Self-Complementary Circular Disk Antenna for Uwb Applications

Abstract

Abstract-In this paper, the self-complementary principle has been applied to develop the traditional planar monopole antenna into a dipole antenna whose frequency range exceeds UWB requirements. The proposed design has compact, planar, and simple shape arranged in self-complementary manner connected to the (SMA) connector via rectangular microstrip line. The self-complementary structure offers better reduction of the imaginary part of antenna impedance, which allows matching on a wider band of frequencies. The proposed antenna showed −10 dB return loss bandwidth extending from 1.86 GHz up to 17.7 GHz. Moreover, this antenna has a simple shape as compared with complicated and irregular shapes with curves, slots or parasitic elements. The proposed design is validated by experimental measurements. The phase of the return loss is investigated for more insight into antenna matching.

Quasi-self-complementary ultra-wideband antenna with band rejection characteristics

“…The input impedance of such type of antenna is generally characterized by its constant input impedance of 188.5 V. In spite of all the impressive aforementioned prospects, an additional impedance matching circuit is required to transform input impedance from 188.5 to 50 V in order to make it integrated with the RF front end [4][5][6][7]. In previous literatures, several types of self-complementary or quasi-self-complementary configuration have been explained for UWB application, such as half circular disk types [8], stepped triangular type [9], rectangular type [10], fractal BOW-TIE type [11], circular disk type [12], crossbar fractal type [13], horn-shaped self-complementary structure [14]. In this article, a novel design of microstrip line-fed quasi-selfcomplementary semi-octagonal band-notched UWB antenna is explained.…”

“…The proposed design methodology is new in comparison to the previously reported work and our design is aimed to overcome the above drawbacks. Basic idea of semioctagonal self-complementary structure has been chosen as initial configuration due to its fairly compact size (26 × 36.6 mm) and simple shape compared with irregular and complicated shape (as discussed in previous literatures [2][3][4][5][6][7][8][9][10][11][12][13][14]). This kind of structure is able to reduce the influence of the discontinuity present in the antenna feeding point, which gradually changes the distribution of the current flowing from the feeding line to the radiant patch.…”

Scaling the Effectiveness of Existing Techniques towards Enhancing Performance of UWB Antenna

“…Some of the notable studies found are that of [28][29] [30]. The authors in [31] have introduced triangular monopole, while authors in [32] and [33] have considered circular and elliptical monopoles Although the study have considered various technique to accomplish better bandwidth, but various extrinsic features like channel model, channel state, interference, and design principle of antenna was the major research challenge, which was not found much to be addressed. Certain studies [42] that have adopted planer monopole antenna are found to be frequently adopted by other studies too [43], [44].…”

An Ultra-Wideband Balanced Bandpass Filter Based on Defected Ground Structures

“…Ultra-wideband (UWB) technique has drawn much attention for various applications [6][7][8][9]. A two-stage differential-mode BPF is designed using symmetrical bisections of branch-line topology [10].…”