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  • Doherty Power Amplifier Network
    Publication number: 20130093534
    Abstract: The present invention is directed to a network that includes an output matching network coupled to an amplifier. The output matching network is configured to transform the at least one amplifier transistor output impedance to an output matching network impedance. A combiner network is coupled to the output matching network. The combiner network includes a first quarter wavelength transmission line coupled between the in-phase signal path and a combiner node. The combiner network further includes a bandwidth enhancement element coupled to the quadrature signal path at the combiner node and an impedance transformation element coupled between the combiner node and a load. The impedance transformation element is configured to substantially transform a combined output matching network impedance at the combiner node to the load impedance.
    Type: Application
    Filed: October 15, 2012
    Publication date: April 18, 2013
    Applicant: Anaren, Inc.
    Inventor: Anaren, Inc.
  • RF Resistor with Lossy Traces
    Publication number: 20140077924
    Abstract: An RF power resistor includes: a lossy layer; and a dielectric layer. The lossy layer is shaped and/or sized as a transmission line. The lossy layer is made of a lossy material. The dielectric layer is made of a dielectric material. The lossy layer and the dielectric material are located to be adjacent to each other and in contact with each other.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 20, 2014
    Applicant: Anaren, Inc.
    Inventor: Michael J. Len
  • Auxiliary amplifier network
    Patent number: 7061315
    Abstract: A high frequency amplifier network is provided in which an auxiliary amplifier is available to replace one of a plurality of primary amplifiers. Alternately, the auxiliary amplifier may operate in parallel with one of a plurality of primary amplifiers.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: June 13, 2006
    Assignee: Anaren, Inc.
    Inventor: Jeffrey C. Merrill
  • TUNABLE SURFACE MOUNT CERAMIC COUPLER
    Publication number: 20070120620
    Abstract: A coupler is provided that includes a floating, exposed ground plane that can be partially removed to alter the coupling coefficient of the coupler's transmission lines. According to one embodiment, the coupler is formed using low temperature co-fired ceramic techniques to provide a small, stable and durable device suitable for installations in which miniaturization is required.
    Type: Application
    Filed: May 16, 2006
    Publication date: May 31, 2007
    Applicant: ANAREN, INC.
    Inventors: Simon Gay, Thomas Dowling
  • RF resistor with lossy traces
    Patent number: 9064622
    Abstract: An RF power resistor includes: a lossy layer; and a dielectric layer. The lossy layer is shaped and/or sized as a transmission line. The lossy layer is made of a lossy material. The dielectric layer is made of a dielectric material. The lossy layer and the dielectric material are located to be adjacent to each other and in contact with each other.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: June 23, 2015
    Assignee: Anaren, Inc.
    Inventor: Michael J. Len
  • Magnetic Instrument Pickup
    Publication number: 20120103169
    Abstract: An instrument pickup including a stack of thin laminated printed circuit boards. Each layer includes an etched coil conductor structure with narrow lines and spaces defining the coil structure. The layers are connected via through holes. The etched lines are smaller than the insulated copper wire (also sometimes called magnetic wire) of a conventional instrument pickup, which means that the size, volume and/or height of the pickup may be reduced relative to a conventional wire wound instrument pickup.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Applicant: ANAREN, INC.
    Inventor: Thomas Lingel
  • SYMMETRICAL HYBRID COUPLER
    Publication number: 20140085019
    Abstract: The present invention is directed to a hybrid coupler device that includes a first transmission line structure and a second transmission line structure. The first transmission line structure is interdigitally coupled with the second transmission line structure such that each transmission line in the second transmission line structure is disposed adjacent to a transmission line in the first transmission line structure. The coupling or the mutual capacitance Cd between the transmission lines of the present invention need not be equal; in fact, they all can be different.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 27, 2014
    Applicant: Anaren, Inc.
    Inventors: Chong Mei, Halid Mustacoglu
  • Non-switching adaptable 4-way power splitter/combiner
    Patent number: 7005942
    Abstract: A 4-way power splitter/combiner circuit providing a plurality of transmission lines of selected impedance and phase shift to define four amplifier ports into which one to four amplifiers may be populated without reconfiguration of the circuit. The circuit provides acceptable VSWR and return loss under each operating condition.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: February 28, 2006
    Assignee: Anaren, Inc.
    Inventors: Brian E. Culliton, Chong Mei
  • Impedance Transforming Coupler
    Publication number: 20120229230
    Abstract: A coupler circuit that includes two parallel coupled transmission lines (first transmission line and second transmission line) and a third transmission line, one end of the third transmission line connects to the end of first transmission line at one side, the other end of the third transmission line connects to the end of the second transmission line at the other side. Various coupling value and impedance transforming ratio can be achieved by select corresponding even and odd mode impedance of the coupled transmission lines and characteristic impedance of the crossing transmission line.
    Type: Application
    Filed: September 9, 2011
    Publication date: September 13, 2012
    Applicant: ANAREN, INC.
    Inventors: Chong Mei, Hans P. Ostergaard
  • Inverted Style Balun with DC Isolated Differential Ports
    Publication number: 20070176707
    Abstract: The present invention is directed to a balun that includes a first coupler structure having a first port of a balanced port pair and an unbalanced port. A second coupler structure includes a second port of the balanced port pair. The second coupler port structure being connected to the first coupler structure such that the second port of the balanced port pair is DC isolated from the first port of the balanced port pair without decoupling components.
    Type: Application
    Filed: January 30, 2007
    Publication date: August 2, 2007
    Applicant: ANAREN, INC.
    Inventor: Niels H. Kirkeby
  • Compact Broadband Impedance Transformer
    Publication number: 20140118071
    Abstract: The present invention is directed to an impedance transformation device for use in a system having a characteristic system impedance, the device being characterized by a predetermined bandwidth having a center frequency. The device housing size is one-eighth wavelength of the center frequency. A first coupler is characterized by an even mode impedance and an odd mode impedance. The bandwidth is a function of the even mode impedance and the odd mode impedance substantially corresponds to the component port impedance. At least one second coupler is disposed in parallel with the first coupler and is characterized by the even mode impedance and the odd mode impedance.
    Type: Application
    Filed: March 1, 2013
    Publication date: May 1, 2014
    Applicant: ANAREN, INC.
    Inventors: Chong Mei, Ying Huang
  • Magnetic instrument pickup
    Patent number: 8519251
    Abstract: An instrument pickup including a stack of thin laminated printed circuit boards. Each layer includes an etched coil conductor structure with narrow lines and spaces defining the coil structure. The layers are connected via through holes. The etched lines are smaller than the insulated copper wire (also sometimes called magnetic wire) of a conventional instrument pickup, which means that the size, volume and/or height of the pickup may be reduced relative to a conventional wire wound instrument pickup.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Anaren, Inc.
    Inventor: Thomas Lingel
  • Wideband balun using re-entrant coupled lines and ferrite material
    Patent number: 8638181
    Abstract: A Guanella type balun with a conductive enclosure (for example, a re-entrant box) between its coupled lines and the magnetic material enclosing its coupled lines. Some embodiments use coupled strip lines. Some embodiments have dielectric material, such as printed circuit board material inside the re-entrant box along with the coupled strip lines. Preferably, the magnetic material is ferrimagnetic. Some preferred magnetic materials are non-conductive.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: January 28, 2014
    Assignee: Anaren, Inc.
    Inventors: Carl Gerst, Jeffrey C. Merrill
  • Inverted style balun with DC isolated differential ports
    Patent number: 7605672
    Abstract: The present invention is directed to a balun that includes a first coupler structure having a first port of a balanced port pair and an unbalanced port. A second coupler structure includes a second port of the balanced port pair. The second coupler port structure being connected to the first coupler structure such that the second port of the balanced port pair is DC isolated from the first port of the balanced port pair without decoupling components.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: October 20, 2009
    Assignee: Anaren, Inc.
    Inventor: Niels H. Kirkeby
  • Wideband Balun Using Re-Entrant Coupled Lines and Ferrite Material
    Publication number: 20120049971
    Abstract: A Guanella type balun with a conductive enclosure (for example, a re-entrant box) between its coupled lines and the magnetic material enclosing its coupled lines. Some embodiments use coupled strip lines. Some embodiments have dielectric material, such as printed circuit board material inside the re-entrant box along with the coupled strip lines. Preferably, the magnetic material is ferrimagnetic. Some preferred magnetic materials are non-conductive.
    Type: Application
    Filed: August 18, 2011
    Publication date: March 1, 2012
    Applicant: ANAREN, INC.
    Inventors: Carl Gerst, Jeffrey C. Merrill
  • Compact broadband impedance transformer
    Patent number: 9035715
    Abstract: The present invention is directed to an impedance transformation device for use in a system having a characteristic system impedance, the device being characterized by a predetermined bandwidth having a center frequency. The device housing size is one-eighth wavelength of the center frequency. A first coupler is characterized by an even mode impedance and an odd mode impedance. The bandwidth is a function of the even mode impedance and the odd mode impedance substantially corresponds to the component port impedance. At least one second coupler is disposed in parallel with the first coupler and is characterized by the even mode impedance and the odd mode impedance.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: May 19, 2015
    Assignee: Anaren, Inc.
    Inventors: Chong Mei, Ying Huang
  • Hybrid coupler device having plural transmission line structures with unwound-rewound geometry
    Patent number: 9214715
    Abstract: The present invention is directed to a hybrid coupler device that includes a first transmission line structure and a second transmission line structure. The first transmission line structure is interdigitally coupled with the second transmission line structure such that each transmission line in the second transmission line structure is disposed adjacent to a transmission line in the first transmission line structure. The coupling or the mutual capacitance Cd between the transmission lines of the present invention need not be equal; in fact, they all can be different.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 15, 2015
    Assignee: Anaren, Inc.
    Inventors: Chong Mei, Halid Mustacoglu
  • Circulator with modified bias to prevent higher order modes
    Patent number: 10403950
    Abstract: An approach to modifying bias in a circulator to prevent higher order modes that involves the use of features positioned near the ferrite material of the circulator. The ferrite bias in the perimeter of the ferrite material is modified by the adjacent features such that higher order modes cannot be sustained. The features may include scallops that create a non-uniform magnetic field towards the perimeter of the ferrite while leaving the field near-uniform in the center where the fundamental circulator mode primarily resides. Alternatively, slots may be placed in the magnetically conductive housing bottom in the region of the edge of the ferrite material to prevent higher order modes.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 3, 2019
    Assignee: ANAREN, INC.
    Inventor: Niels Kirkeby
  • RF attenuator device and system
    Patent number: 9634635
    Abstract: A device includes a thermally conductive and electrically insulative substrate having a first major surface and a second major surface. A coupling structure is configured to reduce the RF input signal by substantially a predetermined amount of attenuation power. A tuning circuit is characterized by a tuning reactance substantially matched to a predetermined system impedance. A resistor is disposed on a majority of the first major surface and is characterized by a parasitic capacitance that is substantially negated by the tuning reactance. The resistor includes a first resistive portion and a second resistive portion; each of the first resistive portion and the second resistive portion being configured to direct approximately one-half of the attenuation power to the ground portion.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: April 25, 2017
    Assignee: ANAREN, INC.
    Inventors: Chong Mei, Bo Jensen
  • CIRCULATOR WITH MODIFIED BIAS TO PREVENT HIGHER ORDER MODES
    Publication number: 20170214108
    Abstract: An approach to modifying bias in a circulator to prevent higher order modes that involves the use of features positioned near the ferrite material of the circulator. The ferrite bias in the perimeter of the ferrite material is modified by the adjacent features such that higher order modes cannot be sustained. The features may include scallops that create a non-uniform magnetic field towards the perimeter of the ferrite while leaving the field near-uniform in the center where the fundamental circulator mode primarily resides. Alternatively, slots may be placed in the magnetically conductive housing bottom in the region of the edge of the ferrite material to prevent higher order modes.
    Type: Application
    Filed: January 25, 2017
    Publication date: July 27, 2017
    Applicant: ANAREN, INC.
    Inventor: Niels Kirkeby
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