The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2014
Filed:
Nov. 05, 2009
Anders Lundström, Karlstad, SE;
Henrik Asplund, Stockholm, SE;
Mikael Kvist, Solna, SE;
Emil Mellfeldt, Järlfälla, SE;
Anders Lundström, Karlstad, SE;
Henrik Asplund, Stockholm, SE;
Mikael Kvist, Solna, SE;
Emil Mellfeldt, Järlfälla, SE;
Unwired Planet, LLC, Reno, NV (US);
Abstract
The present invention relates to a device and method for simulating a radio channel with a defined characteristic between at least one antenna port () of a first device (), and a second device () in a test environment. The device comprises a first antenna () adapted to transmit signals, and arranged to provide a first radio channel () between the first antenna () and the second device () and, a second antenna () adapted to transmit signals, and arranged to provide a second radio channel () between the second antenna () and the second device (). A characteristic of the second radio channel () is dissimilar to a characteristic of the first radio channel (). The device further comprises a multiport circuit () arranged to connect the at least one antenna port () of the first device () with the first and second antennas (), and adapted to split a signal received from the at least one antenna port () into at least two split signals, and to forward the at least two split signals to the first and second antennarespectively. The device also comprises a modifying circuit () adapted to modify an amplitude relation between the at least two split signals, thereby simulating a radio channel between the at least one antenna port () and the second device () with a characteristic which is a combination of the characteristic of the second radio channel () and the characteristic of the first radio channel () in a relation corresponding to the modified amplitude relation.