US 9,812,751 B2
Plurality of resonator cavities coupled by inductive apertures which are adjusted by capacitive parts
Jukka Puoskari, Tupos (FI); and Petri Päri, Kempele (FI)
Assigned to Intel Corporation, Santa Clara, CA (US)
Appl. No. 14/778,760
Filed by Intel Corporation, Santa Clara, CA (US)
PCT Filed Jun. 25, 2014, PCT No. PCT/IB2014/001987
§ 371(c)(1), (2) Date Sep. 21, 2015,
PCT Pub. No. WO2015/008150, PCT Pub. Date Jan. 22, 2015.
Claims priority of provisional application 61/839,093, filed on Jun. 25, 2013.
Prior Publication US 2016/0049716 A1, Feb. 18, 2016
Int. Cl. H01P 1/205 (2006.01); H01P 7/04 (2006.01); H01P 1/20 (2006.01); H01P 7/06 (2006.01)
CPC H01P 1/2053 (2013.01) [H01P 1/20 (2013.01); H01P 7/04 (2013.01); H01P 7/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An adjustable cavity resonator having a bottom, walls and a lid forming a transmission path inner conductor casing, the casing being divided into a plurality of adjustable resonator cavities, a pair of successive adjustable resonator cavities of the plurality of adjustable resonator cavities being separated by an intermediate conductive wall, the pair of successive adjustable resonator cavities including respective inner conductors, which are in electrical connection with the inner conductor casing and having a coupling aperture in the conductive intermediate wall which separates the pair of adjustable resonator cavities, the coupling aperture providing a coarse coupling between the pair of successive adjustable resonator cavities, the coupling aperture being arranged to inductively couple the pair of successive adjustable resonator cavities, characterized in that the coarse coupling has at least one capacitive part, arranged to form a capacitive coupling between the pair of successive adjustable resonator cavities, wherein the capacitive part has a first end extending into a first one of the pair of successive adjustable resonator cavities and a second end extending into a second one of the pair of successive adjustable resonator cavities, wherein the first and second ends of the capacitive part are formed of a conductive material and are galvanically isolated from the intermediate conductive wall, wherein the capacitive part is dimensioned such that as the successive pair of adjustable resonator cavities are tuned, changes in coupling band width caused by the capacitive part tend to cancel changes in the coupling band width caused by the coupling aperture.