A Novel Design of Hybrid Monopole Rectangular Microstrip Antenna for WLAN and Wi-MAX Applications

This article describes a novel design and development of hybrid monopole rectangular microstrip antenna (HMRMSA) for WLAN and Wi-MAX applications. This antenna operates for the frequency range of2.07 to 6.72 GHz and showing a impedance bandwidth of 145%. The antenna structure consists of hybrid triangular shape model. At the bottom surface a partially ground plane is placed to achieve single wideband. The proposed antenna is fabricated using low cost FR4 substrate material. The antenna is excited through 50 ? microstrip line. The simulated and experimental results are demonstrates which are in good agreement with each other.The proposed antenna satisfies the -10dB impedance bandwidth requirements tocovering WLAN and Wi-MAX applications

Designing of Hybrid Semi-Circle Coupled Slot Loaded Rectangular Microstrip Antennas for Wireless Applications

ABSTRACT: In this paper a design of hybrid semi-circle coupled slot loaded rectangular microstrip antennas are presented for multiband operation. The proposed antennas are consisting a novel geometry of semi-circle radiating patch which is superimposed on conventional rectangular microstrip antenna (CRMSA) to form a hybrid model. The proposed antennas are excited through a simple 50-Ω microstripline feed using quarter wave impedance matching transformer. These antennas are operates between the frequencies from 1.87 to 6.50 GHz at different frequency bands and gives a highest virtual size reduction of 34.14% with broadside radiation characteristics. These antennas are useful for the applications such as WLAN, WiMax and Bluetooth. The important antenna parameters such as bandwidth, return loss, gain and radiation pattern are discussed and presented