Abstract
This paper presents a new compact microstrip filtering antenna with modified shaped slots to improve the impedance bandwidth. The proposed microstrip filtering antenna consists of three parts: the monopole radiating patch antenna; the Stepped Impedance Resonator (SIR) filter; and the feeding microstrip line. The designed structure is achieved on one-sided glass epoxy FR-4 substrate with dielectric constant εr = 4.4 and thickness h = 1.6 mm. The design procedure of the proposed filtering antenna starts from the second-order Chebyshev low pass filter (LPF) prototype. The achieved results show an excellent performance of S11-parameter with broadside antenna gain on +z-direction. Having two transmission zeros at 5.4 GHz and 7.7 GHz, good skirt selectivity and a wide-band impedance bandwidth of about 1.66 GHz makes the designed filtering antenna suitable for high-speed data communications. Both the simulation results generated by using the Computer Simulation Technology (CST) software package and the measurement achieved by using a vector network analyzer (HP 8510C) and the anechoic chamber show good agreement.
Highlights
Increasing demand for compact transceiver applications continues to affect the field of microwave and radio frequency communications [1,2,3,4]
The microstrip filtering antenna consists of three parts: the monopole radiating patch antenna, the Stepped Impedance Resonator (SIR) filter and the feeding microstrip line
The peak gain of the achieved pattern is about 3 dB, which provides good skirt selectivity. Both the simulation results generated by using the Computer Simulation Technology (CST) software package and the measurement Both the simulation results generated by using the CST software package and the measurement achieved from the vector network analyzer (HP 8510C) and anechoic chamber show fairly good achieved from the vector network analyzer (HP 8510C) and anechoic chamber show fairly good agreement
Summary
Increasing demand for compact transceiver applications continues to affect the field of microwave and radio frequency communications [1,2,3,4]. Modern trends in electronic and communication systems proposed more compact and portable systems, the designers of data transfer requires high channel capacities and needs more complex and bulky systems. Filter with the monopole patch antenna the in one single module various [24].components This integration changes the structure of the circuit, improves the performance of the circuit and simplifies the connection various components. Unlike many microstrip filtering antenna proposed the literature [35,36,37,38,39,40,41,42,43,44], thebandwidth design proposed here is better than others with respect to the structure size, in design complexity, gain, and the here iscoefficient better thancharacteristics.
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