Abstract
This paper is discusses a new configuration of integrated antenna for dual frequency operations and image frequency rejection. Microstrip patch antenna is design in such away to operate in dual frequencies band. The RF 90° hybrid, LNA's, mixers, LO and IF coupler are integrated to a dual frequency microstrip patch antenna to produce a single module of integrated antenna system that can perform for in dual-band frequencies. The design technique and simulation result for active integrated antenna (AIA) with image rejection is presented.
Highlights
Proposed DFIA image reject mixer (IRM) system: Nowadays, microwave antennas have been widely used especially in achieving the objective of maximal integration for personal communication system
The simulation result show that the square patch antenna designed can perform dual band frequencies
The patch antenna needs to be combined with radio frequency (RF) 90° hybrid to perform 90° phase difference between two RF signals that will be used in the proposed IRM system
Summary
Proposed DFIA image reject mixer (IRM) system: Nowadays, microwave antennas have been widely used especially in achieving the objective of maximal integration for personal communication system. These antennas can be mounted on the surface of high performance aircrafts, satellites, missiles, mobile phones and others. The main disadvantage of microstrip antenna is an intrinsic limitation in bandwidth, which is due to the resonant nature of the patch structure[2]. This problem gives a new motivation for research on solutions to overcome the bandwidth
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