An ultra wideband planar monopole antenna for spectrum sensing applications

Ultra-Wideband Planar Monopole Antenna with WiMAX and WLAN Band Rejection Characteristics

International Journal on Communications Antenna and Propagation (IRECAP) ◽

10.15866/irecap.v6i1.8295 ◽

2016 ◽

Vol 6 (1) ◽

pp. 44

Author(s):

Neelaveni Ammal Murugan ◽

Ramachandran Balasubramanian ◽

Hanumantha Rao Patnam

Keyword(s):

Monopole Antenna ◽

Ultra Wideband ◽

Planar Monopole Antenna

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Finite-ground-plane effects on the ultra-wideband planar monopole antenna

Microwave and Optical Technology Letters ◽

10.1002/mop.20526 ◽

2004 ◽

Vol 43 (6) ◽

pp. 535-537 ◽

Cited By ~ 25

Author(s):

Saou-Wen Su ◽

Kin-Lu Wong ◽

Yuan-Tung Cheng ◽

Wen-Shyang Chen

Keyword(s):

Ground Plane ◽

Monopole Antenna ◽

Ultra Wideband ◽

Planar Monopole Antenna

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Performance Evaluation of SDR Blade RF using Wide-band Monopole Antenna for Spectrum Sensing Applications

Applied Computational Electromagnetics Society ◽

10.47037/2020.aces.j.360407 ◽

2021 ◽

Vol 36 (4) ◽

pp. 419-424

Author(s):

Ahmed Ibrahim ◽

Wael Ali ◽

Hassan Aboushady

Keyword(s):

Performance Evaluation ◽

Cognitive Radio ◽

Spectrum Sensing ◽

Software Defined Radio ◽

Ground Plane ◽

Wide Band ◽

Monopole Antenna ◽

Antenna Design ◽

Wireless Technologies ◽

Sensing Applications

A spectrum-sensing algorithm is used to detect the available and the occupied frequency bands. The wideband antenna design approach is used for a microstrip fed monopole antenna that can be used for various wireless technologies such as GSM, UMTS, LTE, and WiFi operating at different frequencies from 1.25 to 3 GHz. The antenna is constructed from two copper layers of rectangular radiator and a partial ground plane. These layers are printed on an RO4003 substrate with dimensions 60 x 80 mm2. The antenna is experimentally fabricated to verify the simulation predictions and good matching between simulated and measured results is achieved. The wide-band antenna is tested by connecting it to the receiver of the Blade-RF Software Defined Radio (SDR) platform. A matlab script is then used to control the SDR board and to perform Spectrum Sensing for Cognitive Radio Applications.

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Ultra wideband matching network design for a V-shaped square planar monopole antenna

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078714001081 ◽

2014 ◽

Vol 6 (6) ◽

pp. 555-564 ◽

Cited By ~ 1

Author(s):

Ramazan Köprü ◽

Sedat Kilinç ◽

Çağatay Aydin ◽

Doğu Çağdaş Atilla ◽

Cahit Karakuş ◽

...

Keyword(s):

Network Design ◽

Monopole Antenna ◽

Ultra Wideband ◽

Network Analyzer ◽

Matching Network ◽

Coupling Element ◽

Antenna Structure ◽

Square Planar ◽

Planar Monopole Antenna ◽

Reflectance Measurements

In this paper, design, manufacture, and measurement of a wideband matching network for a broadband V-shaped square planar monopole antenna (V-SPMA) is presented. Matching network design is unavoidable in most cases even vital to facilitate a maximally flat power transfer gain for an antenna. In the work, a bandpass matching network (BPMN) design is done for a particular square monopole antenna with V-shaped coupling element that has essentially bandwidth increasing effect. Designed BPMN and the antenna forms a VSPMA–BPMN matched antenna structure. “real frequency technique” is employed in the BPMN design. BPMN prototype circuit has been constructed on an FR4 laminate with commercial microwave chip inductors and capacitors. Vector network analyzer gain and reflectance measurements of the matched antenna structure have shown highly compatible results to those of the theoretical design simulations along the passband (~0.8–4.7 GHz). Furthermore, newly proposed distributed capacitor–resistor lossy model for microstrip lines used in the BPMN circuit have exhibited that it can successfully mimic the measured gain and reflectance performance of the matched structure in passband and even in stopband upto 8 GHz. Designed structure can be utilized as a one single wideband broadcasting medium suitable for many communication standards such as GSM, 3G, and Wi-Fi.

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The Performance Comparison of a Dual-Ridge Horn Antenna and a Planar Monopole Antenna in the Microwave Breast Cancer Detection

Advanced Electromagnetics ◽

10.7716/aem.v9i2.1262 ◽

2020 ◽

Vol 9 (2) ◽

pp. 84-92

Author(s):

A. R. Celik ◽

M. B. Kurt

Keyword(s):

Breast Cancer ◽

Dielectric Constant ◽

Cancer Detection ◽

Breast Cancer Detection ◽

Monopole Antenna ◽

Ultra Wideband ◽

Microwave Measurement ◽

Significant Difference ◽

Planar Monopole Antenna ◽

Microwave Breast Cancer Detection

Detection of the breast cancer tumors at an early stage is very crucial to be successful in the treatment. Microwave measurement systems have gained much attention for this aim over last decades. The main principle of these systems is based on the significant difference in the dielectric properties of the malignant tumor and normal breast tissue in the microwave frequencies. In this paper, firstly several breast cancer detection techniques are mentioned. Then the advantages of the using microwaves in the detection systems are given. After that, some simulation and experimental studies of the radar-based ultra-wideband microwave measurement system are presented to detect tumor. The main purposes of these measurements are comparing the performance of a previously designed planar monopole antenna (PMA) with a dual-ridge horn (DRH) antenna and demonstrating a simple microwave breast cancer detection system. In the system, a planar breast phantom which is consisted of low dielectric constant material to represent the healthy tissue and high dielectric constant material to represent the tumor is used. Firstly, the measurements are made without tumor in the phantom. Then, the tumor-mimicking object is located to the phantom. In the measurements, both the PMA and DRH antennas are used respectively. These antennas are ultra-wideband and directional. They have narrow beamwidth and stable directional pattern at the interval of 3-10 GHz. According to the return loss results, the reflected energy increases when the antenna gets close to the tumor. Therefore, it can be said that the scattering parameters give important information about the tumor. According to the obtained results in this study, it can be said that the performance of the compact-sized PMA is better than the DRH antenna having larger size.

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