scholarly journals K/Ka-band dual-polarized SIW-fed lens antennas for Rx/Tx integration

2018 ◽  
Vol 10 (5-6) ◽  
pp. 627-634 ◽  
Author(s):  
Thomas Jaschke ◽  
Hans K. Mitto ◽  
Arne F. Jacob
Keyword(s):  
Satellite Communication ◽  
Printed Circuit Board ◽  
Design Procedure ◽  
Circuit Board ◽  
Dual Band ◽  
Ka Band ◽  
Printed Circuit ◽  
Lens Antennas ◽  
Radiation Properties ◽  
Dielectric Lens

AbstractThis contribution deals with array elements for K/Ka-band satellite communication terminals. It proposes an end-fire design realized in substrate integrated waveguide technology and featuring dual-band functionality, and dual circular polarization. The latter is achieved by means of a dual-band orthomode transducer. An extended hemispherical dielectric lens ensures good matching and radiation properties. The feed structure is composed of a multilayer printed circuit board and tapered superstrates. The design procedure of the components is explained in detail and three different variants of the antenna are compared. The measured scattering and far-field parameters validate the concept.

scholarly journals A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

2021 ◽  
pp. 1-7
Author(s):  
Anton Sieganschin ◽  
Thomas Jaschke ◽  
Arne F. Jacob
Keyword(s):  
Insertion Loss ◽  
Printed Circuit Board ◽  
Noise Figure ◽  
Low Noise ◽  
Single Band ◽  
Circuit Board ◽  
Dual Band ◽  
Ka Band ◽  
Compression Properties ◽  
The Individual

Abstract This contribution deals with a frontend for interleaved receive (Rx)-/transmit (Tx)-integrated phased arrays at K-/Ka-band. The circuit is realized in printed circuit board technology and feeds dual-band Rx/Tx- and single-band Tx-antenna elements. The dual-band element feed is composed of a substrate-integrated waveguide (SIW) diplexer with low insertion loss, a low-noise amplifier (LNA), a bandpass filter, and several passive transitions. The compression properties of the LNA are identified through two-tone measurements. The results dictate the maximum allowable output power of the power amplifier. The single band feed consists of a SIW with several transitions. Simulation and measurement results of the individual components are presented. The frontend is assembled and measured. It exhibits an Rx noise figure of 2 dB, a Tx insertion loss of ~ 2.9 dB, and an Rx/Tx-isolation of 70 dB. The setup represents the unit cell of a full array and thus complies with the required half-wave spacing at both Rx and Tx.

Ka-band antenna arrays with dual-frequency and dual-polarized patch elements

2016 ◽  
Vol 8 (6) ◽  
pp. 963-972 ◽  
Author(s):  
Benjamin Rohrdantz ◽  
Thomas Jaschke ◽  
Frauke K. H. Gellersen ◽  
Anton Sieganschin ◽  
Arne F. Jacob
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Communication Systems ◽  
Satellite Communication ◽  
Circuit Board ◽  
Dual Band ◽  
Antenna Element ◽  
Dual Frequency ◽  
Ka Band ◽  
Dual Polarized

In this contribution a dual-band, dual-polarized microstrip antenna element for array applications is presented. The patch antenna is designed to operate simultaneously at around 30 and 20 GHz, the up- and downlink frequencies of modern Ka-band satellite communication systems. The antenna is smaller than half the freespace wavelength at 30 GHz to enable its utilization as array element of dual-band ground terminals. Integrating transmitter and receiver circuits allows, in turn, for a very compact active terminal solution. To minimize production cost, the design is carried out in standard multilayer printed circuit board technology. The antenna features two distinct polarization ports suitable for either dual linear or dual circular polarization if both ports are excited in quadrature. The single antenna design process is described in detail and simulation and measurement results are presented. Finally, different arrays based on this patch antenna are evaluated by simulation and measurements.

scholarly journals A Double Inverted F-Shape Patch Antenna for Dual-Band Operation

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
M. M. Islam ◽  
M. R. I. Faruque ◽  
W. Hueyshin ◽  
J. S. Mandeep ◽  
T. Islam
Keyword(s):  
Finite Element Method ◽  
Patch Antenna ◽  
High Frequency ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Dual Band ◽  
The Finite Element Method ◽  
Microstrip Transmission Line ◽  
Printed Circuit ◽  
Measured Impedance

A double inverted F-shape patch antenna is presented for dual-band operation. The proposed antenna is comprised of circular and rectangular slots on a printed circuit board of 40 mm × 40 mm × 1.6 mm with a 50 Ω microstrip transmission line. Commercially available high frequency structural simulator (HFSS) based on the finite element method (FEM) has been adopted in this investigation. It has a measured impedance bandwidths (2 : 1 VSWR) of 18.53% on the lower band and 7.8% on the upper band, respectively. It has achieved stable radiation efficiencies of 79.76% and 80.36% with average gains of 7.82 dBi and 5.66 dBi in the operating frequency bands. Moreover, numerical simulations have been indicated as an important uniformity with measured results.

scholarly journals A Low-Cost and Efficient Microstrip-Fed Air-Substrate-Integrated Waveguide Slot Array

Electronics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 338
Author(s):  
Linfeng Li ◽  
Jie-Bang Yan
Keyword(s):  
Printed Circuit Board ◽  
High Efficiency ◽  
Low Cost ◽  
Design Procedure ◽  
Substrate Material ◽  
Circuit Board ◽  
Substrate Integrated Waveguide ◽  
Printed Circuit ◽  
Waveguide Transition ◽  
Pcb Manufacturing

A microstrip-fed air-substrate-integrated waveguide (ASIW) slot array with high efficiency and low cost is presented. The design cuts out the substrate material within SIW, replaces the vias with metallic sidewalls, and uses a simple microstrip line-waveguide transition to feed the slot array. Radiating slots are cut on a 5-mil brass-plate, which covers the top of the substrate cutout to resemble a hollow waveguide structure. This implementation provides a simple and efficient antenna array solution for millimeter-wave (mm-wave) applications. Meanwhile, the fabrication is compatible with the standard printed circuit board (PCB) manufacturing process. To demonstrate the concept, a 4-element ASIW slot array working at the n257 band for 5G communications was designed using low-cost Rogers 4350B and FR4 substrate materials. Our simulation result shows 18% more efficiency than a conventional SIW slot array using the same substrate. The fabricated prototype shows |S11| < −15 dB over 27–29 GHz and a peak realized gain of 10.1 dBi at 28.6 GHz. The design procedure, prototyping process, and design analysis are discussed in the paper.

scholarly journals Analysis of a Compact Wideband Slotted Antenna for Ku Band Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
M. R. Ahsan ◽  
M. Habib Ullah ◽  
F. Mansor ◽  
N. Misran ◽  
T. Islam
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Printed Circuit Board ◽  
Design Procedure ◽  
Circuit Board ◽  
Successful Completion ◽  
Printed Circuit ◽  
Slotted Antenna ◽  
Stable Variation ◽  
Ku Band

The design procedure and physical module of a compact wideband patch antenna for Ku band application are presented in this paper. Finite element method based on 3D electromagnetic field solver has been utilized for the designing and analyzing process of proposed microstrip line fed modifiedE-Hshaped electrically small patch antenna. After successful completion of the design process through various simulations, the proposed antenna has been fabricated on printed circuit board (PCB) and its characteristics have been studied. The parameters of the proposed antenna prototype have been measured in standard far-field rectangular shape anechoic measurement compartment. It is apparent from the measured antenna parameters that the proposed antenna achieved almost stable variation of radiation pattern over the entire operational band with 1380 MHz of-10 dB return loss bandwidth. The maximum gain of 7.8 dBi and 89.97% average efficiency within the operating band from 17.15 GHz to 18.53 GHz ensure the suitability of the proposed antenna for Ku band applications.

scholarly journals Harmonic Dual-Band Diode Mixer for the X- and K-Bands

2021 ◽  
Vol 21 (1) ◽  
pp. 64-70
Author(s):  
Jeong Hun Park ◽  
Moon-Que Lee
Keyword(s):  
Integrated Circuit ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Dual Band ◽  
Printed Circuit ◽  
Rf Components ◽  
Reconfigurable Devices ◽  
X Band ◽  
Measurement Results ◽  
K Band

This paper presents a new dual-band diode mixer for the X- and K-bands. The proposed mixer consists of a pair of series-connected diodes and a frequency-dependent delay line that operates at 180° and 360° at the X-band of 10.525 GHz and at the K-band of 24.15 GHz, respectively. Without reconfigurable devices such as switches, the proposed mixer operates as a single-balanced diode mixer at the X-band and a subharmonically pumped antiparallel diode mixer at the K-band simultaneously. The designed circuit was implemented in a hybrid microwave integrated circuit using discretely packaged RF components on a microwave printed circuit board. The measurement results showed conversion losses of 6.5 dB and 16.6 dB at the X- and K-bands, respectively.

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