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Small footprint coupled double loop (CDL) antennas are presented for dual band anti-jam GPS arrays. Miniaturization is achieved by employing a readily available εr=9.8 substrate and lumped coupling capacitors. A CDL GPS antenna prototype having 1"×1" (λ0/9.6×λ0/9.6 at L2 band) footprint over a 0.5" thick 1.6"×1.6" substrate is shown to operate with 3.8dB and 3.3dB measured...
A spatial-temporal Talbot phenomenon, based on metamaterial composite right/left-handed (CRLH) leaky-wave antennas (LWAs), is presented. The phenomenon is based on the combination of the regular spatial Talbot effect and the transient character of the pulse radiation phenomenon in the LWA structure, and it is localized both in space in time. The CRLH LWA scanning properties are used to obtain, for...
A new wideband small size Crescent Slot Ellipse Shape Antenna (CSESA) with crescent slot is presented. A lossless material honeycomb dielectric of dielectric constant 1.11 is sandwiched between radiating patch and ground. The proposed antenna is excited by coaxial probe excitation technique. The main motivation for this work is to enhance the bandwidth of the Impedance. The simulation results verify...
A new circular polarization (CP) design for single-feed microstrip patch antennas is presented and studied. The proposed design is much simpler in construction compared to the traditional wide-band patch antenna. For the desired results, two slots are inserted into the patch antenna. Bandwidths as high as 10% are achieved with stable pattern characteristics, such as gain and cross polarization, within...
A novel real-time spectrum analyzer (RTSA) is presented. This RTSA exploits the frequency-space mapping property of the composite right/left handed (CRLH) leaky-wave structure to generate spectrograms with unrestricted time-frequency resolution, not available in current competing systems. Moreover, it exhibits the advantages of low computational burden, frequency scalability and broadband (UWB) operation...
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