DESIGN METHOD OF DUAL-FREQUENCY MICROWAVE PHASE SHIFTERS WITH DISTINCT PHASE SHIFTS IN FREQUENCY BANDS
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2016, Vol 849, Issue 2016
Abstract
This paper is devoted to design method of dual-band phase shifters, which can execute the assigned to them functions in operating bands for example of two different telecommunication standards. In the circuit of phase shifter, where the differential phase shift is provided by the switching of channels of passing the signal the parameters of switching elements do not determine this shift unlike the other well-known circuits. However in case of bad matching and isolation of switches the frequency bands are narrowed, the losses and imbalance of amplitudes in two states are grown. The dual-frequency matching and isolation are reached in the SPMT switch by means of impedance transformers which can be located on the input of switch before branching, or in channels after the switching elements before outputs. The methods of calculation of such dual-frequency transformers based on the asymmetrical one-stub circuit and the symmetrical two-stub circuit, and also the methods of calculation of circuits which are needed for realization of reactance with the appropriate values at two operating frequencies is offered. The calculation and simulation of the SPDT switch for use as a part of the phase shifter with operating frequencies of 2,4/5,2 GHz was executed by these methods. For obtaining of arbitrary difference phase shift at two frequencies the replacement of line segments in channels of phase shifter by the dual-frequency equivalent circuits is carried out. The method of calculation of such P-type circuit for replacement of a segment with different values of characteristic impedance and electrical length at operating136 frequencies is offered. The offered approach was investigated on examples of calculation and simulation of the dual-frequency phase shifters with identical 450/450 and distinct 450/900 differential phase shifts at operating frequencies 2,4/5,2 GHz and with shifts 450/–450 at frequencies 0,95/2,15 GHz.
Authors and Affiliations
Ivan Prudyus, Valeriy Oborzhytskyy, Volodymyr Storozh
Keywords
Related Articles
- EP ID EP457187
- DOI -
- Views 130
- Downloads 0
MICROSTRIP FILTER WITH SLOT RESONATORS IN GROUND PLANE
The development of contemporary SHF systems calls for a broad nomenclature of frequencyselective devices, band-pass filters in particular. One of the possible directions of filter design is the usage of electromagnetic-b...
ESTIMATING THE ADEQUACY OF SOFTWARE ROUTER PERFORMANCE UNDER MULTIMEDIA TRAFFIC PROCESSING
In this paper we perform a study of probabilistic and statistical properties of experimental traffic of multiservice telecommunication network to confirm the adequacy of the developed software router model and simulated...
SOLVING OF RADIOELECTRONIC SYSTEMS COMBINATORIAL OPTIMIZATION PROBLEMS WITH MS EXCEL SOLVER
Possibilities of modelling optimization design problems as the extreme combinatorial graph problems and solving them in MS Excel Solver are studied. Drawbacks of existing models from considering their realization in MS E...
THE PROCEDURE OF OPTIMIZATION OF LINEAR PERIODICALLY TIME-VARIABLE CIRCUITS IN AN ENVIRONMENT UDF MAOPCs
The paper presents the procedure of optimization of linear periodically time-variable circuits based on the calculation of circuit parametric transfer functions by the frequency symbolic method. The parametric transfer f...
SUBPIXEL IMAGE PROCESSING IN MONITORING SYSTEMS OF VISIBLE WAVELENGTHS
This paper is devoted to considering of ways to improve the resolution, principles and methods of subpixel imaging technology, assessment of the development status and the latest research developments. Modern approaches...