# IET Microwaves, Antennas & Propagation

## Filter Results

Displaying Results 1 - 10 of 10
• ### Design and study of enhanced wideband transition between coplanar waveguide and broadside coupled stripline

Publication Year: 2013, Page(s):715 - 721
Cited by:  Papers (1)
| | PDF (818 KB)

Enhanced wideband transition between coplanar waveguide (CPW) and broadside coupled stripline (BCS) with arbitrary characteristic impedance ratio is developed on a basis of an improved tightly coupling, via-hole-free structure. The E-field of CPW gradually changes to that of BCS within a wide bandwidth with ratio up to 10.4:1. Parametric studies of the transition are carried out and four di... View full abstract»

• ### Zigzag metallic conductors as frequency selective surfaces

Publication Year: 2013, Page(s):722 - 728
| | PDF (651 KB)

Reflection and transmission properties of a new type of frequency selective surface (FSS) made of zigzag metallic elements placed periodically on a dielectric substrate are investigated theoretically for arbitrary polarisation. The electric field integral equation technique with the subdomain overlapping piecewise sinusoidal basis functions are employed to compute the unknown current coefficients ... View full abstract»

• ### Dual-band filter using asymmetrical stub-loaded resonator with independently controllable frequencies and bandwidths

Publication Year: 2013, Page(s):729 - 734
Cited by:  Papers (6)
| | PDF (534 KB)

A new kind of asymmetrical stub-loaded resonator is proposed and applied to design a dual-band bandpass filter (BPF) with independently controllable frequencies and bandwidths. The asymmetrical stub-loaded resonator presented in this study has more superior performance than the conventional symmetrical stub-loaded resonator. By appropriately selecting the lengths of the loaded stubs of the resonat... View full abstract»

• ### Design of a dual-polarised wideband short backfire antenna with high gain

Publication Year: 2013, Page(s):735 - 740
Cited by:  Papers (1)
| | PDF (690 KB)

The short backfire antenna (SBA) has been widely used for mobile satellite communications, tracking, telemetry and wireless local-area network applications. A dual-polarised wideband SBA excited by a hybrid configuration of waveguide and ortho-mode transducer is described here. The bandwidth widening of the antenna is achieved by the appearance of the second resonance point, owing to the parasitic... View full abstract»

• ### Microwave phase perturbation and ionisation measurement in vegetation fire plasma

Publication Year: 2013, Page(s):741 - 745
Cited by:  Papers (1)
| | PDF (299 KB)

Interaction of low temperature high collisional combustion plasma with electromagnetic wave energy results in a phase lag of the incident wave. If normalised collision frequency {(φeff)/2πf0} is much greater than unity (1), the phase shift (Δφ) varies linearly with plasma frequency, and hence with ionisation in plasma. Ionisati... View full abstract»

• ### Direction-of-arrival estimation for uncorrelated and coherent signals in the presence of multipath propagation

Publication Year: 2013, Page(s):746 - 753
Cited by:  Papers (4)
| | PDF (392 KB)

The authors propose a novel direction-of-arrival (DOA) estimation method for signals that are uncorrelated, partially coherent or fully coherent in the presence of multipath propagation. First, uncorrelated and coherent signals are distinguished by the rotational invariance techniques as well as the property of the moduli of eigenvalues. The DOAs of the uncorrelated signals are then estimated base... View full abstract»

• ### Electromagnetic band-gap based corrugated structures for reducing mutual coupling of compact 60 GHz cavity-backed antenna arrays in low temperature co-fired ceramics

Publication Year: 2013, Page(s):754 - 759
Cited by:  Papers (4)
| | PDF (585 KB)

Reducing the mutual coupling of antenna elements in 60 GHz phased arrays is an important issue because it directly affects the input impedance matching and radiation performances. This study presents an electromagnetic band-gap (EBG) based design using corrugated structures to reduce the mutual coupling between two closely placed antenna elements. An isolation enhancement of 3.6 to 10.3 dB was ach... View full abstract»

• ### Inkjet printed dipole antennas on textiles for wearable communications

Publication Year: 2013, Page(s):760 - 767
Cited by:  Papers (14)
| | PDF (795 KB)

This study presents an inkjet printed textile antenna realised using a novel fabrication methodology. Conventionally, it is very difficult to inkjet print onto textiles because of surface roughness. This study demonstrates how this can be overcome by developing an interface coated layer which bonds to a standard polyester cotton fabric, creating a smooth surface. A planar dipole antenna has been f... View full abstract»

• ### Reduced and conventional size multi-band circular patch antennas loaded with metamaterials

Publication Year: 2013, Page(s):768 - 776
Cited by:  Papers (3)
| | PDF (783 KB)

In this study, a novel technique to achieve multi-band performance for both reduced and conventional size circular microstrip patch antennas loaded with metamaterial has been proposed. Incorporation of symmetric slotting concept with the concept of additional mode modification for both MNG (μ negative) and ENG (ε negative) metamaterial loaded circular patch antennas have been shown. ... View full abstract»

• ### Dual-band coplanar waveguide-fed smiling monopole antenna for Wifi and 4G long-term evolution applications

Publication Year: 2013, Page(s):777 - 782
Cited by:  Papers (5)
| | PDF (617 KB)

A novel coplanar waveguide'-fed planar monopole antenna with dual-band operation for WiFi and long-term evolution 4G (LTE)' applications is presented. The simple antenna's geometry is composed of a circular radiating patch with a smiling slot, and it occupies a small size of 41.6(L) × 28.38(W) × 1.52(h) mm3. Two operating bands covering 2.3-3.0 and 4... View full abstract»

## Aims & Scope

IET Microwaves, Antennas & Propagation covers all aspects of microwave and antenna engineering and propagation.

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