Satcom-on-the-move: Digital beam forming versus phased array

Baggen, L.; Holzwarth, S.

doi:10.1109/eucap.2014.6902356

Cited by 9 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this context, phased array antennas, also known as active electronically scanned arrays (AESAs), play an important role owing to their characteristics of low profile, size and weight, and high reliability because there are no moving parts to fail. AESAs can also steer beams in microseconds and support multiple, simultaneous, and independent beams [5,6].…”

Section: Introductionmentioning

confidence: 99%

Compact 2 × 2 Circularly Polarized Aperture-Coupled Antenna Array for Ka-Band Satcom-on-the-Move Applications

et al. 2021

View full text Add to dashboard Cite

This paper presents a novel design of a wideband circular polarization 2 × 2 microstrip antenna array working at Ka-band frequencies, from 27.5 to 31 GHz. This module is highly integrable with new silicon beamformer chips, creating a unit cell that can be part of a large electronically steerable antenna for compact, ultra-low-profile, Satcom-on-the-move (SOTM) platforms. A multi-layer structure fabricated in standard printed circuit board (PCB) technology with high-yield substrates has been used. The radiating elements consist of double-stacked circular patches housed in a cavity and fed by H-shaped aperture coupling. It achieves a bandwidth of 16.5 % with a wide beam-width of 95° in the desired band, which is necessary for wide scanning angles in a large phased array. In the 2 × 2 unit cell, the antenna elements are distributed by means of a sequential rotation technique where the separation between two of them is 5.3 mm in the XY-plane. Broadside beam-widths ranging from 53.4° at 27.5 GHz to 42.1° at 31 GHz are achieved, with boresight directivities from 10.7 to 12.9 dBi, respectively, in both the RHCP and LHCP polarization. Moreover, mutual coupling levels below −20 dB and an axial ratio less than 3 dB in the whole band guarantee a good circular polarization purity.

show abstract

Section: Introductionmentioning

confidence: 99%

Compact 2 × 2 Circularly Polarized Aperture-Coupled Antenna Array for Ka-Band Satcom-on-the-Move Applications

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Traditional monopulse systems with parabolic antennas, tracking targets by mechanically rotating the antenna aperture or the feeding port, are limited in the applications requesting fast scanning due to their slow response time and single target tracking. Phased array antennas or multi‐beam antennas [3, 4] can easily realise fast searching and multi‐target tracking by using electronic scanning techniques. Compared to mechanical scanning antennas with heavy and bulky waveguide structures and expensive phased antennas with complex T/R modules, the increasing need for high‐performance, low cost, low weight, fast scanning antennas for modern radar and telecommunication systems has boosted the development of planar electronic scanning antennas [5].…”

Section: Introductionmentioning

confidence: 99%

Multi‐beam monopulse substrate integrated waveguide slot array antenna

Liu

Yang

Zeng³

et al. 2018

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

A multi-beam slot array antenna is proposed in the 10-GHz band for a monopulse tracking system with resolution enhancement techniques. The antenna architecture combines a four-subarray substrate integrated waveguide (SIW) slot antenna, a multi-beam-forming network of microstrip Rotman lens array, and a SIW comparator of four-quadrant monopulse technique. A method to form difference patterns in both E-plane and H-plane for mutibeams is presented, and the method can improve the accuracy of angle detection for all beams. The key point of the method is to compensate the phase difference caused by the beam deflection between the two subarrays (quadrants) by constraining input delay lines of the Rotman lens array. To validate the proposed concepts, an antenna prototype is realized and measured. The experimental results demonstrate a scanning range of ±36° with −5 dB crossover level between two adjacent sum beams in the E-plane. The corresponding difference patterns are generated in both E-plane and H-plane via the monopulse comparator. The multi-beam monopulse system can achieve gains between 21.7 and 23.5 dBi for all sum beams at the center frequency of 10 GHz. This multi-beam monopulse slot antenna can be applied in radars and communication systems requiring beam-scanning capabilities and target tracking.

show abstract

“…The first type utilizes fully mechanical steering system like a traditional reflector array or a multibeam lens antenna [1,2]. The second type uses RF topologies like the classical phased array approach or Digital Beam Forming (DBF) which are completely electronically steerable [3]. The third type merges the technologies of mechanical steering and electronic steering together for planar antennas [4,5].…”

Section: Introductionmentioning

confidence: 99%

A Multibeam Dual-Band Orthogonal Linearly Polarized Antenna Array for Satellite Communication on the Move

Liu

Mao³

et al. 2015

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

The design and simulation of a 10 × 8 multibeam dual-band orthogonal linearly polarized antenna array operating at Ku-band are presented for transmit-receive applications. By using patches with different coupling methods as elements, both perpendicular polarization in 12.25–12.75 GHz band and horizontal polarization in 14.0–14.5 GHz band are realized in a shared antenna aperture. A microstrip Rotman lens is employed as the beamforming network with 7 input ports, which can generate a corresponding number of beams to cover −30°–30° with 5 dB beamwidth along one dimension. This type of multibeam orthogonal linearly polarized planar antenna is a good candidate for satellite communication (SatCom).

show abstract

Satcom-on-the-move: Digital beam forming versus phased array

Cited by 9 publications

References 2 publications

Compact 2 × 2 Circularly Polarized Aperture-Coupled Antenna Array for Ka-Band Satcom-on-the-Move Applications

Compact 2 × 2 Circularly Polarized Aperture-Coupled Antenna Array for Ka-Band Satcom-on-the-Move Applications

Multi‐beam monopulse substrate integrated waveguide slot array antenna

A Multibeam Dual-Band Orthogonal Linearly Polarized Antenna Array for Satellite Communication on the Move

Contact Info

Product

Resources

About