The design of a new L-band antenna for DLR’s airborne synthetic aperture radar system (E-/F-SAR) is presented. Beside operations in L-band new components for a system upgrade were developed. These components are introduced. Special interest of this paper is the development of the dual-polarized L-Band antenna with enhanced bandwidth of 150MHz. The antenna feed network is equipped with 2bit hybr...

This paper presents a multiband folded loop antenna for smart phone applications. The proposed antenna with a symmetric loop pattern generates four resonance modes in the design bands. The current distributions of the excited resonance modes are analyzed to confirm the mode characteristic. Using a pair of tuning elements near the feed port, the impedance bandwidth is broadened to cover GSM850/G...

Abstract – A Novel Co-Planar Wide Band Slot Antenna is proposed in this paper. In this paper a new design technique for enhancing bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This proposed antenna has been excited by probe feed technique. On a thin FR –4 lossy substrate this antenna achieves 1.87 GHz impedance bandwidth in the range of 2.24 4.1...

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Aki Karttunen Name of the doctoral dissertation Millimetre and submillimetre wave antenna design using ray tracing Publisher School of Electrical Engineering Unit Department of Radio Science and Engineering Series Aalto University publication series DOCTORAL DISSERTATIONS 127/2013 Field of research Radio Engineering Manuscript...

A new compact printed tri-band antenna for WLAN/WiMAX applications is presented. The proposed antenna consists of three inverted L-shaped strips whose geometry looks like a “bent fork”. These strips are attached to the feed line through a horizontal strip. By optimizing the geometries of the inverted L-shaped strips, distinct resonant points can be effectively created for different frequency ba...

The proposed antenna design is a modified Eshape patch antenna truncated at the edges, yielding circular polarization. The antenna operates at multiple frequencies: 2.82 GHz, 3.9 GHz, 4.75 GHz and 6.2 GHz suitable for WLAN and WiMAX applications. The antenna is constructed using a single layer glass epoxy substrate, having dielectric constant εr = 4.3 and loss tangent tan δ =0.001. A co-axial f...

The variation of circular microstrip antenna, a Sectoral microstrip antenna is discussed. The detail analysis to study the effects of antenna parameters like, feed point location and the substrate thickness for Sectoral angle increasing from 270 to 340 on the patch first four resonant modes is presented. The variation in angle tunes the spacing between three patch resonant modes which yields op...

This paper describes the design of Rectangular Microstrip Patch Antenna with Triangular Slot (RMPATS) at a frequency of f = 2. 4 GHz. The proposed antenna has been designed by introducing a triangular slot in the rectangular patch. The FR4-Epoxy with relative permittivity 4. 4 and height 1. 6 mm is used as substrate material. Antenna is fed by coaxial probe feed. The proposed antenna have accep...

381 Abstract— A monopole triangular shaped, broadband, compact microstrip patch antenna with shorting pin is presented in this paper. By defecting the ground plane bandwidth of 38.7% with respect to center frequency of a Microstrip patch antenna has been achieved which can be used for WLAN application. 82.4% size reduction has also been achieved by using shorting pin of a microstrip patch anten...

Different approaches for the transition between two coplanar waveguides of different characteristic impedances have been investigated to improve the efficiency of both feeding network and the antenna element of an antenna system operating in the Xband. Return loss, effect of feed line shaping and parametric study are presented with each approach. The outcomes of this study leads to efficient tr...