Patch antenna-based wideband antenna system

Patent metadata

Field	Value
Publication number	US-9716320-B2
Application number	US-201414512139-A
Country	US
Kind code	B2
Filing date	Oct 10, 2014
Priority date	Oct 10, 2014
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

Devices describe herein are configured to radiate radio frequency (RF) energy corresponding to RF signals from a first range of frequencies. The device comprises a patch antenna assembly comprising a microstrip disposed on a printed circuit board and a patch antenna. The device also includes a transmitter configured to generate RF signals from the first range of frequencies at an output of the transmitter and a center feed assembly comprising a waveguide, a lens and the patch antenna assembly disposed in the waveguide. The center feed assembly is configured to radiate from the lens radio frequency (RF) energy corresponding to RF signals from first range of frequencies at a power level greater than the first power level.

First claim

We claim:

1. An antenna system comprising:
a center feed assembly having a waveguide and a lens;
a patch antenna arranged to transmit radio frequency (RF) signals from a first range of frequencies at a first gain and to transmit RF signals from a second range of frequencies at a second gain, wherein the second gain is less than the first gain and wherein the patch antenna is arranged to transmit the RF signals into the center feed assembly;
the center feed assembly being configured to cause the RF signals from the second range of frequencies to be transmitted with a gain greater than the second gain via the lens; and
a primary dish and a secondary reflector, wherein the center feed assembly is configured to guide the transmitted signals towards a face of the secondary reflector and wherein the secondary reflector has an inverse tapered face plate;
wherein the patch antenna is configured to radiate the RF signals into a cavity of the center feed assembly, the center feed assembly being disposed within the primary dish, and wherein the center feed assembly is configured to guide radiated energy onto the inverse tapered face plate of the secondary reflector; and
wherein the secondary reflector comprises a plurality of legs, wherein a first end of one of the plurality of legs is attached with an edge of the inverse tapered face plate and a second end of the one of the plurality of legs is attached to a base ring wherein a circumference of the base ring is similar to a circumference of the primary dish.

2. The antenna system of claim 1 wherein the base ring of the secondary reflector is attached to the circumference of the primary dish by a plurality of retainer clips and retainer clip covers.

3. The antenna system of claim 2 wherein each retainer clip comprises two curved members spaced apart from each other to accommodate the one of the plurality of legs and wherein each of the two curved members are adapted to contact a surface of the base ring.

4. The antenna system of claim 3 wherein each retainer clip further comprises two legs spaced apart from each other and wherein each of the legs is provided with a tab.

5. The antenna system of claim 4 wherein each retainer clip cover is provided with two cavities wherein each of the cavities is adapted to receive the respective leg and tab of the retainer clip.

Assignees

• Cambium Networks Ltd

Inventors

• Ley John Francis
• Gruettner Carsten Claus

Classifications

• H01Q5/35

  using two or more simultaneously fed points · CPC title

• H01Q19/19

  comprising one main concave reflecting surface associated with an auxiliary reflecting surface · CPC title

• H01Q19/191 Primary

  wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds · CPC title

• H01Q1/1207 Primary

  for fastening a rigid aerial element · CPC title

• H01Q19/062

  for focusing · CPC title