generalized Chebyshev lowpass filter prototype to highpass filter using Suspended Stripline Structure (SSS) technology. The study involves circuit analysis to determine generalized Chebyshev responses with a transmission zero at finite frequency. The transformation of the highpass filter from the lowpass filter prototype provides a cutoff frequency of 3.1...
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