Monolithic double balanced mixer with high third order intercept point employing an active distributed balun

Patent 5060298 Issued on October 22, 1991. Estimated Expiration Date:

December 9, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Tuning systems on dielectric substrates
Patent #: 4619001
Issued on: 10/21/1986
Inventor: Kane

Doubly balanced diode mixer comprising a ring modulator each leg of which comprises a high speed conventional diode in series with at least one diode of the "varactor" kind
Patent #: 4637069
Issued on: 01/13/1987
Inventor: Charbonnier

Power divider/combiner circuit
Patent #: 4668920
Issued on: 05/26/1987
Inventor: Jones

Monolithic microwave integrated circuit broadband mixer
Patent #: 4675911
Issued on: 06/23/1987
Inventor: Sokolov , et al.

Active balum star mixer
Patent #: 4712024
Issued on: 12/08/1987
Inventor: McGuire , et al.

Monolithic FET bridge attenuator Patent #: 4737739
Issued on: 04/12/1988
Inventor: Rosier , et al.

Inventors

Assignee

Siemens Aktiengesellschaft

Application

No. 282542 filed on 12/09/1988

US Classes:

455/326, With balanced mixer330/54, Distributed amplifier330/277, Including field effect transistor455/333Transistor or integrated circuit

Examiners

Primary: Eisenzopf, Reinhard J.
Assistant: Charouel, Lisa

International Class

H04B 001/26

Abstract

A monolithic double balanced mixer with a high third order intercept point employs a local oscillator signal which is applied to the input port of a first active distributed element balun. The balun has two outputs which are applied via amplifiers to respective inputs of a double balanced resistive FET quad mixer. The double balanced resistive FET quad mixer employs four MESFETs arranged in a ring configuration. Two additional inputs to the quad mixer are obtained from a second balun which is also of an active distributed element configuration and receives at the input the RF signal. The quad mixer operates to produce mixing of the LO and RF signals at the outputs thereof. The outputs of the quad mixer are applied to a combiner which operates to combine the outputs of the quad mixer to produce at the combiner output an IF signal. The combiner can be a common gate combiner configuration with active loads or a distributed configuration employing FET devices in a distributed transmission line type of circuit.

Other References

Siliconix Application Note, No. AN85-2, Oct. 1986, by Oxner, "A Commutation Double Balanced MOSFET Mixer of High Dynamic Range"
"A Monolithic Single-Chip X-Band Four-Bit Phase Shifter", by Ayasly et al., IEEE Trans. on Microwave Theory and Techniques, vol. MTT-30, No. 12, Dec. 1982, pp. 2201-2206
"Monolithic Dual-Gate GaAs FET Digital Phase Shifter", by Vorhaus et al., IEEE Trans. on Microwave Theory and Techniques, vol. MTT-30, No. 7, Jul. 1982, pp. 982-992
"Microwave Semiconductor Circuit Design, Chapter 13-Circuits Using PIN Diodes", by W. Allen Davis, Van Nostrand Reinhold Company, Inc. (1984), pp. 264-293
"2 to 8 GHz Double Balanced MESFET Mixer with + DBM Input 3rd Order Intercept", by S. Weiner et al., 1988 IEEE MTT-S Digest, pp. 1097-1100
IEEE Trans. on Micro. Theory & Tech., vol. MTT-35, No. 4, Apr. '87, by Crete et al., pp. 435-440
Microwave Jour., May 1988, by Bierig et al., pp. 251-270
Microwave Jour., May 1988, by D. Fisher, pp. 275-292
1988 IEEE MTT-S Digest, by Weiner et al., pp. 1097-1099
1988 IEEE MTT-S Digest, by S. A. Maas, pp. 895-89